[llvm] Allow multi-member variants in DWARF (PR #139300)

[David Blaikie via llvm-commits]

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@@ -0,0 +1,74 @@
+; RUN: %llc_dwarf -O0 -filetype=obj < %s > %t
+; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck %s
+
+; Check for a variant part where a variant has multiple members.
+
+; CHECK: DW_AT_name [DW_FORM_str{{[a-z]+}}]  ({{.*}} = "Discr")
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dwblaikie wrote:

Thanks @hubert-reinterpretcast - did this show up in any buildbot failures/elsewhere (or did you discover it locally)? I couldn't immediately find it in the two failures linked above which looked like sanitizer test flakes - but I do struggle to search through those reports to find the meaningful parts sometimes, so I may've missed it and would like to learn more about where I should've looked, if it is in there.

https://github.com/llvm/llvm-project/pull/139300