[Bug rtl-optimization/50764] [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge

[vries at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50764

--- Comment #8 from vries at gcc dot gnu.org 2011-10-29 12:32:37 UTC ---
> Using this patch, the dead label introduced by cfg_layout_finalize is removed:

To be more precise: Using this patch, the dead label introduced by
cfg_layout_finalize is removed before sched2 (in pass_reorder_blocks) rather
than after sched2 (in pass_duplicate_computed_gotos).