[Bug rtl-optimization/55177] missed optimizations with __builtin_bswap

[ebotcazou at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55177



--- Comment #8 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2012-11-08 
16:14:23 UTC ---

> I think I have the GCC version checks right there, for the availability of the

> builtins? That is, __builtin_bswap32() and __builtin_bswap64() since GCC 4.4,

> and __builtin_bswap16() since GCC 4.6 on PowerPC or GCC 4.9 on other 
> platforms?



4.8 on other platforms.