| Message ID | 1466431030-35005-1-git-send-email-james.greenhalgh@arm.com |
|---|---|
| State | New |
| Headers | show |
On 20/06/16 14:57, James Greenhalgh wrote: > > Hi, > > As recently done for Cortex-A57 [1], this patch rebases the floating-point > cost table for Cortex-A53 to be relative to the cost of a floating-point move. > I wrote a little more on the justification for doing this in the other patch, > but in summary this is what other targets and sub-targets do, so we should > fall in line with that. > > Unlike the Cortex-A57 changes, this had no performance impact across > Spec2000 and Spec2006. I'm posting it to keep the strategy for costs > aligned between the two cores. > > Bootstrapped on aarch64-none-linux-gnu and arm-none-linux-gnueabihf with > no issues. > > OK? > > Thanks, > James > > [1]: https://gcc.gnu.org/ml/gcc-patches/2016-06/msg00251.html > > --- > 2016-06-20 James Greenhalgh <james.greenhalgh@arm.com> > > * config/arm/aarch-cost-tables.h (cortexa53_extra_costs): Make FP > costs relative to the cost of a register move. > OK. R. > > 0001-AArch64-Give-some-new-costs-for-Cortex-A53-floating-.patch > > > diff --git a/gcc/config/arm/aarch-cost-tables.h b/gcc/config/arm/aarch-cost-tables.h > index 5f42253..8bcfcb4 100644 > --- a/gcc/config/arm/aarch-cost-tables.h > +++ b/gcc/config/arm/aarch-cost-tables.h > @@ -191,35 +191,35 @@ const struct cpu_cost_table cortexa53_extra_costs = > { > /* FP SFmode */ > { > - COSTS_N_INSNS (15), /* div. */ > - COSTS_N_INSNS (3), /* mult. */ > - COSTS_N_INSNS (7), /* mult_addsub. */ > - COSTS_N_INSNS (7), /* fma. */ > - COSTS_N_INSNS (3), /* addsub. */ > - COSTS_N_INSNS (1), /* fpconst. */ > - COSTS_N_INSNS (2), /* neg. */ > - COSTS_N_INSNS (1), /* compare. */ > - COSTS_N_INSNS (3), /* widen. */ > - COSTS_N_INSNS (3), /* narrow. */ > - COSTS_N_INSNS (3), /* toint. */ > - COSTS_N_INSNS (3), /* fromint. */ > - COSTS_N_INSNS (3) /* roundint. */ > + COSTS_N_INSNS (5), /* div. */ > + COSTS_N_INSNS (1), /* mult. */ > + COSTS_N_INSNS (2), /* mult_addsub. */ > + COSTS_N_INSNS (2), /* fma. */ > + COSTS_N_INSNS (1), /* addsub. */ > + 0, /* fpconst. */ > + COSTS_N_INSNS (1), /* neg. */ > + 0, /* compare. */ > + COSTS_N_INSNS (1), /* widen. */ > + COSTS_N_INSNS (1), /* narrow. */ > + COSTS_N_INSNS (1), /* toint. */ > + COSTS_N_INSNS (1), /* fromint. */ > + COSTS_N_INSNS (1) /* roundint. */ > }, > /* FP DFmode */ > { > - COSTS_N_INSNS (30), /* div. */ > - COSTS_N_INSNS (3), /* mult. */ > - COSTS_N_INSNS (7), /* mult_addsub. */ > - COSTS_N_INSNS (7), /* fma. */ > - COSTS_N_INSNS (3), /* addsub. */ > - COSTS_N_INSNS (1), /* fpconst. */ > - COSTS_N_INSNS (2), /* neg. */ > - COSTS_N_INSNS (1), /* compare. */ > - COSTS_N_INSNS (3), /* widen. */ > - COSTS_N_INSNS (3), /* narrow. */ > - COSTS_N_INSNS (3), /* toint. */ > - COSTS_N_INSNS (3), /* fromint. */ > - COSTS_N_INSNS (3) /* roundint. */ > + COSTS_N_INSNS (10), /* div. */ > + COSTS_N_INSNS (1), /* mult. */ > + COSTS_N_INSNS (2), /* mult_addsub. */ > + COSTS_N_INSNS (2), /* fma. */ > + COSTS_N_INSNS (1), /* addsub. */ > + 0, /* fpconst. */ > + COSTS_N_INSNS (1), /* neg. */ > + 0, /* compare. */ > + COSTS_N_INSNS (1), /* widen. */ > + COSTS_N_INSNS (1), /* narrow. */ > + COSTS_N_INSNS (1), /* toint. */ > + COSTS_N_INSNS (1), /* fromint. */ > + COSTS_N_INSNS (1) /* roundint. */ > } > }, > /* Vector */ >
diff --git a/gcc/config/arm/aarch-cost-tables.h b/gcc/config/arm/aarch-cost-tables.h index 5f42253..8bcfcb4 100644 --- a/gcc/config/arm/aarch-cost-tables.h +++ b/gcc/config/arm/aarch-cost-tables.h @@ -191,35 +191,35 @@ const struct cpu_cost_table cortexa53_extra_costs = { /* FP SFmode */ { - COSTS_N_INSNS (15), /* div. */ - COSTS_N_INSNS (3), /* mult. */ - COSTS_N_INSNS (7), /* mult_addsub. */ - COSTS_N_INSNS (7), /* fma. */ - COSTS_N_INSNS (3), /* addsub. */ - COSTS_N_INSNS (1), /* fpconst. */ - COSTS_N_INSNS (2), /* neg. */ - COSTS_N_INSNS (1), /* compare. */ - COSTS_N_INSNS (3), /* widen. */ - COSTS_N_INSNS (3), /* narrow. */ - COSTS_N_INSNS (3), /* toint. */ - COSTS_N_INSNS (3), /* fromint. */ - COSTS_N_INSNS (3) /* roundint. */ + COSTS_N_INSNS (5), /* div. */ + COSTS_N_INSNS (1), /* mult. */ + COSTS_N_INSNS (2), /* mult_addsub. */ + COSTS_N_INSNS (2), /* fma. */ + COSTS_N_INSNS (1), /* addsub. */ + 0, /* fpconst. */ + COSTS_N_INSNS (1), /* neg. */ + 0, /* compare. */ + COSTS_N_INSNS (1), /* widen. */ + COSTS_N_INSNS (1), /* narrow. */ + COSTS_N_INSNS (1), /* toint. */ + COSTS_N_INSNS (1), /* fromint. */ + COSTS_N_INSNS (1) /* roundint. */ }, /* FP DFmode */ { - COSTS_N_INSNS (30), /* div. */ - COSTS_N_INSNS (3), /* mult. */ - COSTS_N_INSNS (7), /* mult_addsub. */ - COSTS_N_INSNS (7), /* fma. */ - COSTS_N_INSNS (3), /* addsub. */ - COSTS_N_INSNS (1), /* fpconst. */ - COSTS_N_INSNS (2), /* neg. */ - COSTS_N_INSNS (1), /* compare. */ - COSTS_N_INSNS (3), /* widen. */ - COSTS_N_INSNS (3), /* narrow. */ - COSTS_N_INSNS (3), /* toint. */ - COSTS_N_INSNS (3), /* fromint. */ - COSTS_N_INSNS (3) /* roundint. */ + COSTS_N_INSNS (10), /* div. */ + COSTS_N_INSNS (1), /* mult. */ + COSTS_N_INSNS (2), /* mult_addsub. */ + COSTS_N_INSNS (2), /* fma. */ + COSTS_N_INSNS (1), /* addsub. */ + 0, /* fpconst. */ + COSTS_N_INSNS (1), /* neg. */ + 0, /* compare. */ + COSTS_N_INSNS (1), /* widen. */ + COSTS_N_INSNS (1), /* narrow. */ + COSTS_N_INSNS (1), /* toint. */ + COSTS_N_INSNS (1), /* fromint. */ + COSTS_N_INSNS (1) /* roundint. */ } }, /* Vector */