The following patch was just committed as r201941 (pre-approved by Jakub) to fix PR rtl-optimization/58220 and PR regression/58221. Bootstrapped and tested on x86_64-unknown-linux-gnu. also confirmed that I could reproduce the problem in PR rtl-optimization/58220 and that the patch fixes it. Thanks to Kaz for the fix.
Index: final.c =================================================================== --- final.c (revision 201940) +++ final.c (revision 201941) @@ -1650,7 +1650,7 @@ reemit_insn_block_notes (void) rtx insn, note; insn = get_insns (); - for (; insn; insn = next_insn (insn)) + for (; insn; insn = NEXT_INSN (insn)) { tree this_block; Index: ChangeLog =================================================================== --- ChangeLog (revision 201940) +++ ChangeLog (revision 201941) @@ -1,3 +1,10 @@ +2013-08-23 Kaz Kojima <kkoj...@gcc.gnu.org> + + PR rtl-optimization/58220 + PR regression/58221 + * final.c (reemit_insn_block_notes): Use NEXT_INSN to + handle SEQUENCE insns properly. + 2013-08-23 Gabriel Dos Reis <g...@integrable-solutions.net> * pretty-print.h (pp_newline_and_flush): Declare. Remove macro Teresa -- Teresa Johnson | Software Engineer | tejohn...@google.com | 408-460-2413