Nikita Popov 61d2f3a71e [InstCombine] Canonicalize icmp eq pow2 more thoroughly ...

We currently already canonicalize icmp eq (%x & Pow2), Pow2 to
icmp ne (%x & Pow2), 0. This patch generalizes the fold based on
known bits.

In particular, this allows us to handle comparisons against
!range !{i64 0, i64 2} loads, which addresses an optimization
regression in Rust caused by 8df376db7282b955e7990cb8887ee9dcd3565040.

Differential Revision: https://reviews.llvm.org/D146149

2023-03-16 09:41:52 +01:00

..

CMakeLists.txt

…

InstCombineAddSub.cpp

[InstCombine] Reduce absolute diff from min+max+sub

2023-03-10 08:00:40 +08:00

InstCombineAndOrXor.cpp

InstCombine: Handle folding fcmp of 0 into llvm.is.fpclass

2023-03-15 07:07:55 -04:00

InstCombineAtomicRMW.cpp

[InstCombine][NFC] Fold variable into assert

2023-02-01 12:04:19 +01:00

InstCombineCalls.cpp

Reapply "InstCombine: Fold is.fpclass(x, fcZero) to fcmp oeq 0"

2023-03-15 07:06:50 -04:00

InstCombineCasts.cpp

[IR] Remove ConstantExpr::getUMin() (NFC)

2023-03-06 13:16:27 +01:00

InstCombineCompares.cpp

[InstCombine] Canonicalize icmp eq pow2 more thoroughly

2023-03-16 09:41:52 +01:00

InstCombineInternal.h

[InstCombine] fold icmp of the sum of ext bool based on limited range

2023-02-15 10:34:00 +08:00

InstCombineLoadStoreAlloca.cpp

[InstCombine] Call simplifyLoadInst()

2023-02-20 10:49:44 +01:00

InstCombineMulDivRem.cpp

[InstCombine] relax constraint on udiv fold

2023-02-20 15:08:32 -05:00

InstCombineNegator.cpp

Don't include Optional.h

2022-12-14 21:16:22 -08:00

InstCombinePHI.cpp

[InstCombine] use dyn_cast instead of isa+cast; NFC

2023-03-06 13:49:47 -05:00

InstCombineSelect.cpp

Revert "[InstCombine] Return instruction from replaceUse()"

2023-03-14 17:46:33 +01:00

InstCombineShifts.cpp

[InstCombine] Transform (shift X,Or(Y,BitWidth-1)) -> (shift X,BitWidth-1)

2023-03-06 20:30:06 -06:00

InstCombineSimplifyDemanded.cpp

[InstCombine] use demanded vector elements to eliminate partially redundant instructions

2023-02-28 09:43:44 -05:00

InstCombineVectorOps.cpp

[Transforms] Use *{Set,Map}::contains (NFC)

2023-03-14 00:24:30 -07:00

InstructionCombining.cpp

Revert "[InstCombine] use loop info when running the pass after loop vectorization"

2023-03-11 17:28:56 -05:00