[clang] [ARM64EC] Fix compilation of intrin.h in ARM64EC mode. (PR #87717)

[Max Winkler via cfe-commits]

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@@ -413,6 +413,7 @@ static __inline__ void __DEFAULT_FN_ATTRS
 __writecr3(unsigned __INTPTR_TYPE__ __cr3_val) {
   __asm__ ("mov {%0, %%cr3|cr3, %0}" : : "r"(__cr3_val) : "memory");
 }
+#endif
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MaxEW707 wrote:

Nice catch. We should probably also ifdef these function declarations near the top of this file.

https://github.com/llvm/llvm-project/blob/main/clang/lib/Headers/intrin.h#L96
https://github.com/llvm/llvm-project/blob/main/clang/lib/Headers/intrin.h#L126

https://github.com/llvm/llvm-project/pull/87717