https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93447
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jakub at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The
# RANGE [-35, 0] NONZERO 4294967261
# d_5 = PHI <0(2), -35(3)>
_4 = d_5 != 0;
# RANGE [0, 1] NONZERO 1
_12 = (int) _4;
return _12;
to:
# RANGE [-35, 0] NONZERO 4294967261
# d_5 = PHI <0(2), -35(3)>
# RANGE [0, 1] NONZERO 1
# prephitmp_13 = PHI <0(2), 1(3)>
return prephitmp_13;
optimization is performed by PRE, which is enabled also for -Os, so not sure
why it doesn't trigger here.
Richard?
-O1 is a different thing, we intentionally don't enable various compile time or
memory expensive optimizations at that level.
