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

[Ying Huang via llvm-commits]

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@@ -36,6 +37,8 @@ static const MCPhysReg Mips64IntRegs[8] = {
 ArrayRef<MCPhysReg> MipsABIInfo::GetByValArgRegs() const {
   if (IsO32())
     return ArrayRef(O32IntRegs);
+  if (IsO64())
+    return ArrayRef(O64IntRegs);
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yingopq wrote:

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

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