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rtl.h (shallow_copy_rtx): Declare.

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* rtl.h (shallow_copy_rtx): Declare.
	* rtl.c (shallow_copy_rtx): New function.
	* reload.c (find_reloads_toplev): Use shallow_copy_rtx instead of
	copy_rtx.

From-SVN: r25897
This commit is contained in:
J"orn Rennecke 1999-03-22 13:11:31 +00:00 committed by Joern Rennecke
parent d3c29f99ef
commit ce9d4c6d80
4 changed files with 31 additions and 1 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
Mon Mar 22 21:08:59 1999 J"orn Rennecke <amylaar@cygnus.co.uk>
* rtl.h (shallow_copy_rtx): Declare.
* rtl.c (shallow_copy_rtx): New function.
* reload.c (find_reloads_toplev): Use shallow_copy_rtx instead of
copy_rtx.
Mon Mar 22 10:44:33 1999 Vladimir Makarov <vmakarov@tofu.to.cygnus.com>
* config/h8300/h8300.md (adjust_length): New attribute.

2
gcc/reload.c
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@ -4517,7 +4517,7 @@ find_reloads_toplev (x, opnum, type, ind_levels, is_set_dest, insn)
not to do the change. */
if (new_part != XEXP (x, i) && ! CONSTANT_P (new_part) && ! copied)
{
x = copy_rtx (x);
x = shallow_copy_rtx (x);
copied = 1;
}
XEXP (x, i) = new_part;

22
gcc/rtl.c
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@ -488,6 +488,28 @@ copy_most_rtx (orig, may_share)
}
return copy;
}
/* Create a new copy of an rtx. Only copy just one level. */
rtx
shallow_copy_rtx (orig)
rtx orig;
{
register int i;
register char *format_ptr;
register RTX_CODE code = GET_CODE (orig);
register rtx copy = rtx_alloc (code);
PUT_MODE (copy, GET_MODE (orig));
copy->in_struct = orig->in_struct;
copy->volatil = orig->volatil;
copy->unchanging = orig->unchanging;
copy->integrated = orig->integrated;
for (i = 0; i < GET_RTX_LENGTH (code); i++)
copy->fld[i] = orig->fld[i];
return copy;
}
/* Subroutines of read_rtx. */

1
gcc/rtl.h
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@ -889,6 +889,7 @@ extern rtvec rtvec_alloc PROTO((int));
extern rtx copy_rtx PROTO((rtx));
extern rtx copy_rtx_if_shared PROTO((rtx));
extern rtx copy_most_rtx PROTO((rtx, rtx));
extern rtx shallow_copy_rtx PROTO((rtx));
extern rtvec gen_rtvec_v PROTO((int, rtx *));
extern rtvec gen_rtvec_vv PROTO((int, rtunion *));
extern rtx gen_reg_rtx PROTO((enum machine_mode));