2015-02-17 14:12 GMT+03:00 Georg-Johann Lay <a...@gjlay.de>: > Byte-wise pushing virtual regs like arg pointer migth result in patterns > like > > (set (mem:QI (post_dec:HI (reg:HI 32 SP))) > (subreg:QI (plus:HI (reg:HI 28) > (const_int 17)) 0)) > > after elimination. > > Attached patch uses new pushhi1_insn to push virtuals in HImode so that > expressions like in subreg_reg from above can be reloaded. > > Ok to commit ? > > Johann > > PR target/64452 > > * config/avr/avr.md (pushhi_insn): New insn. > (push<mode>1): Push virtual regs in one chunk using pushhi1_insn.
Approved. (But I'm worry about this because it's reload related problem and it can have a side effect) Denis.
