diff options
Diffstat (limited to 'gcc/tree-ssa-tail-merge.c')
| -rw-r--r-- | gcc/tree-ssa-tail-merge.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/gcc/tree-ssa-tail-merge.c b/gcc/tree-ssa-tail-merge.c index ca69b23..c97da97 100644 --- a/gcc/tree-ssa-tail-merge.c +++ b/gcc/tree-ssa-tail-merge.c @@ -1142,8 +1142,17 @@ gimple_equal_p (same_succ same_succ, gimple s1, gimple s2) lhs2 = gimple_get_lhs (s2); if (TREE_CODE (lhs1) != SSA_NAME && TREE_CODE (lhs2) != SSA_NAME) - return (vn_valueize (gimple_vdef (s1)) - == vn_valueize (gimple_vdef (s2))); + { + /* If the vdef is the same, it's the same statement. */ + if (vn_valueize (gimple_vdef (s1)) + == vn_valueize (gimple_vdef (s2))) + return true; + + /* Test for structural equality. */ + return (operand_equal_p (lhs1, lhs2, 0) + && gimple_operand_equal_value_p (gimple_assign_rhs1 (s1), + gimple_assign_rhs1 (s2))); + } else if (TREE_CODE (lhs1) == SSA_NAME && TREE_CODE (lhs2) == SSA_NAME) return vn_valueize (lhs1) == vn_valueize (lhs2); |