[all-commits] [llvm/llvm-project] f037b0: Revert "[AArch64] Add Machine InstCombiner pattern...

[Andrew Savonichev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f037b07b5c2e6d86124d23d16fca66c16a639d3d
      https://github.com/llvm/llvm-project/commit/f037b07b5c2e6d86124d23d16fca66c16a639d3d
  Author: Andrew Savonichev <andrew.savonichev at gmail.com>
  Date:   2021-04-12 (Mon, 12 Apr 2021)

  Changed paths:
    M llvm/include/llvm/CodeGen/MachineCombinerPattern.h
    M llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
    M llvm/test/CodeGen/AArch64/arm64-fma-combines.ll
    R llvm/test/CodeGen/AArch64/machine-combiner-fmul-dup.mir

  Log Message:
  -----------
  Revert "[AArch64] Add Machine InstCombiner patterns for FMUL indexed variant"

This reverts commit cca9b5985c0c7e3c34da7f2db7cc8e7e707b0e2e.

Buildbot reported an error for CodeGen/AArch64/machine-combiner-fmul-dup.mir:

*** Bad machine code: Virtual register killed in block, but needed live out. ***
- function:    indexed_2s
- basic block: %bb.0 entry (0x640fee8)
Virtual register %7 is used after the block.

*** Bad machine code: Virtual register defs don't dominate all uses. ***
- function:    indexed_2s
- v. register: %7
LLVM ERROR: Found 2 machine code errors.