[all-commits] [llvm/llvm-project] 2d670d: GlobalISel: Avoid crash on asm with lying result t...

[Matt Arsenault via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2d670de84c485b514a1950dda3602f899b6f0f58
      https://github.com/llvm/llvm-project/commit/2d670de84c485b514a1950dda3602f899b6f0f58
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2022-01-26 (Wed, 26 Jan 2022)

  Changed paths:
    M llvm/lib/CodeGen/GlobalISel/InlineAsmLowering.cpp
    A llvm/test/CodeGen/AMDGPU/GlobalISel/inline-asm-mismatched-size.ll

  Log Message:
  -----------
  GlobalISel: Avoid crash on asm with lying result types

The physical register in the asm has the wrong type for the declared
IR. It seems to work in the DAG by extracting the 4 elements that are
defined in the IR from the register, but that isn't handled here. This
doesn't seem to be a well tested path since other mismatched cases are
crashing the DAG asm handling.