-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 04/07/11 13:41, Vladimir Makarov wrote: > The following patch should solve problem > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48435. It might solve other > latest IRA problems too including performance related ones. The patch > is for targets which require some values to be placed in hard registers > starting with an even (odd) hard registers. > > I already addressed an analogous problem recently and the patch I sent > that time although solved some problems it created even more new > problems. I should acknowledge this. > > The problem was in that profitable hard regs were used for colorability > criterion and finding hard registers where allocno values can be resided > but *also* as starting allocno hard registers. It resulted in spilling > allocnos which should be placed in multi-registers starting on a > specific border because profitable hard registers were only starting > registers and when we calculated number of available hard registers > multi-register allocnos can not fit only in their starting hard registers. > > The following patch was successfully bootstrapped on x86/x86-64 and on > i686 with H.J.'s autotester options. > > OK to commit? > > 2011-04-07 Vladimir Makarov <vmaka...@redhat.com> > > PR 4435 > * ira-color.c (setup_profitable_hard_regs): Add comments. > Don't take prohibited hard regs into account. > (setup_conflict_profitable_regs): Rename to > get_conflict_profitable_regs. > (check_hard_reg_p): Check prohibited hard regs. OK. jeff -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org/
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