Owen Anderson 12984de314 Add an InstCombine transform to recognize instances of manual overflow-safe addition ...

(performing the addition in a wider type and explicitly checking for overflow), and
fold them down to intrinsics.  This currently only supports signed-addition, but could
be generalized if someone works out the magic constant formulas for other operations.

Fixes <rdar://problem/8558713>.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121905 91177308-0d34-0410-b5e6-96231b3b80d8

2010-12-15 22:32:38 +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

Add a test for CodeGenPrepare's ability to look through PHI nodes when performing

2010-11-19 22:34:53 +00:00

ConstantMerge

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ConstProp

Teach ConstantFoldInstruction() how to fold insertvalue and extractvalue.

2010-11-29 20:36:52 +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

FunctionAttrs

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GlobalDCE

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GlobalOpt

reapply r121100 with a tweak to constant fold ConstExprs with TargetData

2010-12-07 04:33:29 +00:00

GVN

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IndVarSimplify

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Inline

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InstCombine

Add an InstCombine transform to recognize instances of manual overflow-safe addition

2010-12-15 22:32:38 +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

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LoopDeletion

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LoopRotate

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LoopSimplify

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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

enhance memcpyopt to zap memcpy's that have the same src/dst.

2010-12-09 07:45:45 +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

- Insert new instructions before DomBlock's terminator,

2010-12-14 08:46:09 +00:00

SimplifyLibCalls

Add a puts optimization that converts puts() to putchar('\n').

2010-11-30 06:19:18 +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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