------- Comment #3 from pinskia at gcc dot gnu dot org 2008-11-27 01:00 ------- This patch fixes the ICE: Index: combine.c =================================================================== --- combine.c (revision 142231) +++ combine.c (working copy) @@ -12575,7 +12575,7 @@ distribute_notes (rtx notes, rtx from_in place = from_insn; else if (reg_referenced_p (XEXP (note, 0), PATTERN (i3))) place = i3; - else if (i2 != 0 && next_nonnote_insn (i2) == i3 + else if (i2 != 0 && INSN_P (i2) && next_nonnote_insn (i2) == i3 && reg_referenced_p (XEXP (note, 0), PATTERN (i2))) place = i2; else if ((rtx_equal_p (XEXP (note, 0), elim_i2)
--- CUT --- At -O1, g_243 > l_261 is not optimized to 0 at the tree level but the RTL level which allows combine the ability to optimize the divide. -- pinskia at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Ever Confirmed|0 |1 Last reconfirmed|0000-00-00 00:00:00 |2008-11-27 01:00:40 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38281