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Author SHA1 Message Date
Dan Gohman
3bf19e4c42 Remove lingering references to .llx and .tr in the tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51500 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-23 21:15:35 +00:00
Dan Gohman
0b924dcef8 Use PMULDQ for v2i64 multiplies when SSE4.1 is available. And add 
load-folding table entries for PMULDQ and PMULLD.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51489 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-23 17:49:40 +00:00
Matthijs Kooijman
5e179a23e3 Restucture a part of the SimplifyCFG pass and include a testcase. 
The SimplifyCFG pass looks at basic blocks that contain only phi nodes,
followed by an unconditional branch. In a lot of cases, such a block (BB) can
be merged into their successor (Succ).

This merging is performed by TryToSimplifyUncondBranchFromEmptyBlock. It does
this by taking all phi nodes in the succesor block Succ and expanding them to
include the predecessors of BB. Furthermore, any phi nodes in BB are moved to
Succ and expanded to include the predecessors of Succ as well.

Before attempting this merge, CanPropagatePredecessorsForPHIs checks to see if
all phi nodes can be properly merged. All functional changes are made to
this function, only comments were updated in
TryToSimplifyUncondBranchFromEmptyBlock.

In the original code, CanPropagatePredecessorsForPHIs looks quite convoluted
and more like stack of checks added to handle different kinds of situations
than a comprehensive check. In particular the first check in the function did
some value checking for the case that BB and Succ have a common predecessor,
while the last check in the function simply rejected all cases where BB and
Succ have a common predecessor. The first check was still useful in the case
that BB did not contain any phi nodes at all, though, so it was not completely
useless.

Now, CanPropagatePredecessorsForPHIs is restructured to to look a lot more
similar to the code that actually performs the merge. Both functions now look
at the same phi nodes in about the same order.  Any conflicts (phi nodes with
different values for the same source) that could arise from merging or moving
phi nodes are detected. If no conflicts are found, the merge can happen.

Apart from only restructuring the checks, two main changes in functionality
happened.

Firstly, the old code rejected blocks with common predecessors in most cases.
The new code performs some extra checks so common predecessors can be handled
in a lot of cases. Wherever common predecessors still pose problems, the
blocks are left untouched.

Secondly, the old code rejected the merge when values (phi nodes) from BB were
used in any other place than Succ. However, it does not seem that there is any
situation that would require this check. Even more, this can be proven.

Consider that BB is a block containing of a single phi node "%a" and a branch
to Succ. Now, since the definition of %a will dominate all of its uses, BB
will dominate all blocks that use %a. Furthermore, since the branch from BB to
Succ is unconditional, Succ will also dominate all uses of %a.

Now, assume that one predecessor of Succ is not dominated by BB (and thus not
dominated by Succ). Since at least one use of %a (but in reality all of them)
is reachable from Succ, you could end up at a use of %a without passing
through it's definition in BB (by coming from X through Succ). This is a
contradiction, meaning that our original assumption is wrong. Thus, all
predecessors of Succ must also be dominated by BB (and thus also by Succ).

This means that moving the phi node %a from BB to Succ does not pose any
problems when the two blocks are merged, and any use checks are not needed.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51478 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-23 09:09:41 +00:00
Nick Lewycky
18b3da6c34 Constant integer vectors may also be negated. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51476 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-23 04:54:45 +00:00
Nick Lewycky
02d639fcc0 Revert X + X --> X * 2 optz'n which pessimizes heavily on x86. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51474 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-23 04:34:58 +00:00
Nick Lewycky
8539fe26b7 Implement X + X for vectors. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51472 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-23 04:14:51 +00:00
Nick Lewycky
39ac3b57bc Fix a recently added optimization to not crash on vectors. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51471 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-23 03:26:47 +00:00
Dan Gohman
a332f17c8c Generalize the new code in instcombine's ComputeNumSignBits for handling 
and/or to handle more cases (such as this add-sitofp.ll testcase), and
port it to selectiondag's ComputeNumSignBits.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51469 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-23 02:28:01 +00:00
Dan Gohman
e4977cf750 Make structs and arrays first-class types, and add assembly 
and bitcode support for the extractvalue and insertvalue
instructions and constant expressions.

Note that this does not yet include CodeGen support.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51468 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-23 01:55:30 +00:00
Evan Cheng
b1938263c7 Bug: rcpps can only folds a load if the address is 16-byte aligned. Fixed many 'ps' load folding patterns in X86InstrSSE.td which are missing the proper alignment checks. 
Also fixed some 80 col. violations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51462 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-23 00:37:07 +00:00
Evan Cheng
d86323efc9 Add a couple of test cases. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51441 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-22 21:19:19 +00:00
Evan Cheng
c36c0ab44b Add missing patterns. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51435 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-22 18:56:56 +00:00
Chris Lattner
f6a048c3a8 Add support for multiple-return values in inline asm. This should 
get inline asm working as well as it did previously with the CBE
with the new MRV support for inline asm.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51420 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-22 06:19:37 +00:00
Chris Lattner
9c287c2ab4 testcase for PR2267 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51408 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-22 04:45:22 +00:00
Evan Cheng
f4ea510371 Fix PR2343. An *interesting* coalescer bug. 
BB1:                                                                                                                                                  
  vr1025 = copy vr1024                                                                                                                                
  ..                                                                                                                                                  
BB2:                                                                                                                                                  
  vr1024 = op                                                                                                                                         
         = op vr1025                                                                                                                                     
  <loop eventually branch back to BB1>

Even though vr1025 is copied from vr1024, it's not safe to coalesced them since live range of vr1025 intersects the def of vr1024. This happens when vr1025 is assigned the value of the previous iteration of vr1024 in the loop.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51394 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-21 22:34:12 +00:00
Gabor Greif
a3f334362f resurrect lost tests by renaming them to not end with .tr 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51375 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-21 14:48:24 +00:00
Gabor Greif
5edf210bdf Eliminate questionable syntax for stdin redirection. This probably also speeds things up a bit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51357 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-20 22:07:21 +00:00
Chris Lattner
eb0fdc150a Fix PR2346 by marking vaarg as volatile so that licm doesn't try to 
hoist them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51356 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-20 22:05:28 +00:00
Dan Gohman
7a9708b984 Oops, commit the version of this test that actually works. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51351 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-20 21:19:36 +00:00
Dan Gohman
f35c8822a3 Port SelectionDAG's ComputeNumSignBits-using code to instcombine, 
now that instcombine also has ComputeNumSignBits.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51350 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-20 21:01:12 +00:00
Gabor Greif
f6cadc440c sabre brings to my attention that the 'tr' suffix is also obsolete 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51349 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-20 21:00:03 +00:00
Gabor Greif
722243bd40 Rename the last test with .llx extension to .ll, resolve duplicate test by renaming to isnan2. Now that no test has llx ending there is no need to search for them from dg.exp too. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51328 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-20 19:52:04 +00:00
Evan Cheng
7a0f1851ec More local spiller complexity! 
If local spiller optimization turns some instruction into an identity copy, it will be removed. If the output register happens to be dead (and source is obviously killed), transfer the kill / dead information to last use / def in the same MBB.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51306 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-20 08:13:21 +00:00
Evan Cheng
b0a6f62c9b Don't spill dead def. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51305 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-20 08:10:37 +00:00
Chris Lattner
3d28b1b35b Teach instcombine 4 new xforms: 
(add (sext x), cst) --> (sext (add x, cst'))
  (add (sext x), (sext y)) --> (sext (add int x, y))
  (add double (sitofp x), fpcst) --> (sitofp (add int x, intcst))
  (add double (sitofp x), (sitofp y)) --> (sitofp (add int x, y))

This generally reduces conversions.  For example MiBench/telecomm-gsm
gets these simplifications:

HACK2: 	%tmp67.i142.i.i = sext i16 %tmp6.i141.i.i to i32		; <i32> [#uses=1]
	%tmp23.i139.i.i = sext i16 %tmp2.i138.i.i to i32		; <i32> [#uses=1]
	%tmp8.i143.i.i = add i32 %tmp67.i142.i.i, %tmp23.i139.i.i		; <i32> [#uses=3]
HACK2: 	%tmp67.i121.i.i = sext i16 %tmp6.i120.i.i to i32		; <i32> [#uses=1]
	%tmp23.i118.i.i = sext i16 %tmp2.i117.i.i to i32		; <i32> [#uses=1]
	%tmp8.i122.i.i = add i32 %tmp67.i121.i.i, %tmp23.i118.i.i		; <i32> [#uses=3]
HACK2: 	%tmp67.i.i190.i = sext i16 %tmp6.i.i189.i to i32		; <i32> [#uses=1]
	%tmp23.i.i187.i = sext i16 %tmp2.i.i186.i to i32		; <i32> [#uses=1]
	%tmp8.i.i191.i = add i32 %tmp67.i.i190.i, %tmp23.i.i187.i		; <i32> [#uses=3]
HACK2: 	%tmp67.i173.i.i.i = sext i16 %tmp6.i172.i.i.i to i32		; <i32> [#uses=1]
	%tmp23.i170.i.i.i = sext i16 %tmp2.i169.i.i.i to i32		; <i32> [#uses=1]
	%tmp8.i174.i.i.i = add i32 %tmp67.i173.i.i.i, %tmp23.i170.i.i.i		; <i32> [#uses=3]
HACK2: 	%tmp67.i152.i.i.i = sext i16 %tmp6.i151.i.i.i to i32		; <i32> [#uses=1]
	%tmp23.i149.i.i.i = sext i16 %tmp2.i148.i.i.i to i32		; <i32> [#uses=1]
	%tmp8.i153.i.i.i = add i32 %tmp67.i152.i.i.i, %tmp23.i149.i.i.i		; <i32> [#uses=3]
HACK2: 	%tmp67.i.i.i.i = sext i16 %tmp6.i.i.i.i to i32		; <i32> [#uses=1]
	%tmp23.i.i5.i.i = sext i16 %tmp2.i.i.i.i to i32		; <i32> [#uses=1]
	%tmp8.i.i7.i.i = add i32 %tmp67.i.i.i.i, %tmp23.i.i5.i.i		; <i32> [#uses=3]


This also fixes a bug in ComputeNumSignBits handling select and
makes it more aggressive with and/or.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51302 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-20 05:46:13 +00:00
Dan Gohman
ad2ef21c76 Run vortex-bug as x86-64, which is what the original bug was triggered on. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51289 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-20 00:54:39 +00:00
Devang Patel
52abbf5d8a Do not erase induction variable increment if it is used outside the loop. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51280 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-19 22:23:55 +00:00
Chris Lattner
0c7a9a04e7 convert fptosi(sitofp x) -> x if the fp value has enough bits in its mantissa 
to accurately represent the integer.  This triggers 9 times in 471.omnetpp,
though 8 of those seem to be inlined from the same place.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51271 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-19 20:25:04 +00:00
Chris Lattner
a540623ab1 Fold FP comparisons where one operand is converted from an integer 
type and the other operand is a constant into integer comparisons.
This happens surprisingly frequently (e.g. 10 times in 471.omnetpp),
which are things like this:

	%tmp8283 = sitofp i32 %tmp82 to double	
	%tmp1013 = fcmp ult double %tmp8283, 0.0

Clearly comparing tmp82 against i32 0 is cheaper here.

this also triggers 8 times in gobmk, including this one:

	%tmp375376 = sitofp i32 %tmp375 to double
	%tmp377 = fcmp ogt double %tmp375376, 8.150000e+01

which is comparing an integer against 81.5 :).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51268 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-19 20:18:56 +00:00
Chris Lattner
5e0d71877c be more aggressive about transforming add -> or when the operands have no 
intersecting bits.  This triggers all over the place, for example in lencode,
with adds of stuff like:

	%tmp580 = mul i32 %tmp579, 2	
	%tmp582 = and i32 %b8, 1
and

	%tmp28 = shl i32 %abs.i, 1		
	%sign.0 = select i1 %tmp23, i32 1, i32 0
and
	%tmp344 = shl i32 %tmp343, 2	
	%tmp346 = and i32 %tmp96, 3

etc.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51263 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-19 20:01:56 +00:00
Duncan Sands
1e6a575a8f Check that always_inline functions are inlined 
whether or not -funit-at-a-time is used (C++ uses
it, C doesn't) - it was working before only when
not doing unit-at-a-time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51258 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-19 16:44:44 +00:00
Duncan Sands
ec00fcb33d Fix PR2341 - when the length is 4 use an i32 not 
an i16!  Cleaned up trailing whitespace while there.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51240 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-19 09:27:24 +00:00
Chris Lattner
47c9909a26 Fix PR2339 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51226 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-18 04:11:26 +00:00
Chris Lattner
98f41d2ce7 remove empty file? 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51225 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-18 04:10:18 +00:00
Nick Lewycky
08de1e476c Revert constant-folding change that will miscompile in some cases. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51223 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-17 19:00:05 +00:00
Nick Lewycky
d24ae8703f Constant fold inttoptr and ptrtoint. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51216 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-17 09:03:26 +00:00
Evan Cheng
62df5c9599 Fix test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51191 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-16 17:08:51 +00:00
Owen Anderson
3dc73d398c Move this test from ADCE to loop deletion, where it is more appropriate. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51181 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-16 04:34:19 +00:00
Owen Anderson
ce12a2b71a Use loop deletion instead of ADCE in these tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51180 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-16 04:33:37 +00:00
Owen Anderson
d870b9a4e3 Use loop deletion instead of ADCE for removing loops. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51178 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-16 04:27:38 +00:00
Owen Anderson
90d2736540 Fix this test. It was testing broken behavior in that it required ADCE to eliminate 
a potentially infinite loop, which is undesirable.  Instead, test the LICM behavior
that we're really interested in.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51177 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-16 04:25:09 +00:00
Chris Lattner
b2ae9e34db implement PR2328. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51176 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-16 02:59:42 +00:00
Dale Johannesen
e44b1bd3dc Use common where we mean common, not weak. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51173 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-16 00:52:30 +00:00
Dan Gohman
eedff319dc Revert the change from r51157 in 
test/Verifier/2002-11-05-GetelementptrPointers.ll, which was incorrect.
Instead, fix getIndexedType to not follow pointer types, as
PointerType is a subclass of CompositeType.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51171 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-16 00:16:32 +00:00
Dan Gohman
f20d70d57e Fix a bug in LoopStrengthReduce that caused it to emit IR with 
use-before-def. The problem comes up in code with multiple PHIs where
one PHI is being rewritten in terms of the other, but the other needs
to be casted first. LLVM rules requre the cast instruction to be
inserted after any PHI instructions, but when instructions were
inserted to replace the second PHI value with a function of the first,
they were ended up going before the cast instruction. Avoid this
problem by remembering the location of the cast instruction, when one
is needed, and inserting the expansion of the new value after it.

This fixes a bug that surfaced in 255.vortex on x86-64 when
instcombine was removed from the middle of the loop optimization
passes. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51169 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-15 23:26:57 +00:00
Dale Johannesen
7d75b3a281 Remove the S92 code, which really has nothing to do 
with what the test is testing; makes it pass again on ppc32.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51167 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-15 22:23:54 +00:00
Dale Johannesen
e31d87495a Evan has implemented this on ppc, so run the test there. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51166 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-15 22:22:37 +00:00
Dan Gohman
041e2eb517 IR support for extractvalue and insertvalue instructions. Also, begin 
moving toward making structs and arrays first-class types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51157 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-15 19:50:34 +00:00
Bill Wendling
a6c3112b1f Situations can arise when you have a function called that returns a 'void', but 
is bitcast to return a floating point value. The result of the instruction may
not be used by the program afterwards, and LLVM will happily remove all
instructions except the call. But, on some platforms, if a value is returned as
a floating point, it may need to be removed from the stack (like x87). Thus, we
can't get rid of the bitcast even if there isn't a use of the value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51134 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 22:45:20 +00:00
Devang Patel
ef3682a4fb Simplify internalize pass. Add test case. 
Patch by Matthijs Kooijman!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51114 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 20:01:01 +00:00
Dan Gohman
d64a78c9ed When bit-twiddling CondCode values for integer comparisons produces 
SETOEQ, is it does with (SETEQ & SETULE), map it to SETEQ.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51112 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 18:17:09 +00:00
Tanya Lattner
969c9d3b39 Check if llvm-gcc is available before running tests. Patch by Matthijs Kooijman! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51108 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 16:32:44 +00:00
Duncan Sands
972378a096 Make this test pass on x86-32 linux. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51099 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 09:46:01 +00:00
Dale Johannesen
72997fedab Fix for PR 2323, infinite loop in tail dup. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51063 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 20:06:43 +00:00
Evan Cheng
77f0b7a50a Instead of a vector load, shuffle and then extract an element. Load the element from address with an offset. 
pshufd $1, (%rdi), %xmm0
        movd %xmm0, %eax
=>
        movl 4(%rdi), %eax


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51026 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 08:35:03 +00:00
Owen Anderson
6513c1bf90 Add a testcase for non-local CSE of read-only calls. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51025 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 08:17:44 +00:00
Evan Cheng
fa7fd33a26 On x86, it's safe to treat i32 load anyext as a normal i32 load. Ditto for i8 anyext load to i16. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51019 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 00:54:02 +00:00
Evan Cheng
9bfa03c6fd Xform bitconvert(build_pair(load a, load b)) to a single load if the load locations are at the right offset from each other. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51008 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 23:04:07 +00:00
Dale Johannesen
38eb9f9ae6 New test for tail merging 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51007 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 22:59:44 +00:00
Mikhail Glushenkov
5c98d824f6 Filter option names to escape symbols not allowed as C++ identifiers. 
Makes it possible to use options with names like "Wa,".
Also fixes the -Wall option handling as a side-effect.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50973 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 16:33:06 +00:00
Duncan Sands
9658a2cb3d Testcase for PR2264. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50965 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 13:01:19 +00:00
Duncan Sands
eca2f99958 Testcase for PR2303. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50951 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-10 16:43:10 +00:00
Evan Cheng
50d9e7289b When transforming a vector_shuffle to a load, the base address must not be an undef. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50940 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-10 06:46:49 +00:00
Evan Cheng
c81d50e0f7 Add nounwind. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50931 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-10 02:22:25 +00:00
Evan Cheng
b3e0a6d75c If all sources of a PHI node are defined by an implicit_def, just emit an implicit_def instead of a copy. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50927 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-10 00:17:50 +00:00
Evan Cheng
23573e5be6 Add a pattern to do move the low element of a v4f32 and zero extend the rest. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50922 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-09 23:37:55 +00:00
Evan Cheng
d880b97257 Handle a few more cases of folding load i64 into xmm and zero top bits. 
Note, some of the code will be moved into target independent part of DAG combiner in a subsequent patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50918 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-09 21:53:03 +00:00
Evan Cheng
6c17c6bafa Simplify test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50911 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-09 19:56:32 +00:00
Chris Lattner
7d2cbd2d43 Implement PR2298. This transforms: 
~x < ~y --> y < x
   -x == -y --> x == y



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50882 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-09 05:19:28 +00:00
Evan Cheng
fd17f42bab Use movq to move low half of XMM register and zero-extend the rest. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50874 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-08 22:35:02 +00:00
Chris Lattner
2539e33893 More than just loads can read from memory: readonly calls like strlen 
also need to be checked for memory modifying instructions before we
can sink them.  THis fixes the second half of PR2297.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50860 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-08 17:37:37 +00:00
Chris Lattner
0ef546e639 Make instcombine's DSE respect loads as well as stores. It is not safe to 
delete the first store in:

store x -> p
load p
store y -> p

This is for PR2297.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50859 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-08 17:20:30 +00:00
Chris Lattner
8c073c04bc new testcase. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50841 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-08 04:55:51 +00:00
Evan Cheng
7e2ff77ef0 Handle vector move / load which zero the destination register top bits (i.e. movd, movq, movss (addr), movsd (addr)) with X86 specific dag combine. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50838 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-08 00:57:18 +00:00
Evan Cheng
687bcb2be0 Add nounwind. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50837 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-07 22:59:08 +00:00
Evan Cheng
7ebc06bfd8 Yet another nasty spiller bug. 
%ecx = op
store %cl<kill>, (addr)
(addr) = op %al

It's not safe to unfold the last operand and eliminate store even though %cl is marked kill. It's a sub-register use which means one of its super-register(s) may be used below.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50794 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-07 00:49:28 +00:00
Dan Gohman
42ac929ed9 Fix a bug in the ComputeMaskedBits logic for multiply. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50793 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-07 00:35:55 +00:00
Bill Wendling
12f33baa8a Removing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50786 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 23:56:22 +00:00
Anton Korobeynikov
70e616fa0b Use target triple in tests, not 'realign-stack=0' option. Per request. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50778 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 23:09:29 +00:00
Owen Anderson
f092b64a49 Testcase for r50770. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50771 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 21:01:34 +00:00
Mikhail Glushenkov
2e9e0c2951 Move test files around a bit - fixes the reported number of test cases. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50761 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 18:16:20 +00:00
Mikhail Glushenkov
76b1b24dc8 Use edge weights to choose the right linker based on input language names. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50759 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 18:15:12 +00:00
Mikhail Glushenkov
978d498e40 Add a --linker command-line option, make all tests pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50755 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 18:13:00 +00:00
Mikhail Glushenkov
ceda1734cc Add two (currently failing) tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50752 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 18:11:21 +00:00
Mikhail Glushenkov
35a85e8453 Take object file as input and handle files with the same name correctly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50749 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 18:10:20 +00:00
Mikhail Glushenkov
3c30e6c653 First small tests for llvmc2. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50734 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 17:24:54 +00:00
Duncan Sands
c8d9fe6bf9 Testcase for PR2292. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50718 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 14:56:40 +00:00
Evan Cheng
21037da713 Fix PR2287. Darwin passes mmx values in register in 64-mode, not Linux. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50716 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 07:23:50 +00:00
Dan Gohman
23e1df8b8d Correct the value of LowBits in srem and urem handling in 
ComputeMaskedBits.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50692 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 00:51:48 +00:00
Chris Lattner
8554cc2ea7 Fix a crash when threading a block that includes a MRV call result. 
DemoteRegToStack doesn't work with MRVs yet, because it relies on the
ability to load/store things.

This fixes PR2285.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50667 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-05 20:21:22 +00:00
Mon P Wang
63307c335a Added addition atomic instrinsics and, or, xor, min, and max. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50663 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-05 19:05:59 +00:00
Chris Lattner
b61bfdb56e no need for eh info 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50658 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-05 18:24:33 +00:00
Dan Gohman
a779a9899a Add AsmPrinter support for emitting a directive to declare that 
the code being generated does not require an executable stack.

Also, add target-specific code to make use of this on Linux
on x86. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50634 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-05 00:28:39 +00:00
Owen Anderson
46bb007014 Fix PR1098 by correcting the postdominators analysis. 
Patch by Florian Brandner.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50628 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-04 21:07:35 +00:00
Evan Cheng
5759f97f50 Select vector shift with non-immediate i32 shift amount operand by first moving the operand into the right register. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50619 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-04 09:15:50 +00:00
Evan Cheng
22b942aa4d Add separate intrinsics for MMX / SSE shifts with i32 integer operands. This allow us to simplify the horribly complicated matching code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50601 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-03 00:52:09 +00:00
Chris Lattner
4d5b8ccd07 verify builtin optimization works like gcc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50594 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-02 22:07:34 +00:00
Dan Gohman
1d9cd50677 Fix a mistake in the computation of leading zeros for udiv. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50591 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-02 21:30:02 +00:00
Chris Lattner
e818f770bb strength reduce exp2 into ldexp, rdar://5852514 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50586 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-02 18:43:35 +00:00
Chris Lattner
0b11cbacce specify an arch for non-x86 hosts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50576 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-02 15:11:58 +00:00
Dan Gohman
fddaa3193c Update old-style syntax in some "not grep" tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50560 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-01 23:50:07 +00:00
Dale Johannesen
f1e94f74e5 New test for bug fixed in 50545. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50548 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-01 22:50:14 +00:00
Dan Gohman
e85b7585e9 Fix an overaggressive SimplifyDemandedBits optimization on urem. This 
fixes the 254.gap regression on x86 and the 403.gcc regression on x86-64.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50537 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-01 19:13:24 +00:00
Bill Wendling
4fd49e4a2f Adding testcase. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50536 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-01 18:41:09 +00:00
Chris Lattner
6bf30ab347 don't randomly miscompile seto/setuo just because we are in 
ffastmath mode.  This fixes rdar://5902801, a miscompilation
of gcc.dg/builtins-8.c.

Bill, please pull this into Tak.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50523 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-01 07:26:11 +00:00
Chris Lattner
2facbddb76 fix typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50519 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-01 06:16:48 +00:00
Chris Lattner
b1747f0b23 instcombine does memset optzns. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50518 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-01 06:16:38 +00:00
Chris Lattner
330a0c1527 simplifylibcalls doesn't optimize llvm.memmove, instcombine does. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50517 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-01 06:14:24 +00:00
Chris Lattner
042232df74 move some tests from libcall optimizer suite. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50516 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-01 06:13:48 +00:00
Arnold Schwaighofer
d2ef523673 Really commit the test checking the argument lowering behaviour on x86-64 :). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50478 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 09:19:47 +00:00
Arnold Schwaighofer
30e62c098b Tail call optimization improvements: 
Move platform independent code (lowering of possibly overwritten
arguments, check for tail call optimization eligibility) from
target X86ISelectionLowering.cpp to TargetLowering.h and
SelectionDAGISel.cpp.

Initial PowerPC tail call implementation:

Support ppc32 implemented and tested (passes my tests and
test-suite llvm-test).  
Support ppc64 implemented and half tested (passes my tests).
On ppc tail call optimization is performed if 
  caller and callee are fastcc
  call is a tail call (in tail call position, call followed by ret)
  no variable argument lists or byval arguments
  option -tailcallopt is enabled
Supported:
 * non pic tail calls on linux/darwin
 * module-local tail calls on linux(PIC/GOT)/darwin(PIC)
 * inter-module tail calls on darwin(PIC)
If constraints are not met a normal call will be emitted.

A test checking the argument lowering behaviour on x86-64 was added.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50477 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 09:16:33 +00:00
Owen Anderson
0cad8444cc Move this test to LoopDeletion, where it now passes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50474 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 07:17:22 +00:00
Chris Lattner
69ea9d2308 move lowering of llvm.memset -> store from simplify libcalls 
to instcombine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50472 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 06:39:11 +00:00
Chris Lattner
4103bb9fc6 no reason for simplifylibcalls to simplify intrinsics, instcombine does 
a fine job.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50470 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 06:12:15 +00:00
Chris Lattner
0c58cacb7a remove redundant check. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50469 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-30 06:06:37 +00:00
Owen Anderson
9dcace3caf Fix a bug in memcpyopt where the memcpy-memcpy transform was never being applied because 
we were checking for it in the wrong order.  This caused a miscompilation because the
return slot optimization assumes that the call it is dealing with is NOT a memcpy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50444 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 21:26:06 +00:00
Chris Lattner
40700fe683 don't eliminate load from volatile value on paths where the load is dead. 
This fixes the second half of PR2262


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50430 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 17:28:22 +00:00
Chris Lattner
68608e4dd0 make this test reduced and *valid* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50429 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 17:25:32 +00:00
Chris Lattner
54545ac023 fix a subtle volatile handling bug. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50428 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 17:13:43 +00:00
Chris Lattner
00487995ea new testcase for PR2094. The inline asms should not pin allocas to the 
stack anymore.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50397 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 05:53:29 +00:00
Chris Lattner
cea1fdd174 don't delete the last store to an alloca if the store is volatile. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50390 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 04:58:38 +00:00
Chris Lattner
3fb2968f2f make the vector conversion magic handle multiple results. 
We now compile test2/test3 to:

_test2:
	## InlineAsm Start
	set %xmm0, %xmm1
	## InlineAsm End
	addps	%xmm1, %xmm0
	ret
_test3:
	## InlineAsm Start
	set %xmm0, %xmm1
	## InlineAsm End
	paddd	%xmm1, %xmm0
	ret

as expected.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50389 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 04:48:56 +00:00
Chris Lattner
41f6259a4b add support for multiple return values in inline asm. This is a step 
towards PR2094.  It now compiles the attached .ll file to:

_sad16_sse2:
	movslq	%ecx, %rax
	## InlineAsm Start
	%ecx %rdx %rax %rax %r8d %rdx %rsi
	## InlineAsm End
	## InlineAsm Start
	set %eax
	## InlineAsm End
	ret

which is pretty decent for a 3 output, 4 input asm.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50386 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 04:29:54 +00:00
Evan Cheng
8509fcf8eb Another extract_subreg coalescing bug. 
e.g.
vr1024<2> extract_subreg vr1025, 2
If vr1024 do not have the same register class as vr1025, it's not safe to coalesce this away. For example, vr1024 might be a GPR32 while vr1025 might be a GPR64.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50385 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-29 01:41:44 +00:00
Evan Cheng
8c2f662d84 Add -march=x86. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50380 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 23:31:41 +00:00
Dan Gohman
1d7153976c Update and_ops.ll according to the recent dagcombiner changes. 
Add a new test, and_ops_more.ll, which is XFAIL'd, to
record the parts of and_ops.ll that were affected by this
change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50379 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 23:26:22 +00:00
Evan Cheng
9d32f2aacb Test case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50377 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 22:14:34 +00:00
Dan Gohman
00acf97feb Fix DSE to not eliminate volatile loads with no uses. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50370 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 19:51:27 +00:00
Dan Gohman
23e8b71526 Teach InstCombine's ComputeMaskedBits what SelectionDAG's 
ComputeMaskedBits knows about cttz, ctlz, and ctpop. Teach
SelectionDAG's ComputeMaskedBits what InstCombine's knows
about SRem. And teach them both some things about high bits
in Mul, UDiv, URem, and Sub. This allows instcombine and
dagcombine to eliminate sign-extension operations in
several new cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50358 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 17:02:21 +00:00
Chris Lattner
ffba5821ee Fix PR2256, yet another miscompilation in simplifycfg of i 
multiple return values.

Bill, please pull this into Tak.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50332 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-28 00:19:07 +00:00
Chris Lattner
5a09690446 Implement a signficant optimization for inline asm: 
When choosing between constraints with multiple options,
like "ir", test to see if we can use the 'i' constraint and
go with that if possible.  This produces more optimal ASM in
all cases (sparing a register and an instruction to load it),
and fixes inline asm like this:

void test () {
  asm volatile (" %c0 %1 " : : "imr" (42), "imr"(14));
}

Previously we would dump "42" into a memory location (which
is ok for the 'm' constraint) which would cause a problem
because the 'c' modifier is not valid on memory operands.

Isn't it great how inline asm turns 'missed optimization'
into 'compile failed'??

Incidentally, this was the todo in 
PowerPC/2007-04-24-InlineAsm-I-Modifier.ll

Please do NOT pull this into Tak.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50315 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-27 00:37:18 +00:00
Chris Lattner
998182b380 When SRoA'ing a global variable, make sure the new globals get the 
appropriate alignment.  This fixes a miscompilation of 252.eon on
x86-64 (rdar://5891920).

Bill, please pull this into Tak.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50308 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-26 07:40:11 +00:00
Nate Begeman
aea6a6f717 Feedback from chris 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50305 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 21:47:35 +00:00
Nate Begeman
d35f8ef175 Add a testcase for the recent "handle variable vector insert elt in mem" patch 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50303 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 21:26:59 +00:00
Evan Cheng
b3f346fa36 Update tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50293 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 20:13:47 +00:00
Evan Cheng
10e864276b Special handling for MMX values being passed in either GPR64 or lower 64-bits of XMM registers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50289 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 19:11:04 +00:00
Dan Gohman
23ce502cb7 Remove the code from CodeGenPrepare that moved getresult instructions 
to the block that defines their operands. This doesn't work in the
case that the operand is an invoke, because invoke is a terminator
and must be the last instruction in a block.

Replace it with support in SelectionDAGISel for copying struct values
into sequences of virtual registers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50279 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 18:27:55 +00:00
Chris Lattner
3f8a3e71c7 new testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50274 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 18:11:06 +00:00
Anton Korobeynikov
f380fbdd57 Update test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50272 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 17:54:21 +00:00
Nick Lewycky
280a6e607d Remove 'unwinds to' support from mainline. This patch undoes r47802 r47989 
r48047 r48084 r48085 r48086 r48088 r48096 r48099 r48109 and r48123.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50265 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 16:53:59 +00:00
Evan Cheng
ee472b1081 MMX argument passing fixes: 
On Darwin / Linux x86-32, v8i8, v4i16, v2i32 values are passed in MM[0-2].                                                                                                                                      
On Darwin / Linux x86-32, v1i64 values are passed in memory.                                                                                                                                                    
On Darwin x86-64, v8i8, v4i16, v2i32 values are passed in XMM[0-7].                                                                                                                                     
On Darwin x86-64, v1i64 values are passed in 64-bit GPRs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50257 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 07:56:45 +00:00
Chris Lattner
25453ea49e Loosen up an assertion to allow intrinsics. I really have no 
idea what this code (findNonImmUse) does, so I'm only guessing 
that this is the right thing.  It would be really really nice
if this had comments and perhaps switched to SmallPtrSet
(hint hint) :)

This fixes rdar://5886601, a crash on gcc.target/i386/sse4_1-pblendw.c


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50252 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 05:13:01 +00:00
Chris Lattner
eede65ce6c Don't infininitely thread branches when a threaded edge 
goes back to the block, e.g.:

  Threading edge through bool from 'bb37.us.thread3829' to 'bb37.us' with cost: 1, across block:

bb37.us:		; preds = %bb37.us.thread3829, %bb37.us, %bb33
	%D1361.1.us = phi i32 [ %tmp36, %bb33 ], [ %D1361.1.us, %bb37.us ], [ 0, %bb37.us.thread3829 ]		; <i32> [#uses=2]
	%tmp39.us = icmp eq i32 %D1361.1.us, 0		; <i1> [#uses=1]
	br i1 %tmp39.us, label %bb37.us, label %bb42.us



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50251 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 04:12:29 +00:00
Evan Cheng
2749c72f30 Fix bug in x86 memcpy / memset lowering. If there are trailing bytes not handled by rep instructions, a new memcpy / memset is introduced for them. However, since source / destination addresses are already adjusted, their offsets should be zero. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50239 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-25 00:26:43 +00:00
Evan Cheng
1e8586d175 New test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50229 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-24 20:01:58 +00:00
Devang Patel
ef89bbb436 Add EXTRA_OPTIONS on the llvmgxx command line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50217 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-24 17:59:03 +00:00
Devang Patel
00dd691e75 Add EXTRA_OPTIONS on the llvmgcc command line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50216 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-24 17:54:25 +00:00
Chris Lattner
c9e495c534 Split some code out of the main SimplifyCFG loop into its own function. 
Fix said code to handle merging return instructions together correctly
when handling multiple return values.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50199 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-24 00:01:19 +00:00
Anton Korobeynikov
488fe315ea Fix tests due to llvm2cpp move to llc target 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50191 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 22:41:53 +00:00
Dan Gohman
3dc34f682d Add support to codegen for getresult instructions with undef operands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50180 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 20:21:29 +00:00
Anton Korobeynikov
0e9ddde1cf Disable stack realignment for these tests 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50172 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:25:44 +00:00
Anton Korobeynikov
e44a4b3bd7 Fix test becase ABI stack alignment dropped to 'normal' value 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50171 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:25:16 +00:00
Anton Korobeynikov
51a8feea9b Fix test, instruction count is valid only if stack is not realigned 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50170 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 18:24:48 +00:00
Chris Lattner
c6ee00b8ee Rewrite multiple return value handling in SCCP. Before, the -sccp pass 
would turn every getresult instruction into undef.  This helps with
rdar://5778210


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50140 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 05:38:20 +00:00
Chris Lattner
69e6317083 remove this testcase. It isn't testing loop rotate, it is testing all 
of -std-compile-opts and is now failing because other passes are generating
IR that looks different to input of loop rotate.  Devang, please 
introduce a testcase that only runs loop rotate.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50136 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 05:36:04 +00:00
Chris Lattner
7e4687a9f2 returning an empty multiple return list is not valid. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50135 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 05:29:14 +00:00
Chris Lattner
525af20937 make this test more interesting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50128 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 03:49:32 +00:00
Chris Lattner
ed98501ab7 distill down the essense of this test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50125 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 03:03:42 +00:00
Dale Johannesen
02dc1a7f1f new test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50123 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 01:22:22 +00:00
Evan Cheng
f30752cbcc Don't do: "(X & 4) >> 1 == 2 --> (X & 4) == 4" if there are more than one uses of the shift result. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50118 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-23 00:38:06 +00:00
Chris Lattner
a5ddb59a13 Start doing the significantly useful part of jump threading: handle cases 
where a comparison has a phi input and that phi is a constant.  For example,
stuff like:

  Threading edge through bool from 'bb2149' to 'bb2231' with cost: 1, across block:
bb2237:		; preds = %bb2231, %bb2149
	%tmp2328.rle = phi i32 [ %tmp2232, %bb2231 ], [ %tmp2232439, %bb2149 ]		; <i32> [#uses=2]
	%done.0 = phi i32 [ %done.2, %bb2231 ], [ 0, %bb2149 ]		; <i32> [#uses=1]
	%tmp2239 = icmp eq i32 %done.0, 0		; <i1> [#uses=1]
	br i1 %tmp2239, label %bb2231, label %bb2327

or

bb38.i298:		; preds = %bb33.i295, %bb1693
	%tmp39.i296.rle = phi %struct.ibox* [ null, %bb1693 ], [ %tmp39.i296.rle1109, %bb33.i295 ]		; <%struct.ibox*> [#uses=2]
	%minspan.1.i291.reg2mem.1 = phi i32 [ 32000, %bb1693 ], [ %minspan.0.i288, %bb33.i295 ]		; <i32> [#uses=1]
	%tmp40.i297 = icmp eq %struct.ibox* %tmp39.i296.rle, null		; <i1> [#uses=1]
	br i1 %tmp40.i297, label %implfeeds.exit311, label %bb43.i301

This triggers thousands of times in spec.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50110 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-22 21:40:39 +00:00
Chris Lattner
ae65b3c791 Dig through multiple levels of AND to thread jumps if needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50106 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-22 20:46:09 +00:00
Chris Lattner
6bf77500c6 Teach jump threading to thread through blocks like: 
br (and X, phi(Y, Z, false)), label L1, label L2

This triggers once on 252.eon and 6 times on 176.gcc.  Blocks 
in question often look like this:

bb262:		; preds = %bb261, %bb248
	%iftmp.251.0 = phi i1 [ true, %bb261 ], [ false, %bb248 ]		; <i1> [#uses=4]
	%tmp270 = icmp eq %struct.rtx_def* %tmp.0.i, null		; <i1> [#uses=1]
	%bothcond = or i1 %iftmp.251.0, %tmp270		; <i1> [#uses=1]
	br i1 %bothcond, label %bb288, label %bb273

In this case, it is clear that it doesn't matter if tmp.0.i is null when coming from bb261.  When coming from bb248, it is all that matters.


Another random example:

check_asm_operands.exit:		; preds = %check_asm_operands.exit.thr_comm, %bb30.i, %bb12.i, %bb6.i413
	%tmp.0.i420 = phi i1 [ true, %bb6.i413 ], [ true, %bb12.i ], [ true, %bb30.i ], [ false, %check_asm_operands.exit.thr_comm ; <i1> [#uses=1]
	call void @llvm.stackrestore( i8* %savedstack ) nounwind 
	%tmp4389 = icmp eq i32 %added_sets_1.0, 0		; <i1> [#uses=1]
	%tmp4394 = icmp eq i32 %added_sets_2.0, 0		; <i1> [#uses=1]
	%bothcond80 = and i1 %tmp4389, %tmp4394		; <i1> [#uses=1]
	%bothcond81 = and i1 %bothcond80, %tmp.0.i420		; <i1> [#uses=1]
	br i1 %bothcond81, label %bb4398, label %bb4397

Here is the case from 252.eon:

bb290.i.i:		; preds = %bb23.i57.i.i, %bb8.i39.i.i, %bb100.i.i, %bb100.i.i, %bb85.i.i110
	%myEOF.1.i.i = phi i1 [ true, %bb100.i.i ], [ true, %bb100.i.i ], [ true, %bb85.i.i110 ], [ true, %bb8.i39.i.i ], [ false, %bb23.i57.i.i ]		; <i1> [#uses=2]
	%i.4.i.i = phi i32 [ %i.1.i.i, %bb85.i.i110 ], [ %i.0.i.i, %bb100.i.i ], [ %i.0.i.i, %bb100.i.i ], [ %i.3.i.i, %bb8.i39.i.i ], [ %i.3.i.i, %bb23.i57.i.i ]		; <i32> [#uses=3]
	%tmp292.i.i = load i8* %tmp16.i.i100, align 1		; <i8> [#uses=1]
	%tmp293.not.i.i = icmp ne i8 %tmp292.i.i, 0		; <i1> [#uses=1]
	%bothcond.i.i = and i1 %tmp293.not.i.i, %myEOF.1.i.i		; <i1> [#uses=1]
	br i1 %bothcond.i.i, label %bb202.i.i, label %bb301.i.i
  Factoring out 3 common predecessors.

On the path from any blocks other than bb23.i57.i.i, the load and compare 
are dead.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50096 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-22 07:05:46 +00:00
Chris Lattner
f29984f695 add a basic testcase. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50093 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-22 06:35:14 +00:00
Nick Lewycky
dc2421f786 Start removing 'unwinds to' support from mainline in preparation for 2.3. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50086 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-22 05:16:02 +00:00
Chris Lattner
10c0d9179e optimize "p != gep p, ..." better. This allows us to compile 
getelementptr-seteq.ll into:

define i1 @test(i64 %X, %S* %P) {
	%C = icmp eq i64 %X, -1		; <i1> [#uses=1]
	ret i1 %C
}

instead of:

define i1 @test(i64 %X, %S* %P) {
	%A.idx.mask = and i64 %X, 4611686018427387903		; <i64> [#uses=1]
	%C = icmp eq i64 %A.idx.mask, 4611686018427387903		; <i1> [#uses=1]
	ret i1 %C
}

And fixes the second half of PR2235.  This speeds up the insertion sort
case by 45%, from 1.12s to 0.77s.  In practice, this will significantly
speed up for loops structured like:

for (double *P = Base + N; P != Base; --P)
  ...

Which happens frequently for C++ iterators.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50079 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-22 02:53:33 +00:00
Dan Gohman
61a9213440 Implement an x86-64 ABI detail of passing structs by hidden first 
argument. The x86-64 ABI requires the incoming value of %rdi to
be copied to %rax on exit from a function that is returning a
large C struct.

Also, add a README-X86-64 entry detailing the missed optimization
opportunity and proposing an alternative approach.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50075 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 23:59:07 +00:00
Duncan Sands
92b9d49e4c Make these structs larger to ensure that they 
are returned by struct return.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50038 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 08:17:05 +00:00
Duncan Sands
09eb6e7c25 Make the struct bigger, to ensure it is returned 
by struct return.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50037 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 08:12:03 +00:00
Owen Anderson
a8bd65835b Refactor memcpyopt based on Chris' suggestions. Consolidate several functions 
and simplify code that was fallout from the separation of memcpyopt and gvn.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50034 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-21 07:45:10 +00:00
Chris Lattner
bd381a777b A better fix for my previous patch, MOVZQI2PQIrr just requires SSE2. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49986 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-20 05:52:46 +00:00
Chris Lattner
b15f760cda Not all x86-64 machines have sse3 apparently. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49985 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-20 05:47:56 +00:00
Chris Lattner
5ae21fb23a rename *.llx -> *.ll, last batch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49971 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-19 22:32:52 +00:00
Chris Lattner
1ce9e00f8b rename *.llx -> *.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49970 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-19 22:29:10 +00:00
Chris Lattner
e972299f34 rename *.llx -> *.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49969 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-19 22:26:29 +00:00
Chris Lattner
d881ad2c57 Implement PR2206. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49967 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-19 22:17:26 +00:00
Chris Lattner
1c14c29746 refactor handling of symbolic constant folding, picking up 
a few new cases( see Integer/a1.ll), but not anything that
would happen in practice.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49965 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-19 21:58:19 +00:00
Evan Cheng
8608f2eff2 64-bit atomic operations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49949 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-19 02:30:38 +00:00
Dan Gohman
f4423b1e45 Teach llvm-as to accept function types with multiple return types. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49945 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-19 00:24:39 +00:00
Evan Cheng
639f493ebf Be more careful with insert_subreg and extract_subreg where either source or destination operand has already been coalesced with another register that's defined by a insert_subreg or extract_subreg. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49843 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-17 07:58:04 +00:00
Owen Anderson
241f65321e Make GVN able to remove unnecessary calls to read-only functions again. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49842 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-17 05:36:50 +00:00
Evan Cheng
621d157676 Fix a sub-register indice propagation bug. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49832 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-17 00:06:42 +00:00
Evan Cheng
03eb38848c Don't forget about sub-register indices when rematting instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49830 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-16 23:44:44 +00:00
Evan Cheng
9c1e06e187 After reading memory that's already freed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49810 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-16 20:24:25 +00:00
Evan Cheng
6f0ca06296 Really test what's intended. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49802 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-16 18:21:55 +00:00
Evan Cheng
0d4bdde327 Rewrite LiveVariable liveness computation. The new implementation is much simplified. It eliminated the nasty recursive routines and removed the partial def / use bookkeeping. There is also potential for performance improvement by replacing the conservative handling of partial physical register definitions. The code is currently disabled until live interval analysis is taught of the name scheme. 
This patch also fixed a couple of nasty corner cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49784 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-16 09:46:40 +00:00
Owen Anderson
9eb883a56a XFAIL this test for the moment. The real solution is to prevent ADCE 
from transforming loops and adding a separate loop pass for removing
loops with know trip counts.  Until that happens, ADCE is miscompiling this code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49769 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-16 04:25:42 +00:00
Dan Gohman
171c11ec93 Add support for the form of the SSE41 extractps instruction that 
puts its result in a 32-bit GPR.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49762 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-16 02:32:24 +00:00
Dan Gohman
bcda285fcc Recreate the size SDNode instead of reusing the old one in the x86 
memcpy lowering code; this ensures that the size node has the desired
result type. This fixes a regression from r49572 with @llvm.memcpy.i64
on x86-32.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49761 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-16 01:32:32 +00:00
Dan Gohman
a630f4ed91 Add movd instructions to move from MMX registers 
to 64-bit GPR registers on x86-64.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49757 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-15 23:55:07 +00:00
Dale Johannesen
21d31a8d94 Don't assume a tail call can't reference a byval 
argument to the outer function, this isn't correct.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49731 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-15 17:41:34 +00:00
Dan Gohman
80792f3dde Treat EntryToken nodes as "passive" so that they aren't added to the 
ScheduleDAG; they don't correspond to any actual instructions so they
don't need to be scheduled.

This fixes a bug where the EntryToken was being scheduled multiple
times in some cases, though it ended up not causing any trouble because 
EntryToken doesn't expand into anything. With this fixed the schedulers
reliably schedule the expected number of units, so we can check this
with an assertion.

This requires a tweak to test/CodeGen/X86/loop-hoist.ll because it
ends up getting scheduled differently in a trivial way, though it was
enough to fool the prcontext+grep that the test does.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49701 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-15 01:22:18 +00:00
Dan Gohman
63f7ba085f Upgrade these tests for the current intrinsic prototypes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49669 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-14 18:19:18 +00:00
Dale Johannesen
0a6ee6d131 Remove -unwind-tables-optional everywhere, since 
this is now the default.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49667 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-14 17:56:54 +00:00
Owen Anderson
fa0e66471f The functionality being tested was removed because it was horribly unsafe. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49610 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-13 09:51:06 +00:00
Arnold Schwaighofer
4b5324ad2c This patch corrects the handling of byval arguments for tailcall 
optimized x86-64 (and x86) calls so that they work (... at least for
my test cases).

Should fix the following problems:

Problem 1: When i introduced the optimized handling of arguments for
tail called functions (using a sequence of copyto/copyfrom virtual
registers instead of always lowering to top of the stack) i did not
handle byval arguments correctly e.g they did not work at all :).

Problem 2: On x86-64 after the arguments of the tail called function
are moved to their registers (which include ESI/RSI etc), tail call
optimization performs byval lowering which causes xSI,xDI, xCX
registers to be overwritten. This is handled in this patch by moving
the arguments to virtual registers first and after the byval lowering
the arguments are moved from those virtual registers back to
RSI/RDI/RCX.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49584 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-12 18:11:06 +00:00
Dan Gohman
707e018423 Drop ISD::MEMSET, ISD::MEMMOVE, and ISD::MEMCPY, which are not Legal 
on any current target and aren't optimized in DAGCombiner. Instead
of using intermediate nodes, expand the operations, choosing between
simple loads/stores, target-specific code, and library calls,
immediately.

Previously, the code to emit optimized code for these operations
was only used at initial SelectionDAG construction time; now it is
used at all times. This fixes some cases where rep;movs was being
used for small copies where simple loads/stores would be better.

This also cleans up code that checks for alignments less than 4;
let the targets make that decision instead of doing it in
target-independent code. This allows x86 to use rep;movs in
low-alignment cases.

Also, this fixes a bug that resulted in the use of rep;stos for
memsets of 0 with non-constant memory size when the alignment was
at least 4. It's better to use the library in this case, which
can be significantly faster when the size is large.

This also preserves more SourceValue information when memory
intrinsics are lowered into simple loads/stores.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49572 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-12 04:36:06 +00:00
Dan Gohman
6f836adafe Fix a bug that prevented x86-64 from using rep.movsq for 
8-byte-aligned data.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49571 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-12 02:35:39 +00:00
Evan Cheng
f870fbc554 If a PHI node has a single implicit_def source, replace it with an implicit_def instead of a copy. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49543 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-11 17:54:45 +00:00
Owen Anderson
c008c5e08c Add testcase for PR2213. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49517 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-11 05:13:32 +00:00
Evan Cheng
b94d966716 New test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49514 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-10 23:49:09 +00:00
Dan Gohman
eee962e1ce Teach InstCombine's ComputeMaskedBits to handle pointer expressions 
in addition to integer expressions. Rewrite GetOrEnforceKnownAlignment
as a ComputeMaskedBits problem, moving all of its special alignment
knowledge to ComputeMaskedBits as low-zero-bits knowledge.

Also, teach ComputeMaskedBits a few basic things about Mul and PHI
instructions.

This improves ComputeMaskedBits-based simplifications in a few cases,
but more noticeably it significantly improves instcombine's alignment
detection for loads, stores, and memory intrinsics.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49492 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-10 18:43:06 +00:00
Evan Cheng
172b70c62a A copy instruction may use a register multiple times on some targets. Change them all. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49491 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-10 18:38:47 +00:00
Chris Lattner
db66750753 Fix the x86-64 side of PR2108 by adding a v2f64 version of 
MOVZQI2PQIrr.  This would be better handled as a dag combine 
(with the goal of eliminating the bitconvert) but I don't know
how to do that safely.  Thoughts welcome.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49463 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-10 05:13:43 +00:00
Evan Cheng
80b09fe8bc Teach branch folding pass about implicit_def instructions. Unfortunately we can't just eliminate them since register scavenger expects every register use to be defined. However, we can delete them when there are no intra-block uses. Carefully removing some implicit def's which enable more blocks to be optimized away. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49461 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-10 02:32:10 +00:00
Evan Cheng
7e073baedb - More aggressively coalescing away copies whose source is defined by an implicit_def. 
- Added insert_subreg coalescing support.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49448 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-09 20:57:25 +00:00
Chris Lattner
cc7f168c6c Generalize getUnaryFloatFunction to handle any FP unary function, automatically 
figuring out the suffix to use.  implement pow(2,x) -> exp2(x).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49437 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-09 17:48:11 +00:00
Chris Lattner
090a816623 remove capital letter from test name. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49436 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-09 17:46:36 +00:00
Owen Anderson
a723d1e48f Factor a bunch of functionality related to memcpy and memset transforms out of 
GVN and into its own pass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49419 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-09 08:23:16 +00:00
Evan Cheng
f20d943bc6 Missed a hasInterval check. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49415 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-09 01:30:15 +00:00
Chris Lattner
77d00b0cea many cleanups to the pow optimizer. Allow it to handle powf, 
add support for  pow(x, 2.0) -> x*x.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49411 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-09 00:07:45 +00:00
Duncan Sands
7497b92c2f Check that bodies and calls but not declarations 
are marked nounwind when compiling without
-fexceptions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49393 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-08 19:31:52 +00:00
Dale Johannesen
c8abfdec84 Rename -disable-required-unwind-tables to -unwind-tables-optional. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49391 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-08 18:10:08 +00:00
Gabor Greif
d9c7dbfe44 merge r48768 from branches/ggreif/parallelized-test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49382 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-08 15:22:41 +00:00
Dale Johannesen
a25e5787bc Missed one. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49365 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-08 00:14:59 +00:00
Dale Johannesen
235f7fb474 Add -disable-required-unwind-tables to tests 
that need it (usually, grepping for some string
found in unwind info)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49364 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-08 00:14:17 +00:00
Duncan Sands
f02a8070eb Testcase for pr2169. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49344 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-07 17:03:16 +00:00
Evan Cheng
565ada0b35 Fix test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49343 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-07 17:02:18 +00:00
Chris Lattner
eeb939accb fix this testcase to pass and remove a duplicate instance of itself. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49281 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-06 21:39:17 +00:00
Torok Edwin
4fea2e982d Prefer to expand mask for xor to -1, so we have a chance to turn it into a not. 
If it cannot be expanded, it will keep the old behaviour and try to shrink the constant.
Part of enhancement for PR2191.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49280 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-06 21:23:02 +00:00
Evan Cheng
1dc7869025 1. IMPLICIT_DEF can *re-define* any register. 
2. Coalescer can now create an interesting situation where a register def can
   reaches itself without being killed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49246 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-05 01:27:09 +00:00
Evan Cheng
0c0f83ff5d Favors pshufd over shufps when shuffling elements from one vector. pshufd is faster than shufps. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49244 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-05 00:30:36 +00:00
Evan Cheng
b589d9f42d New test case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49190 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-03 21:25:03 +00:00
Dale Johannesen
4672d5d4db Testcase for EH with functions whose names are stripped. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49111 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-02 20:16:41 +00:00
Dan Gohman
68d599df37 Speculatively micro-optimize memory-zeroing calls on Darwin 10. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49048 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-01 20:38:36 +00:00
Evan Cheng
9845eb5b03 More soft fp fixes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49016 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-01 02:18:22 +00:00
Evan Cheng
110cf48752 Unbreak ARM / Thumb soft FP support. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49012 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-04-01 01:50:16 +00:00
Dale Johannesen
1d3863fdbc Mark functions in some tests as 'nounwind'. Generating 
EH info for these functions causes the tests to fail for
random reasons (e.g. looking for 'or' or counting lines
with asm-printer; labels count as lines.)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49003 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-31 23:20:09 +00:00
Evan Cheng
427f4c106a It's not safe to fold a load from GV stub or constantpool into a two-address use. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49002 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-31 23:19:51 +00:00
Dan Gohman
b061c4bc44 Fix a DAGCombiner optimization to respect volatile qualification. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48994 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-31 20:32:52 +00:00
Chris Lattner
f83e13ae0a add a testcase for forming memset from noncontiguous stores. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48938 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-29 04:51:35 +00:00
Dan Gohman
d4a2ad35e3 Fix a tokenfactor node to use the load chain rather than the 
load value. This fixes PR2177.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48932 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-28 23:45:16 +00:00
Devang Patel
156b2df00d add another testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48881 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-27 17:13:55 +00:00
Devang Patel
53b87db8d3 New test case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48858 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-27 01:51:31 +00:00
Evan Cheng
7a963fa8ee Fix a memory bug: increment an iterator of a deleted machine instr. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48853 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-27 01:27:25 +00:00
Erick Tryzelaar
7c1483bc6f Expose ExecutionEngine::getTargetData() to c and ocaml bindings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48851 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-27 00:27:14 +00:00
Evan Cheng
0c28432852 One more coalescer fix wrt deadness propagation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48837 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-26 20:15:49 +00:00
Evan Cheng
ed70cbb3f3 Avoid commuting a def MI in order to coalesce a copy instruction away if any use of the same val# is a copy instruction that has already been coalesced. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48833 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-26 19:03:01 +00:00
Dale Johannesen
27c31054ec Use ## for comment delimiter on darwin x86-32, so 
llvm's output .s files will go through gcc -std=c99
without triggering preprocesser errors.  Approach
suggested by Daveed Vandevoorde.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48808 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-25 23:29:30 +00:00
Evan Cheng
26471c48b3 Handle a special case xor undef, undef -> 0. Technically this should be transformed to undef. But this is such a common idiom (misuse) we are going to handle it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48792 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-25 20:08:07 +00:00
Evan Cheng
d34af7875b Handle a special case xor undef, undef -> 0. Technically this should be transformed to undef. But this is such a common idiom (misuse) we are going to handle it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48791 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-25 20:07:13 +00:00
Dan Gohman
27845362d9 Add CMP32mr and friends to the load-unfolding table. Among 
other things, this allows the scheduler to unfold a load operand
in the 2008-01-08-SchedulerCrash.ll testcase, so it now successfully
clones the comparison to avoid a pushf+popf.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48777 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-25 16:53:19 +00:00
Gordon Henriksen
1d21395f4c Tests for the instruction iterator bindings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48775 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-25 16:35:08 +00:00
Tanya Lattner
6f729d601c Byebye llvm-upgrade! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48762 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-25 04:26:08 +00:00
Evan Cheng
a2fb634def lastRegisterUse() should ignore identity copies. Those will be erased. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48759 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-25 02:02:19 +00:00
Devang Patel
d804f8ff70 check struct layout 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48758 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-25 00:47:49 +00:00
Bill Wendling
3e98c30cf5 Use the bit size of the operand instead of the hard-coded 32 to generate the 
mask.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48750 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-24 23:16:37 +00:00
Evan Cheng
62a3f1538c - SSE4.1 extractfps extracts a f32 into a gr32 register. Very useful! Not. Fix the instruction specification and teaches lowering code to use it only when the only use is a store instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48746 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-24 21:52:23 +00:00
Devang Patel
60a12907c3 Add incoming value from header only if phi node has any use inside the loop. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48738 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-24 20:16:14 +00:00
Devang Patel
fb0f58302a Fix test name. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48733 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-24 18:08:07 +00:00
Chris Lattner
0b26a31ae6 apparently tclsh doesn't lex like bash. Weird. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48732 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-24 17:41:57 +00:00
Chris Lattner
263250b131 pass the option so this test tests the right thing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48731 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-24 17:36:38 +00:00
Devang Patel
eee4f8490b Add new test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48730 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-24 17:16:39 +00:00
Devang Patel
648deab93b Remove incorrect comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48728 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-24 16:58:20 +00:00
Dan Gohman
4c931fc6e2 APIntify SelectionDAG's EXTRACT_ELEMENT code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48726 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-24 16:38:05 +00:00
Evan Cheng
b98a10e8a3 Transform (zext (or (icmp), (icmp))) to (or (zext (cimp), (zext icmp))) if at least one of the (zext icmp) can be transformed to eliminate an icmp. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48715 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-24 00:21:34 +00:00
Gordon Henriksen
4733be3893 Objective Caml bindings for basic block, function, global, and arg iterators. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48711 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-23 22:21:29 +00:00
Bill Wendling
d59c517a83 New testcase. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48697 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-22 22:27:01 +00:00
Owen Anderson
856254026f Use normal naming convention for test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48693 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-22 21:08:33 +00:00
Anton Korobeynikov
ef30c1d006 Add testcase for prev. commit. Minor fixes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48686 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-22 08:37:05 +00:00
Anton Korobeynikov
591858a403 Support chained aliases for LLVM IR printing. This fixes PR2145 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48684 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-22 08:17:17 +00:00
Chris Lattner
b017c9e89c implement an initial hack at a straight-line store -> memset optimization. 
This fires dozens of times across spec and multisource, but I don't know
if it actually speeds stuff up.  Hopefully the testers will show something
nice :)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48680 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-22 05:37:16 +00:00
Evan Cheng
08b1173971 Teach DAG combiner to commute commutable binary nodes in order to achieve sdisel CSE. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48673 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-22 01:55:50 +00:00
Dan Gohman
f1d3d666c1 Handle getresult instructions in different basic blocks 
from their aggregate operands by moving the getresult
instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48657 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-21 21:01:32 +00:00
Duncan Sands
4c88cc9c2a Testcase for PR2160. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48655 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-21 20:22:11 +00:00
Chris Lattner
24e0a546b4 Add support for calls that return two FP values in 
ST(0)/ST(1).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48634 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-21 06:38:26 +00:00
Chris Lattner
ae60ddc22a disable a bogus assertion. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48633 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-21 06:01:05 +00:00
Chris Lattner
0353526ed1 Enable support for returning two long-double values in ST(0)/ST(1). 
This allows us to compile fp-stack-2results.ll into:

_test:
	fldz
	fld1
	ret

which returns 1 in ST(0) and 0 in ST(1).  This is needed for x86-64
_Complex long double.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48632 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-21 05:57:20 +00:00
Chris Lattner
41dc0fcb68 Teach masked value is zero about add and sub, and use MVIZ to 
simplify things like (X & 4) >> 1 == 2  --> (X & 4) == 4.

since it is obvious that the shift doesn't remove any bits.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48631 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-21 05:19:58 +00:00
Evan Cheng
fa5a91a71e Undo 48570. Correctly match mmx shift instructions with an immediate operand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48627 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-21 00:40:09 +00:00
Evan Cheng
260e07ec8c Fix this xform: (sra (shl X, m), result_size) -> (sign_extend (trunc (shl X, result_size - n - m))) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48578 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-20 02:18:41 +00:00
Devang Patel
bed7e68498 Keep track of analysis information inherited from Module pass manager. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48576 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-20 01:09:53 +00:00
Scott Michel
79698f60c4 Add more patterns to match in the integer comparison test harnesses. 
Fix bugs encountered, mostly due to range matching for immediates;
the CellSPU's 10-bit immediates are sign extended, covering a
larger range of unsigned values.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48575 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-20 00:51:36 +00:00
Evan Cheng
dff1dcac6c Add intrinsics to match mmx shift builtin's with immediate operand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48569 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-19 23:38:52 +00:00
Dan Gohman
7925ed05d0 Add support for multiple return values for the PPC target by 
converting call result lowering to use the CallingConvLowering
infastructure.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48552 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-19 21:39:28 +00:00
Christopher Lamb
15cbde3cf6 Fix X86's isTruncateFree to not claim that truncate to i1 is free. This fixes Bill's testcase that failed for r48491. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48542 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-19 08:30:06 +00:00
Tanya Lattner
e6d5d39c07 Upgrade tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48538 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-19 07:28:33 +00:00
Tanya Lattner
ce7d5db4d8 Upgrade tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48536 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-19 05:39:35 +00:00
Tanya Lattner
7f40dea2f1 Upgrade tests to not use llvm-upgrade. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48530 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-19 04:36:04 +00:00
Tanya Lattner
f396cc8730 Upgrade tests to not use llvm-upgrade. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48529 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-19 04:14:49 +00:00
Tanya Lattner
3a4c856323 Remove llvm-upgrade and update tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48527 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-19 03:47:13 +00:00
Evan Cheng
82a6d23700 Fixed a coalescer bug caused by a typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48526 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-19 02:26:36 +00:00
Gordon Henriksen
dc1ce7bdc6 C and Objective Caml bindings for the various getParent methods of the IR. 
Based on Erick Tryzelaar's patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48523 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-19 01:11:35 +00:00
Evan Cheng
94202018c5 Fix live variables issues: 
1. If part of a register is re-defined, an implicit kill and an implicit def are added to denote read / mod / write. However, this should only be necessary if the register is actually read later. This is a performance issue.
2. If a sub-register is being defined, and it doesn't have a previous use, do not add a implicit kill to the last use of a super-register:
   = EAX, AX<imp-use,kill>
...
AX =
In this case, EAX is live but AX is killed, this is wrong and will cause the coalescer to do bad things.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48521 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-19 00:52:20 +00:00
Evan Cheng
586ccac4ec Fix a x86-64 isel lowering bug that's been around forever. A x86-64 varargs function implicitly reads X86::AL, don't clobber it! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48515 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-18 23:36:35 +00:00
Bill Wendling
dbfd894561 It might be nice to have this run as x86 on non-x86 platforms... 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48511 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-18 22:38:22 +00:00
Bill Wendling
2974e49019 Temporarily revert r48491. It's breaking test/CodeGen/X86/xorl.ll. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48510 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-18 22:29:51 +00:00
Daniel Berlin
d3bf1aef3f Fix PR 2160 by making sure arguments to external functions get marked as pointing to anything 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48509 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-18 22:22:53 +00:00
Tanya Lattner
856ce2da14 Do not pass -g flag when compiling tests, so remove the C.Flags. This only happens if you have a debug build of llvm. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48498 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-18 19:59:04 +00:00
Dale Johannesen
cf49819877 Make conversions of i8/i16 to ppcf128 work. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48493 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-18 17:28:38 +00:00
Christopher Lamb
981576c818 Target independent DAG transform to use truncate for field extraction + sign extend on targets where this is profitable. Passes nightly on x86-64. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48491 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-18 16:46:39 +00:00
Evan Cheng
3c88d742d4 Rewrite code that propagate isDead information after a dead copy is coalesced. This remove some ugly spaghetti code and fixed a number of subtle bugs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48490 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-18 08:26:47 +00:00
Tanya Lattner
683283763f Upgrade tests to not use llvm-upgrade. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48484 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-18 04:14:37 +00:00
Tanya Lattner
f04d8d1593 Upgrade tests to not use llvm-upgrade. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48483 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-18 03:45:45 +00:00
Chris Lattner
9493268124 ensure we continue matching x86-64 rotates. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48437 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-17 01:35:03 +00:00
Gordon Henriksen
3e0c835593 C and Objective Caml bindings for the TargetData class. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48422 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-16 20:08:03 +00:00
Gordon Henriksen
41ba1546eb C and Objective Caml bindings for several scalar transforms. 
Patch originally by Erick Tryzelaar, but has been modified somewhat.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48419 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-16 16:32:40 +00:00
Nick Lewycky
3f63785cc6 All of these tests had out of date syntax and were never even running through 
llvm-upgrade because nobody noticed them failing.

Update to use new syntax and actually check for the right failure by looking at
the error message.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48417 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-16 07:55:46 +00:00
Nick Lewycky
917a5d9425 Functions are allowed to return structures. (Note that this test never failed.) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48416 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-16 07:49:49 +00:00
Nick Lewycky
2476841553 Regressions/ is long gone. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48415 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-16 07:31:23 +00:00
Gordon Henriksen
d78c0f5a72 C and Objective Caml bindings for PassManagers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48413 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-16 04:20:44 +00:00
Evan Cheng
c17ba8a28d Fix PR2138. Apparently any modification to a std::multimap (including remove entries for a different key) can invalidate multimap iterators. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48371 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-14 20:44:01 +00:00
Bill Wendling
b9d4f8df70 The inst combining of inttoptr into GEP with one index was using the bit size of 
the type instead of the byte size. This was causing troublesome mis-compilations.

True to form, this took 2 days to find and is a one-line fix. :-P


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48354 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-14 05:12:19 +00:00
Dan Gohman
002e5d0a17 More APInt-ification. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48344 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-13 22:13:53 +00:00
Owen Anderson
8a97fddbc2 Fix a bug in GVN that Duncan noticed, where we potentially need to insert a 
pointer bitcast when performing return slot optimization.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48343 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-13 22:07:10 +00:00
Tanya Lattner
200d607b45 Fix error in testing for END. notation. 
Patch by Julien Lerouge. Thanks!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48342 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-13 22:02:51 +00:00
Evan Cheng
a56516ee08 New test case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48338 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-13 08:05:02 +00:00
Evan Cheng
d99464d647 A test case I forgot to check in. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48335 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-13 06:42:46 +00:00
Evan Cheng
875357d213 TwoAddressInstructionPass enhancement. After it converts a two address instruction into a 3-address one, sink it past the instruction that kills the read-mod-write register if its definition is used past the kill. This reduces the number of live register by one. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48333 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-13 06:37:55 +00:00
Evan Cheng
9e23336d0c Experimental scheduler change to schedule / coalesce the copies added for function livein's. Take 2008-03-10-RegAllocInfLoop.ll, the schedule looks like this after these copies are inserted: 
entry: 0x12049d0, LLVM BB @0x1201fd0, ID#0:
Live Ins: %EAX %EDX %ECX
        %reg1031<def> = MOVPC32r 0
        %reg1032<def> = ADD32ri %reg1031, <es:_GLOBAL_OFFSET_TABLE_>, %EFLAGS<imp-def>
        %reg1028<def> = MOV32rr %EAX
        %reg1029<def> = MOV32rr %EDX
        %reg1030<def> = MOV32rr %ECX
        %reg1027<def> = MOV8rm %reg0, 1, %reg0, 0, Mem:LD(1,1) [0x1201910 + 0]
        %reg1025<def> = MOV32rr %reg1029
        %reg1026<def> = MOV32rr %reg1030
        %reg1024<def> = MOV32rr %reg1028

The copies unnecessarily increase register pressure and it will end up requiring a physical register to be spilled.

With -schedule-livein-copies:
entry: 0x12049d0, LLVM BB @0x1201fa0, ID#0:
Live Ins: %EAX %EDX %ECX
        %reg1031<def> = MOVPC32r 0
        %reg1032<def> = ADD32ri %reg1031, <es:_GLOBAL_OFFSET_TABLE_>, %EFLAGS<imp-def>
        %reg1024<def> = MOV32rr %EAX
        %reg1025<def> = MOV32rr %EDX
        %reg1026<def> = MOV32rr %ECX
        %reg1027<def> = MOV8rm %reg0, 1, %reg0, 0, Mem:LD(1,1) [0x12018e0 + 0]

Much better!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48307 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-12 22:19:41 +00:00
Dan Gohman
89964b4ca1 Fix this test on hosts that don't have sse2. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48296 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-12 20:40:51 +00:00
Chris Lattner
37f603f5d7 no need to keep around this output. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48285 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-12 17:14:06 +00:00
Owen Anderson
6bb0bd52ec Improve the return slot optimization to be both more aggressive (not limited to sret parameters), and 
safer (when the passed pointer might be invalid).  Thanks to Duncan and Chris for the idea behind this, 
and extra thanks to Duncan for helping me work out the trap-safety.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48280 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-12 07:37:44 +00:00
Dan Gohman
38459f01c0 Make this test x86-specific for now; targets that don't use 
the automated CallingConv code to handle return values typically
don't support multiple return values.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48265 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-12 00:25:14 +00:00
Devang Patel
8f9b551147 Fix attribute handling. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48262 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-12 00:07:03 +00:00
Dan Gohman
cb5b317890 Basic feature test for multiple return values in codegen. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48260 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-11 23:53:16 +00:00
Anton Korobeynikov
f1765e8298 Testcase for PR2137 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48258 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-11 22:43:42 +00:00
Devang Patel
7db30ba701 Handle multiple ret values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48254 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-11 22:24:29 +00:00
Dan Gohman
882d87d168 Check to see if a two-entry PHI block can be simplified 
before trying to merge the block into its predecessors.
This allows two-entry-phi-return.ll to be simplified
into a single basic block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48252 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-11 21:53:06 +00:00
Dan Gohman
a8ab8938a7 Make this test more challenging to help it avoid being 
optimized away before it tests what it is intended to test.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48251 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-11 21:47:57 +00:00
Anton Korobeynikov
0fb2033f91 Update testcase for recent aliases change 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48250 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-11 21:42:20 +00:00
Dan Gohman
6a6d27ac0b Add a test to ensure that all-ones vectors are materialized with pcmpeqd. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48247 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-11 21:37:00 +00:00
Dan Gohman
9736028d84 Use the correct value for InSignBit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48245 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-11 21:29:43 +00:00
Chris Lattner
e12ecf272d Implement basic support for the 'f' register class constraint. This basically 
works, but probably won't if you mix it with 't' or 'u' yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48243 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-11 19:50:13 +00:00
Dale Johannesen
01c18a7275 The feature this is testing did not work in the general case, 
and has been removed.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48232 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-11 17:48:26 +00:00
Evan Cheng
9a8094159d Learn how to xfail a test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48219 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-11 07:51:31 +00:00
Evan Cheng
676dd7c80b When the register allocator runs out of registers, spill a physical register around the def's and use's of the interval being allocated to make it possible for the interval to target a register and spill it right away and restore a register for uses. This likely generates terrible code but is before than aborting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48218 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-11 07:19:34 +00:00
Evan Cheng
de13acf862 XFAIL due to Dale's change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48216 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-11 07:15:44 +00:00
Devang Patel
7c490d4104 Initial multiple return values support. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48210 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-11 05:46:42 +00:00
Dan Gohman
43ca31e3dc Upgrade this test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48207 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-11 02:19:59 +00:00
Dan Gohman
034f60ed24 Generalize ExpandIntToFP to handle the case where the operand is legal 
and it's the result that requires expansion. This code is a little confusing
because the TargetLoweringInfo tables for [US]INT_TO_FP use the operand type
(the integer type) rather than the result type. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48206 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-11 01:59:03 +00:00
Scott Michel
405fba12ce - Style cleanup in IA64ISelLowering.h: add 'virtual' keyword for consistency. 
- Add test pattern matching in CellSPU's icmp32.ll test harness
- Fix CellSPU fcmp.ll-generated assert.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48197 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-10 23:49:09 +00:00
Chris Lattner
03fdec04d1 Don't emit FP_REG_KILL into a block that just returns. Nothing 
can be live out of the block anyway, so it isn't needed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48192 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-10 23:34:12 +00:00
Dan Gohman
a2e9485e34 Implement more support for fp-to-i128 and i128-to-fp conversions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48189 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-10 23:03:31 +00:00
Bill Wendling
2b65c4e7cc Update llc flags for PPC register scavenger. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48187 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-10 22:59:08 +00:00
Anton Korobeynikov
8b9998ecc5 This passes now 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48178 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-10 22:34:11 +00:00
Dan Gohman
76c605b18e Fix mul expansion to check the correct number of bits for 
zero extension when checking if an unsigned multiply is
safe.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48171 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-10 20:42:19 +00:00
Dale Johannesen
9faa255740 The __sync primitives only work on x86 and alpha; 
xfail this test elsewhere.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48164 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-10 18:38:31 +00:00
Devang Patel
3e030e41ae Simplify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48163 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-10 18:38:30 +00:00
Dale Johannesen
1da3d2743e Add -m32 to compilation line; test is only valid in 
32-bit environment.  PR 2136.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48159 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-10 17:56:53 +00:00
Dale Johannesen
45bcbf491c These tests don't work unless SSE2 is active. 
Judging from the checking comments this is intentional,
so add the flag (makes them pass on non-x86 host).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48157 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-10 17:33:57 +00:00
Dale Johannesen
ca765303fb There is no "-mattr=+sse1" flag; fix test for non-x86 hosts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48156 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-10 17:13:37 +00:00
Scott Michel
78c47fa50b Integer comparison tests for CellSPU. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48152 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-10 16:58:52 +00:00
Evan Cheng
4ff3f1cc57 - Fix a subtle bug in RemoveCopyByCommutingDef. ALR is the live range where the source is defined; BLR is the live range which is defined by the copy. 
If ALR and BLR overlaps and end of BLR extends beyond end of ALR, e.g.                                                                                                 
 A = or A, B                                                                                                                                                            
 ...                                                                                                                                                                    
 B = A                                                                                                                                                                  
 ...                                                                                                                                                                    
 C = A<kill>                                                                                                                                                            
 ...                                                                                                                                                                    
   = B                                                                                                                                                                  
                                                                                                                                                                        
then do not add kills of A to the newly created B interval.
- Also fix some kill info update bug.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48141 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-10 08:11:32 +00:00
Tanya Lattner
ceca194c43 Remove llvm-upgrade and update tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48137 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-10 07:21:50 +00:00
Evan Cheng
f79e60649a Avoid creating BUILD_VECTOR of all zero elements of "non-normalized" type (e.g. v8i16 on x86) after legalizer. Instruction selection does not expect to see them. In all likelihood this can only be an issue in a bugpoint reduced test case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48136 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-10 07:19:13 +00:00
Chris Lattner
8d88dbcbae remove an execution test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48135 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-10 06:53:14 +00:00
Chris Lattner
3efa1a77b2 switch from hard coded g++/as tools to the ones detected from 
the build system.  Patch by Joachim Durchholz  for PR2121



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48134 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-10 06:52:10 +00:00
Chris Lattner
27137a5e34 Fix a typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48133 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-10 06:49:40 +00:00
Chris Lattner
aadbda85a0 Fix PR2120 by changing the replacement order to change compile_cxx 
before compile_c.  Patch by Joachim Durchholz!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48132 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-10 06:45:35 +00:00
Nick Lewycky
9be3c97183 Turn unwind_to into "unwinds to". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48123 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-10 02:20:00 +00:00
Anton Korobeynikov
29c8c37045 This works on x86_64 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48121 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-09 22:24:03 +00:00
Evan Cheng
7a0690d1b6 Fix RUN line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48116 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-09 19:55:22 +00:00
Anton Korobeynikov
e2dc21aa1d Temporary XFAIL the test, until I'll commit a fix 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48110 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-09 16:24:04 +00:00
Chris Lattner
f30e1cf9b7 teach X86InstrInfo::copyRegToReg how to copy into ST(0) from 
an RFP register class.

Teach ScheduleDAG how to handle CopyToReg with different src/dst 
reg classes.

This allows us to compile trivial inline asms that expect stuff
on the top of x87-fp stack.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48107 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-09 09:15:31 +00:00
Chris Lattner
02b6d25a27 Add ScheduleDAG support for copytoreg where the src/dst register are 
in different register classes, e.g. copy of ST(0) to RFP*.  This gets
some really trivial inline asm working that plops things on the top of
stack (PR879)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48105 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-09 08:49:15 +00:00
Tanya Lattner
76806b6a43 Remove llvm-upgrade and update tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48103 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-09 08:16:40 +00:00
Nick Lewycky
3f4cc3101e Firstly, having a BranchInst isn't exclusive with having an unwind_to. 
Secondly, we have to check whether the branch is actually pointing to the block
with the unwind in it. We could have gotten here because of the unwind_to alone.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48099 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-09 07:50:37 +00:00
Nick Lewycky
db96ae9607 A BB that unwind_to an "unwind" inst is that same as one that doesn't unwind_to 
at all.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48096 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-09 07:36:38 +00:00
Chris Lattner
ce6e492997 reduce this testcase more 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48092 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-09 06:57:21 +00:00
Chris Lattner
67f453aae7 Finish implementing a readme entry: when inserting an i64 variable 
into a vector of zeros or undef, and when the top part is obviously
zero, we can just use movd + shuffle.  This allows us to compile
vec_set-B.ll into:

_test3:
	movl	$1234567, %eax
	andl	4(%esp), %eax
	movd	%eax, %xmm0
	ret

instead of:

_test3:
	subl	$28, %esp
	movl	$1234567, %eax
	andl	32(%esp), %eax
	movl	%eax, (%esp)
	movl	$0, 4(%esp)
	movq	(%esp), %xmm0
	addl	$28, %esp
	ret



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48090 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-09 05:42:06 +00:00
Nick Lewycky
6af31aab63 Update the inliner and simplifycfg to handle unwind_to. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48086 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-09 05:10:13 +00:00
Nick Lewycky
c0d025f54f Prune the unwind_to labels on BBs that don't need them. Another step in the 
removal of invoke, PR1269.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48084 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-09 04:55:16 +00:00
Chris Lattner
62098040a1 Implement a readme entry, compiling 
#include <xmmintrin.h>
__m128i doload64(short x) {return _mm_set_epi16(0,0,0,0,0,0,0,1);}

into:
	movl	$1, %eax
	movd	%eax, %xmm0
	ret

instead of a constant pool load.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48063 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-09 01:05:04 +00:00
Chris Lattner
8aca4b13a8 upgrade this test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48062 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-09 00:32:10 +00:00
Chris Lattner
da8de316a8 make this test harder 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48061 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-09 00:30:06 +00:00
Chris Lattner
f3ba434781 Teach SD some vector identities, allowing us to compile vec_set-9 into: 
_test3:
	movd	%rdi, %xmm1
	#IMPLICIT_DEF %xmm0
	punpcklqdq	%xmm1, %xmm0
	ret

instead of:

_test3:
	#IMPLICIT_DEF %rax
	movd	%rax, %xmm0
	movd	%rdi, %xmm1
	punpcklqdq	%xmm1, %xmm0
	ret

This is still not ideal.  There is no reason to two xmm regs.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48058 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-08 23:43:36 +00:00
Andrew Lenharth
ebb8d7ba16 much simpler test case 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48045 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-08 02:05:22 +00:00
Evan Cheng
27b7db549e Implement x86 support for @llvm.prefetch. It corresponds to prefetcht{0|1|2} and prefetchnta instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48042 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-08 00:58:38 +00:00
Dan Gohman
a2fcff4d97 Add support for calls with i128 return values on ppc64. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48041 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-08 00:19:12 +00:00
Andrew Lenharth
b009d220aa add dropped section test case for PR2123 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48033 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-07 21:19:43 +00:00
Dan Gohman
9ed06db5c8 Add support for lowering 128-bit shifts on ppc64. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48029 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-07 20:36:53 +00:00
Evan Cheng
d68f47c6fd Fixed a register scavenger bug. If a def is re-defining part of a super register, there must be an implicit def of the super-register on the MI. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48024 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-07 20:12:54 +00:00
Devang Patel
12a466b9d0 Update inliner to handle functions that return multiple values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48020 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-07 20:06:16 +00:00
Devang Patel
160e08fb3e Place for sret promotion tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48016 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-07 20:00:15 +00:00
Chris Lattner
d1108222fd mark frem as expand for all legal fp types on x86, regardless of whether 
we're using SSE or not.  This fixes PR2122.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48006 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-07 06:36:32 +00:00
Bill Wendling
65bc122045 Add testcase. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48005 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-06 23:34:22 +00:00
Gabor Greif
2cf36e0772 some more spelling changes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47996 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-06 10:51:21 +00:00
Evan Cheng
433f6f62ca Constant fold SIGN_EXTEND_INREG with ashr not lshr. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47992 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-06 08:20:51 +00:00
Nick Lewycky
819a66cf25 Exercise the new CFG change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47990 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-06 06:55:58 +00:00
Nick Lewycky
64df3bc625 Commit the testcase too. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47988 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-06 06:50:03 +00:00
Nick Lewycky
c1a2a61201 Don't try to simplify urem and srem using arithmetic rules that don't work 
under modulo (overflow). Fixes PR1933.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47987 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-06 06:48:30 +00:00
Scott Michel
4cb8bd8eff Refine Cell's i64 constant generation code to cover more constants where the 
upper and lower 32-bits are the same (in addition to 0 and -1 previously.)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47985 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-06 04:02:54 +00:00
Scott Michel
53dec47f3b - Expand tabs to spaces. 
- select_bits.ll now fully functional now that PR1993 is closed. It was
  previously broken by refactoring in SPUInstrInfo.td and using multiclasses.
- Same for eqv.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47972 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-05 23:00:19 +00:00
Evan Cheng
ecb2a8b9bc Fix a coalescer bug wrt how dead copy interval is shortened. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47966 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-05 22:09:42 +00:00
Andrew Lenharth
f697ec3e53 test for something more interesting than not crashing 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47962 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-05 20:24:26 +00:00
Andrew Lenharth
673d1bc036 sync ops on ptrs, was breaking libgomp 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47960 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-05 19:48:27 +00:00
Anton Korobeynikov
6af4a751a2 Fix test not to emit junk into source directory 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47947 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-05 15:44:25 +00:00
Anton Korobeynikov
038557dd18 Testcase for PR2054 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47946 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-05 15:43:58 +00:00
Chris Lattner
ec4a5672f8 Generalize FP constant shrinking optimization to apply to any vt 
except ppc long double.  This allows us to shrink constant pool
entries for x86 long double constants, which in turn allows us to
use flds/fldl instead of fldt.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47938 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-05 06:48:13 +00:00
Evan Cheng
6fd599fa69 Add a target lowering hook to control whether it's worthwhile to compress fp constant. 
For x86, if sse2 is available, it's not a good idea since cvtss2sd is slower than a movsd load and it prevents load folding. On x87, it's important to shrink fp constant since fldt is very expensive.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47931 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-05 01:30:59 +00:00
Bill Wendling
3fab77eb25 Use -enable-ppc-regscavenger flag for these checks 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47916 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-04 23:16:26 +00:00
Devang Patel
37963556e3 Use cast instead of dyn_cast. 
Update test to use multiple return value directly, instead of relying on -sretpromotion.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47907 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-04 21:45:28 +00:00
Devang Patel
dc00d42bb1 Handle multiple return values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47904 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-04 21:15:15 +00:00
Evan Cheng
a26e0fe1b4 Really fix the test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47882 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-04 08:01:56 +00:00
Evan Cheng
6a2286a045 Fix broken test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47881 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-04 07:59:13 +00:00
Evan Cheng
f92dd28ab7 Add PR1501 test case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47874 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-04 00:47:45 +00:00
Bill Wendling
7194aaf738 This is the initial check-in for adding register scavenging to PPC. (Currently, 
PPC-64 doesn't work.) This also lowers the spilling of the CR registers so that
it uses a register other than the default R0 register (the scavenger scrounges
for one). A significant part of this patch fixes how kill information is
handled.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47863 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-03 22:19:16 +00:00
Chris Lattner
c2a324fa36 new testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47858 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-03 21:59:00 +00:00
Chris Lattner
767486b1d5 Evan implemented these. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47828 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-02 18:05:14 +00:00
Chris Lattner
3be4893dce Evan implemented this. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47827 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-02 17:56:29 +00:00
Chris Lattner
a4239e7367 add a testcase for misc vector stuff 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47826 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-02 08:57:59 +00:00
Nick Lewycky
f58d4dec98 Oops, can't unwind to the entry block (entry block may have no preds). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47808 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-02 03:34:55 +00:00
Nick Lewycky
fc82fabe00 Add an unwind_to field to basic blocks, making them Users instead of Values. 
This is the first checkin for PR1269, the new EH infrastructure.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47802 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-02 02:48:09 +00:00
Tanya Lattner
ec9a35a6f9 Remove llvm-upgrade and update test cases. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47793 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-01 09:15:35 +00:00
Chris Lattner
ab3b77834c Fix PR2113 by verifying allocations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47792 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-01 09:01:57 +00:00
Chris Lattner
ad23d43f18 Fix this test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47791 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-01 09:00:21 +00:00
Tanya Lattner
9bc243b251 Remove llvm-upgrade and update tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47784 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-01 07:38:40 +00:00
Bill Wendling
65201f5a43 DCE'ed this testcase. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47760 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-29 19:28:11 +00:00
Bill Wendling
97e3c01eb4 If we reload a virtual register that's already been assigned, we want to mark 
that instruction as its "last use". This fixes PR1925.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47758 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-29 18:52:01 +00:00
Chris Lattner
9d34c4d678 fix a bug Anders ran into where scalarrepl would crash when promoting 
a union containing a vector and an array whose elements were smaller than
the vector elements.  this means we need to compile the load of the 
array elements into an extract element plus a truncate.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47752 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-29 07:12:06 +00:00
Chris Lattner
5ebd93630b Folding or(fcmp,fcmp) only works if the operands of the fcmps are the same fp type. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47750 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-29 06:09:11 +00:00
Lauro Ramos Venancio
9b80bd8ea2 Update testcase. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47735 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-28 23:13:15 +00:00
Gabor Greif
c0734e3c99 Fix http://llvm.org/bugs/show_bug.cgi?id=2104 by ordering lexicographically what gets printed. Be const-correct in PrintResults and uninline it too 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47712 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-28 08:38:45 +00:00
Evan Cheng
e526d8a955 Set to default: x86 no longer fold and into test if it has more than one use. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47711 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-28 07:46:38 +00:00
Dale Johannesen
0154e47ed0 New test for misaligned Altivec laod/store. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47698 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-27 23:14:50 +00:00
Dan Gohman
ec59b95a19 Don't hard-code the mask size to be 32, which is incorrect on ppc64 
and was causing aborts with the new APInt changes. This may also be
fixing an obscure ppc64 bug.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47692 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-27 21:12:32 +00:00
Evan Cheng
21b3f31f8f Fix a bug in dead spill slot elimination. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47687 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-27 19:57:11 +00:00
Chris Lattner
e416b7d407 actually run llc, thanks Dan :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47677 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-27 17:46:54 +00:00
Evan Cheng
be680dcea6 Don't track max alignment during stack object allocations since they can be deleted later. Let PEI compute it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47668 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-27 10:04:56 +00:00
Chris Lattner
b09916bdfb Make X86TargetLowering::LowerSINT_TO_FP return without creating a dead 
stack slot and store if the  SINT_TO_FP is actually legal.  This allows
us to compile:

double a(double b) {return (unsigned)b;}

to:

_a:
	cvttsd2siq	%xmm0, %rax
	movl	%eax, %eax
	cvtsi2sdq	%rax, %xmm0
	ret

instead of:

_a:
	subq	$8, %rsp
	cvttsd2siq	%xmm0, %rax
	movl	%eax, %eax
	cvtsi2sdq	%rax, %xmm0
	addq	$8, %rsp
	ret

crazy.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47660 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-27 05:57:41 +00:00
Chris Lattner
d0ba2a9c14 Compile x86-64-and-mask.ll into: 
_test:
	movl	%edi, %eax
	ret

instead of:

_test:
        movl    $4294967295, %ecx
        movq    %rdi, %rax
        andq    %rcx, %rax
        ret

It would be great to write this as a Pat pattern that used subregs 
instead of a 'pseudo' instruction, but I don't know how to do that
in td files.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47658 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-27 05:47:54 +00:00
Evan Cheng
d36531249a Spiller now remove unused spill slots. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47657 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-27 03:04:06 +00:00
Bill Wendling
cc4831849e Upgrade testcase. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47644 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 23:22:40 +00:00
Owen Anderson
bf931bb094 Add PR number to testcase. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47640 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 23:16:11 +00:00
Owen Anderson
77db50f68f Fix an issue where GVN had the sizes of the two memcpy's reverse, resulting 
in an invalid transformation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47639 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 23:06:17 +00:00
Evan Cheng
4d535cadf1 Enable -coalescer-commute-instrs by default. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47623 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 20:40:22 +00:00
Dan Gohman
d4cf992230 Avoid aborting on invalid shift counts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47612 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 18:50:50 +00:00
Eli Friedman
9ec8095485 Fix for pr2093: direct operands aren't necessarily addresses, so don't 
try to simplify them.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47610 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 18:37:49 +00:00
Chris Lattner
36ab30102a fix this test so that the fn name doesn't match the regex 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47608 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 18:13:51 +00:00
Chris Lattner
aeecb6c73a Fix PR2096, a regression introduced with my patch last night. This 
also fixes cfrac, flops, and 175.vpr


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47605 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 17:09:59 +00:00
Gabor Greif
72c8f0d156 Really feed llvm-as with the testcase, do not let it read from stdin. This fixes the hangs seen on solaris10. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47604 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 13:37:13 +00:00
Gabor Greif
1514010270 unbreak check-one 
by supplying a dummy
"verbose" procedure


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47603 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 13:27:49 +00:00
Gabor Greif
684ed3d987 While hunting for two hanging tests, 
(on solaris10, which are:
  CodeGen/PowerPC/frounds.ll
  Transforms/InstCombine/2008-02-23-MulSub.ll)

I needed a tool to figure out which one is the guilty.

To this end I have added a verbosity
option to the test/Makefile.

It can be invoked thus:

gmake check TESTSUITE=CodeGen/PowerPC VERBOSE="-v -v"

(The number of "-v"s specifies the verbosity level.
 Instead of "-v" other aliases can be specified,
 please consult the dejagnu docs for info.)

At level >= 2 following line is logged for each
test, before running it:

ABOUT TO RUN: <test>.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47602 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 12:08:55 +00:00
Evan Cheng
c886c460e4 This is possible: 
vr1 = extract_subreg vr2, 3
...
vr3 = extract_subreg vr1, 2
The end result is vr3 is equal to vr2 with subidx 2.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47592 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 08:03:41 +00:00
Chris Lattner
0254e7033a Fix isNegatibleForFree to not return true for ConstantFP nodes 
after legalize.  Just because a constant is legal (e.g. 0.0 in SSE) 
doesn't mean that its negated value is legal (-0.0).  We could make
this stronger by checking to see if the negated constant is actually
legal post negation, but it doesn't seem like a big deal.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47591 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 07:04:54 +00:00
Evan Cheng
9bf12b5583 Fix PR2076. CodeGenPrepare now sinks address computation for inline asm memory 
operands into inline asm block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47589 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 02:42:37 +00:00
Devang Patel
d9d99ff8e8 Update bitcode reader and writer to handle multiple return values. 
Take 2.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47583 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-26 01:29:32 +00:00
Owen Anderson
c0808a7e1d Fix an issue where GVN was performing the return slot optimization when it was 
not safe.  This is fixed by more aggressively checking that the return slot is
not used elsewhere in the function.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47544 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-25 04:08:09 +00:00
Evan Cheng
b9a905781e Temporarily reverting 46959. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47542 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-25 03:57:32 +00:00
Owen Anderson
0f7ea1ab10 Fix an issue where GVN would try to use an instruction before its definition when performing return slot optimization. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47541 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-25 00:40:41 +00:00
Evan Cheng
1df439773c Backing out r47521 for now. This has broken a number of tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47533 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-23 19:32:32 +00:00
Scott Michel
a59d469e9b Merge current work back to tree to minimize diffs and drift. Major highlights 
for CellSPU modifications:

- SPUInstrInfo.td refactoring: "multiclass" really is _your_ friend.
- Other improvements based on refactoring effort in SPUISelLowering.cpp,
  esp. in SPUISelLowering::PerformDAGCombine(), where zero amount shifts and
  rotates are now eliminiated, other scalar-to-vector-to-scalar silliness
  is also eliminated.
- 64-bit operations are being implemented, _muldi3.c gcc runtime now
  compiles and generates the right code. More work still needs to be done.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47532 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-23 18:41:37 +00:00
Zhou Sheng
f65a0f7860 Testcase for Revision 47478. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47531 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-23 10:59:51 +00:00
Evan Cheng
249ded3fa8 Rematerialization logic was overly conservative when it comes to loads from fixed stack slots. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47529 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-23 03:38:34 +00:00
Evan Cheng
aaa1d4265e Update test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47527 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-23 02:57:25 +00:00
Evan Cheng
18924f11c1 Remat of pic loads are now on by default. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47525 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-23 02:08:30 +00:00
Dan Gohman
61e015fe74 Fix a bug that caused opt and other tools to silently ignore 
invalid command-line options.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47523 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-23 01:55:25 +00:00
Devang Patel
e9fabd94ab Properly read and write bitcodes for multiple return values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47521 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-23 01:44:55 +00:00
Evan Cheng
28c9fc630c Really. Why doesn't every arch support MMX? 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47513 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-23 00:56:14 +00:00
Evan Cheng
530d47f4f2 Test case for PR2082. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47501 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-22 20:38:49 +00:00
Evan Cheng
d8850a512e Allow re-materialization of pic load (controlled by -remat-pic-load for now). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47476 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-22 09:25:47 +00:00
Chris Lattner
d2b1fb27df copy mmx values from/to memory with GPRs on x86-32 
instead of with mmx registers.  This horribleness is apparently
done by gcc to avoid having to insert emms in places that really 
should have it.  This is the second half of rdar://5741668.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47474 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-22 05:18:04 +00:00
Chris Lattner
149a4e56fc Start using GPR's to copy around mmx value instead of mmx regs. 
GCC apparently does this, and code depends on not having to do
emms when this happens.  This is x86-64 only so far, second half
should handle x86-32.

rdar://5741668


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47470 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-22 02:09:43 +00:00
Chris Lattner
0fe71e9bb1 Treat clobber operands like early clobbers: if we have 
any, we force sdisel to do all regalloc for an asm.  This
leads to gross but correct codegen.

This fixes the rest of PR2078.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47454 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-21 19:43:13 +00:00
Tanya Lattner
33eefffb2b Remove llvm-upgrade and update tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47432 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-21 07:42:26 +00:00
Chris Lattner
2bedd7359c testcase for PR1133 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47427 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-21 05:27:08 +00:00
Chris Lattner
7cbeb2431c Fix a (harmless) but where vregs were added to the used reg lists for 
inline asms.

Fix PR2078 by marking aliases of registers used when a register is 
marked used.  This prevents EAX from being allocated when AX is listed
in the clobber set for the asm.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47426 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-21 04:55:52 +00:00
Devang Patel
db71d63467 Let invoke return aggregate value. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47425 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-21 02:14:01 +00:00
Devang Patel
bb4f8d4045 Let function call return aggregate. 
Now, we have very first multiple return value testcase!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47424 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-21 01:54:02 +00:00
Devang Patel
ad9153ed25 XFAIL for now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47411 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-20 23:10:42 +00:00
Devang Patel
2102cab02f Now functions can return aggregate values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47409 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-20 22:51:28 +00:00
Nick Lewycky
3e63076980 Add 'umax' similar to 'smax' SCEV. Closes PR2003. 
Parse reversed smax and umax as smin and umin and express them with negative
or binary-not SCEVs (which are really just subtract under the hood).

Parse 'xor %x, -1' as (-1 - %x).

Remove dead code (ConstantInt::get always returns a ConstantInt).

Don't use getIntegerSCEV(-1, Ty). The first value is an int, then it gets
passed into a uint64_t. Instead, create the -1 directly from
ConstantInt::getAllOnesValue().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47360 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-20 06:48:22 +00:00
Evan Cheng
359026e39a XFAIL this for now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47355 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-20 02:38:58 +00:00
Chris Lattner
b476f98ca9 this test requires sse2 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47331 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-19 18:07:46 +00:00
Chris Lattner
ce2bcc8839 Don't fold and's into test instructions if they have multiple uses. 
This compiles test-nofold.ll into:

_test:
	movl	$15, %ecx
	andl	4(%esp), %ecx
	testl	%ecx, %ecx
	movl	$42, %eax
	cmove	%ecx, %eax
	ret

instead of:
_test:
	movl	4(%esp), %eax
	movl	%eax, %ecx
	andl	$15, %ecx
	testl	$15, %eax
	movl	$42, %eax
	cmove	%ecx, %eax
	ret



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47330 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-19 17:37:35 +00:00
Chris Lattner
22c31769fb rename tests to avoid a test- prefix when they aren't related to the test instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47329 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-19 17:33:52 +00:00
Tanya Lattner
cfab3da46e Remove llvm-upgrade and update tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47325 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-19 08:07:33 +00:00
Chris Lattner
1459c5d8e1 dead pass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47324 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-19 07:58:11 +00:00
Chris Lattner
689e8b294e Fix PR2060 by rejecting invalid types for integer constants. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47311 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-19 04:36:07 +00:00
Nick Lewycky
7ad3920e31 Don't spew stats to stderr. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47308 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-19 03:11:47 +00:00
Nick Lewycky
9103ba1003 Fix up the run line for this new test. 
llc: for the -info-output-file option:  requires a value!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47306 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-19 02:58:36 +00:00
Evan Cheng
acfab64631 New test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47302 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-19 02:09:58 +00:00
Tanya Lattner
2ad38be2cf Remove llvm-upgrade and update tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47297 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-19 01:44:26 +00:00
Tanya Lattner
53a66d10f0 Remove llvm-upgrade and update tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47296 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-19 01:41:04 +00:00
Evan Cheng
efec751a1b - When DAG combiner is folding a bit convert into a BUILD_VECTOR, it should check if it's essentially a SCALAR_TO_VECTOR. Avoid turning (v8i16) <10, u, u, u> to <10, 0, u, u, u, u, u, u>. Instead, simply convert it to a SCALAR_TO_VECTOR of the proper type. 
- X86 now normalize SCALAR_TO_VECTOR to (BIT_CONVERT (v4i32 SCALAR_TO_VECTOR)). Get rid of X86ISD::S2VEC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47290 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-18 23:04:32 +00:00
Nick Lewycky
e0cfecf47d Correctly fold divide-by-constant, even when faced with overflow. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47287 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-18 22:48:05 +00:00
Dan Gohman
339ffedca9 Don't mark scalar integer multiplication as Expand on x86, since x86 
has plain one-result scalar integer multiplication instructions.
This avoids expanding such instructions into MUL_LOHI sequences that
must be special-cased at isel time, and avoids the problem with that
code that provented memory operands from being folded.

This fixes PR1874, addressesing the most common case. The uncommon
cases of optimizing multiply-high operations will require work
in DAGCombiner.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47277 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-18 17:55:26 +00:00
Chris Lattner
ea0415957d make this just a bit more strict. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47274 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-18 17:33:10 +00:00
Owen Anderson
5aa4f2a085 Add support to GVN for performing sret return slot optimization. This means that, if an sret function tail calls 
another sret function, it should pass its own sret parameter to the tail callee, allowing it to fill in the correct
return value.  llvm-gcc does not emit this by default.  Instead, it allocates space in the caller for the sret of
the tail call and then uses memcpy to copy the result into the caller's sret parameter.  This optimization detects
and optimizes that case.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47265 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-18 09:24:53 +00:00
Chris Lattner
bf1d8a7099 optimize away stackrestore calls that have no intervening alloca or call. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47258 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-18 06:12:38 +00:00
Chris Lattner
28cb2051c8 upgrade this test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47257 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-18 06:11:00 +00:00
Chris Lattner
dd12f96c5e Fold (-x + -y) -> -(x+y) which promotes better association, fixing 
the second half of PR2047


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47244 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-17 21:03:36 +00:00
Chris Lattner
0b0803ae15 Split up subtracts into add+negate if they have a reassociable use or operand 
that is also a subtract.  This implements PR2047 and Transforms/Reassociate/subtest2.ll 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47241 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-17 20:51:26 +00:00
Chris Lattner
f06c3c29ac upgrade and simplify this test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47240 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-17 20:48:43 +00:00
Tanya Lattner
6263f94674 Remove llvm-upgrade. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47238 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-17 20:02:20 +00:00
Chris Lattner
5f137244c2 fix this test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47232 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-17 00:15:25 +00:00
Tanya Lattner
d349a4eda1 Remove llvm-upgrade 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47231 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-17 00:15:09 +00:00
Tanya Lattner
2d290f9dc4 Remove llvm-upgrade. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47230 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-17 00:13:09 +00:00
Chris Lattner
26fdb11e4e this test isn't useful since we added @ notation for globals. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47229 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-17 00:12:03 +00:00
Chris Lattner
8a39257fa5 this line was commented out. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47228 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-17 00:09:08 +00:00
Tanya Lattner
709f6ecd03 Remove llvm-upgrade and update tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47227 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-16 23:55:46 +00:00
Tanya Lattner
91974939d0 Removing llvm upgrade, so remove tests specific to llvm-upgrade and update the tests that used it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47225 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-16 23:27:24 +00:00
Duncan Sands
3d5378ff8e Remove any 'nest' parameter attributes if the function 
is not passed as an argument to a trampoline intrinsic.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47220 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-16 20:56:04 +00:00
Andrew Lenharth
22c5c1b2df llvm.memory.barrier, and impl for x86 and alpha 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47204 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-16 01:24:58 +00:00
Chris Lattner
d1bb1c2765 upgrade this test, which wasn't testing the right thing since llvm-upgrade came around. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47194 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-15 23:58:25 +00:00
Chris Lattner
01042345c8 rename llx -> ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47192 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-15 23:51:48 +00:00
Evan Cheng
de7f560744 This test is not interesting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47189 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-15 23:06:21 +00:00
Dale Johannesen
35e11cd70b Modify test to expect improved code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47182 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-15 22:05:15 +00:00
Duncan Sands
31fdedde04 Fix this test on linux, which returns S242 
using sret.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47173 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-15 19:42:13 +00:00
Devang Patel
9d9b204d6a Fix PR2028 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47150 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-15 01:24:49 +00:00
Devang Patel
9b03daa2a3 If loop header is also loop exiting block then OrigPN is incoming value for B loop header. 
Fixes PR 2030.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47141 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-14 23:18:47 +00:00
Chris Lattner
8c5c22f610 Fix PR2029 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47129 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-14 19:18:13 +00:00
Chris Lattner
423be627e6 Fix a miscompilation from Dan's recent apintification. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47128 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-14 18:48:56 +00:00
Tanya Lattner
6e9bceea97 Remove llvm-upgrade 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47119 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-14 07:57:12 +00:00
Nick Lewycky
c91b49b890 Testcase for PR2032. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47113 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-14 07:15:11 +00:00
Tanya Lattner
dcd188d33f Remove llvm-upgrade. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47110 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-14 06:56:27 +00:00
Chris Lattner
8b0cb7bcc6 This readme entry is done, testcase here: CodeGen/X86/zero-remat.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47106 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-14 05:39:46 +00:00
Evan Cheng
5598b70a78 Fix test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47102 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-14 01:32:53 +00:00
Devang Patel
ea06906559 A loop latch phi node may have uses inside loop, not just in loop header. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47093 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 22:23:07 +00:00
Devang Patel
23067dfeac While moving exit condition, do not drop loop latch on the floor. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47089 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 22:06:36 +00:00
Devang Patel
02c4836f3d Keep track of exit value operand number when operands are swapped. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47082 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 19:48:48 +00:00
Dale Johannesen
84ad8378ee New test, see comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47078 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 18:36:48 +00:00
Duncan Sands
d462ba8539 Teach LegalizeTypes how to expand and promote CTLZ, 
CTTZ and CTPOP.  The expansion code differs from
that in LegalizeDAG in that it chooses to take the
CTLZ/CTTZ count from the Hi/Lo part depending on
whether the Hi/Lo value is zero, not on whether
CTLZ/CTTZ of Hi/Lo returned 32 (or whatever the
width of the type is) for it.  I made this change
because the optimizers may well know that Hi/Lo
is zero and exploit it.  The promotion code for
CTTZ also differs from that in LegalizeDAG: it
uses an "or" to get the right result when the
original value is zero, rather than using a compare
and select.  This also means the value doesn't
need to be zero extended.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47075 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 18:01:53 +00:00
Eli Friedman
35327b3e57 Add a note pointing to PR1996. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47055 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 07:56:04 +00:00
Chris Lattner
86ca3cacc5 In SDISel, for targets that support FORMAL_ARGUMENTS nodes, lower this 
node as soon as we create it in SDISel.  Previously we would lower it in
legalize.  The problem with this is that it only exposes the argument
loads implied by FORMAL_ARGUMENTs after legalize, so that only dag combine 2
can hack on them.  This causes us to miss some optimizations because 
datatype expansion also happens here.

Exposing the loads early allows us to do optimizations on them.  For example
we now compile arg-cast.ll to:

_foo:
	movl	$2147483647, %eax
	andl	8(%esp), %eax
	ret

where we previously produced:

_foo:
	subl	$12, %esp
	movsd	16(%esp), %xmm0
	movsd	%xmm0, (%esp)
	movl	$2147483647, %eax
	andl	4(%esp), %eax
	addl	$12, %esp
	ret

It might also make sense to do this for ISD::CALL nodes, which have implicit
stores on many targets.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47054 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 07:39:09 +00:00
Eli Friedman
261c704da1 Add test for PR1996. (This is my first time adding a test for a 
transform, so please review.)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47050 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 06:55:57 +00:00
Nate Begeman
5e1dd5597e Add testcase for recent legalizer change 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47049 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 06:48:40 +00:00
Evan Cheng
b2e72b0feb New tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47047 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 03:23:53 +00:00
Owen Anderson
30b4bd4d10 Re-apply the patch to improve the optimizations of memcpy's, with several 
bugs fixed.  This now passes PPC bootstrap.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47026 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 21:15:18 +00:00
Evan Cheng
073c5b721d Don't mask the isel bug. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47018 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 19:11:29 +00:00
Evan Cheng
aeb231cb59 This test assumes no SSE4.1. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47017 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 19:11:08 +00:00
Wojciech Matyjewicz
52f321f525 Now that ScalarEvolution::print writes to the correct stream, there is 
no need to redirect stderr into stdout.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47009 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 15:12:40 +00:00
Wojciech Matyjewicz
2a9054cfd6 Change negative grep into positive one in my yesterday's testcase. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47008 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 15:10:35 +00:00
Wojciech Matyjewicz
7b5b76835a Fix PR2002. Suppose n is the initial value for the induction 
variable (with step 1) and m is its final value. Then, the correct trip 
count is SMAX(m,n)-n. Previously, we used SMAX(0,m-n), but m-n may 
overflow and can't in general be interpreted as signed.

Patch by Nick Lewycky.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47007 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 15:09:36 +00:00
Tanya Lattner
3c593c947c Test case for annotate builtin. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46999 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 07:46:33 +00:00
Evan Cheng
65b2e3df0d Fix some test cases. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46998 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 07:22:46 +00:00
Wojciech Matyjewicz
a089b10421 If the LHS of the comparison is a loop-invariant we also want to move it 
to the RHS. This simple change allows to compute loop iteration count 
for loops with condition similar to the one in the testcase (which seems 
to be quite common).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46959 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-11 18:37:34 +00:00
Wojciech Matyjewicz
e3320a1bcc Fix PR1798 - an error in the evaluation of SCEVAddRecExpr at an 
arbitrary iteration.

The patch:
1) changes SCEVSDivExpr into SCEVUDivExpr,
2) replaces PartialFact() function with BinomialCoefficient(); the 
computations (essentially, the division) in BinomialCoefficient() are 
performed with the apprioprate bitwidth necessary to avoid overflow; 
unsigned division is used instead of the signed one.

Computations in BinomialCoefficient() require support from the code 
generator for APInts. Currently, we use a hack rounding up the 
neccessary bitwidth to the nearest power of 2. The hack is easy to turn 
off in future.

One remaining issue: we assume the divisor of the binomial coefficient 
formula can be computed accurately using 16 bits. It means we can handle 
AddRecs of length up to 9. In future, we should use APInts to evaluate 
the divisor.

Thanks to Nicholas for cooperation!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46955 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-11 11:03:14 +00:00
Evan Cheng
431bfcbe37 Determine whether a spill kills the register it's spilling before insertion rather than trying to undo the kill marker afterwards. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46953 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-11 08:30:52 +00:00
Dan Gohman
6f0d024a53 Rename MRegisterInfo to TargetRegisterInfo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46930 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-10 18:45:23 +00:00
Dale Johannesen
b3c4eb46d6 Alignment of struct containing vectors depends on 
whether SSE is present, on Darwin anyway.  Make it
explicit.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46909 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-09 19:04:25 +00:00
Devang Patel
82ada54da0 Fix PR 1995. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46898 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-08 22:49:13 +00:00
Evan Cheng
5fd79d0560 It's not always safe to fold movsd into xorpd, etc. Check the alignment of the load address first to make sure it's 16 byte aligned. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46893 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-08 21:20:40 +00:00
Evan Cheng
33663fc104 Added missing entries in X86 load / store folding tables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46866 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-08 00:12:56 +00:00
Evan Cheng
be3bf42331 Fix a x86-64 codegen deficiency. Allow gv + offset when using rip addressing mode. 
Before:
_main:
        subq    $8, %rsp
        leaq    _X(%rip), %rax
        movsd   8(%rax), %xmm1
        movss   _X(%rip), %xmm0
        call    _t
        xorl    %ecx, %ecx
        movl    %ecx, %eax
        addq    $8, %rsp
        ret
Now:
_main:
        subq    $8, %rsp
        movsd   _X+8(%rip), %xmm1
        movss   _X(%rip), %xmm0
        call    _t
        xorl    %ecx, %ecx
        movl    %ecx, %eax
        addq    $8, %rsp
        ret

Notice there is another idiotic codegen issue that needs to be fixed asap:
xorl    %ecx, %ecx
movl    %ecx, %eax


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46850 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-07 08:53:49 +00:00
Evan Cheng
b745e88bf0 It's PR1925, not PR1609. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46825 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-06 22:07:17 +00:00
Bill Wendling
e00fec554b Temporarily reverting: 
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20080128/057882.html

This is causing a miscompilation on PPC G5 and just now seeing it on iMac x86-64.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46822 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-06 20:03:07 +00:00
Evan Cheng
2fc628d662 Fix a number of local register allocator issues: PR1609. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46821 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-06 19:16:53 +00:00
Evan Cheng
a58891ff1e Fix PR1975: dag isel emitter produces patterns that isel wrong flag result. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46776 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-05 22:50:29 +00:00
Evan Cheng
bb4151bd1f If a vr is already marked alive in a bb, then it has PHI uses that are visited earlier, then it is not killed in the def block (i.e. not dead). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46763 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-05 20:04:18 +00:00
Chris Lattner
7c95debb49 Fix a bug compiling PR1978 (perhaps not the only one though) which 
was incorrectly simplifying "x == (gep x, 1, i)" into false, even 
though i could be negative.  As it turns out, all the code to 
handle this already existed, we just need to disable the incorrect
optimization case and let the general case handle it.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46739 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-05 04:45:32 +00:00
Evan Cheng
e4908814d2 This should also work on x86 now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46730 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-05 00:25:31 +00:00
Duncan Sands
6cc24947b6 Crashes LegalizeTypes with "Do not know how to 
expand the result of this operator!" (node: ctlz).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46713 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-04 18:07:02 +00:00
Duncan Sands
06418c5610 Crashes LegalizeTypes with "Do not know how to split 
this operator's operand" (node: extract_subvector).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46712 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-04 18:05:42 +00:00
Chris Lattner
003de9a81e remove target triple to make this test more "generic" 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46711 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-04 18:02:37 +00:00
Duncan Sands
df3fb5ef97 Crashed the new type legalizer. Not likely to catch 
any bugs in the future since to get the crash you also
need hacked in fake libcall support (which creates odd
but legal trees), but since adding it doesn't hurt...
Thanks to Chris for this ultimately reduced version.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46706 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-04 09:40:27 +00:00
Owen Anderson
d02c0bc984 Make this test more aggressive, to cover recent improvements. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46695 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-04 04:55:24 +00:00
Owen Anderson
6f7a52d300 Allow GVN to hack on memcpy's, making them open to further optimization. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46693 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-04 02:59:58 +00:00
Nick Lewycky
f2a5f012f3 Tag this test with the PR reference. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46688 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-03 16:35:19 +00:00