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re PR bootstrap/51725 (segfault in stage 3 when compiling gcc/opts.c for sparc64-linux)

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PR bootstrap/51725
	* cselib.c (new_elt_loc_list): When moving locs from one
	cselib_val to its new canonical_cselib_val and the
	cselib_val was in first_containing_mem chain, but
	the canonical_cselib_val was not, add the latter into the
	chain.
	(cselib_invalidate_mem): Compare canonical_cselib_val of
	addr_list chain elt with v.

From-SVN: r182858
This commit is contained in:
Jakub Jelinek 2012-01-03 21:57:29 +01:00 • committed by Jakub Jelinek
parent 346afd846b
commit e30afafbbf
2 changed files with 16 additions and 1 deletions
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9
gcc/ChangeLog
View file

@ -1,5 +1,14 @@
2012-01-03 Jakub Jelinek <jakub@redhat.com>
PR bootstrap/51725
* cselib.c (new_elt_loc_list): When moving locs from one
cselib_val to its new canonical_cselib_val and the
cselib_val was in first_containing_mem chain, but
the canonical_cselib_val was not, add the latter into the
chain.
(cselib_invalidate_mem): Compare canonical_cselib_val of
addr_list chain elt with v.
PR pch/51722
* dwarf2out.c (dwarf2out_start_source_file, dwarf2out_define,
dwarf2out_undef): Allocate e.info using ggc_strdup instead

8
gcc/cselib.c
View file

@ -277,6 +277,12 @@ new_elt_loc_list (cselib_val *val, rtx loc)
}
el->next = val->locs;
next = val->locs = CSELIB_VAL_PTR (loc)->locs;
if (CSELIB_VAL_PTR (loc)->next_containing_mem != NULL
&& val->next_containing_mem == NULL)
{
val->next_containing_mem = first_containing_mem;
first_containing_mem = val;
}
}
/* Chain LOC back to VAL. */
@ -2211,7 +2217,7 @@ cselib_invalidate_mem (rtx mem_rtx)
mem_chain = &addr->addr_list;
for (;;)
{
if ((*mem_chain)->elt == v)
if (canonical_cselib_val ((*mem_chain)->elt) == v)
{
unchain_one_elt_list (mem_chain);
break;