Sanjay Patel 296cb7b128 Fix for PR20059 (instcombine reorders shufflevector after instruction that may trap) ...

In PR20059 ( http://llvm.org/pr20059 ), instcombine eliminates shuffles that are necessary before performing an operation that can trap (srem).

This patch calls isSafeToSpeculativelyExecute() and bails out of the optimization in SimplifyVectorOp() if needed.

Differential Revision: http://reviews.llvm.org/D4424



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212629 91177308-0d34-0410-b5e6-96231b3b80d8

2014-07-09 16:34:54 +00:00

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CMakeLists.txt

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InstCombine.h

[InstCombine] mark ADD with nuw if no unsigned overflow

2014-06-17 00:42:07 +00:00

InstCombineAddSub.cpp

Make helper functions static.

2014-07-07 14:47:51 +00:00

InstCombineAndOrXor.cpp

Move optimization of some cases of (A & C1)|(B & C2) from instcombine to instsimplify. Patch by Rahul Jain, plus some last minute changes by me -- you can blame me for any bugs.

2014-06-19 03:51:46 +00:00

InstCombineCalls.cpp

InstCombine: Strength reduce sadd.with.overflow into a regular nsw add if we can prove that it cannot overflow.

2014-07-04 10:22:21 +00:00

InstCombineCasts.cpp

Canonicalize addrspacecast ConstExpr between different pointer types

2014-06-15 21:40:57 +00:00

InstCombineCompares.cpp

InstCombine: Simplify code, no functionality change.

2014-07-07 11:01:16 +00:00

InstCombineLoadStoreAlloca.cpp

Optimize InstCombine stack memory consumption

2014-07-01 21:36:20 +00:00

InstCombineMulDivRem.cpp

InstCombine: Optimize x/INT_MIN to x==INT_MIN

2014-07-02 06:42:13 +00:00

InstCombinePHI.cpp

[C++] Use 'nullptr'. Transforms edition.

2014-04-25 05:29:35 +00:00

InstCombineSelect.cpp

This removes TODO added in http://reviews.llvm.org/D3658

2014-06-12 14:06:00 +00:00

InstCombineShifts.cpp

Remove redundant code in InstCombineShift, no functionality change because instsimplify already does this and instcombine calls instsimplify a few lines above. Patch by Suyog Sarda!

2014-06-19 03:28:28 +00:00

InstCombineSimplifyDemanded.cpp

Rename ComputeMaskedBits to computeKnownBits. "Masked" has been

2014-05-14 21:14:37 +00:00

InstCombineVectorOps.cpp

fixed some typos

2014-07-07 22:13:58 +00:00

InstCombineWorklist.h

[C++] Use 'nullptr'.

2014-04-28 04:05:08 +00:00

InstructionCombining.cpp

Fix for PR20059 (instcombine reorders shufflevector after instruction that may trap)

2014-07-09 16:34:54 +00:00

LLVMBuild.txt

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Makefile

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