[Bug rtl-optimization/48721] [4.6/4.7 Regression] ICE: verify_flow_info failed: missing barrier after block 6 with -foptimize-sibling-calls -fsched2-use-superblocks

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48721

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-11-30 13:21:59 UTC ---
Created attachment 25952
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25952
gcc47-pr48721.patch

Perhaps we should just consider tail calls as full barriers like asm volatile
etc., scheduling some insn after them doesn't make much sense, that is just a
fancy way of removing them and I'd hope that insn removal is the job of DCE and
similar optimizations, but not of the scheduler.