[lld] [clang-tools-extra] [llvm] [clang] [lld][AArch64][ELF][PAC] Support AUTH relocations and AUTH ELF marking (PR #72714)

[Fangrui Song via cfe-commits]

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@@ -0,0 +1,83 @@
+# REQUIRES: aarch64
+
+# RUN: rm -rf %t && split-file %s %t && cd %t
+
+# RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu abi-tag1.s -o tag11.o
+# RUN: cp tag11.o tag12.o
+# RUN: ld.lld -shared tag11.o tag12.o -o tagok.so
+# RUN: llvm-readelf -n tagok.so | FileCheck --check-prefix OK %s
+
+# OK: AArch64 PAuth ABI tag: platform 0x2a, version 0x1
+
+# RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu abi-tag2.s -o tag2.o
+# RUN: not ld.lld tag11.o tag12.o tag2.o -o /dev/null 2>&1 | FileCheck --check-prefix ERR1 %s
+
+# ERR1: error: incompatible values of AArch64 PAuth compatibility info found
+# ERR1: {{.*}}: 0x2A000000000000000{{1|2}}00000000000000
+# ERR1: {{.*}}: 0x2A000000000000000{{1|2}}00000000000000
+
+# RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu abi-tag-errs.s -o errs.o
+# RUN: not ld.lld errs.o -o /dev/null 2>&1 | FileCheck --check-prefix ERR2 %s
+
+# ERR2:      error: {{.*}}: invalid type field value 42 (1 expected)
+# ERR2-NEXT: error: {{.*}}: invalid name field value XXX (ARM expected)
+# ERR2-NEXT: error: {{.*}}: AArch64 PAuth compatibility info is too short (at least 16 bytes expected)
+
+# RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu abi-tag-short.s -o short.o
+# RUN: not ld.lld short.o -o /dev/null 2>&1 | FileCheck --check-prefix ERR3 %s
+
+# ERR3: error: {{.*}}: section is too short
+
+# RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu no-info.s -o noinfo1.o
+# RUN: cp noinfo1.o noinfo2.o
+# RUN: not ld.lld -z pauth-report=error tag11.o noinfo1.o noinfo2.o -o /dev/null 2>&1 | FileCheck --check-prefix ERR4 %s
+# RUN: ld.lld -z pauth-report=warning tag11.o noinfo1.o noinfo2.o -o /dev/null 2>&1 | FileCheck --check-prefix WARN %s
+# RUN: ld.lld -z pauth-report=none tag11.o noinfo1.o noinfo2.o -o /dev/null 2>&1 | FileCheck --check-prefix NONE %s
+
+# ERR4:      error: {{.*}}noinfo1.o has no AArch64 PAuth compatibility info while {{.*}}tag11.o has one; either all or no input files must have it
----------------
MaskRay wrote:

Since `rm -rf %t && split-file %s %t && cd %t` is used, the filename no longer contains `%t`. You do not need `{{.*}}`

https://github.com/llvm/llvm-project/pull/72714