[PowerPC] Fix SSE translation on FreeBSD

[pkubaj]

Summary

Fix for https://github.com/llvm/llvm-project/issues/53085

[qiucf]

Thanks for the fix!

clang/lib/Headers/ppc_wrappers/mm_malloc.h

22

Actually I just realised we don't need this guard, Clang already has a hack for this: previous declaration in system header has throw () but later doesn't is okay.

See x86's header https://github.com/llvm/llvm-project/blob/510710d0374908e3e2bd37f9a32065da423a7e4c/clang/lib/Headers/mm_malloc.h#L21-L25 .

I tested on Linux.

[pkubaj]

Address review.

[qiucf]

LGTM

[pkubaj]

Since I'm not a LLVM committer, can you commit it and merge to 14 branch?

[qiucf]

In D117972#3287553, @pkubaj wrote:

Since I'm not a LLVM committer, can you commit it and merge to 14 branch?

Sure. Sorry for late response, I'm on vacation these days.

clang/lib/Headers/ppc_wrappers/mm_malloc.h

 
 #include <stdlib.h>
 
 /* We can't depend on <stdlib.h> since the prototype of posix_memalign
    may not be visible.  */
 #ifndef __cplusplus
 extern int posix_memalign (void **, size_t, size_t);
 #else
-extern "C" int posix_memalign (void **, size_t, size_t) throw ();
+extern "C" int posix_memalign (void **, size_t, size_t);
 #endif
 
 static __inline void *
 _mm_malloc (size_t size, size_t alignment)
 {
   /* PowerPC64 ELF V2 ABI requires quadword alignment.  */
   size_t vec_align = sizeof (__vector float);
   void *ptr;