[llvm] 0d54a87 - Revert "[DWARF] Support 'G' in dwarf parser"

[Florian Mayer via llvm-commits]

Author: Florian Mayer
Date: 2022-06-08T13:53:00-07:00
New Revision: 0d54a874ee2449fdf081aeee07bc71e589f56251

URL: https://github.com/llvm/llvm-project/commit/0d54a874ee2449fdf081aeee07bc71e589f56251
DIFF: https://github.com/llvm/llvm-project/commit/0d54a874ee2449fdf081aeee07bc71e589f56251.diff

LOG: Revert "[DWARF] Support 'G' in dwarf parser"

This reverts commit 4c71c3386c5c79560517a22e75938c9951f8de68.

Added: 
    

Modified: 
    llvm/lib/DebugInfo/DWARF/DWARFDebugFrame.cpp

Removed: 
    llvm/test/DebugInfo/AArch64/stack-tagging-cfi.s


################################################################################
diff  --git a/llvm/lib/DebugInfo/DWARF/DWARFDebugFrame.cpp b/llvm/lib/DebugInfo/DWARF/DWARFDebugFrame.cpp
index 9e5cbc601546..86b4a2fe270f 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFDebugFrame.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFDebugFrame.cpp
@@ -1138,10 +1138,6 @@ Error DWARFDebugFrame::parse(DWARFDataExtractor Data) {
             // B-Key is used for signing functions associated with this
             // augmentation string
             break;
-            // This stack frame contains MTE tagged data, so needs to be
-            // untagged on unwind.
-          case 'G':
-            break;
           }
         }
 

diff  --git a/llvm/test/DebugInfo/AArch64/stack-tagging-cfi.s b/llvm/test/DebugInfo/AArch64/stack-tagging-cfi.s
deleted file mode 100644
index a5e9c24261bc..000000000000
--- a/llvm/test/DebugInfo/AArch64/stack-tagging-cfi.s
+++ /dev/null
@@ -1,16 +0,0 @@
-# RUN: llvm-mc -filetype=obj -triple aarch64 -mattr=+mte %s -o %t.o
-# RUN: llvm-dwarfdump --eh-frame %t.o | FileCheck %s
-
-# CHECK: Augmentation:          "zRG"
-
-	.text
-	.globl	WithUnwind
-	.p2align	2
-	.type	WithUnwind, at function
-WithUnwind:
-	.cfi_startproc
-	.cfi_mte_tagged_frame
-	ret
-.Lfunc_end0:
-	.size	WithUnwind, .Lfunc_end0-WithUnwind
-	.cfi_endproc