[all-commits] [llvm/llvm-project] 2aeaaf: [GlobalISel] Add missing operand update when copy ...

[mikaelholmen via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2aeaaf841b58b2a6721f9271ae897e392fd0b357
      https://github.com/llvm/llvm-project/commit/2aeaaf841b58b2a6721f9271ae897e392fd0b357
  Author: Gabriel Hjort Åkerlund <gabriel.hjort.akerlund at ericsson.com>
  Date:   2021-01-20 (Wed, 20 Jan 2021)

  Changed paths:
    M llvm/include/llvm/CodeGen/GlobalISel/InstructionSelector.h
    M llvm/include/llvm/CodeGen/GlobalISel/InstructionSelectorImpl.h
    M llvm/include/llvm/CodeGen/GlobalISel/Utils.h
    M llvm/lib/CodeGen/GlobalISel/InstructionSelector.cpp
    M llvm/lib/CodeGen/GlobalISel/Utils.cpp
    M llvm/lib/Target/AArch64/GISel/AArch64CallLowering.cpp

  Log Message:
  -----------
  [GlobalISel] Add missing operand update when copy is required

When constraining an operand register using constrainOperandRegClass(),
the function may emit a COPY in case the provided register class does
not match the current operand register class. However, the operand
itself is not updated to make use of the COPY, thereby resulting in
incorrect code. This patch fixes that bug by updating the machine
operand accordingly.

Reviewed By: dsanders

Differential Revision: https://reviews.llvm.org/D91244