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

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to a mode.

From-SVN: r7580
This commit is contained in:
Richard Kenner 1994-06-28 05:44:57 -04:00
parent 127b0efcf7
commit 2f6e6d22ea
1 changed files with 3 additions and 1 deletions
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4
gcc/expr.c
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@ -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))