Sanjay Patel 678b9c5dde [InstCombine] try difference-of-shifts factorization before negator ...

We need to preserve wrapping flags to allow better folds.
The cases with geps may be non-intuitive, but that appears to agree with Alive2:
https://alive2.llvm.org/ce/z/JQcqw7
We create 'nsw' ops independent from the original wrapping on the sub.

2020-11-24 13:56:30 -05:00

..

CMakeLists.txt

llvmbuildectomy - replace llvm-build by plain cmake

2020-11-13 10:35:24 +01:00

InstCombineAddSub.cpp

[InstCombine] try difference-of-shifts factorization before negator

2020-11-24 13:56:30 -05:00

InstCombineAndOrXor.cpp

[InstCombine] Fold and(shl(zext(x), width(SIGNMASK) - width(%x)), SIGNMASK) to and(sext(%x), SIGNMASK)

2020-11-20 00:31:27 +03:00

InstCombineAtomicRMW.cpp

Add missing namespace closure comments. NFCI.

2020-09-23 16:19:25 +01:00

InstCombineCalls.cpp

[InstCombine] Do not introduce bitcasts for swifterror arguments.

2020-10-28 21:52:12 +00:00

InstCombineCasts.cpp

[InstCombine] narrowFunnelShift - fold trunc/zext or(shl(a,x),lshr(b,sub(bw,x))) -> fshl(a,b,x) (PR35155)

2020-10-24 12:42:43 +01:00

InstCombineCompares.cpp

[InstCombine] Fix constant-folding of overflowing arithmetic ops on vectors

2020-11-09 14:41:07 +03:00

InstCombineInternal.h

[InstCombine] allow vectors for masked-add -> xor fold

2020-11-17 13:36:08 -05:00

InstCombineLoadStoreAlloca.cpp

[SVE][InstCombine] Fix TypeSize warning in canReplaceGEPIdxWithZero

2020-10-26 17:40:26 +00:00

InstCombineMulDivRem.cpp

[InstCombine] Replace getLogBase2 internal helper with ConstantExpr::getExactLogBase2. NFCI.

2020-10-11 10:31:17 +01:00

InstCombineNegator.cpp

[InstCombine] Negator: - (C - %x) --> %x - C (PR47997)

2020-11-03 16:06:51 +03:00

InstCombinePHI.cpp

Add missing namespace closure comments. NFCI.

2020-09-23 16:19:25 +01:00

InstCombineSelect.cpp

[InstCombine] foldSelectFunnelShift - block poison in funnel shift value

2020-11-08 12:58:30 +00:00

InstCombineShifts.cpp

[InstCombine] visitShl - ensure inner shifts have inrange amounts

2020-10-29 15:28:15 +00:00

InstCombineSimplifyDemanded.cpp

Revert "[InstCombine] add multi-use demanded bits fold for add with low-bit mask"

2020-11-16 14:48:09 -05:00

InstCombineVectorOps.cpp

[InstCombine] Use is_contained (NFC)

2020-11-21 15:47:11 -08:00

InstructionCombining.cpp

Rename EHPersonality::MSVC_Win64SEH to EHPersonality::MSVC_TableSEH. NFC.

2020-10-27 23:22:13 -07:00