diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 790662511d1..6f9c6a5f906 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +2016-01-14 Jeff Law + + PR tree-optimization/69270 + * tree-ssa-dom.c (ssa_name_has_boolean_range): If the type has a + single bit of precision, verify it's also unsigned. + (record_edge_info): Use constant_boolean_node rather than fold_convert + to convert boolean_true/boolean_false to the right type. + 2016-01-14 Richard Henderson PR rtl-opt/69014 diff --git a/gcc/tree-ssa-dom.c b/gcc/tree-ssa-dom.c index da4faca9cf8..f2257b33dd3 100644 --- a/gcc/tree-ssa-dom.c +++ b/gcc/tree-ssa-dom.c @@ -319,8 +319,8 @@ record_conditions (struct edge_info *edge_info, tree cond, tree inverted) /* Return TRUE is OP, an SSA_NAME has a range of values [0..1], false otherwise. - This can be because it is a boolean type, any type with - a single bit of precision, or has known range of [0..1] + This can be because it is a boolean type, any unsigned integral + type with a single bit of precision, or has known range of [0..1] via VRP analysis. */ static bool @@ -332,6 +332,7 @@ ssa_name_has_boolean_range (tree op) /* An integral type with a single bit of precision. */ if (INTEGRAL_TYPE_P (TREE_TYPE (op)) + && TYPE_UNSIGNED (TREE_TYPE (op)) && TYPE_PRECISION (TREE_TYPE (op)) == 1) return true; @@ -425,10 +426,9 @@ record_edge_info (basic_block bb) && ssa_name_has_boolean_range (op0) && is_gimple_min_invariant (op1)) { - tree true_val = fold_convert (TREE_TYPE (op0), - boolean_true_node); - tree false_val = fold_convert (TREE_TYPE (op0), - boolean_false_node); + tree true_val = constant_boolean_node (true, TREE_TYPE (op0)); + tree false_val = constant_boolean_node (false, TREE_TYPE (op0)); + if (code == EQ_EXPR) { edge_info = allocate_edge_info (true_edge);