https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79981
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 40942
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40942&action=edit
gcc7-pr79981.patch
Untested fix.
With this patch the vrp1 difference is:
_8 = ATOMIC_COMPARE_EXCHANGE (lock_4(D), 0, 1, 260, 2, 0);
- # RANGE [0, 4294967295]
+ # RANGE [0, 1] NONZERO 1
_9 = IMAGPART_EXPR <_8>;
# RANGE [0, 1]
_1 = (_Bool) _9;
- if (_1 != 0)
+ if (_9 != 0)
