Kai Luo 0f02431273 [InstCombine] Fold (sub (xor X, (sext C)), (sext C)) => (select C (neg X), X) (#79417) ...

This is useful when computing absdiff.

Correctness prove: https://alive2.llvm.org/ce/z/eMbxps,
https://alive2.llvm.org/ce/z/SNCWJe.

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Co-authored-by: Yingwei Zheng <dtcxzyw@qq.com>

2024-02-26 09:43:20 +08:00

..

CMakeLists.txt

…

InstCombineAddSub.cpp

[InstCombine] Fold (sub (xor X, (sext C)), (sext C)) => (select C (neg X), X) (#79417)

2024-02-26 09:43:20 +08:00

InstCombineAndOrXor.cpp

[InstCombine] Support zext nneg in foldLogicCastConstant (#82355)

2024-02-20 23:09:00 +08:00

InstCombineAtomicRMW.cpp

…

InstCombineCalls.cpp

[InstCombine] Fold umax(smax)/smin(umin) with non-negative constants (#82929)

2024-02-26 03:26:55 +08:00

InstCombineCasts.cpp

[InstCombine] Pick bfloat over half when shrinking ops that started with an fpext from bfloat (#82493)

2024-02-22 15:25:17 +01:00

InstCombineCompares.cpp

[InstCombine] foldFCmpIntToFPConst - simplify repeated calls to getBitWidth/getScalarSizeInBits. NFC.

2024-02-20 18:10:25 +00:00

InstCombineInternal.h

[InstCombine] Extract helper from matchFunnelShift (NFC)

2024-02-16 16:46:41 +01:00

InstCombineLoadStoreAlloca.cpp

[LLVM][SelectionDAG] Reduce number of ComputeValueVTs variants. (#75614)

2024-02-21 13:03:24 +00:00

InstCombineMulDivRem.cpp

[InstCombine] Remove some uninteresting FIXMEs (NFC)

2024-02-12 10:36:29 +01:00

InstCombineNegator.cpp

[InstSimplify][InstCombine] Remove unnecessary m_c_* matchers. (#81712)

2024-02-14 16:40:36 +08:00

InstCombinePHI.cpp

[InstCombine] Fold dependent IVs (#81151)

2024-02-21 09:14:48 +01:00

InstCombineSelect.cpp

[ValueTracking] Move the isSignBitCheck helper into ValueTracking. NFC. (#81704)

2024-02-14 15:33:08 +08:00

InstCombineShifts.cpp

[InstCombine] Extend (lshr/shl (shl/lshr -1, x), x) -> (lshr/shl -1, x) for multi-use

2024-02-13 12:53:16 -06:00

InstCombineSimplifyDemanded.cpp

[InstCombine] Do not perform binop-of-shuffle when mask is poison

2024-02-20 08:37:51 +01:00

InstCombineVectorOps.cpp

[InstCombine] Preserve poison in bitcast of insertelement fold

2023-12-19 13:06:04 +01:00

InstructionCombining.cpp

[InstCombine] Add support for cast instructions in getFreelyInvertedImpl (#82451)

2024-02-23 03:40:39 +08:00