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

[Eli Friedman via cfe-commits]

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@@ -10726,7 +10726,7 @@ static void DetectPrecisionLossInComplexDivision(Sema &S, QualType DivisorTy,
   if (!CT)
     return;
 
-  QualType ElementType = CT->getElementType();
+  QualType ElementType = CT->getElementType().getCanonicalType();
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efriedma-quic wrote:

Should we just do this in GetHigherPrecisionFPType()?

I guess it doesn't matter that much either way, since it only has two callers.

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