http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52695
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org,
| |torvald at gcc dot gnu.org
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-03-24
10:57:29 UTC ---
Looks like a bug in libitm/config/x86/target.h:
// We'll be using some of the cpu builtins, and their associated types.
#ifndef __cplusplus
/* ??? It's broken for C++. */
#include <x86intrin.h>
#else
# ifdef __SSE2__
# include <emmintrin.h>
# elif defined(__SSE__)
# include <xmmintrin.h>
# endif
# ifdef __AVX__
# include <immintrin.h>
# endif
#endif
No idea what "brokeness" the above talks about, it works just fine for me in
C++, so IMHO it just should always include x86intrin.h, but certainly if
__MMX__ is defined, but no __SSE__, the above won't include in C++ any header
which would define __m64.