Muhammad Bassiouni c662a9d303

[InstCombine] recognize missed i128 split optimization (#129363) ...

This pr fixes #126056, recognising a split i128 extension optimization.

Proof for working optimization:

```llvm
define i128 @src(i32 noundef %x) {
entry:
  %coerce.sroa.0.0.extract.trunc = sext i32 %x to i64
  %0 = ashr i32 %x, 31
  %coerce.sroa.2.0.extract.trunc = sext i32 %0 to i64
  %x.sroa.2.0.insert.ext.i = zext i64 %coerce.sroa.2.0.extract.trunc to i128
  %x.sroa.2.0.insert.shift.i = shl nuw i128 %x.sroa.2.0.insert.ext.i, 64
  %x.sroa.0.0.insert.ext.i = zext i64 %coerce.sroa.0.0.extract.trunc to i128
  %x.sroa.0.0.insert.insert.i = or disjoint i128 %x.sroa.2.0.insert.shift.i, %x.sroa.0.0.insert.ext.i
  ret i128 %x.sroa.0.0.insert.insert.i
}

define i128 @tgt(i32 noundef %x)  {
  %x.sroa.0.0.insert.insert.i = sext i32 %x to i128
  ret i128 %x.sroa.0.0.insert.insert.i
}
```

2025-03-06 09:42:52 +00:00

..

CMakeLists.txt

…

InstCombineAddSub.cpp

[InstCombine] Fold (add (add A, 1), (sext (icmp ne A, 0))) to call umax(A, 1) (#122491)

2025-01-12 16:51:58 +01:00

InstCombineAndOrXor.cpp

[InstCombine] recognize missed i128 split optimization (#129363)

2025-03-06 09:42:52 +00:00

InstCombineAtomicRMW.cpp

…

InstCombineCalls.cpp

[InstCombine] Add support for GEPs in simplifyNonNullOperand (#128365)

2025-02-23 17:19:31 +08:00

InstCombineCasts.cpp

[IRBuilder] Refactor FMF interface (#121657)

2025-01-06 14:37:04 +08:00

InstCombineCompares.cpp

Reapply [CaptureTracking][FunctionAttrs] Add support for CaptureInfo (#125880) (#128020)

2025-02-27 09:38:29 +01:00

InstCombineInternal.h

[InstCombine] Add support for GEPs in simplifyNonNullOperand (#128365)

2025-02-23 17:19:31 +08:00

InstCombineLoadStoreAlloca.cpp

[InstCombine] Simplify nonnull phi nodes (#128466)

2025-03-01 23:11:55 +08:00

InstCombineMulDivRem.cpp

[InstCombine] Fold mul (shr exact (X, N)), 2^N + 1 -> add (X , shr exact (X, N)) (#112407)

2025-02-13 14:25:09 +08:00

InstCombineNegator.cpp

[InstCombine] Drop nsw in negation of select (#112893)

2024-11-08 16:20:04 +08:00

InstCombinePHI.cpp

[InstCombine] Use combineMetadataForCSE in phi of loads fold

2025-01-08 11:29:04 +01:00

InstCombineSelect.cpp

[InstCombine] Fold X!=Y ? ctz(X^Y, true) : BW -> ctz(X^Y, false) (#128483)

2025-02-24 17:35:46 +08:00

InstCombineShifts.cpp

[InstCombine] Fold shift+cttz with power of 2 operands (#127055)

2025-02-18 07:06:56 +00:00

InstCombineSimplifyDemanded.cpp

[InstCombine] Drop Range attribute when simplifying 'fshl' based on demanded bits (#124429)

2025-01-25 13:35:11 -08:00

InstCombineVectorOps.cpp

[InstCombine] Avoid repeated hash lookups (NFC) (#124243)

2025-01-24 08:09:20 -08:00

InstructionCombining.cpp

InstCombine: Remove a check for pointer bitcasts (#128491)

2025-02-24 19:52:44 +07:00