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[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
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 30 Nov 2011 12:51:35 +0000
- Subject: [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
- Auto-submitted: auto-generated
- References: <bug-48721-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48721
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-11-30 12:51:35 UTC ---
Created attachment 25951
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25951
gcc47-pr48721.patch
begin_move_insn can be easily fixed, the question is why we try to schedule the
tail call insn over the restore of r12, which is a call saved register and
therefore has to be restored.