[clang] [Clang](NFC) Add coverage for VTable debug info (PR #151818)

[Jeremy Morse via cfe-commits]

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@@ -1,5 +1,3 @@
-// REQUIRES: target={{x86_64.*-linux.*}}
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jmorse wrote:

Do the RUN lines need updating to not hard-code the x86_64 triple too? Otherwise buildbots that don't build for x86 might trip up on this? Broadening out this test coverage to not be fixed on x86 is a good plan.

https://github.com/llvm/llvm-project/pull/151818