http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56023
--- Comment #8 from Uros Bizjak <ubizjak at gmail dot com> 2013-01-19 10:17:43 UTC --- The scheduler passes block boundary here and schedules insns from the next block. This is the difference to the compilation w/o -g and to gcc-4_7 branch. ;; ====================================================== ;; -- basic block 10 from 99 to 102 -- before reload ;; ====================================================== ;; --------------- forward dependences: ------------ ;; --- Region Dependences --- b 10 bb 5 ;; insn code bb dep prio cost reservation ;; ---- ---- -- --- ---- ---- ----------- ;; 99 -1 10 0 0 0 nothing : 43 100 ;; 100 -1 10 1 0 0 nothing : ;; 102 184 10 0 2 2 (ev4_ib1+ev4_bbox),ev4_bbox : 44 ;; --- Region Dependences --- b 4 bb 6 ;; insn code bb dep prio cost reservation ;; ---- ---- -- --- ---- ---- ----------- ;; 29 52 4 0 9 2 (ev4_ib0+ev4_ebox) : 44 30 ;; 30 159 4 1 7 2 (ev4_ib0+ev4_ebox) : 44 31 ;; 31 159 4 1 5 2 (ev4_ib0+ev4_ebox) : 44 39 ;; 35 159 4 0 5 2 (ev4_ib0+ev4_ebox) : 44 39 ;; 37 NOTE_INSN_DELETED ;; 38 NOTE_INSN_DELETED ;; 39 41 4 2 3 2 (ev4_ib0+ev4_ebox) : 44 ;; 40 NOTE_INSN_DELETED ;; 41 3 4 0 2 2 (ev4_ib0+ev4_ebox) : 44 ;; 42 NOTE_INSN_DELETED ;; 43 3 4 0 2 2 (ev4_ib0+ev4_ebox) : 44 ;; 44 184 4 8 2 2 (ev4_ib1+ev4_bbox),ev4_bbox : ;; dependencies resolved: insn 99 ;; tick updated: insn 99 into ready ;; dependencies resolved: insn 102 ;; Ready-->Q: insn 102: queued for 2 cycles. ;; tick updated: insn 102 into queue with cost=2 ;; dependencies resolved: insn 29/b6 ;; Ready-->Q: insn 29/b6: queued for 2 cycles. ;; tick updated: insn 29/b6 into queue with cost=2 ;; dependencies resolved: insn 35/b6 ;; Ready-->Q: insn 35/b6: queued for 2 cycles. ;; tick updated: insn 35/b6 into queue with cost=2 ;; dependencies resolved: insn 41/b6 ;; Ready-->Q: insn 41/b6: queued for 2 cycles. ;; tick updated: insn 41/b6 into queue with cost=2 ;; dependencies resolved: insn 43/b6 ;; Ready-->Q: insn 43/b6: queued for 2 cycles. ;; tick updated: insn 43/b6 into queue with cost=2 ;; Advanced a state. ;; ...
