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.

1 files changed, 0 insertions, 2 deletions

diff --git a/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp b/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
index 0ed2a678c4f..54f3f7c1013 100644
--- a/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
+++ b/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
@@ -3458,8 +3458,6 @@ int llvm::isAArch64FrameOffsetLegal(const MachineInstr &MI,
   case AArch64::ST1Fourv1d:
   case AArch64::IRG:
   case AArch64::IRGstack:
-  case AArch64::STGloop:
-  case AArch64::STZGloop:
     return AArch64FrameOffsetCannotUpdate;
   }