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spu.h (CANNOT_CHANGE_MODE_CLASS): Allow (multi)word-sized SUBREG of multi-word hard register.

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* config/spu/spu.h (CANNOT_CHANGE_MODE_CLASS): Allow (multi)word-sized
	SUBREG of multi-word hard register.
	* config/spu/spu.c (valid_subreg): Likewise.
	(adjust_operand): Handle SUBREGs of multi-word hard registers.

From-SVN: r138711
This commit is contained in:
Ulrich Weigand 2008-08-05 13:53:20 +00:00 • committed by Ulrich Weigand
parent 21f560ba8e
commit 9e071d06df
3 changed files with 14 additions and 3 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2008-08-05 Ulrich Weigand <Ulrich.Weigand@de.ibm.com>
* config/spu/spu.h (CANNOT_CHANGE_MODE_CLASS): Allow (multi)word-sized
SUBREG of multi-word hard register.
* config/spu/spu.c (valid_subreg): Likewise.
(adjust_operand): Handle SUBREGs of multi-word hard registers.
2008-08-04 Richard Guenther <rguenther@suse.de>
* tree-ssa-loop-ivopts.c (add_iv_value_candidates): Also add

9
gcc/config/spu/spu.c
View file

@ -419,7 +419,8 @@ valid_subreg (rtx op)
enum machine_mode im = GET_MODE (SUBREG_REG (op));
return om != VOIDmode && im != VOIDmode
&& (GET_MODE_SIZE (im) == GET_MODE_SIZE (om)
|| (GET_MODE_SIZE (im) <= 4 && GET_MODE_SIZE (om) <= 4));
|| (GET_MODE_SIZE (im) <= 4 && GET_MODE_SIZE (om) <= 4)
|| (GET_MODE_SIZE (im) >= 16 && GET_MODE_SIZE (om) >= 16));
}
/* When insv and ext[sz]v ar passed a TI SUBREG, we want to strip it off
@ -429,8 +430,10 @@ adjust_operand (rtx op, HOST_WIDE_INT * start)
{
enum machine_mode mode;
int op_size;
/* Strip any SUBREG */
if (GET_CODE (op) == SUBREG)
/* Strip any paradoxical SUBREG. */
if (GET_CODE (op) == SUBREG
&& (GET_MODE_BITSIZE (GET_MODE (op))
> GET_MODE_BITSIZE (GET_MODE (SUBREG_REG (op)))))
{
if (start)
*start -=

1
gcc/config/spu/spu.h
View file

@ -263,6 +263,7 @@ enum reg_class {
only true for SPU. */
#define CANNOT_CHANGE_MODE_CLASS(FROM, TO, CLASS) \
((GET_MODE_SIZE (FROM) > 4 || GET_MODE_SIZE (TO) > 4) \
&& (GET_MODE_SIZE (FROM) < 16 || GET_MODE_SIZE (TO) < 16) \
&& GET_MODE_SIZE (FROM) != GET_MODE_SIZE (TO))
#define REGISTER_TARGET_PRAGMAS() do { \