Here a minor "bug": http://gcc.gnu.org/onlinedocs/gcc-4.0.1/gcc/X86-Built_002din-Functions.html#X86-Built_002din-Functions does _not_ contain documentation for SSE2 X86 Built-in Functions
-- Summary: missing documentation for sse2 built-in functions Product: gcc Version: 4.0.1 Status: UNCONFIRMED Severity: minor Priority: P2 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: Pferdebert at west dot de CC: gcc-bugs at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23218