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expr.c (expand_expr, [...]): Don't use gen_lowpart on non-integer modes.

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* expr.c (expand_expr, case VIEW_CONVERT_EXPR): Don't use
	gen_lowpart on non-integer modes.

From-SVN: r66430
This commit is contained in:
Richard Kenner 2003-05-03 14:30:07 +00:00 committed by Richard Kenner
parent ee9609391b
commit 13cf99ece0
2 changed files with 8 additions and 3 deletions
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gcc/ChangeLog
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@ -19,6 +19,9 @@
2003-05-03 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* expr.c (expand_expr, case VIEW_CONVERT_EXPR): Don't use
gen_lowpart on non-integer modes.
* stor-layout.c (place_field): When adjusting offset_align, use
desired_align, not DECL_ALIGN.

8
gcc/expr.c
View File

@ -7959,12 +7959,14 @@ expand_expr (exp, target, tmode, modifier)
op0 = expand_expr (TREE_OPERAND (exp, 0), NULL_RTX, mode, modifier);
/* If the input and output modes are both the same, we are done.
Otherwise, if neither mode is BLKmode and both are within a word, we
can use gen_lowpart. If neither is true, make sure the operand is
in memory and convert the MEM to the new mode. */
Otherwise, if neither mode is BLKmode and both are integral and within
a word, we can use gen_lowpart. If neither is true, make sure the
operand is in memory and convert the MEM to the new mode. */
if (TYPE_MODE (type) == GET_MODE (op0))
;
else if (TYPE_MODE (type) != BLKmode && GET_MODE (op0) != BLKmode
&& GET_MODE_CLASS (GET_MODE (op0)) == MODE_INT
&& GET_MODE_CLASS (TYPE_MODE (type)) == MODE_INT
&& GET_MODE_SIZE (TYPE_MODE (type)) <= UNITS_PER_WORD
&& GET_MODE_SIZE (GET_MODE (op0)) <= UNITS_PER_WORD)
op0 = gen_lowpart (TYPE_MODE (type), op0);