[clang] [clang][ARM64X] Support compiling both native and EC objects with -marm64x (PR #207612)

[Martin Storsjö via cfe-commits]

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@@ -46,9 +46,9 @@
 // ARM64X: "-machine:arm64x"
 
 // RUN: not %clang --target=x86_64-linux-gnu -marm64x -### %s 2>&1 | FileCheck --check-prefix=HYBRID-ERR %s
-// HYBRID-ERR: error: unsupported option '-marm64x' for target 'x86_64-linux-gnu'
+// HYBRID-ERR: error: unsupported option '-marm64x' for target 'x86_64-unknown-linux-gnu'
 
-// RUN: %clang -c -marm64x  --target=arm64ec-pc-windows-msvc -fuse-ld=link -### %s 2>&1 | \
+// RUN: %clang -S -marm64x  --target=arm64ec-pc-windows-msvc -fuse-ld=link -### %s 2>&1 | \
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mstorsjo wrote:

Oh, so for an `-S` compile job, we don't invoke the multi-arch logic at all? I presume the same holds for darwin targets as well then?

https://github.com/llvm/llvm-project/pull/207612