[all-commits] [llvm/llvm-project] 58deb2: Revert "Merge memtag instructions with adjacent st...

[Evgenii Stepanov via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 58deb20dd2dfbfbfff8097ce80137d12a57a3607
      https://github.com/llvm/llvm-project/commit/58deb20dd2dfbfbfff8097ce80137d12a57a3607
  Author: Evgenii Stepanov <eugenis at google.com>
  Date:   2020-01-08 (Wed, 08 Jan 2020)

  Changed paths:
    M llvm/include/llvm/CodeGen/TargetFrameLowering.h
    M llvm/lib/CodeGen/PrologEpilogInserter.cpp
    M llvm/lib/Target/AArch64/AArch64ExpandPseudoInsts.cpp
    M llvm/lib/Target/AArch64/AArch64FrameLowering.cpp
    M llvm/lib/Target/AArch64/AArch64FrameLowering.h
    M llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
    M llvm/lib/Target/AArch64/AArch64InstrInfo.td
    M llvm/lib/Target/AArch64/AArch64RegisterInfo.cpp
    M llvm/lib/Target/AArch64/AArch64SelectionDAGInfo.cpp
    R llvm/test/CodeGen/AArch64/settag-merge.ll
    R llvm/test/CodeGen/AArch64/settag-merge.mir
    M llvm/test/CodeGen/AArch64/settag.ll
    M llvm/test/CodeGen/AArch64/stack-tagging-unchecked-ld-st.ll

  Log Message:
  -----------
  Revert "Merge memtag instructions with adjacent stack slots."

*** Bad machine code: Tied use must be a register ***
- function:    stg_alloca17
- basic block: %bb.0 entry (0x20076710580)
- instruction: early-clobber %0:gpr64common, early-clobber %1:gpr64sp = STGloop 272, %stack.0.a :: (store 272 into %ir.a, align 16)
- operand 3:   %stack.0.a

http://lab.llvm.org:8011/builders/llvm-clang-x86_64-expensive-checks-win/builds/21481/steps/test-check-all/logs/stdio

This reverts commit b675a7628ce6a21b1e4a71c079a67badfb8b073d.