[all-commits] [llvm/llvm-project] 3ba1b7: [AMDGPU][CodeGen] Fix `S_NOP` insertion during `S_...

[Lucas Ramirez via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3ba1b70dc2f4920d727ec1e678a79b744ce72b99
      https://github.com/llvm/llvm-project/commit/3ba1b70dc2f4920d727ec1e678a79b744ce72b99
  Author: Lucas Ramirez <11032120+lucas-rami at users.noreply.github.com>
  Date:   2026-07-14 (Tue, 14 Jul 2026)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPULowerVGPREncoding.cpp
    M llvm/test/CodeGen/AMDGPU/vgpr-set-msb-coissue.mir

  Log Message:
  -----------
  [AMDGPU][CodeGen] Fix `S_NOP` insertion during `S_SET_VGPR_MSB` placement (#209525)

The issue arises when co-issue optimizations move the initial insertion
position for `S_SET_VGPR_MSB` to an earlier spot, creating a mismatch
with the position used to determine whether a `S_NOP` is needed.



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