[Bug target/64736] New: [SH] ICE in dwarf2cfi.c:2318

[olegendo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64736

            Bug ID: 64736
           Summary: [SH] ICE in dwarf2cfi.c:2318
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: olegendo at gcc dot gnu.org
            Target: sh*-*-*

The problem has been discovered by another patch here:
https://gcc.gnu.org/ml/gcc-patches/2015-01/msg01962.html

It seems that something is creating RTL which is confusing dwarf2cfi.c.
It can be reproduced on trunk by setting the insn length for
define_insn_and_split "movrt_negc" to "3" (default value is "2").

I guess this is a latent bug/problem of SH reorg (maybe PR 59189) or the
dwarf2cfi.c code (maybe PR 64602).