[all-commits] [llvm/llvm-project] 522fd5: [Intrinsics][PreISelInstrinsicLowering] llvm.memcp...

[Alex Bradbury via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 522fd53838d577add8c19b5eccccae756fd27899
      https://github.com/llvm/llvm-project/commit/522fd53838d577add8c19b5eccccae756fd27899
  Author: Alex Bradbury <asb at igalia.com>
  Date:   2024-07-16 (Tue, 16 Jul 2024)

  Changed paths:
    M llvm/docs/LangRef.rst
    M llvm/include/llvm/IR/IntrinsicInst.h
    M llvm/include/llvm/IR/Intrinsics.td
    M llvm/lib/Analysis/Lint.cpp
    M llvm/lib/CodeGen/PreISelIntrinsicLowering.cpp
    A llvm/test/Transforms/PreISelIntrinsicLowering/X86/memcpy-inline-non-constant-len.ll
    M llvm/test/Verifier/intrinsic-immarg.ll

  Log Message:
  -----------
  [Intrinsics][PreISelInstrinsicLowering] llvm.memcpy.inline length no longer needs to be constant (#98281)

Following on from the discussion in

https://discourse.llvm.org/t/rfc-introducing-an-llvm-memset-pattern-inline-intrinsic/79496
and the equivalent change for llvm.memset.inline (#95397), this removes
the requirement that the length of llvm.memcpy.inline is constant.
PreISelInstrinsicLowering will expand llvm.memcpy.inline with
non-constant lengths, while the codegen path for constant lengths is
left unaltered.



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