[all-commits] [llvm/llvm-project] 19db96: Mips/GlobalISel: Fix adding $gp to calls as a def ...

[Matt Arsenault via All-commits]

  Branch: refs/heads/users/arsenm/mips/gisel-call-gp-implicit-use
  Home:   https://github.com/llvm/llvm-project
  Commit: 19db961c7f0b083be2aa36881f1a9d733d678644
      https://github.com/llvm/llvm-project/commit/19db961c7f0b083be2aa36881f1a9d733d678644
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2026-09-30 (Wed, 30 Sep 2026)

  Changed paths:
    M llvm/lib/Target/Mips/MipsCallLowering.cpp
    M llvm/test/CodeGen/Mips/GlobalISel/irtranslator/call.ll
    M llvm/test/CodeGen/Mips/GlobalISel/irtranslator/global_address_pic.ll

  Log Message:
  -----------
  Mips/GlobalISel: Fix adding $gp to calls as a def instead of a use

A PIC call needs $gp to point at the GOT for the lazy binding stub.
SelectionDAG adds it as an ordinary argument register. GlobalISel
instead added it as an implicit def, which killed the $gp copy set up
right before the call.

Co-authored-by: Claude Opus 5 <noreply at anthropic.com>



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