[Bug target/55212] [SH] Switch from IRA to LRA

[kkojima at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55212

--- Comment #41 from Kazumoto Kojima <kkojima at gcc dot gnu.org> ---
Created attachment 33601
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33601&action=edit
A trial patch for reload-loop problem

My first trial is to define a special movsf_ie insn_and_split used
when lra makes new reload insns.
Here is the check-gcc result with the patch + c#29 + patch c#32:

                === gcc Summary ===

# of expected passes            83153
# of unexpected failures        21
# of unexpected successes       1
# of expected failures          119
# of unresolved testcases       3
# of unsupported tests          1514
/home/ldroot/dodes/xsh-gcc-lra/gcc/xgcc  version 5.0.0 20140913 (experimental)
(GCC) 

No "Max. number of generated reload insns per insn is achieved" errors.
I'm backing out the patch in c#27 for this test because there are
many execution errors with it.