------- Comment #31 from bergner at vnet dot ibm dot com 2006-12-05 04:41
-------
...and here's the patch I mentioned in the previous comment:
Index: reload1.c
===================================================================
--- reload1.c (revision 119497)
+++ reload1.c (working copy)
@@ -2930,7 +2930,7 @@ eliminate_regs_in_insn (rtx insn, int re
int icode = recog_memoized (insn);
rtx old_body = PATTERN (insn);
int insn_is_asm = asm_noperands (old_body) >= 0;
- rtx old_set = single_set (insn);
+ rtx old_set;
rtx new_body;
int val = 0;
int i;
@@ -2949,6 +2949,12 @@ eliminate_regs_in_insn (rtx insn, int re
return 0;
}
+ /* Guard against a PARALLEL with a REG_UNUSED note. */
+ if (GET_CODE (PATTERN (insn)) != PARALLEL)
+ old_set = single_set (insn);
+ else
+ old_set = 0;
+
if (old_set != 0 && REG_P (SET_DEST (old_set))
&& REGNO (SET_DEST (old_set)) < FIRST_PSEUDO_REGISTER)
{
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28690
