Duncan Sands 1895e98ef3 Transform (X/Y)*Y into X if the division is exact. Instcombine already knows how ...

to do this and more, but would only do it if X/Y had only one use.  Spotted as the
most common missed simplification in SPEC by my auto-simplifier, now that it knows
about nuw/nsw/exact flags.  This removes a bunch of multiplications from 447.dealII
and 483.xalancbmk.  It also removes a lot from tramp3d-v4, which results in much
more inlining.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124560 91177308-0d34-0410-b5e6-96231b3b80d8

2011-01-30 18:03:50 +00:00

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ADCE

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ArgumentPromotion

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

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

BlockPlacement

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BranchFolding

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CodeExtractor

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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

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EarlyCSE

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FunctionAttrs

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GlobalDCE

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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

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IndVarSimplify

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Inline

relax testcase a bit.

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

InstCombine

My auto-simplifier noticed that ((X/Y)*Y)/Y occurs several times in SPEC

2011-01-28 16:51:11 +00:00

InstSimplify

Transform (X/Y)*Y into X if the division is exact. Instcombine already knows how

2011-01-30 18:03:50 +00:00

Internalize

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IPConstantProp

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JumpThreading

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

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

LCSSA

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LICM

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LoopDeletion

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LoopIdiom

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LoopRotate

merge tests into one crash.ll test.

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

LoopSimplify

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LoopStrengthReduce

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LoopUnroll

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LoopUnswitch

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LowerAtomic

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LowerInvoke

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LowerSetJmp

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LowerSwitch

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Mem2Reg

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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

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Reassociate

Fix PR9039, a use-after-free in reassociate. The issue was that the

2011-01-26 10:08:38 +00:00

ScalarRepl

merge all the "crash tests" into crash.ll

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

SCCP

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SimplifyCFG

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

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

SimplifyLibCalls

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Sink

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SRETPromotion

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StripSymbols

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TailCallElim

Add a test for TCE return duplication.

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

TailDup

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