http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53385
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jakub at gcc dot gnu.org
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-05-18
08:17:42 UTC ---
Isn't this just a fancy way of saying
i = val ? clz_hwi (val) - 1 : HOST_BITS_PER_WIDE_INT;
? Note that the predicate ensures that the whole operand isn't 0,
so one might as well use just i = clzi_hwi (val) - 1; and just adjust the
else if (GET_CODE (x) == CONST_DOUBLE && i == 32)
test to compare i == 31 instead (and tweak the body not to i-- if the low hwi
is negative and do another clz_hwi otherwise).
