[PATCH] D131594: WORK IN PROGRESS Add Clang UEFI target to support "x86_64-unknown-uefi" triple

Tue Oct 18 15:10:06 PDT 2022

phosek added inline comments.

================
Comment at: clang/lib/Basic/Targets/X86.h:812-828
+    case CC_X86StdCall:
+    case CC_X86ThisCall:
+    case CC_X86FastCall:
+      return CCCR_Ignore;
+    case CC_C:
+    case CC_X86VectorCall:
+    case CC_IntelOclBicc:
----------------
According to https://wiki.osdev.org/UEFI#Calling_Conventions, only cdecl, Microsoft's 64-bit calling convention and ARM SMC are supported for UEFI. This would translate to `CC_C` and `CC_Win64` (I'm not sure if SMC is supported by Clang, it doesn't appear to be).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D131594/new/

https://reviews.llvm.org/D131594