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| author | Richard Guenther <rguenther@suse.de> | 2010-07-02 12:28:54 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2010-07-02 12:28:54 +0000 |
| commit | fca821b51c6cf7367d78251644e39ee370eb38c3 (patch) | |
| tree | 6bb5539ceb91a17458bf33d67d2ef2edaf93e5b0 /gcc/tree-vrp.c | |
| parent | 8198d5418158d397b73f13aa709d29b209761417 (diff) | |
| download | gcc-fca821b51c6cf7367d78251644e39ee370eb38c3.zip gcc-fca821b51c6cf7367d78251644e39ee370eb38c3.tar.gz gcc-fca821b51c6cf7367d78251644e39ee370eb38c3.tar.bz2 | |
tree-ssa-structalias.c (find_func_aliases): Handle pointer alignment via BIT_AND_EXPR.
2010-07-02 Richard Guenther <rguenther@suse.de>
* tree-ssa-structalias.c (find_func_aliases): Handle
pointer alignment via BIT_AND_EXPR.
* tree-vrp.c (extract_range_from_binary_expr): Likewise.
From-SVN: r161707
Diffstat (limited to 'gcc/tree-vrp.c')
| -rw-r--r-- | gcc/tree-vrp.c | 31 |
1 files changed, 23 insertions, 8 deletions
diff --git a/gcc/tree-vrp.c b/gcc/tree-vrp.c index 4f5db80..74b3a7a 100644 --- a/gcc/tree-vrp.c +++ b/gcc/tree-vrp.c @@ -2188,15 +2188,30 @@ extract_range_from_binary_expr (value_range_t *vr, return; } - gcc_assert (code == POINTER_PLUS_EXPR); - /* For pointer types, we are really only interested in asserting - whether the expression evaluates to non-NULL. */ - if (range_is_nonnull (&vr0) || range_is_nonnull (&vr1)) - set_value_range_to_nonnull (vr, expr_type); - else if (range_is_null (&vr0) && range_is_null (&vr1)) - set_value_range_to_null (vr, expr_type); + if (code == POINTER_PLUS_EXPR) + { + /* For pointer types, we are really only interested in asserting + whether the expression evaluates to non-NULL. */ + if (range_is_nonnull (&vr0) || range_is_nonnull (&vr1)) + set_value_range_to_nonnull (vr, expr_type); + else if (range_is_null (&vr0) && range_is_null (&vr1)) + set_value_range_to_null (vr, expr_type); + else + set_value_range_to_varying (vr); + } + else if (code == BIT_AND_EXPR) + { + /* For pointer types, we are really only interested in asserting + whether the expression evaluates to non-NULL. */ + if (range_is_nonnull (&vr0) && range_is_nonnull (&vr1)) + set_value_range_to_nonnull (vr, expr_type); + else if (range_is_null (&vr0) || range_is_null (&vr1)) + set_value_range_to_null (vr, expr_type); + else + set_value_range_to_varying (vr); + } else - set_value_range_to_varying (vr); + gcc_unreachable (); return; } |