Chris Lattner 8cd4efb6a5 implement constant folding support for an exotic constant expr: ...

ret i64 ptrtoint (i8* getelementptr ([1000 x i8]* @X, i64 1, i64 sub (i64 0, i64 ptrtoint ([1000 x i8]* @X to i64))) to i64)

to "ret i64 1000".  This allows us to correctly compute the trip count
on a loop in PR8883, which occurs with std::fill on a char array.  This
allows us to transform it into a memset with a constant size.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122950 91177308-0d34-0410-b5e6-96231b3b80d8

2011-01-06 06:19:46 +00:00

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ADCE

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ArgumentPromotion

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BlockPlacement

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BranchFolding

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CodeExtractor

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CodeGenPrepare

revert r122164, I'm going to go with a different approach.

2010-12-19 04:23:03 +00:00

ConstantMerge

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ConstProp

test/Transforms/ConstProp/logicaltest.ll: FileCheck-ize.

2010-12-29 03:58:56 +00:00

CorrelatedValuePropagation

Fix PR8790, another instance where unreachable code can cause instruction simplification to fail,

2010-12-15 00:55:35 +00:00

DeadArgElim

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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

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GlobalDCE

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GlobalOpt

fix a globalopt crash on two Adobe-C++ testcases that the recent

2011-01-01 22:31:46 +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

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Inline

when eliding a byval copy due to inlining a readonly function, we have

2010-12-20 08:10:40 +00:00

InstCombine

implement constant folding support for an exotic constant expr:

2011-01-06 06:19:46 +00:00

InstSimplify

Revert commit 122654 at the request of Chris, who reckons that instsimplify

2011-01-01 20:08:02 +00:00

Internalize

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IPConstantProp

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JumpThreading

Teach jump threading to "look through" a select when the branch direction of a terminator depends on it.

2010-12-15 09:51:20 +00:00

LCSSA

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LICM

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

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

LoopDeletion

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LoopIdiom

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

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

LoopRotate

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LoopSimplify

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

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

LoopStrengthReduce

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LoopUnroll

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LoopUnswitch

Factor code for testing whether replacing one value with another

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

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

start using irbuilder to make mem intrinsics in a few passes.

2010-12-26 22:57:41 +00:00

MergeFunc

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PartialSpecialize

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PruneEH

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Reassociate

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ScalarRepl

Treat a call of function pointer like a load of the pointer when considering

2010-11-24 22:04:20 +00:00

SCCP

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SimplifyCFG

SimplifyCFG: Ranges can be larger than 64 bits. Fixes Release-selfhost build.

2010-12-17 10:48:14 +00:00

SimplifyLibCalls

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

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

Sink

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SRETPromotion

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StripSymbols

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TailCallElim

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TailDup

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