[PATCH] D140858: [InstCombine]: Don't simplify bits if it causes imm32 to become imm64

[Noah Goldstein via Phabricator via llvm-commits]

goldstein.w.n created this revision.
Herald added subscribers: zzheng, hiraditya.
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goldstein.w.n requested review of this revision.
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Many targets have optimizations for encoding constants of a repeated
pattern. Sign extension is one of the more trivial/common ones so
avoid breaking it.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D140858

Files:
  llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
  llvm/test/Transforms/InstCombine/cast.ll
  llvm/test/Transforms/InstCombine/gep-combine-loop-invariant.ll
  llvm/test/Transforms/LoopUnroll/runtime-unroll-remainder.ll
  llvm/test/Transforms/LoopVectorize/X86/float-induction-x86.ll
  llvm/test/Transforms/LoopVectorize/X86/invariant-load-gather.ll
  llvm/test/Transforms/LoopVectorize/X86/invariant-store-vectorization.ll
  llvm/test/Transforms/LoopVectorize/X86/small-size.ll
  llvm/test/Transforms/LoopVectorize/X86/x86-interleaved-store-accesses-with-gaps.ll
  llvm/test/Transforms/LoopVectorize/float-induction.ll
  llvm/test/Transforms/LoopVectorize/induction.ll
  llvm/test/Transforms/LoopVectorize/invariant-store-vectorization-2.ll
  llvm/test/Transforms/LoopVectorize/invariant-store-vectorization.ll
  llvm/test/Transforms/LoopVectorize/loop-scalars.ll
  llvm/test/Transforms/LoopVectorize/vector-geps.ll
  llvm/test/Transforms/PhaseOrdering/X86/excessive-unrolling.ll
  llvm/test/Transforms/PhaseOrdering/X86/pixel-splat.ll
  llvm/test/Transforms/PhaseOrdering/X86/vdiv.ll

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