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combine.c (try_combine): Fix error in change to try original register.

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* combine.c (try_combine): Fix error in change to try original
	register.
	(gen_rtx_combine): Do same as gen_rtx for now.

From-SVN: r40390
This commit is contained in:
Richard Kenner 2001-03-11 22:08:12 +00:00 committed by Richard Kenner
parent 3d9d247676
commit c7ca5912e3
2 changed files with 15 additions and 22 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
Sun Mar 11 17:01:41 2001 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* combine.c (try_combine): Fix error in change to try original
register.
(gen_rtx_combine): Do same as gen_rtx for now.
2001-03-11 Zack Weinberg <zackw@stanford.edu>
* configure.in: AC_SUBST xm_defines.

31
gcc/combine.c
View File

@ -2150,12 +2150,15 @@ try_combine (i3, i2, i1, new_direct_jump_p)
/* If the split with the mode-changed register didn't work, try
the original register. */
if (! m_split && ni2dest != i2dest)
m_split = split_insns (gen_rtx_PARALLEL
(VOIDmode,
gen_rtvec (2, newpat,
gen_rtx_CLOBBER (VOIDmode,
i2dest))),
i3);
{
ni2dest = i2dest;
m_split = split_insns (gen_rtx_PARALLEL
(VOIDmode,
gen_rtvec (2, newpat,
gen_rtx_CLOBBER (VOIDmode,
i2dest))),
i3);
}
}
if (m_split && GET_CODE (m_split) != SEQUENCE)
@ -9922,22 +9925,6 @@ gen_rtx_combine VPARAMS ((enum rtx_code code, enum machine_mode mode, ...))
va_end (p);
/* See if this is in undobuf. Be sure we don't use objects that came
from another insn; this could produce circular rtl structures. */
for (undo = undobuf.undos; undo != undobuf.previous_undos; undo = undo->next)
if (!undo->is_int
&& GET_CODE (undo->old_contents.r) == code
&& GET_MODE (undo->old_contents.r) == mode)
{
for (j = 0; j < n_args; j++)
if (XEXP (undo->old_contents.r, j) != args[j])
break;
if (j == n_args)
return undo->old_contents.r;
}
/* Otherwise make a new rtx. We know we have 1, 2, or 3 args.
Use rtx_alloc instead of gen_rtx because it's faster on RISC. */
rt = rtx_alloc (code);