[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 #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:
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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.
...