[Bug target/67439] ICE: unrecognizable insn compiling arm-fp16 testcases with -march=armv7-a and -mrestrict-it

[alalaw01 at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67439

alalaw01 at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-09-03
                 CC|                            |alalaw01 at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #2 from alalaw01 at gcc dot gnu.org ---
I can reproduce the ICE with -mthumb, both "-mfloat-abi=hard -mfpu=neon" and
"-mfloat-abi=soft", but only with -mrestrict-it in both cases.
"-mfloat-abi=hard -mfpu=neon-fp16" is OK with and without -mrestrict-it.

I note the movhf patterns in vfp.md are only usable with neon-fp16; in other
cases, we appear to be using arm32_movhf in arm.md.