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Fix cse bug that broke the ia64 port. 

* cse.c (cse_insn): Revert Oct 31 change.  When computing src_elt,
	if REG_RETVAL check succeeds, then put classp in src_elt.

From-SVN: r30406
This commit is contained in:
Jim Wilson 1999-11-05 07:08:13 +00:00 committed by Jim Wilson
parent 9399d5c63f
commit 26132f7136
2 changed files with 31 additions and 23 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
Thu Nov 4 23:07:14 1999 Jim Wilson <wilson@cygnus.com>
* cse.c (cse_insn): Revert Oct 31 change. When computing src_elt,
if REG_RETVAL check succeeds, then put classp in src_elt.
Thu Nov 4 23:48:14 1999 Jeffrey A Law (law@cygnus.com)
* function.c (pad_to_arg_alignment): Only update argument_pad

49
gcc/cse.c
View File

@ -5730,9 +5730,8 @@ cse_insn (insn, libcall_insn)
does not yet have an elt, and if so set the elt of the set source
to src_eqv_elt. */
for (i = 0; i < n_sets; i++)
if (n_sets == 1
|| (sets[i].rtl && sets[i].src_elt == 0
&& rtx_equal_p (SET_SRC (sets[i].rtl), src_eqv)))
if (sets[i].rtl && sets[i].src_elt == 0
&& rtx_equal_p (SET_SRC (sets[i].rtl), src_eqv))
sets[i].src_elt = src_eqv_elt;
}
@ -5760,29 +5759,33 @@ cse_insn (insn, libcall_insn)
enum machine_mode mode
= GET_MODE (src) == VOIDmode ? GET_MODE (dest) : GET_MODE (src);
/* Don't put a hard register source into the table if this is
the last insn of a libcall. */
if (sets[i].src_elt == 0
&& (GET_CODE (src) != REG
|| REGNO (src) >= FIRST_PSEUDO_REGISTER
|| ! find_reg_note (insn, REG_RETVAL, NULL_RTX)))
if (sets[i].src_elt == 0)
{
register struct table_elt *elt;
/* Note that these insert_regs calls cannot remove
any of the src_elt's, because they would have failed to
match if not still valid. */
if (insert_regs (src, classp, 0))
/* Don't put a hard register source into the table if this is
the last insn of a libcall. In this case, we only need
to put src_eqv_elt in src_elt. */
if (GET_CODE (src) != REG
|| REGNO (src) >= FIRST_PSEUDO_REGISTER
|| ! find_reg_note (insn, REG_RETVAL, NULL_RTX))
{
rehash_using_reg (src);
sets[i].src_hash = HASH (src, mode);
}
elt = insert (src, classp, sets[i].src_hash, mode);
elt->in_memory = sets[i].src_in_memory;
elt->in_struct = sets[i].src_in_struct;
sets[i].src_elt = classp = elt;
}
register struct table_elt *elt;
/* Note that these insert_regs calls cannot remove
any of the src_elt's, because they would have failed to
match if not still valid. */
if (insert_regs (src, classp, 0))
{
rehash_using_reg (src);
sets[i].src_hash = HASH (src, mode);
}
elt = insert (src, classp, sets[i].src_hash, mode);
elt->in_memory = sets[i].src_in_memory;
elt->in_struct = sets[i].src_in_struct;
sets[i].src_elt = classp = elt;
}
else
sets[i].src_elt = classp;
}
if (sets[i].src_const && sets[i].src_const_elt == 0
&& src != sets[i].src_const
&& ! rtx_equal_p (sets[i].src_const, src))