Re: [patch,avr] tweak sign extensions, take #2

2014-10-24 Thread Denis Chertykov
2014-10-24 14:37 GMT+04:00 Georg-Johann Lay : > Am 10/23/2014 08:16 PM schrieb Denis Chertykov: >>> >>> This optimization makes most sign-extensions one instruction shorter in >>> the >>> case when the source register may be clobbered and the register numbers >>> are >>> different. Source and dest

Re: [patch,avr] tweak sign extensions, take #2

2014-10-24 Thread Georg-Johann Lay
Am 10/23/2014 08:16 PM schrieb Denis Chertykov: This optimization makes most sign-extensions one instruction shorter in the case when the source register may be clobbered and the register numbers are different. Source and destination may overlap. Ok for trunk? Johann gcc/ * config/av

Re: [patch,avr] tweak sign extensions

2014-10-23 Thread Denis Chertykov
2014-10-23 17:48 GMT+04:00 Georg-Johann Lay : > This optimization makes most sign-extensions one instruction shorter in the > case when the source register may be clobbered and the register numbers are > different. Source and destination may overlap. > > Ok for trunk? > > > Johann > > gcc/ >