[clang] [llvm] [clang][uefi] add arm, aarch64, x86, loongarch64, riscv64 targets (PR #136247)

[Tristan Ross via llvm-commits]

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@@ -352,6 +352,8 @@ static MCAsmInfo *createAArch64MCAsmInfo(const MCRegisterInfo &MRI,
     MAI = new AArch64MCAsmInfoMicrosoftCOFF();
   else if (TheTriple.isOSBinFormatCOFF())
     MAI = new AArch64MCAsmInfoGNUCOFF();
+  else if (TheTriple.isUEFI())
+    MAI = new AArch64MCAsmInfoGNUCOFF();
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RossComputerGuy wrote:

Oh, why does x86 use it?
https://github.com/llvm/llvm-project/blob/ee4c8b556c5cf42c55ce9540bbb0e29c11894a71/llvm/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp#L455-L456

Is it because of the win64 calling convention?

https://github.com/llvm/llvm-project/pull/136247