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expr.c (expand_expr_real_1, [...]): Properly handle REDUCE_BIT_FIELD by applying it to result, not input, of conversion. 

* expr.c (expand_expr_real_1, case NOP_EXPR): Properly handle
	REDUCE_BIT_FIELD by applying it to result, not input, of conversion.

From-SVN: r91498
This commit is contained in:
Richard Kenner 2004-11-30 00:01:45 +00:00 committed by Richard Kenner
parent 0d0a093554
commit 7acda55251
2 changed files with 25 additions and 17 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2004-11-30 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* expr.c (expand_expr_real_1, case NOP_EXPR): Properly handle
REDUCE_BIT_FIELD by applying it to result, not input, of conversion.
2004-11-30 Ben Elliston <bje@au.ibm.com>
* Makefile.in (REGS_H): Depend on $(BASIC_BLOCK_H).

37
gcc/expr.c
View File

@ -7241,36 +7241,39 @@ expand_expr_real_1 (tree exp, rtx target, enum machine_mode tmode,
}
op0 = expand_expr (TREE_OPERAND (exp, 0), NULL_RTX, mode, modifier);
op0 = REDUCE_BIT_FIELD (op0);
if (GET_MODE (op0) == mode)
return op0;
;
/* If OP0 is a constant, just convert it into the proper mode. */
if (CONSTANT_P (op0))
else if (CONSTANT_P (op0))
{
tree inner_type = TREE_TYPE (TREE_OPERAND (exp, 0));
enum machine_mode inner_mode = TYPE_MODE (inner_type);
if (modifier == EXPAND_INITIALIZER)
return simplify_gen_subreg (mode, op0, inner_mode,
subreg_lowpart_offset (mode,
inner_mode));
op0 = simplify_gen_subreg (mode, op0, inner_mode,
subreg_lowpart_offset (mode,
inner_mode));
else
return convert_modes (mode, inner_mode, op0,
TYPE_UNSIGNED (inner_type));
op0= convert_modes (mode, inner_mode, op0,
TYPE_UNSIGNED (inner_type));
}
if (modifier == EXPAND_INITIALIZER)
return gen_rtx_fmt_e (unsignedp ? ZERO_EXTEND : SIGN_EXTEND, mode, op0);
else if (modifier == EXPAND_INITIALIZER)
op0 = gen_rtx_fmt_e (unsignedp ? ZERO_EXTEND : SIGN_EXTEND, mode, op0);
if (target == 0)
return
convert_to_mode (mode, op0,
TYPE_UNSIGNED (TREE_TYPE (TREE_OPERAND (exp, 0))));
else if (target == 0)
op0 = convert_to_mode (mode, op0,
TYPE_UNSIGNED (TREE_TYPE
(TREE_OPERAND (exp, 0))));
else
convert_move (target, op0,
TYPE_UNSIGNED (TREE_TYPE (TREE_OPERAND (exp, 0))));
return target;
{
convert_move (target, op0,
TYPE_UNSIGNED (TREE_TYPE (TREE_OPERAND (exp, 0))));
op0 = target;
}
return REDUCE_BIT_FIELD (op0);
case VIEW_CONVERT_EXPR:
op0 = expand_expr (TREE_OPERAND (exp, 0), NULL_RTX, mode, modifier);