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* fold-const.c (make_range): Do not widen the type of the expression.

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From-SVN: r20545
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Jeffrey A Law 1998-06-17 17:54:27 +00:00 committed by Jeff Law
parent b74390dec9
commit 7d12cee1f1
2 changed files with 8 additions and 0 deletions
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gcc/ChangeLog
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@ -65,6 +65,8 @@ Wed Jun 17 15:57:48 EDT 1998 Andrew MacLeod (amacleod@cygnus.com)
Wed Jun 17 08:38:13 1998 Jeffrey A Law (law@cygnus.com)
* fold-const.c (make_range): Do not widen the type of the expression.
* expr.c (check_max_integer_computation_mode): New function.
(expand_expr): Avoid integer computations in modes wider than
MAX_INTEGER_COMPUTATION_MODE.

6
gcc/fold-const.c
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@ -2821,6 +2821,7 @@ make_range (exp, pin_p, plow, phigh)
{
enum tree_code code;
tree arg0, arg1, type = NULL_TREE;
tree orig_type = NULL_TREE;
int in_p, n_in_p;
tree low, high, n_low, n_high;
@ -2958,6 +2959,11 @@ make_range (exp, pin_p, plow, phigh)
continue;
case NOP_EXPR: case NON_LVALUE_EXPR: case CONVERT_EXPR:
if (orig_type == NULL_TREE)
orig_type = type;
if (TYPE_PRECISION (type) > TYPE_PRECISION (orig_type))
break;
if (! INTEGRAL_TYPE_P (type)
|| (low != 0 && ! int_fits_type_p (low, type))
|| (high != 0 && ! int_fits_type_p (high, type)))