[all-commits] [llvm/llvm-project] 979e8a: [AArch64] Check opcode before trying to extract re...

[David Tellenbach via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 979e8ae4fce64546c65d24864eedd8165bc9787b
      https://github.com/llvm/llvm-project/commit/979e8ae4fce64546c65d24864eedd8165bc9787b
  Author: David Tellenbach <dtellenbach at apple.com>
  Date:   2023-08-23 (Wed, 23 Aug 2023)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
    A llvm/test/CodeGen/AArch64/emit_fneg_with_non_register_operand.mir

  Log Message:
  -----------
  [AArch64] Check opcode before trying to extract register from operand

When matching FNEG patterns for the MachineCombiner we need to check for
opcodes first, before trying to extract a register from an operand.
Otherwise handling of instructions with non-register operands causes the
compiler to crash.

Differential Revision: https://reviews.llvm.org/D158473