------- Comment #6 from spark at gcc dot gnu dot org 2007-06-25 23:13 ------- This patch:
diff -r 36792eca786a gcc/combine.c --- a/gcc/combine.c Sat Jun 23 16:21:43 2007 +0000 +++ b/gcc/combine.c Mon Jun 25 23:10:32 2007 +0000 @@ -2849,6 +2849,7 @@ try_combine (rtx i3, rtx i2, rtx i1, int PATTERN (i3) = newpat; adjust_for_new_dest (i3); + df_insn_rescan (i3); } } } at least fixes the immediate problem, though it's not yet completely clear whether this is the right approach as I don't know whether the PATTERN (i3) change above is supposed to be permanent or not. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32481