[Boolean Vector, patch 4/5] Use boolean vectors in VEC_COND_EXPR

[Ilya Enkovich]

Hi,

This patch forces boolean vector usage in VEC_COND_EXPR generated by 
vectorizer.  VEC_COND_EXPR expand is fixed appropriately.

Thanks,
Ilya
--
gcc/

2015-10-02  Ilya Enkovich  <enkovich....@gmail.com>

        * optabs.c (expand_vec_cond_expr): Accept boolean vector as
        condition operand.
        * tree-vect-stmts.c (vectorizable_condition): Use boolean
        vector type for vector comparison.


diff --git a/gcc/optabs.c b/gcc/optabs.c
index c49d66b..8d9d742 100644
--- a/gcc/optabs.c
+++ b/gcc/optabs.c
@@ -5365,16 +5365,17 @@ expand_vec_cond_expr (tree vec_cond_type, tree op0, 
tree op1, tree op2,
       op0a = TREE_OPERAND (op0, 0);
       op0b = TREE_OPERAND (op0, 1);
       tcode = TREE_CODE (op0);
+      unsignedp = TYPE_UNSIGNED (TREE_TYPE (op0a));
     }
   else
     {
       /* Fake op0 < 0.  */
-      gcc_assert (!TYPE_UNSIGNED (TREE_TYPE (op0)));
+      gcc_assert (VECTOR_BOOLEAN_TYPE_P (TREE_TYPE (op0)));
       op0a = op0;
       op0b = build_zero_cst (TREE_TYPE (op0));
       tcode = LT_EXPR;
+      unsignedp = false;
     }
-  unsignedp = TYPE_UNSIGNED (TREE_TYPE (op0a));
   cmp_op_mode = TYPE_MODE (TREE_TYPE (op0a));
 
 
diff --git a/gcc/tree-vect-stmts.c b/gcc/tree-vect-stmts.c
index 2ff2827..e93f5ef 100644
--- a/gcc/tree-vect-stmts.c
+++ b/gcc/tree-vect-stmts.c
@@ -7384,10 +7384,7 @@ vectorizable_condition (gimple *stmt, 
gimple_stmt_iterator *gsi,
           && TREE_CODE (else_clause) != FIXED_CST)
     return false;
 
-  unsigned int prec = GET_MODE_BITSIZE (TYPE_MODE (TREE_TYPE (vectype)));
-  /* The result of a vector comparison should be signed type.  */
-  tree cmp_type = build_nonstandard_integer_type (prec, 0);
-  vec_cmp_type = get_same_sized_vectype (cmp_type, vectype);
+  vec_cmp_type = build_same_sized_truth_vector_type (comp_vectype);
   if (vec_cmp_type == NULL_TREE)
     return false;