[llvm-branch-commits] [clang] release/20.x: [Clang][MicrosoftMangle] Implement mangling for ConstantMatrixType (#134930) (PR #138017)

[Reid Kleckner via llvm-branch-commits]

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@@ -3552,7 +3552,22 @@ void MicrosoftCXXNameMangler::mangleType(const DependentSizedExtVectorType *T,
 
 void MicrosoftCXXNameMangler::mangleType(const ConstantMatrixType *T,
                                          Qualifiers quals, SourceRange Range) {
-  Error(Range.getBegin(), "matrix type") << Range;
+  QualType EltTy = T->getElementType();
+  const BuiltinType *ET = EltTy->getAs<BuiltinType>();
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rnk wrote:

You should also backport ccdd55c518277d749eff878ffcb5ca3de55c2a60 or manually delete this unused variable to keep the release branch CI green.

https://github.com/llvm/llvm-project/pull/138017