Sanjay Patel 7b9482df3d [InstCombine] fold sdiv with common shl amount in operands ...

(X << Z) / (Y << Z) --> X / Y

https://alive2.llvm.org/ce/z/CLKzqT

This requires a surprising "nuw" constraint because we have
to guard against immediate UB via signed-div overflow with
-1 divisor.

This extends 008a89037a and is another transform
derived from issue #58137.

2022-10-12 11:32:15 -04:00

..

CMakeLists.txt

…

InstCombineAddSub.cpp

[InstCombine] try to fold mul by neg-power-of-2 to shl

2022-09-21 15:09:39 -04:00

InstCombineAndOrXor.cpp

[InstCombine] reduce another or-xor bitwise logic pattern

2022-09-03 09:32:08 -04:00

InstCombineAtomicRMW.cpp

[LLVM] Add the support for fmax and fmin in atomicrmw instruction

2022-07-06 10:57:53 -04:00

InstCombineCalls.cpp

[InstCombine] add assert/test for zext to i1

2022-09-26 16:01:25 -04:00

InstCombineCasts.cpp

[InstCombine] Remove buggy zext of icmp eq with pow2 fold (PR57899)

2022-09-22 16:37:10 +02:00

InstCombineCompares.cpp

[InstCombine] Fold ult(add(x,-1),c) -> ule(x,c) iff x != 0 (PR57635)

2022-09-20 16:44:41 +01:00

InstCombineInternal.h

[InstCombine] Directly replace instr in foldIntegerTypedPHI() (NFCI)

2022-10-05 13:28:23 +02:00

InstCombineLoadStoreAlloca.cpp

[Transforms] Qualify auto in range-based for loops (NFC)

2022-08-27 21:21:02 -07:00

InstCombineMulDivRem.cpp

[InstCombine] fold sdiv with common shl amount in operands

2022-10-12 11:32:15 -04:00

InstCombineNegator.cpp

[InstCombine] don't canonicalize shl+sub to mul+add

2022-09-21 08:39:07 -04:00

InstCombinePHI.cpp

[InstCombine] Directly replace instr in foldIntegerTypedPHI() (NFCI)

2022-10-05 13:28:23 +02:00

InstCombineSelect.cpp

[InstCombine] Use simplifyWithOpReplaced() for non-bool selects

2022-09-22 15:46:00 +02:00

InstCombineShifts.cpp

[InstCombine] propagate 'exact' when converting ashr to lshr

2022-10-07 13:17:19 -04:00

InstCombineSimplifyDemanded.cpp

[InstCombine] try multi-use demanded bits fold for 'sub'

2022-09-21 14:13:05 -04:00

InstCombineVectorOps.cpp

[instcombine] (extelt (inselt Vec, Value, Index), Index) -> Value

2022-10-10 15:41:53 -07:00

InstructionCombining.cpp

Reapply [InstCombine] Switch foldOpIntoPhi() to use InstSimplify

2022-10-07 11:04:19 +02:00