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23240 Commits

Author SHA1 Message Date
Gabor Greif
de2d74b213 Rewrite operand loops to use iterators. This shrinks .o file (at gcc4.0.1 -O3 x86) substantially (>500 bytes). Reason still unknown. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51423 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-22 06:43:33 +00:00
Chris Lattner
687a4cb295 fix an off-by-one error in my previous patch, don't treat the callee as a incoming arg. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51422 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-22 06:29:38 +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
ea21ad4926 Fix PR2267, by allowing indirect outputs to be intermixed 
with normal outputs.  Testcase here: 
test/CodeGen/X86/asm-indirect-mem.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51409 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-22 04:46:38 +00:00
Chris Lattner
05a24e5efe Free and vaarg are not really volatile. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51407 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-22 03:23:06 +00:00
Chris Lattner
19d9d4364e rewrite the validity checking for memory promotion to be simpler, 
more aggressive, and more correct.  Verify that we only attempt to
promote loads and stores.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51406 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-22 03:22:42 +00:00
Chris Lattner
29d929363d Use 'continue' to reduce nesting in this loop. No functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51399 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-22 00:53:38 +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
Bill Wendling
40db5d4539 Follow-up to the reverting of r51218. This puts the checks out-of-line. Because 
they aren't in the header file, systems with a <string> header file that isn't
64-bit clean shouldn't warn if #including Path.h and specifying
-Wshorten-64-to-32.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51393 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-21 21:20:07 +00:00
Nate Begeman
f049e07eb8 Fix a couple issues with the JIT and multiple modules: 
1. The "JITState" object creates a PassManager with the ModuleProvider that the
   jit is created with.  If the ModuleProvider is removed and deleted, the
   PassManager is invalid.

2. The Global maps in the JIT were not invalidated with a ModuleProvider was 
   removed.  This could lead to a case where the Module would be freed, and a 
   new Module with Globals at the same addresses could return invalid results.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51384 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-21 16:34:48 +00:00
Gabor Greif
33e456d5f3 suppress gcc3.4.6's <no value returned> warnings 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51372 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-21 14:07:30 +00:00
Dan Gohman
010ee2d955 When LSR is replacing an instruction, call 
ScalarEvolution::deleteValueFromRecords on it before doing the
replaceAllUsesWith, because ScalarEvolution looks at the instruction's
users to find SCEV references to the instruction's SCEV object in its
internal maps.

Move all of LSR's loop-related state clearing after processing the loop
and before cleaning up dead PHI nodes. This eliminates all of LSR's SCEV
references just before the calls to ScalarEvolution::deleteValueFromRecords
so that when ScalarEvolution drops its own SCEV references, the reference
counts will reach zero and the SCEVs will be deleted immediately.

These changes fix some compiler aborts involving ScalarEvolution holding
onto and reusing SCEV objects for instructions that have been deleted.
No regression test unfortunately; because the symptoms were due to
dangling pointers, reduced testcases ended up being fairly arbitrary.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51359 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-21 00:54:12 +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
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
Dan Gohman
c84941be0a Port the fix for the select operator from instcombine's 
ComputeNumSignBits to SelectionDAG's ComputeNumSignBits.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51348 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-20 20:59:51 +00:00
Dan Gohman
1fdfa6aabf Code simplification. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51345 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-20 20:56:33 +00:00
Evan Cheng
8e8de684c7 movsd and movq do not require 16-byte alignment. This fixes vec_set-5.ll on Linux. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51327 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-20 18:24:47 +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
Matthijs Kooijman
6e7b322d36 Fix typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51303 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-20 07:26:45 +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
Chris Lattner
851627892d fix two issues Neil noticed, thanks! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51296 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-20 03:50:52 +00:00
Chris Lattner
28a8dbc35f Add a bool to isEdgeFeasible that tells it whether to treat unknown 
value as undef or untracked.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51295 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-20 03:39:39 +00:00
Dan Gohman
638e378f2c Fix ExecutionEngine's constant code to work properly when structs and arrays 
will become first-class types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51293 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-20 03:20:09 +00:00
Dan Gohman
ca756ae886 Refine the fix in r51169 to only apply when the operand val being 
replaced is a PHI. This prevents it from inserting uses before defs
in the case that it isn't a PHI and it depends on other instructions
later in the block. This fixes the 447.dealII regression on x86-64.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51292 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-20 03:01:48 +00:00
Evan Cheng
a125e62117 runOnMachineFunction should set IsPIC because relocation model may have been changed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51291 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-20 01:56:59 +00:00
Dan Gohman
76d402beb9 Make AssociativeOpt static. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51290 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-20 01:14:05 +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
Dan Gohman
45b4e48b18 Add a ComputeNumSignBits function for use by instcombine, based on the 
code in SelectionDAG.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51279 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-19 22:14:15 +00:00
Dale Johannesen
c215b3ef5d Handle quoted names when constructing $stub's, 
$non_lazy_ptr's and $lazy_ptr's.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51277 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-19 21:38:18 +00:00
Chris Lattner
7be1c454c9 switch to Type::getFPMantissaWidth instead of reinventing it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51275 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-19 21:17:23 +00:00
Chris Lattner
0a2d74bd53 minor cleanups, teach instcombine that sitofp/uitofp cannot 
produce a negative zero.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51272 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-19 20:27:56 +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
9d60ba9d28 remove debug output 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51264 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-19 20:03:53 +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
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
Gordon Henriksen
e46924bdf7 Reverting accidental commit of generated files. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51239 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-19 05:57:12 +00:00
Gordon Henriksen
83eaae19ad Remove a duplicative binding. Patch by Mahadevan R. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51238 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-19 05:47:10 +00:00
Nate Begeman
1d6e4091f6 Teach GVN to not assert on vector comparisons 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51230 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-18 19:49:05 +00:00
Nate Begeman
f44085a86a Fix a backwards check in the JIT symbol table code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51229 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-18 19:09:10 +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
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
Chris Lattner
b5783106c4 trip count computation deficiency 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51222 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-17 15:37:38 +00:00
Nick Lewycky
6cccce3e58 Unbreak the build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51217 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-17 09:05:22 +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
Nick Lewycky
fc1efbbfbc Move isTrueWhenEqual to ICmpInst. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51215 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-17 07:33:39 +00:00
Dale Johannesen
1f7580c5eb Less conservative verison of previous patch, 
suggested by Duncan.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51211 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-16 23:18:52 +00:00
Dale Johannesen
6796629611 Weak functions not declared non-throwing might be 
replaced at linktime with a body that throws, even
if the body in this file does not.  Make PruneEH
be more conservative in this case.
g++.dg/eh/weak1.C



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51207 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-16 21:31:48 +00:00
Eric Christopher
0bf7b414ae Add functions to enable adding a single attribute to a function and 
its associated call site.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51204 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-16 20:39:43 +00:00
Dale Johannesen
ea7dd40714 Record weak external linkage in a case where we were 
missing it. gcc.dg/darwin-weakimport-2.c.
Handle common and weak differently for darwin ppc32.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51201 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-16 20:09:25 +00:00
Gabor Greif
7cbd8a3e92 API change for {BinaryOperator|CmpInst|CastInst}::create*() --> Create. Legacy interfaces will be in place for some time. (Merge from use-diet branch.) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51200 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-16 19:29:10 +00:00
Evan Cheng
446efddfcd If the result of a BIT_CONVERT is a v1* vector, it doesn't mean its source is a v1* vector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51192 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-16 17:19:05 +00:00
Duncan Sands
1a2d667d6f Bill pointed out that system headers should be 
included after local headers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51187 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-16 09:30:00 +00:00
Duncan Sands
419cafb9fb Silence the compiler warning differently. The 
original method caused gcc-4.2 to complain.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51186 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-16 09:19:16 +00:00
Evan Cheng
66ae104cd1 Do not dup malloc, vector instructions, etc. Throttle the default theshold way down. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51183 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-16 07:55:50 +00:00
Owen Anderson
62849be80d Remove ADCE's ability to delete loops. This ability is now implemented in a 
safer manner by loop deletion.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51182 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-16 04:34:51 +00:00
Owen Anderson
0db198d758 Clean ups for loop deletion based on Chris' feedback. 
Also, use SCEV to determine the trip count of the loop, which is more powerful
and accurate that Loop::getTripCount.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51179 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-16 04:32:45 +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
f88c81e332 Treat common as distinct from weak global on Darwin x86. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51172 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-16 00:52:06 +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
Evan Cheng
0ef8de30fa Fix typos and comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51165 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-15 22:13:02 +00:00
Dale Johannesen
6667646a56 Allow an extra bit for CommonLinkage. 
This changes the .bc file format, but if I understand
how it works correctly, old .bc files continue to
be readable.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51161 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-15 20:49:28 +00:00
Nate Begeman
b434513a20 Actually scalarize the operand to BIT_CONVERT instead of asking someone to do 
something with a v1 type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51160 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-15 20:40:58 +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
Dan Gohman
d208a803a6 Use static and anonymous namespaces consistently with other passes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51156 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-15 19:43:55 +00:00
Devang Patel
8dbd9ada30 Remove useless check. 
Patch by Matthijs Kooijman.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51154 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-15 18:04:29 +00:00
Evan Cheng
bdb6ca178c Disable JIT symbol table for now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51152 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-15 17:31:35 +00:00
Duncan Sands
9c0d50ecae Use of UINT_MAX requires climits, at least when 
compiling with gcc 4.3.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51145 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-15 11:22:50 +00:00
Gabor Greif
b1dbcd886a Fix a bunch of 80col violations that arose from the Create API change. Tweak makefile targets to find these better. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51143 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-15 10:04:30 +00:00
Evan Cheng
f0df03134e Make use of vector load and store operations to implement memcpy, memmove, and memset. Currently only X86 target is taking advantage of these. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51140 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-15 08:39:06 +00:00
Nate Begeman
ff155f03bd Move the operator new and operator delete out of line. This fixes an issue with 
operator new() referring to the static initTags function, which has to be in the 
same linkage unit as any file including User.h.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51136 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-15 01:23:11 +00:00
Dale Johannesen
386f3e9d50 Don't assume underlying APInt type is limited 
to 64 bits.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51135 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 22:53:25 +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
Dale Johannesen
6a33cc12eb Remove undefined behavior in hex string->APFloat 
conversion.  Try 0x1.0000a4p+0f.  Neil, please review.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51132 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 22:05:31 +00:00
Evan Cheng
97e60d9e8c Use a better idiom to silence compiler warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51131 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 21:08:07 +00:00
Chris Lattner
4186ad56cf rename SimplifyCFG.cpp -> SimplifyCFGPass.cpp 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51130 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 20:38:44 +00:00
Evan Cheng
bb60674191 Silence warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51129 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 20:33:21 +00:00
Evan Cheng
3521334467 Really silence compiler warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51126 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 20:29:30 +00:00
Evan Cheng
b2031145e3 Really silence compiler warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51123 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 20:26:35 +00:00
Dale Johannesen
40e829fadb CommonLinkage (missed a file) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51120 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 20:14:09 +00:00
Dale Johannesen
c7071cc57b Generated files for CommonLinkage. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51119 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 20:13:36 +00:00
Dale Johannesen
aafce77b17 Add CommonLinkage; currently tentative definitions 
are represented as "weak", but there are subtle differences
in some cases on Darwin, so we need both.  The intent
is that "common" will behave identically to "weak" unless
somebody changes their target to do something else.
No functional change as yet.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51118 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 20:12:51 +00:00
Evan Cheng
5087124721 Silence some compiler warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51115 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 20:07:51 +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
Sanjiv Gupta
2010b3eea6 Detabification. Fixed indentation and spacing. 
Changed cout to DOUT, and TODOs to FIXMEs.
Other changes as per coding conventions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51105 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 11:31:39 +00:00
Nicolas Geoffray
9474ede38b Fix typo in ParameterAttribute fields usage. Add an include 
to make the Cpp backend output compilable.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51095 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 07:52:03 +00:00
Sanjiv Gupta
2d4e7f732a Fixed the file description header at the top to remove the developer name. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51094 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 06:50:01 +00:00
Evan Cheng
6bf877035e Doh. Alignment is in bytes, not in bits. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51092 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 02:49:43 +00:00
Dan Gohman
c9f5f3f64f Change target-specific classes to use more precise static types. 
This eliminates the need for several awkward casts, including
the last dynamic_cast under lib/Target.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51091 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 01:58:56 +00:00
Dan Gohman
9c78a39907 Whitespace cleanups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51089 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 00:43:10 +00:00
Dan Gohman
4d9dd6beae Make PreVerifyID, IntSigsEnd, and KillSigsEnd const. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51088 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 00:42:30 +00:00
Dan Gohman
45b3197090 Split the loop unroll mechanism logic out into a utility function. 
Patch by Matthijs Kooijman!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51083 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-14 00:24:14 +00:00
Owen Anderson
c4f406e736 Fix Analysis/BasicAA/pure-const-dce.ll. This turned out to be a correctness 
bug as well as a missed optimization.  We weren't properly checking for local
dependencies before moving on to non-local ones when doing non-local read-only 
call CSE.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51082 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 23:18:30 +00:00
Gabor Greif
94fb68ba21 Merge of r51073-51074 from use-diet branch. 
Do not rely on std::swap<Use>, provide a (faster) member function instead.
This change is primarily necessitated by MSVC++'s incompatibility with
declaring std::swap<Use> to be a friend of Use.

Also contains some minor tweaks to Use inline functions,
to undo pointless changes that sneaked in with the last merge.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51078 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 22:51:52 +00:00
Devang Patel
2527e88416 Dominance Frontier is cfg only pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51075 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 22:43:21 +00:00
Owen Anderson
ff5a535378 Fix memdep's handling of invokes when finding the dependency of another call 
instruction.  This fixes some Ada miscompiles reported in PR2324.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51069 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 21:25:37 +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
Chris Lattner
3b34e1e9e8 add a note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51062 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 19:56:20 +00:00
Evan Cheng
b656443366 - Fix the pasto in the fix for a previous pasto. 
- Incorporate Chris' comment suggestion.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51061 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 18:59:59 +00:00
Chris Lattner
7171c836a9 add a note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51060 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 18:48:54 +00:00
Nate Begeman
32097bdbf6 Fix one more encoding bug. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51057 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 17:52:09 +00:00
Evan Cheng
11b6793ede - Don't treat anyext 16-bit load as a 32-bit load if it's volatile. 
- Correct a pasto.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51054 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 16:45:56 +00:00
Owen Anderson
16db1f70b7 Make the non-local CSE safety checks slightly more thorough. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51035 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 13:41:23 +00:00
Sanjiv Gupta
0e68771536 Adding files for Microchip's PIC16 target. 
A brief description about PIC16:
===============================
PIC16 is an 8-bit microcontroller with only one 8-bit register which is the 
accumulator. All arithmetic/load/store operations are 8-bit only.
The architecture has two address spaces: program and data. The program memory 
is divided into 2K pages and the data memory is divided into banks of 128 byte, with only 80 usable bytes, resulting in an non-contiguous data memory. 

It supports direct data memory access (by specifying the address as part of the instruction) and indirect data and program memory access (in an unorthodox fashion which utilize a 16 bit pointer register). 

Two classes of registers exist: (8-bit class which is only one
accumulator) (16-bit class, which contains one or more 16 bit
pointer(s))



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51027 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 09:02:57 +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
3b3f58cb77 Add support for non-local CSE of read-only calls. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51024 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 08:17:22 +00:00
Gabor Greif
d6a2218586 Derive GetResultInst from UnaryInstruction, this simplifies code and removes a FIXME. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51023 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 07:09:08 +00:00
Dan Gohman
6ddba2b933 Change class' public PassInfo variables to by initialized with the 
address of the PassInfo directly instead of calling getPassInfo.
This eliminates a bunch of dynamic initializations of static data.

Also, fold RegisterPassBase into PassInfo, make a bunch of its
data members const, and rearrange some code to initialize data
members in constructors instead of using setter member functions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51022 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 02:05:11 +00:00
Nate Begeman
a72acf9389 80 col / tabs fixes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51021 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 01:48:26 +00:00
Nate Begeman
c9bdb00683 Fix and encoding error in the psrad xmm, imm8 instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51020 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 01:47:52 +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
Dan Gohman
844731a7f1 Clean up the use of static and anonymous namespaces. This turned up 
several things that were neither in an anonymous namespace nor static
but not intended to be global.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51017 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-13 00:00:25 +00:00
Nate Begeman
0d1704b955 Teach Legalize how to scalarize VSETCC 
Teach X86 a few more vsetcc patterns.  Custom lowering for unsupported ones is next.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51009 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 23:09:43 +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
30562b7d44 Be more aggressive about tail-merging small blocks 
if those blocks consist entirely of common instructions;
merging will not add an extra branch in this case.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51006 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 22:53:12 +00:00
Bill Wendling
ae94dda61a Constify isSourceDefinedByImplicitDef function. Otherwise, just formatting 
changes that don't change functionality.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51004 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 22:15:05 +00:00
Bill Wendling
9f8fea3531 Constify the machine instruction passed into the 
"is{Trivially,Really}ReMaterializable" methods.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51001 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 20:54:26 +00:00
Nate Begeman
c2616e43fd Initial X86 codegen support for VSETCC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51000 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 20:34:32 +00:00
Dale Johannesen
51b2b9e29e Further rework of tail merge algorithm. Not quite 
semantically identical, but little difference in
either results or execution speed; but it's much
easier to read, at least IMO.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50999 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 20:33:57 +00:00
Nate Begeman
baa64ebd26 Simplify some checks 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50998 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 20:33:52 +00:00
Dan Gohman
9499b7186b Fix a copy+paste bug; pseudo-instructions shouldn't have 
encoding information.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50997 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 20:22:45 +00:00
Nate Begeman
51d2ed179b Pointer comparisons should use icmp, not vicmp 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50996 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 20:16:55 +00:00
Owen Anderson
a472c4a280 Go back to passing the analyses around as parameters. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50995 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 20:15:55 +00:00
Nate Begeman
c83ad0d8e7 Pointer comparisons should be handled by icmp, not vicmp :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50994 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 20:11:05 +00:00
Nate Begeman
18e4e8500f Hard code CmpInst back to i1 for now while I go track down what in the bitcode reader/writer is assuming i1 
This was breaking a bunch of tests


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50992 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 20:01:56 +00:00
Evan Cheng
ad4196b44a Refactor isConsecutiveLoad from X86 to TargetLowering so DAG combiner can make use of it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50991 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 19:56:52 +00:00
Bill Wendling
c1b7f52fbe Revert the previous commit. Go ahead and hoist rematerializable instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50990 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 19:47:18 +00:00
Nate Begeman
b43e9c1965 Add support for vicmp/vfcmp codegen, more legalize support coming. 
This is necessary to unbreak the build.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50988 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 19:40:03 +00:00
Bill Wendling
e4fc1ccd4d One real change - don't hoist something that's trivially rematerializable. It's 
possible for it to produce worse code than before.

The rest of this patch is code cleanup.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50987 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 19:38:32 +00:00
Nate Begeman
6fd90ce2ee Fix build breakage 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50986 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 19:23:22 +00:00
Nate Begeman
ac80ade158 Add two new instructions to the llvm IR, vicmp and vfcmp. see updated LangRef 
for details.  CodeGen support coming in a follow up patch


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50985 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 19:01:56 +00:00
Dan Gohman
7c2e4f2fc5 Make firstEightPowers const. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50975 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 16:38:14 +00:00
Dan Gohman
9b38d7db6d Update comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50974 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 16:34:30 +00:00
Dan Gohman
2ce3898e41 Fix a compile error on compilers that still want a return value 
in a non-void function that calls abort.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50969 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 16:17:19 +00:00
Dan Gohman
9ab9ee8209 Fix a missing break in the ISD::FLT_ROUNDS_ handling. Patch by giuma! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50967 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 16:07:15 +00:00
Owen Anderson
7b45e33107 Move the various analyses used by GVN into static variables so we don't have to keep passing them around or refetching them. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50963 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 08:15:27 +00:00
Chris Lattner
4651f3de34 prune #includes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50962 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 01:13:53 +00:00
Chris Lattner
ab7d9ccf18 Add a new SparsePropagation analysis utility, which allows you to do 
SCCP like sparse lattice analysis with relative ease.  Just pick your
lattice function and implement the transfer function and you're good.
Just make sure you don't break monotonicity ;-)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50961 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-12 01:12:24 +00:00
Nick Lewycky
fff116fd58 Make constructors target-specific. This fixes problems where the path would 
include backslashes on Windows. This should fix llvm-ld problems on win32.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50960 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-11 17:37:40 +00:00
Anton Korobeynikov
64d69102a1 Add note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50959 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-11 14:33:15 +00:00
Chris Lattner
5c8e8d7fc5 Fix various DOUTs to not call the extremely expensive Value::getName() 
method.  DOUT statements are disabled when assertions are off, but the
side effects of getName() are still evaluated.  Just call getNameSTart,
which is close enough and doesn't cause heap traffic.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50958 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-11 01:55:59 +00:00
Chris Lattner
3a73c9e5f9 Simplify code by using SwitchInst::findCaseValue instead of reimplementing it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50957 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-10 23:56:54 +00:00
Anton Korobeynikov
caa8ae8125 Fix linking of internal aliases 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50950 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-10 14:41:43 +00:00
Gabor Greif
efe65369a7 merge of use-diet branch to trunk 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50943 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-10 08:32:32 +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
Dan Gohman
9018e836fe For now, abort when an ISD::VAARG is encountered on x86-64, rather 
than silently generate invalid code.

llvm-gcc does not currently use VAArgInst; it lowers va_arg in the
front-end.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50930 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-10 01:26:14 +00:00
Evan Cheng
b70ea0bd03 Some clean up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50929 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-10 00:59:18 +00:00