[clang] [Sparc][clang] make `_Complex` ABI GCC-compatible (PR #212340)

[Sergei Barannikov via cfe-commits]

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@@ -277,6 +313,20 @@ ABIArgInfo SparcV9ABIInfo::classifyType(QualType Ty, unsigned SizeLimit,
       return ABIArgInfo::getExtend(Ty);
     }
 
+  // When being GCC-compatible, cast a complex integer to an integer type
+  // of the right size to get the correct scalar-like behavior.
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s-barannikov wrote:

Can you expand the comment saying how other complex types are passed?
So that we don't have to dig what the rest of the function does.


https://github.com/llvm/llvm-project/pull/212340