(do_jump, case BIT_AND_EXPR): Only narrow to a type that corresponds

to a mode.

From-SVN: r7580

diff --git a/gcc/expr.c b/gcc/expr.c
index 2e0f5ef9013a41e6c36f7f1f926cdc6f31579236..46be1f32acfb42155f7d19455e057e56159ab182 100644 (file)
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -8364,6 +8364,7 @@ do_jump (exp, if_false_label, if_true_label)
   rtx comparison = 0;
   int i;
   tree type;
+  enum machine_mode mode;
 
   emit_queue ();
 
@@ -8440,7 +8441,8 @@ do_jump (exp, if_false_label, if_true_label)
          && TREE_CODE (TREE_OPERAND (exp, 1)) == INTEGER_CST
          && TYPE_PRECISION (TREE_TYPE (exp)) <= HOST_BITS_PER_WIDE_INT
          && (i = floor_log2 (TREE_INT_CST_LOW (TREE_OPERAND (exp, 1)))) >= 0
-         && (type = type_for_size (i + 1, 1)) != 0
+         && (mode = mode_for_size (i + 1, MODE_INT, 0)) != BLKmode
+         && (type = type_for_mode (mode, 1)) != 0
          && TYPE_PRECISION (type) < TYPE_PRECISION (TREE_TYPE (exp))
          && (cmp_optab->handlers[(int) TYPE_MODE (type)].insn_code
              != CODE_FOR_nothing))