[lld] [MTE] [lld] Don't tag symbols in sections with implicit start/stop (PR #73531)

[Fangrui Song via llvm-commits]

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@@ -0,0 +1,48 @@
+# REQUIRES: aarch64
+# RUN: llvm-mc -filetype=obj -triple=aarch64-none-linux-android %s -o %t
+# RUN: ld.lld %t -o %t.so -shared --android-memtag-mode=sync
+
+## Normally relocations are printed before the symbol tables, so reorder it a
+## bit to make it easier on matching addresses of relocations up with the
+## symbols.
+# RUN: llvm-readelf %t.so -s > %t.out
+# RUN: llvm-readelf %t.so --section-headers --relocs --memtag >> %t.out
+# RUN: FileCheck %s < %t.out
+
+# CHECK:     Symbol table '.dynsym' contains
+# CHECK-DAG: [[#%x,GLOBAL:]] 16 OBJECT GLOBAL DEFAULT [[#]] global{{$}}
+# CHECK-DAG: [[#%x,GLOBAL_IN_SECTION:]] 16 OBJECT GLOBAL DEFAULT [[#]] global_in_section{{$}}
+
+# CHECK:     Section Headers:
+# CHECK:     .memtag.globals.dynamic AARCH64_MEMTAG_GLOBALS_DYNAMIC
+# CHECK-NOT: .memtag.globals.static
+# CHECK-NOT: AARCH64_MEMTAG_GLOBALS_STATIC
+
+# CHECK:      Memtag Dynamic Entries
+# CHECK-NEXT: AARCH64_MEMTAG_MODE: Synchronous (0)
+# CHECK-NEXT: AARCH64_MEMTAG_HEAP: Disabled (0)
+# CHECK-NEXT: AARCH64_MEMTAG_STACK: Disabled (0)
+# CHECK-NEXT: AARCH64_MEMTAG_GLOBALS: 0x{{[0-9a-f]+}}
+# CHECK-NEXT: AARCH64_MEMTAG_GLOBALSSZ: 3
+
+# CHECK:      Memtag Global Descriptors:
+# CHECK-NEXT: 0x[[#GLOBAL]]: 0x10
+# CHECK-NOT:  0x
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MaskRay wrote:

`# CHECK-NOT: {{.}}` since there is an EOF

https://github.com/llvm/llvm-project/pull/73531