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Author SHA1 Message Date
Chris Lattner
071aade5f0 Document and fix Constant::getVectorElements to return an empty vector 
when presented with a constant expr.

If ConstantExpr::getV[IF]Cmp to work when ConstantFoldCompareInstruction
returns an undef or constant expr.  



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53541 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-14 05:10:41 +00:00
Chris Lattner
ac77bfdbd4 If a function calls setjmp, never inline it into other functions. This is 
a hack around the fact that we don't represent the CFG correctly for sj/lj.
It fixes PR2486.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53540 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-14 00:46:56 +00:00
Chris Lattner
4238453135 simplify some code, shuffle and insertelt always return a vector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53538 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-14 00:32:20 +00:00
Chris Lattner
de29d92420 whitespace fix. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53537 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-14 00:28:45 +00:00
Chris Lattner
6838d8726e doxygenate comments and wrap to 80 cols. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53536 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-14 00:27:31 +00:00
Chris Lattner
10c5d36ca9 Add a note. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53535 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-14 00:19:59 +00:00
Chris Lattner
fdb19e5887 Fix PR2506 by being a bit more careful about reverse fact propagation when 
disproving a condition.  This actually compiles the existing testcase
(udiv_select_to_select_shift) to:

define i64 @test(i64 %X, i1 %Cond) {
entry:
	%divisor1.t = lshr i64 %X, 3		; <i64> [#uses=1]
	%quotient2 = lshr i64 %X, 3		; <i64> [#uses=1]
	%sum = add i64 %divisor1.t, %quotient2		; <i64> [#uses=1]
	ret i64 %sum
}

instead of:

define i64 @test(i64 %X, i1 %Cond) {
entry:
	%quotient1.v = select i1 %Cond, i64 3, i64 4		; <i64> [#uses=1]
	%quotient1 = lshr i64 %X, %quotient1.v		; <i64> [#uses=1]
	%quotient2 = lshr i64 %X, 3		; <i64> [#uses=1]
	%sum = add i64 %quotient1, %quotient2		; <i64> [#uses=1]
	ret i64 %sum
}



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53534 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-14 00:15:52 +00:00
Chris Lattner
093a438502 Fix mishandling of the infinite loop case when merging two blocks. This 
fixes PR2540.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53533 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-13 22:23:11 +00:00
Chris Lattner
b824512b8d more refactoring. Use early exits instead of really complex logic. 
No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53532 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-13 22:04:41 +00:00
Chris Lattner
eb388af89f improve comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53531 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-13 21:55:46 +00:00
Chris Lattner
867661ac8b factor another large hunk of code out into its own function. 
No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53530 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-13 21:53:26 +00:00
Chris Lattner
4f60e4de90 add a description. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53529 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-13 21:27:36 +00:00
Chris Lattner
3698909623 Final bit of simplification for FoldBranchToCommonDest. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53528 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-13 21:20:19 +00:00
Chris Lattner
70087f31f1 simplify logic a bit 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53527 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-13 21:15:11 +00:00
Chris Lattner
1347e87c7b Refactor some code out into its own helper function, getting rid of crazy multiline 
conditionals and commenting the code better.

No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53526 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-13 21:12:01 +00:00
Duncan Sands
56eb133095 Fix comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53525 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-13 20:14:38 +00:00
Chris Lattner
3dda08ad5d Fix PR2231 - opt -internalize -std-compile-opts should run internalize first 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53523 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-13 19:35:21 +00:00
Cedric Venet
9322fe02dd Remove deleted files from VC++ project. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53521 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-13 11:12:36 +00:00
Ted Kremenek
a052246590 Inline typedef for alist_iterator::pointer to work with MSVC++. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53517 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-12 18:28:46 +00:00
Nick Lewycky
59cff12f88 Stop creating extraneous smax/umax in SCEV. This removes a regression where we 
started complicating many loops ('for' loops, in fact).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53508 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-12 07:41:32 +00:00
Nick Lewycky
066075030a operator[] is not defined for list::iterator. Overload it in ilist::iterator 
to prevent silly things from happening accidentally. PR2171


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53507 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-12 07:00:52 +00:00
Nick Lewycky
3ac9e109b2 Enhance analysis of srem. 
Remove dead code analyzing urem. 'urem' of power-of-2 is canonicalized to an
'and' instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53506 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-12 05:04:38 +00:00
Evan Cheng
5330192ab5 Implement llvm.atomic.cmp.swap.i32 on PPC. Patch by Gary Benson! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53505 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-12 02:23:19 +00:00
Evan Cheng
b9890ae3c3 Typos. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53504 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-12 02:22:07 +00:00
Evan Cheng
79a796c2b1 Fix PR2536: a nasty spiller bug. If a two-address instruction uses a register but the use portion of its live range is not part of its liveinterval, it must be defined by an implicit_def. In that case, do not spill the use. e.g. 
8   %reg1024<def> = IMPLICIT_DEF
12  %reg1024<def> = INSERT_SUBREG %reg1024<kill>, %reg1025, 2

The live range [12, 14) are not part of the r1024 live interval since it's defined by an implicit def. It will not conflicts with live interval of r1025. Now suppose both registers are spilled, you can easily see a situation where both registers are reloaded before the INSERT_SUBREG and both target registers that would overlap.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53503 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-12 01:56:02 +00:00
Evan Cheng
b5eec33dcd Back out 53476 and 53480 for now. Somehow they cause llc to miscompile 179.art. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53502 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-12 01:38:51 +00:00
Dan Gohman
cddc11e757 Add a utility function to MachineInstr for testing whether an instruction 
has exactly one MachineMemOperand, and change some X86 lowering code to
make use of it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53498 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-12 00:10:52 +00:00
Dan Gohman
e6acf36dca Fix spelling of "hierarchy" in comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53489 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 22:51:32 +00:00
Dan Gohman
e4f1a7e8ff Fix typos in comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53487 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 22:48:20 +00:00
Dan Gohman
a54cf17661 Include a frame index in the "fixed stack" pseudo source value 
instead of using the frame index for the SVOffset, which was
inconsistent.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53486 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 22:44:52 +00:00
Ted Kremenek
eca64f0980 Minor tweaks to the ImmutableList iterator interface. 
Added partial specialization of DenseMapInfo<T> for ImmutableList.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53485 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 22:43:07 +00:00
Bill Wendling
499d7cf188 Porting r53478 into mainline: 
Update to build_llvm. Don't output a floating point number for the version.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53484 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 22:42:10 +00:00
Dan Gohman
5e76c3be73 Fix an obsolete top-level comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53481 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 22:39:58 +00:00
Dan Gohman
0f4012f475 Factor out debugging code into the common base class. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53480 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 22:36:22 +00:00
Dan Gohman
dbe2a5a269 Add support for putting NamedRegionTimers in TimerGroups, and 
use a timer group for the timers in SelectionDAGISel. Also,
Split scheduling out from emitting, to give each their own
timer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53476 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 21:54:34 +00:00
Dan Gohman
c418bf3dd5 Use find instead of lower_bound. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53474 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 20:58:19 +00:00
Chris Lattner
78d60458d5 add support for returning i128, PR2532. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53472 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 20:53:00 +00:00
Dan Gohman
dc2fbddd9d Trim unnecessary #includes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53471 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 20:38:31 +00:00
Owen Anderson
c45996bf74 Don't call lookupNumber more than we have to. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53470 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 20:05:13 +00:00
Duncan Sands
92e0834ac7 Remove an apparently useless routine: there should 
be no need to split the result of a vector RET node,
since they are always already legal.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53462 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 17:02:09 +00:00
Duncan Sands
ac6cecec18 It is pointless to turn a UINT_TO_FP into an 
SINT_TO_FP libcall plus additional operations:
it might as well be a direct UINT_TO_FP libcall.
So only turn it into an SINT_TO_FP if the target
has special handling for SINT_TO_FP.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53461 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 17:00:14 +00:00
Duncan Sands
9bed0f58eb Add two missing SINT_TO_FP libcalls. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53460 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 16:57:02 +00:00
Duncan Sands
edfba7e707 Port a shift-by-1 optimization from LegalizeDAG: it 
was presumably added after the rest of the code was
copied to LegalizeTypes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53459 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 16:54:57 +00:00
Duncan Sands
dddc6291fb Add support for 128 bit shifts and 32 bit shifts 
on 16 bit machines.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53458 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 16:52:29 +00:00
Nick Lewycky
7d9843fc37 Document 'mask' in this calculation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53454 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 08:16:26 +00:00
Duncan Sands
569d8f7087 Align comments, colons and cases. Remove trailing 
whitespace.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53453 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 07:37:30 +00:00
Nick Lewycky
1f26c188f8 Remove misleading constant from comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53452 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 07:36:19 +00:00
Nick Lewycky
4bf1e59819 Add another optimization from PR2330. Also catch some missing cases that are 
similar.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53451 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 07:20:53 +00:00
Bill Wendling
71ca353ae6 The frame address on an x86-64 box needs to be offset by -8, not -4. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53450 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 07:18:52 +00:00
Chris Lattner
d01bee7170 a missed optimization that Eli spotted 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53449 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-07-11 06:40:29 +00:00