[lld] [LLD][COFF] Add support for multi-arch ARM64X object files (PR #207868)

[Martin Storsjö via llvm-commits]

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+// REQUIRES: aarch64
+// RUN: split-file %s %t.dir && cd %t.dir
+
+// RUN: llvm-mc -filetype=obj -triple=aarch64-windows sym.s -o sym-arm64.obj
+// RUN: llvm-mc -filetype=obj -triple=arm64ec-windows sym.s -o sym-arm64ec.obj
+// RUN: llvm-objcopy --add-section=.obj.arm64ec=sym-arm64ec.obj --set-section-flags=.obj.arm64ec=debug \
+// RUN:              sym-arm64.obj sym.obj
+
+// RUN: llvm-mc -filetype=obj -triple=aarch64-windows ref.s -o ref-arm64.obj
+// RUN: llvm-mc -filetype=obj -triple=arm64ec-windows ref.s -o ref-arm64ec.obj
+// RUN: llvm-objcopy --add-section=.obj.arm64ec=ref-arm64ec.obj --set-section-flags=.obj.arm64ec=debug \
+// RUN:              ref-arm64.obj ref.obj
+
+// RUN: llvm-mc -filetype=obj -triple=arm64ec-windows %S/Inputs/loadconfig-arm64ec.s -o loadconfig-arm64ec.obj
+// RUN: llvm-mc -filetype=obj -triple=aarch64-windows %S/Inputs/loadconfig-arm64.s -o loadconfig-arm64.obj
+// RUN: llvm-objcopy --add-section=.obj.arm64ec=loadconfig-arm64ec.obj --set-section-flags=.obj.arm64ec=debug \
+// RUN:              loadconfig-arm64.obj loadconfig.obj
+
+// Test linking hybrid object files, verify that both native and EC exports are present.
+// RUN: lld-link -machine:arm64x -dll -noentry -out:out.dll sym.obj loadconfig.obj
+// RUN: llvm-readobj --coff-exports out.dll | FileCheck %s
+
+// RUN: lld-link -machine:arm64ec -dll -noentry -out:out-ec.dll sym.obj loadconfig.obj
+// RUN: lld-link -machine:arm64 -dll -noentry -out:out-native.dll sym.obj loadconfig.obj
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mstorsjo wrote:

Thanks!

https://github.com/llvm/llvm-project/pull/207868