[Bug target/58314] SH4 error: 'asm' operand requires impossible reload

[chrbr at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58314

chrbr at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
   Last reconfirmed|                            |2013-11-20
                 CC|                            |olegendo at gcc dot gnu.org
         Resolution|FIXED                       |---
     Ever confirmed|0                           |1

--- Comment #5 from chrbr at gcc dot gnu.org ---
Linux kernel build fails since 4.8

cc1 -O2 consolemap.c 

drivers/char/consolemap.c:654:647: error: 'asm' operand requires impossible
reload

seems to be due to this movhi<mode>_reg_reg split out of the *movhi insns.

Oleg, I think it time to re-unify those. Doing an experimental resurrection of
the r,r reload constraints seems to fix it, but without knowing the impacts on
your T-bit combine optimizations...