Re: Plus Reload

2011-01-16 Thread Gidi Nave
On Wed, Jan 12, 2011 at 6:36 PM, Dave Korn wrote: > On 12/01/2011 13:50, Jeff Law wrote: > >> On 01/12/11 01:45, Gidi Nave wrote: >> >>> One more question: >>> GCC usually knows how to handle cases which need decomposition of >>> expressions due to architecture limitations. >>> In my case it didn'

Re: Plus Reload

2011-01-12 Thread Dave Korn
On 12/01/2011 13:50, Jeff Law wrote: > On 01/12/11 01:45, Gidi Nave wrote: > >> One more question: >> GCC usually knows how to handle cases which need decomposition of >> expressions due to architecture limitations. >> In my case it didn't know. >> How can I foreseen additional such cases, in ord

Re: Plus Reload

2011-01-12 Thread Gidi Nave
On Wed, Jan 12, 2011 at 3:50 PM, Jeff Law wrote: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > On 01/12/11 01:45, Gidi Nave wrote: > >> >> One more question: >> GCC usually knows how to handle cases which need decomposition of >> expressions due to architecture limitations. >> In my case i

Re: Plus Reload

2011-01-12 Thread Jeff Law
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 01/12/11 01:45, Gidi Nave wrote: > > One more question: > GCC usually knows how to handle cases which need decomposition of > expressions due to architecture limitations. > In my case it didn't know. > How can I foreseen additional such cases, in

Re: Plus Reload

2011-01-12 Thread Gidi Nave
On Wed, Jan 12, 2011 at 8:27 AM, Ian Lance Taylor wrote: > Gidi Nave writes: > >> On Tue, Jan 11, 2011 at 7:22 PM, Ian Lance Taylor wrote: >>> Gidi Nave writes: >>> On Tue, Jan 11, 2011 at 5:34 PM, Ian Lance Taylor wrote: > So why doesn't d1 = d1 + -96 match the last instruction

Re: Plus Reload

2011-01-11 Thread Ian Lance Taylor
Gidi Nave writes: > On Tue, Jan 11, 2011 at 7:22 PM, Ian Lance Taylor wrote: >> Gidi Nave writes: >> >>> On Tue, Jan 11, 2011 at 5:34 PM, Ian Lance Taylor wrote: >>> So why doesn't d1 = d1 + -96 match the last instruction there? >>> because it's:    add d,d unsigned >>> we don't have

Re: Plus Reload

2011-01-11 Thread Gidi Nave
On Tue, Jan 11, 2011 at 7:22 PM, Ian Lance Taylor wrote: > Gidi Nave writes: > >> On Tue, Jan 11, 2011 at 5:34 PM, Ian Lance Taylor wrote: >> >>> So why doesn't d1 = d1 + -96 match the last instruction there? >>> >> because it's:    add d,d unsigned >> we don't have:  add d,d signed >> >> and in

Re: Plus Reload

2011-01-11 Thread Ian Lance Taylor
Gidi Nave writes: > On Tue, Jan 11, 2011 at 5:34 PM, Ian Lance Taylor wrote: > >> So why doesn't d1 = d1 + -96 match the last instruction there? >> > because it's:add d,d unsigned > we don't have: add d,d signed > > and in this case we need: d = r + (-96) (Please don't top-post on this mai

Re: Plus Reload

2011-01-11 Thread Gidi Nave
tes: >>> >>>> I have a question regarding Plus reload situation I ran into in my >>>> port (which was taken from branch 4.6): >>>> >>>> I got the following insn:  Set d1  (plus r1 -96). >>>> d1 and r1 are 2 registers fr

Re: Plus Reload

2011-01-11 Thread Ian Lance Taylor
Gidi Nave writes: > On Tue, Jan 11, 2011 at 4:30 PM, Ian Lance Taylor wrote: >> Gidi Nave writes: >> >>> I have a question regarding Plus reload situation I ran into in my >>> port (which was taken from branch 4.6): >>> >>> I got the followin

Re: Plus Reload

2011-01-11 Thread Jeff Law
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 01/11/11 07:59, Gidi Nave wrote: > Hi Ian, > > Relevant instruction supported: > > add r,r,r > add r,r unsigned > add r,r, signed > add d,d,d > add d,d unsigned You're probably going to need a secondary reload to deal with this case d = r + -const

Re: Plus Reload

2011-01-11 Thread Gidi Nave
ue, Jan 11, 2011 at 4:30 PM, Ian Lance Taylor wrote: >> Gidi Nave writes: >> >>> I have a question regarding Plus reload situation I ran into in my >>> port (which was taken from branch 4.6): >>> >>> I got the following insn:  Set d1  (plus r1 -96).

Re: Plus Reload

2011-01-11 Thread Gidi Nave
Hi Ian, Relevant instruction supported: add r,r,r add r,r unsigned add r,r, signed add d,d,d add d,d unsigned Thanks, Gal. On Tue, Jan 11, 2011 at 4:30 PM, Ian Lance Taylor wrote: > Gidi Nave writes: > >> I have a question regarding Plus reload situation I ran into in my >&g

Re: Plus Reload

2011-01-11 Thread Ian Lance Taylor
Gidi Nave writes: > I have a question regarding Plus reload situation I ran into in my > port (which was taken from branch 4.6): > > I got the following insn:  Set d1  (plus r1 -96). > d1 and r1 are 2 registers from different classes. > > The reload (which take place at: r

Plus Reload

2011-01-11 Thread Gidi Nave
Hi, I have a question regarding Plus reload situation I ran into in my port (which was taken from branch 4.6): I got the following insn:  Set d1  (plus r1 -96). d1 and r1 are 2 registers from different classes. The reload (which take place at: reload1.c , gen_reload(out = d1, in = (plus r1 -96