Dhruv Chawla be57381a4a

[InstCombine] Create a class to lazily track computed known bits (#66611) ...

This patch adds a new class "WithCache" which stores a pointer to
any type passable to computeKnownBits along with KnownBits
information which is computed on-demand when getKnownBits()
is called. This allows reusing the known bits information when it is
passed as an argument to multiple functions.

It also changes a few functions to accept WithCache(s) so that
known bits information computed in some callees can be propagated to
others from the top level visitAddSub caller.

This gives a speedup of 0.14%:
https://llvm-compile-time-tracker.com/compare.php?from=499d41cef2e7bbb65804f6a815b9fa8b27efce0f&to=fbea87f1f1e6d5552e2bc309f8e201a3af6d28ec&stat=instructions:u

2023-10-17 21:40:18 +05:30

..

CMakeLists.txt

…

InstCombineAddSub.cpp

[InstCombine] Create a class to lazily track computed known bits (#66611)

2023-10-17 21:40:18 +05:30

InstCombineAndOrXor.cpp

[InstCombine] Canonicalize (X +/- Y) & Y into ~X & Y when Y is a power of 2 (#67915)

2023-10-12 17:18:12 +08:00

InstCombineAtomicRMW.cpp

[InstCombine][NFC] Fold variable into assert

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

InstCombineCalls.cpp

Revert "[ValueTracking] Remove by-ref computeKnownBits() overloads (NFC)"

2023-10-16 14:04:09 +02:00

InstCombineCasts.cpp

[InstCombine] Fold zext-of-icmp with no shift (#68503)

2023-10-09 23:46:09 +08:00

InstCombineCompares.cpp

[InstCombine] Fold Ext(i1) Pred shr(A, BW - 1) => i1 Pred A s< 0 (#68244)

2023-10-13 22:02:57 +08:00

InstCombineInternal.h

[InstCombine] Create a class to lazily track computed known bits (#66611)

2023-10-17 21:40:18 +05:30

InstCombineLoadStoreAlloca.cpp

Move global namespace cl::opt inside llvm:: or internalize them

2023-10-10 19:58:03 -07:00

InstCombineMulDivRem.cpp

[InstCombine] Don't mix X << Y / Z << Y with X << Y / X << Z (#69302)

2023-10-17 18:47:49 +08:00

InstCombineNegator.cpp

[ValueTracking] Use SimplifyQuery in haveNoCommonBitsSet() (NFC)

2023-10-10 11:39:59 +02:00

InstCombinePHI.cpp

[InstCombine] Expand redundant phi cycle elimination (#67968)

2023-10-04 09:34:08 +01:00

InstCombineSelect.cpp

Revert "[ValueTracking] Remove by-ref computeKnownBits() overloads (NFC)"

2023-10-16 14:04:09 +02:00

InstCombineShifts.cpp

[InstCombine] Improve logic for adding flags to shift instructions.

2023-10-12 16:05:19 -05:00

InstCombineSimplifyDemanded.cpp

Revert "[ValueTracking] Remove by-ref computeKnownBits() overloads (NFC)"

2023-10-16 14:04:09 +02:00

InstCombineVectorOps.cpp

[IR]Add NumSrcElts param to is..Mask static function in ShuffleVectorInst.

2023-10-05 06:17:07 -07:00

InstructionCombining.cpp

Revert "Reapply "InstCombine: Introduce SimplifyDemandedUseFPClass""

2023-10-12 20:23:39 +00:00