http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48084
--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> 2011-03-12 04:04:49 UTC --- Another one: [hjl@gnu-6 ilp32-31]$ cat f.i void _mm_clflush (void const *__A) { __builtin_ia32_clflush (__A); } [hjl@gnu-6 ilp32-31]$ /export/build/gnu/gcc-x32/build-x86_64-linux/gcc/xgcc -B/export/build/gnu/gcc-x32/build-x86_64-linux/gcc/ -S -mx32 f.i -msse2 f.i: In function \u2018_mm_clflush\u2019: f.i:4:26: internal compiler error: in copy_to_mode_reg, at explow.c:630 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. [hjl@gnu-6 ilp32-31]$