[all-commits] [llvm/llvm-project] 4b1120: [MachineInstr] Add support for instructions with m...

[darkbuck via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 4b1120159274ca98b4a58064b116aba88372ac98
      https://github.com/llvm/llvm-project/commit/4b1120159274ca98b4a58064b116aba88372ac98
  Author: Michael Liao <michael.hliao at gmail.com>
  Date:   2020-11-03 (Tue, 03 Nov 2020)

  Changed paths:
    M llvm/include/llvm/CodeGen/TargetInstrInfo.h
    M llvm/lib/CodeGen/MachineInstr.cpp
    M llvm/test/CodeGen/AArch64/merge-store-dependency.ll
    M llvm/test/CodeGen/ARM/big-endian-neon-fp16-bitconv.ll
    M llvm/test/CodeGen/Thumb2/mve-float32regloops.ll
    M llvm/test/CodeGen/Thumb2/mve-phireg.ll
    M llvm/test/CodeGen/Thumb2/mve-vst3.ll
    M llvm/test/CodeGen/Thumb2/umulo-128-legalisation-lowering.ll
    M llvm/test/CodeGen/X86/store_op_load_fold2.ll

  Log Message:
  -----------
  [MachineInstr] Add support for instructions with multiple memory operands.

- Basically iterate each pair of memory operands from both instructions
  and return true if any of them may alias.
- The exception are memory instructions without any memory operand. They
  may touch everything and could alias to any memory instruction.

Differential Revision: https://reviews.llvm.org/D89447