[all-commits] [llvm/llvm-project] b9d0a0: AArch64: Stop changing legality rules based on sin...

[Matt Arsenault via All-commits]

  Branch: refs/heads/users/arsenm/aarch64/stop-changing-legality-libcall-sincos-stret
  Home:   https://github.com/llvm/llvm-project
  Commit: b9d0a05c767424df2698618f131bba9a6357f95f
      https://github.com/llvm/llvm-project/commit/b9d0a05c767424df2698618f131bba9a6357f95f
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2025-10-30 (Thu, 30 Oct 2025)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
    M llvm/test/CodeGen/AArch64/llvm.sincos.ll

  Log Message:
  -----------
  AArch64: Stop changing legality rules based on sincos_stret availability

This should be treated like a program property and not a static property
of the subtarget. The regression is the 3 element vector case; a combine
happens to replace the original undef value with non-undef, so the 4th
component is never eliminated. Trying to avoid that particular case
hits other combine regressions, so leave that for later.



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