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| author | Eric Botcazou <ebotcazou@adacore.com> | 2019-02-28 23:03:01 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2019-02-28 23:03:01 +0000 |
| commit | 85222504cc447607d81183e77a6c450351c20ff7 (patch) | |
| tree | a47b6dff799264fcfcaf4a9c9332dee53fd5023c /gcc/tree-ssa-dom.c | |
| parent | cc284d9cf738f0efd4dedd42476da8372d6a38d6 (diff) | |
re PR tree-optimization/89536 (wrong code at -Os and above on x86_64-linux-gnu)
PR tree-optimization/89536
* tree-ssa-dom.c (edge_info::derive_equivalences) <BIT_NOT_EXPR>: Test
only whether bit #0 of the value is 0 instead of the entire value.
From-SVN: r269289
Diffstat (limited to 'gcc/tree-ssa-dom.c')
| -rw-r--r-- | gcc/tree-ssa-dom.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/tree-ssa-dom.c b/gcc/tree-ssa-dom.c index 4f4b7db2189..aa4e24bc358 100644 --- a/gcc/tree-ssa-dom.c +++ b/gcc/tree-ssa-dom.c @@ -348,7 +348,7 @@ edge_info::derive_equivalences (tree name, tree value, int recursion_limit) && TREE_CODE (rhs) == SSA_NAME && ssa_name_has_boolean_range (rhs)) { - if (integer_zerop (value)) + if ((TREE_INT_CST_LOW (value) & 1) == 0) res = build_one_cst (TREE_TYPE (rhs)); else res = build_zero_cst (TREE_TYPE (rhs)); |