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

[Kishan Parmar via cfe-commits]

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@@ -486,7 +486,8 @@ std::unique_ptr<TargetCodeGenInfo>
 createAIXTargetCodeGenInfo(CodeGenModule &CGM, bool Is64Bit);
 
 std::unique_ptr<TargetCodeGenInfo>
-createPPC32TargetCodeGenInfo(CodeGenModule &CGM, bool SoftFloatABI);
+createPPC32TargetCodeGenInfo(CodeGenModule &CGM, bool SoftFloatABI,
+                             unsigned RLen);
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Long5hot wrote:

I was not sure about hardcoding Register Width(RLen) **"32"** for RLen here.. https://github.com/llvm/llvm-project/pull/77732/files#diff-05339beb4a6cf7efdfc537984255dd372dcf1edd2d00eabed25831da4d1d0a9fR276

So i used similiar approach like, how RISC-V does to calculate Register Width here.
PPC : https://github.com/llvm/llvm-project/pull/77732/files#diff-e724febedab9c1a2832bf2056d208ff02ddcb2e6f90b5a653afc9b19ac78a5d7R187
RISCV : https://github.com/llvm/llvm-project/pull/77732/files#diff-e724febedab9c1a2832bf2056d208ff02ddcb2e6f90b5a653afc9b19ac78a5d7L226

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