[all-commits] [llvm/llvm-project] 69c493: Revert "Reapply "RegisterCoalescer: Add implicit-d...

[Thurston Dang via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 69c4930aad9659ec6ab846c8e7124d6afe044b1e
      https://github.com/llvm/llvm-project/commit/69c4930aad9659ec6ab846c8e7124d6afe044b1e
  Author: Thurston Dang <thurston at google.com>
  Date:   2023-12-06 (Wed, 06 Dec 2023)

  Changed paths:
    M llvm/lib/CodeGen/RegisterCoalescer.cpp
    M llvm/test/CodeGen/AArch64/GlobalISel/arm64-pcsections.ll
    R llvm/test/CodeGen/X86/coalescer-breaks-subreg-to-reg-liveness.ll
    M llvm/test/CodeGen/X86/coalescer-implicit-def-regression-imp-operand-assert.mir
    R llvm/test/CodeGen/X86/coalescing-subreg-to-reg-requires-subrange-update.mir
    R llvm/test/CodeGen/X86/subreg-to-reg-coalescing.mir

  Log Message:
  -----------
  Revert "Reapply "RegisterCoalescer: Add implicit-def of super register when coalescing SUBREG_TO_REG""

This reverts commit 1f283a60a4bb896fa2d37ce00a3018924be82b9f.
Reason: breaks MSan buildbot
(https://lab.llvm.org/buildbot/#/builders/74/builds/24077)