Chenbing Zheng b43dd2f6c4 [InstCombine] improve fold for icmp_eq_and to icmp_ult ...

In D95959, the improve analysis for "C >> X" broken the fold
((%x & C) == 0) --> %x u< (-C) iff (-C) is power of two.

It simplifies C, but fails to satisfy the fold condition.
This patch try to restore C before the fold.

Reviewed By: spatel

Differential Revision: https://reviews.llvm.org/D128790

2022-07-05 17:18:23 +08:00

..

CMakeLists.txt

…

InstCombineAddSub.cpp

[InstCombine] fold sub of min/max of sub with common operand

2022-07-04 18:55:24 -04:00

InstCombineAndOrXor.cpp

[InstCombine] fold negated low-bit-mask to cmp+select

2022-07-03 12:25:26 -04:00

InstCombineAtomicRMW.cpp

Cleanup includes: Transform/Scalar

2022-03-03 07:56:34 +01:00

InstCombineCalls.cpp

[NFC] Switch a few uses of undef to poison as placeholders for unreachble code

2022-07-03 14:34:03 +01:00

InstCombineCasts.cpp

[InstCombine] Make use of low zero bits to determine exact int->fp cast

2022-07-05 09:15:12 +08:00

InstCombineCompares.cpp

[InstCombine] improve fold for icmp_eq_and to icmp_ult

2022-07-05 17:18:23 +08:00

InstCombineInternal.h

[InstCombine] Push freeze through recurrence phi

2022-06-17 15:01:41 +02:00

InstCombineLoadStoreAlloca.cpp

[APInt] Remove all uses of zextOrSelf, sextOrSelf and truncOrSelf

2022-05-19 11:23:13 +01:00

InstCombineMulDivRem.cpp

[NFC] format InstructionSimplify & lowerCaseFunctionNames

2022-06-09 16:10:08 +02:00

InstCombineNegator.cpp

[InstCombine] Fold sub(Y,and(lshr(X,C),1)) --> add(ashr(shl(X,(BW-1)-C),BW-1),Y) (PR53610)

2022-02-15 13:24:20 +00:00

InstCombinePHI.cpp

[InstCombine] Improve check for catchswitch BBs (NFC)

2022-06-15 01:06:13 -07:00

InstCombineSelect.cpp

[InstCombine] restrict select of bit-tests to constant shift amounts

2022-07-01 16:24:34 -04:00

InstCombineShifts.cpp

[InstCombine] Avoid some calls to ConstantExpr::get() (NFCI)

2022-06-29 16:26:02 +02:00

InstCombineSimplifyDemanded.cpp

[llvm] Don't use Optional::hasValue (NFC)

2022-06-25 21:42:52 -07:00

InstCombineVectorOps.cpp

[llvm] Use value_or instead of getValueOr (NFC)

2022-06-18 23:07:11 -07:00

InstructionCombining.cpp

[InstCombine] Avoid ConstantExpr::get() in phi binop fold

2022-07-04 16:46:27 +02:00