Sanjay Patel f4448063cc [InstCombine] try to reduce shuffle with bitcasted operand ...

shuf (bitcast X), undef, Mask --> bitcast X'

The 'inverse shuffles' test (shuf_bitcast_operand) is a pattern
in the motivating examples from PR35454:
https://bugs.llvm.org/show_bug.cgi?id=35454
(see also D76727)

We can deal with this class of patterns in generic instcombine
because we are not creating any new shuffles, just a bitcast.

Alive2 proof:
http://volta.cs.utah.edu:8080/z/mwDUZf

Differential Revision: https://reviews.llvm.org/D76844

2020-04-02 13:44:50 -04:00

..

CMakeLists.txt

[cmake] Explicitly mark libraries defined in lib/ as "Component Libraries"

2019-11-21 10:48:08 -08:00

InstCombineAddSub.cpp

[instcombine] remove fsub to fneg hacks; only emit fneg

2020-03-10 16:57:02 +01:00

InstCombineAndOrXor.cpp

[InstCombine] Fix worklist management in foldXorOfICmps()

2020-03-28 18:25:21 +01:00

InstCombineAtomicRMW.cpp

[InstCombine] Use replaceOperand() in more places

2020-02-11 17:38:23 +01:00

InstCombineCalls.cpp

[NFC] Split Knowledge retention and place it more appropriatly

2020-04-02 15:01:41 +02:00

InstCombineCasts.cpp

Remove "mask" operand from shufflevector.

2020-03-31 13:08:59 -07:00

InstCombineCompares.cpp

[InstCombine] add tests for cmyk benchmark; NFC

2020-04-02 13:00:46 -04:00

InstCombineInternal.h

[InstCombine] Fix worklist management in varargs transform

2020-03-29 18:04:12 +02:00

InstCombineLoadStoreAlloca.cpp

[InstCombine][SVE] Fix InstCombiner::visitAllocaInst for scalable vector.

2020-03-18 20:57:14 -07:00

InstCombineMulDivRem.cpp

[InstCombine] Use replaceOperand() in div transforms

2020-04-01 19:55:00 +02:00

InstCombinePHI.cpp

[InstCombine] Use replaceOperand() in non zero phi transform

2020-03-31 21:54:21 +02:00

InstCombineSelect.cpp

[InstCombine] Use replaceOperand() in some select transforms

2020-03-31 22:10:55 +02:00

InstCombineShifts.cpp

[SVE] Update API ConstantVector::getSplat() to use ElementCount.

2020-03-12 13:22:41 -07:00

InstCombineSimplifyDemanded.cpp

Remove "mask" operand from shufflevector.

2020-03-31 13:08:59 -07:00

InstCombineTables.td

…

InstCombineVectorOps.cpp

[InstCombine] try to reduce shuffle with bitcasted operand

2020-04-02 13:44:50 -04:00

InstructionCombining.cpp

[InstCombine] enhance freelyNegateValue() by handling xor

2020-04-01 15:05:13 -04:00

LLVMBuild.txt

…