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expr.c (do_store_flag): Pass in the correct result type when calling fold_single_bit_test. 

* expr.c (do_store_flag): Pass in the correct result type
        when calling fold_single_bit_test.
        * fold-const.c (fold_single_bit_test): Use result_type for the
        result when folding a sign bit test.

From-SVN: r68940
This commit is contained in:
Jeff Law 2003-07-04 16:00:19 -06:00 committed by Jeff Law
parent 5e14ae7e26
commit 60cd4daea2
3 changed files with 14 additions and 4 deletions
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7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2003-07-04 Jeff Law <law@redhat.com>
* expr.c (do_store_flag): Pass in the correct result type
when calling fold_single_bit_test.
* fold-const.c (fold_single_bit_test): Use result_type for the
result when folding a sign bit test.
2003-07-04 Neil Booth <neil@daikokuya.co.uk>
* opts.c (common_handle_options): Negate sense of -falign- switches.

9
gcc/expr.c
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@ -9998,9 +9998,12 @@ do_store_flag (tree exp, rtx target, enum machine_mode mode, int only_cheap)
if ((code == NE || code == EQ)
&& TREE_CODE (arg0) == BIT_AND_EXPR && integer_zerop (arg1)
&& integer_pow2p (TREE_OPERAND (arg0, 1)))
return expand_expr (fold_single_bit_test (code == NE ? NE_EXPR : EQ_EXPR,
arg0, arg1, type),
target, VOIDmode, EXPAND_NORMAL);
{
tree type = (*lang_hooks.types.type_for_mode) (mode, unsignedp);
return expand_expr (fold_single_bit_test (code == NE ? NE_EXPR : EQ_EXPR,
arg0, arg1, type),
target, VOIDmode, EXPAND_NORMAL);
}
/* Now see if we are likely to be able to do this. Return if not. */
if (! can_compare_p (code, operand_mode, ccp_store_flag))

2
gcc/fold-const.c
View File

@ -4825,7 +4825,7 @@ fold_single_bit_test (code, arg0, arg1, result_type)
if (arg00 != NULL_TREE)
{
tree stype = (*lang_hooks.types.signed_type) (TREE_TYPE (arg00));
return fold (build (code == EQ_EXPR ? GE_EXPR : LT_EXPR, type,
return fold (build (code == EQ_EXPR ? GE_EXPR : LT_EXPR, result_type,
convert (stype, arg00),
convert (stype, integer_zero_node)));
}