[lld] [llvm] [lld][AArch64][Build Attributes] Add support for converting AArch64 Build Attributes to GNU Properties (PR #131990)

[via llvm-commits]

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@@ -0,0 +1,157 @@
+### This file replace .note.gnu.property with aarch64 build attributes in order to confirm
+### interoperability.
+
+# 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 tag1.o
+# RUN: cp tag1.o tag1a.o
+# RUN: ld.lld -shared tag1.o tag1a.o -o tagok.so
+# RUN: llvm-readelf -n tagok.so | FileCheck --check-prefix OK %s
+
+# OK: AArch64 PAuth ABI core info: platform 0x2a (unknown), version 0x1
+
+# RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu abi-tag2.s -o tag2.o
+# RUN: not ld.lld tag1.o tag1a.o tag2.o -o /dev/null 2>&1 | FileCheck --check-prefix ERR1 %s
+
+# ERR1:      error: incompatible values of AArch64 PAuth core info found
+# ERR1-NEXT: >>> tag1.o: 0x2a000000000000000{{1|2}}00000000000000
+# ERR1-NEXT: >>> tag2.o: 0x2a000000000000000{{1|2}}00000000000000
+
+# RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu abi-tag-short.s -o short.o
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sivan-shani wrote:

Removed the irrelevant parts from the test file.
Regarding malformed build attributes sections: the build attributes sections are the product of llvm-mc and are tested in that context. Do we need also tests inside lld?

https://github.com/llvm/llvm-project/pull/131990