[lld] [lld][AArch64] Add support for GCS (PR #90732)

[Fangrui Song via llvm-commits]

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@@ -0,0 +1,128 @@
+# REQUIRES: aarch64
+# RUN: rm -rf %t && split-file %s %t && cd %t
+# RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu func1.s -o func1.o
+# RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu func2.s -o func2.o
+# RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu func2-gcs.s -o func2-gcs.o
+# RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu func3.s -o func3.o
+# RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu func3-gcs.s -o func3-gcs.o
+
+## GCS should be enabled when it's enabled in all inputs or when it's forced on.
+
+# RUN: ld.lld func1.o func2-gcs.o func3-gcs.o --shared -o gcs.exe
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MaskRay wrote:

We typically use `*.so` files for `-shared`. Executables omit the suffix.

https://github.com/llvm/llvm-project/pull/90732