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[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
- From: "vries at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sat, 29 Oct 2011 17:16:11 +0000
- Subject: [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
- Auto-submitted: auto-generated
- References: <bug-50764-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50764
--- Comment #9 from vries at gcc dot gnu.org 2011-10-29 17:16:11 UTC ---
Using the bb-reorder patch, the assert is introduced/triggered by r177209:
...
r177209 | rth | 2011-08-02 21:56:29 +0200 (Tue, 02 Aug 2011) | 5 lines
h8300: Generate correct unwind info around swap_into/out_of_er6.
Minimal bug fix is to unset RTX_FRAME_RELATED_P on the PUSH
insn generated in h8300_swap_into_er6. But with a tiny bit
of effort we can generate real unwind info around the sequence.
...