[clang] [clang] fix uefi target for aarch64 & x86_64 (PR #120632)

[Roland McGrath via cfe-commits]

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@@ -713,8 +713,8 @@ class LLVM_LIBRARY_VISIBILITY X86_64TargetInfo : public X86TargetInfo {
   X86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
       : X86TargetInfo(Triple, Opts) {
     const bool IsX32 = getTriple().isX32();
-    bool IsWinCOFF =
-        getTriple().isOSWindows() && getTriple().isOSBinFormatCOFF();
+    bool IsWinCOFF = (getTriple().isOSWindows() || getTriple().isUEFI()) &&
+                     getTriple().isOSBinFormatCOFF();
     LongWidth = LongAlign = PointerWidth = PointerAlign = IsX32 ? 32 : 64;
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frobtech wrote:

Note that some of these are things we'll eventually want command-line switch flexibility for. Matching Windows all around is the right default. But structurally, keep in mind that these are no things intrinsic to the UEFI target per se but to a particular set of C/C++ API expectations that future users (i.e. me) will want to have the option of configuring to be consistent with other norms rather than Windows norms.

https://github.com/llvm/llvm-project/pull/120632