https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115370
Hongyu Wang <hongyuw at gcc dot gnu.org> changed:
What |Removed |Added
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Target| |x86_64-*-*, i?86-*-*
--- Comment #1 from Hongyu Wang <hongyuw at gcc dot gnu.org> ---
The issue was in cfgexpand.cc:2648
/* If jumps are cheap and the target does not support conditional
compare, turn some more codes into jumpy sequences. */
else if (BRANCH_COST (optimize_insn_for_speed_p (), false) < 4
&& targetm.gen_ccmp_first == NULL)
{
Now in x86 we defined targetm.gen_ccmp_first, but it doesn't mean ccmp is
enabled by default as it requires -mapxf.
Guess we need a new target hook have_ccmp.
