[compiler-rt] [compiler-rt] allow building with uefi (PR #131499)

[Tristan Ross via llvm-commits]

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@@ -49,7 +49,7 @@
 #define SYMBOL_NAME(name) XSTR(__USER_LABEL_PREFIX__) #name
 
 #if defined(__ELF__) || defined(__MINGW32__) || defined(__wasm__) ||           \
-    defined(_AIX)    || defined(__CYGWIN__)
+    defined(_AIX) || defined(__CYGWIN__) || defined(__UEFI__)
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RossComputerGuy wrote:

Yeah, I'm not sure either where's a good spot to put it. Probably is best on the safe side to put it along with the Windows one.

https://github.com/llvm/llvm-project/pull/131499