[libc-commits] [libc] [libc] introduce shared compiler-rt builtins (PR #200094)

[Jeff Bailey via libc-commits]

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@@ -9,6 +9,12 @@
 #ifndef LLVM_LIBC_MACROS_FLOAT_MACROS_H
 #define LLVM_LIBC_MACROS_FLOAT_MACROS_H
 
+// __has_builtin is a Clang extension; GCC < 10 doesn't define it, which
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kaladron wrote:

This doesn't come up again in the PR.  Where is it used?

https://github.com/llvm/llvm-project/pull/200094