[lld] [PAC][lld][AArch64][ELF] Support signed GOT (PR #113815)

[Fangrui Song via llvm-commits]

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@@ -0,0 +1,90 @@
+# REQUIRES: aarch64
+
+# RUN: rm -rf %t && split-file %s %t && cd %t
+
+# RUN: llvm-mc -filetype=obj -triple=aarch64 %p/Inputs/shared.s -o a.o
+# RUN: ld.lld -shared a.o -o a.so
+
+#--- ok.s
+# RUN: llvm-mc -filetype=obj -triple=aarch64 ok.s -o ok.o
+
+# RUN: ld.lld ok.o a.so -pie -o ok1
+# RUN: llvm-readelf -r -S -x .got ok1 | FileCheck %s --check-prefix=EXTERNAL
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MaskRay wrote:

I'd avoid `EXTERNAL` and `LOCAL` as check prefixes as well since it's unclear what external/local mean in the test context. 

https://github.com/llvm/llvm-project/pull/113815