[clang] [llvm] [MIPS] Add support for O64 Mips ABI (PR #223990)

[Ying Huang via llvm-commits]

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@@ -48,22 +51,26 @@ ArrayRef<MCPhysReg> MipsABIInfo::getVarArgRegs(bool isGP64bit) const {
     else
       return ArrayRef(O32IntRegs);
   }
+  if (IsO64())
+    return ArrayRef(O64IntRegs);
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yingopq wrote:

Likewise. `llvm/test/CodeGen/Mips/cconv/arguments.ll`

https://github.com/llvm/llvm-project/pull/223990