[llvm-branch-commits] [clang] [clang][DebugInfo] Disable VTable debug info (#130255) on COFF platforms (PR #150938)

[Tomohiro Kashiwada via llvm-branch-commits]

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@@ -222,3 +222,8 @@ void foo() {
 
 // CHECK: !DICompositeType(tag: DW_TAG_class_type, name: "A",
 // CHECK-SAME:             DIFlagFwdDecl
+
+// There is a full definition of the type available in the module.
+// CHECKCOFF: !DICompositeType(tag: DW_TAG_structure_type, name: "Virtual",
+// CHECKCOFF-SAME:             DIFlagFwdDecl
+// CHECKCOFF-SAME:             identifier: "_ZTS7Virtual")
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kikairoya wrote:

To be honest, I'm not quite sure why this change happens, as this diff is basically just a revert.
But your assumption sounds reasonable to me.

As you said, vtable-debug-info-inheritance-simple.cpp asserts that MinGW doesn't emit the debug info.

https://github.com/llvm/llvm-project/pull/150938