diff options
| author | dnovillo <dnovillo@138bc75d-0d04-0410-961f-82ee72b054a4> | 2005-10-02 20:15:55 +0000 |
|---|---|---|
| committer | dnovillo <dnovillo@138bc75d-0d04-0410-961f-82ee72b054a4> | 2005-10-02 20:15:55 +0000 |
| commit | 0cc06088adc97d6ca9e66489d8a23397fa86f80c (patch) | |
| tree | 03e110a82bcb3ef30244905ac0866fc09e18c916 /gcc/tree-vrp.c | |
| parent | 7e58afa1fccd88427cb22c4b94cffc49a30ea95c (diff) | |
| download | gcc-0cc06088adc97d6ca9e66489d8a23397fa86f80c.tar.gz | |
PR 24142
* tree-vrp.c (vrp_meet): Fix call to range_includes_zero_p in
case of anti-ranges.
testsuite/
PR 24142
* gcc.c-torture/execute/pr24142.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@104874 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-vrp.c')
| -rw-r--r-- | gcc/tree-vrp.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/gcc/tree-vrp.c b/gcc/tree-vrp.c index de7a931cb15..7d7e0c9e9c3 100644 --- a/gcc/tree-vrp.c +++ b/gcc/tree-vrp.c @@ -3454,11 +3454,15 @@ vrp_meet (value_range_t *vr0, value_range_t *vr1) no_meet: /* The two range VR0 and VR1 do not meet. Before giving up and setting the result to VARYING, see if we can at least derive a - useful anti-range. */ + useful anti-range. FIXME, all this nonsense about distinguishing + anti-ranges from ranges is necessary because of the odd + semantics of range_includes_zero_p and friends. */ if (!symbolic_range_p (vr0) - && !range_includes_zero_p (vr0) + && ((vr0->type == VR_RANGE && !range_includes_zero_p (vr0)) + || (vr0->type == VR_ANTI_RANGE && range_includes_zero_p (vr0))) && !symbolic_range_p (vr1) - && !range_includes_zero_p (vr1)) + && ((vr1->type == VR_RANGE && !range_includes_zero_p (vr1)) + || (vr1->type == VR_ANTI_RANGE && range_includes_zero_p (vr1)))) { set_value_range_to_nonnull (vr0, TREE_TYPE (vr0->min)); |