Gimplify vec_cond_expr with condition inside

  PR middle-end/70240
  PR middle-end/68215
  PR tree-opt/68714
  * gimplify.c (gimplify_expr) [VEC_COND_EXPR]: Gimplify the
  first operand as is_gimple_condexpr.

Co-Authored-By: Richard Biener <rguenther@suse.de>

From-SVN: r234271

gcc/ChangeLog

 2016-03-16  Richard Henderson  <rth@redhat.com>
+	    Richard Biener  <rguenth@suse.de>
+
+	PR middle-end/70240
+	PR middle-end/68215
+	PR tree-opt/68714
+	* gimplify.c (gimplify_expr) [VEC_COND_EXPR]: Gimplify the
+	first operand as is_gimple_condexpr.
+
+2016-03-16  Richard Henderson  <rth@redhat.com>
 
 	PR target/70048
 	* config/aarch64/aarch64.c (virt_or_elim_regno_p): New.

gcc/gimplify.c

@@ -10799,8 +10799,23 @@ gimplify_expr (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p,
 	    goto expr_2;
 	  }
 
-	case FMA_EXPR:
 	case VEC_COND_EXPR:
+	  {
+	    enum gimplify_status r0, r1, r2;
+
+	    r0 = gimplify_expr (&TREE_OPERAND (*expr_p, 0), pre_p,
+				post_p, is_gimple_condexpr, fb_rvalue);
+	    r1 = gimplify_expr (&TREE_OPERAND (*expr_p, 1), pre_p,
+				post_p, is_gimple_val, fb_rvalue);
+	    r2 = gimplify_expr (&TREE_OPERAND (*expr_p, 2), pre_p,
+				post_p, is_gimple_val, fb_rvalue);
+
+	    ret = MIN (MIN (r0, r1), r2);
+	    recalculate_side_effects (*expr_p);
+	  }
+	  break;
+
+	case FMA_EXPR:
 	case VEC_PERM_EXPR:
 	  /* Classified as tcc_expression.  */
 	  goto expr_3;