[clang] Desugar complex element types for promoted complex division (PR #168943)

[Matheus Izvekov via cfe-commits]

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@@ -320,7 +320,8 @@ class ComplexExprEmitter
   QualType getPromotionType(FPOptionsOverride Features, QualType Ty,
                             bool IsComplexDivisor) {
     if (auto *CT = Ty->getAs<ComplexType>()) {
-      QualType ElementType = CT->getElementType();
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mizvekov wrote:

Why not just use the canonical type?

https://github.com/llvm/llvm-project/pull/168943