Duncan Sands 4b720718fb Reenable the transform "(X*Y)/Y->X" when the multiplication is known not to ...

overflow (nsw flag), which was disabled because it breaks 254.gap.  I have
informed the GAP authors of the mistake in their code, and arranged for the
testsuite to use -fwrapv when compiling this benchmark.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124746 91177308-0d34-0410-b5e6-96231b3b80d8

2011-02-02 20:52:00 +00:00

..

ADCE

…

ArgumentPromotion

fix PR8932, a case where arg promotion could infinitely promote.

2011-01-16 08:09:24 +00:00

BlockPlacement

…

BranchFolding

…

CodeExtractor

…

CodeGenPrepare

temporarily revert r123526. While working on a follow-on patch I

2011-01-15 07:51:19 +00:00

ConstantMerge

Don't merge two constants if we care about the address of both.

2011-01-16 17:05:09 +00:00

ConstProp

Add the select optimization recently added to instcombine to constant folding.

2011-01-29 20:35:06 +00:00

CorrelatedValuePropagation

Test for lazy value info's ability to prove the absense of NULLs in pointers.

2011-01-16 21:57:20 +00:00

DeadArgElim

Teach DAE to look for functions whose arguments are unused, and change all callers to pass in an undefvalue instead.

2011-01-16 21:25:33 +00:00

DeadStoreElimination

Fix PR8728, a miscompilation I recently introduced. When optimizing

2010-12-06 01:48:06 +00:00

EarlyCSE

Duncan deftly points out that readnone functions aren't

2011-01-03 23:38:13 +00:00

FunctionAttrs

Make ModRefBehavior a lattice. Use this to clean up AliasAnalysis

2010-11-10 01:02:18 +00:00

GlobalDCE

…

GlobalOpt

Add unnamed_addr when we can show that address of a global is not used.

2011-01-19 16:32:21 +00:00

GVN

Give GVN back the ability to perform simple conditional propagation on conditional branch values.

2010-12-21 23:54:34 +00:00

IndVarSimplify

Remove LoopIndexSplit pass. It is neither maintained nor used by anyone.

2010-10-07 23:29:37 +00:00

Inline

relax testcase a bit.

2011-01-14 07:46:33 +00:00

InstCombine

Recognize and simplify

2011-01-30 22:01:13 +00:00

InstSimplify

Reenable the transform "(X*Y)/Y->X" when the multiplication is known not to

2011-02-02 20:52:00 +00:00

Internalize

…

IPConstantProp

more test cleanup

2010-09-02 22:38:56 +00:00

JumpThreading

Re-apply r124518 with fix. Watch out for invalidated iterator.

2011-01-29 04:46:23 +00:00

LCSSA

…

LICM

Enhance LICM to promote alias sets whose pointers themselves are stored,

2010-12-19 05:57:25 +00:00

LoopDeletion

…

LoopIdiom

Teach loop-idiom to turn a loop containing a memset into a larger memset

2011-01-04 07:46:33 +00:00

LoopRotate

merge tests into one crash.ll test.

2011-01-11 07:50:07 +00:00

LoopSimplify

Fix PR8702 by not having LoopSimplify claim to preserve LCSSA form. As described

2011-01-02 13:38:21 +00:00

LoopStrengthReduce

…

LoopUnroll

Revert r113439, which relaxed the requirement that loops containing calls cannot be unrolled. After some discussion,

2010-09-09 20:02:23 +00:00

LoopUnswitch

Factor code for testing whether replacing one value with another

2010-11-18 19:59:41 +00:00

LowerAtomic

…

LowerInvoke

…

LowerSetJmp

…

LowerSwitch

…

Mem2Reg

…

MemCpyOpt

Actually check memcpy lengths, instead of just commenting about

2011-01-21 22:07:57 +00:00

MergeFunc

Fix surprising missed optimization in mergefunc where we forgot to consider

2011-01-27 08:38:19 +00:00

PruneEH

…

Reassociate

Fix reassociate to clear optional flags, such as nsw.

2011-02-02 02:02:34 +00:00

ScalarRepl

merge all the "crash tests" into crash.ll

2011-01-24 03:37:34 +00:00

SCCP

…

SimplifyCFG

SimplifyCFG: Turn switches into sub+icmp+branch if possible.

2011-02-02 15:56:22 +00:00

SimplifyLibCalls

Revert r64460. strtol and friends cannot be marked readonly, even with

2010-12-17 01:09:43 +00:00

Sink

Make BasicAliasAnalysis a normal AliasAnalysis implementation which

2010-10-18 18:04:47 +00:00

SRETPromotion

…

StripSymbols

…

TailCallElim

Add a test for TCE return duplication.

2011-01-29 04:53:35 +00:00

TailDup

The output of opt -stats must be sent to stderr. Patch by NAKAMURA Takumi!

2010-09-01 18:32:56 +00:00