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s390.md (reload_insi, [...]): Change mode of scratch register to DImode / TImode. 

* config/s390/s390.md (reload_insi, reload_indi): Change mode of
	scratch register to DImode / TImode.
	config/s390/s390.c (s390_expand_plus_operand): Make sure scratch
	register used does not overlap the target.

From-SVN: r50652
This commit is contained in:
Ulrich Weigand 2002-03-12 14:32:37 +00:00 committed by Ulrich Weigand
parent acf8bc2567
commit 6a4e49c11d
3 changed files with 24 additions and 10 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,10 @@
2002-03-12 Ulrich Weigand <uweigand@de.ibm.com>
* config/s390/s390.md (reload_insi, reload_indi): Change mode of
scratch register to DImode / TImode.
config/s390/s390.c (s390_expand_plus_operand): Make sure scratch
register used does not overlap the target.
2002-03-12 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
* Makefile.in (debug.o): Depend on debug.h.
@ -76,8 +83,6 @@
* alias.c (record_component_aliases): Record aliases for base
classes too.
2002-03-11 Ulrich Weigand <uweigand@de.ibm.com>
* config/s390/s390.h (REG_ALLOC_ORDER): Add missing register.
2002-03-11 Douglas B Rupp <rupp@gnat.com>

19
gcc/config/s390/s390.c
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@ -1,5 +1,5 @@
/* Subroutines used for code generation on IBM S/390 and zSeries
Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
Contributed by Hartmut Penner (hpenner@de.ibm.com) and
Ulrich Weigand (uweigand@de.ibm.com).
@ -1169,14 +1169,23 @@ s390_plus_operand (op, mode)
SCRATCH may be used as scratch register. */
void
s390_expand_plus_operand (target, src, scratch)
s390_expand_plus_operand (target, src, scratch_in)
register rtx target;
register rtx src;
register rtx scratch;
register rtx scratch_in;
{
/* src must be a PLUS; get its two operands. */
rtx sum1, sum2;
rtx sum1, sum2, scratch;
/* ??? reload apparently does not ensure that the scratch register
and the target do not overlap. We absolutely require this to be
the case, however. Therefore the reload_in[sd]i patterns ask for
a double-sized scratch register, and if one part happens to be
equal to the target, we use the other one. */
scratch = gen_rtx_REG (Pmode, REGNO (scratch_in));
if (rtx_equal_p (scratch, target))
scratch = gen_rtx_REG (Pmode, REGNO (scratch_in) + 1);
/* src must be a PLUS; get its two operands. */
if (GET_CODE (src) != PLUS || GET_MODE (src) != Pmode)
abort ();

6
gcc/config/s390/s390.md
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@ -1,5 +1,5 @@
;;- Machine description for GNU compiler -- S/390 / zSeries version.
;; Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
;; Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
;; Contributed by Hartmut Penner (hpenner@de.ibm.com) and
;; Ulrich Weigand (uweigand@de.ibm.com).
;; This file is part of GNU CC.
@ -3151,7 +3151,7 @@
(define_expand "reload_indi"
[(parallel [(match_operand:DI 0 "register_operand" "=a")
(match_operand:DI 1 "s390_plus_operand" "")
(match_operand:DI 2 "register_operand" "=&a")])]
(match_operand:TI 2 "register_operand" "=&a")])]
"TARGET_64BIT"
"
{
@ -3238,7 +3238,7 @@
(define_expand "reload_insi"
[(parallel [(match_operand:SI 0 "register_operand" "=a")
(match_operand:SI 1 "s390_plus_operand" "")
(match_operand:SI 2 "register_operand" "=&a")])]
(match_operand:DI 2 "register_operand" "=&a")])]
"!TARGET_64BIT"
"
{