[clang] [clang][PowerPC] Add flag to enable compatibility with GNU for complex arguments (PR #77732)

[Amy Kwan via cfe-commits]

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@@ -361,6 +439,9 @@ ABIArgInfo PPC32_SVR4_ABIInfo::classifyReturnType(QualType RetTy) const {
       return ABIArgInfo::getDirect(CoerceTy);
     }
   }
+  if (isComplexInRegABI && RetTy->isAnyComplexType()) {
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amy-kwan wrote:

Braces not needed here.

https://github.com/llvm/llvm-project/pull/77732