diff options
Diffstat (limited to 'gcc/tree-vrp.c')
| -rw-r--r-- | gcc/tree-vrp.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/gcc/tree-vrp.c b/gcc/tree-vrp.c index 2b7d962..8e86b06 100644 --- a/gcc/tree-vrp.c +++ b/gcc/tree-vrp.c @@ -272,10 +272,13 @@ set_value_range (value_range *vr, enum value_range_type t, tree min, vr->max = max; /* Since updating the equivalence set involves deep copying the - bitmaps, only do it if absolutely necessary. */ + bitmaps, only do it if absolutely necessary. + + All equivalence bitmaps are allocated from the same obstack. So + we can use the obstack associated with EQUIV to allocate vr->equiv. */ if (vr->equiv == NULL && equiv != NULL) - vr->equiv = BITMAP_ALLOC (&vrp_equiv_obstack); + vr->equiv = BITMAP_ALLOC (equiv->obstack); if (equiv != vr->equiv) { @@ -8828,7 +8831,9 @@ vrp_intersect_ranges_1 (value_range *vr0, value_range *vr1) bitmap_ior_into (vr0->equiv, vr1->equiv); else if (vr1->equiv && !vr0->equiv) { - vr0->equiv = BITMAP_ALLOC (&vrp_equiv_obstack); + /* All equivalence bitmaps are allocated from the same obstack. So + we can use the obstack associated with VR to allocate vr0->equiv. */ + vr0->equiv = BITMAP_ALLOC (vr1->equiv->obstack); bitmap_copy (vr0->equiv, vr1->equiv); } } |