[all-commits] [llvm/llvm-project] 9f7567: [PreISelIntrinsicLowering] Reuse previously genera...

Alex Bradbury via All-commits all-commits at lists.llvm.org
Mon Jun 23 08:36:10 PDT 2025


  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9f7567d33a6c68fe5139678768c0cb4d6e614d5f
      https://github.com/llvm/llvm-project/commit/9f7567d33a6c68fe5139678768c0cb4d6e614d5f
  Author: Alex Bradbury <asb at igalia.com>
  Date:   2025-06-23 (Mon, 23 Jun 2025)

  Changed paths:
    M llvm/lib/CodeGen/PreISelIntrinsicLowering.cpp
    M llvm/test/Transforms/PreISelIntrinsicLowering/X86/memset-pattern.ll

  Log Message:
  -----------
  [PreISelIntrinsicLowering] Reuse previously generated GlobalVariable for memset_pattern16 when possible (#144677)

As Constants are already uniquified, we can use a map to keep track of
whether a GlobalVariable was produced for a given Constant or not.
Repeated globals with the same value was one of the codegen differences
noted in #126736. This patch removes that diff, producing cleaner
output.



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