[Bug middle-end/40106] [4.4/4.5 Regression] Weird interaction between optimize_insn_for_speed_p and -funsafe-math-optimizations
dominiq at lps dot ens dot fr
gcc-bugzilla@gcc.gnu.org
Sat Mar 20 13:03:00 GMT 2010
------- Comment #50 from dominiq at lps dot ens dot fr 2010-03-20 13:02 -------
> optimize_insn_for_speed_p is more precise in that it allows hot functions
> to be optimized for speed even with -Os. This is quite important for
> embedded targets where you generally want to optimize for size but want
> performance sensitive parts to be optimized for speed.
If so, should not
return optimize_function_for_size_p (cfun) || !crtl->maybe_hot_insn_p;
be
return optimize_function_for_size_p (cfun) && !crtl->maybe_hot_insn_p;
i.e., true only if optimize_function_for_size_p is true AND
crtl->maybe_hot_insn_p false?
In the same line, should not
bool
optimize_function_for_size_p (struct function *fun)
{
return (optimize_size
|| (fun && (fun->function_frequency
== FUNCTION_FREQUENCY_UNLIKELY_EXECUTED)));
}
be
bool
optimize_function_for_size_p (struct function *fun)
{
return (optimize_size
&& (fun && (fun->function_frequency
== FUNCTION_FREQUENCY_UNLIKELY_EXECUTED)));
}
?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40106
More information about the Gcc-bugs
mailing list