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Re: Bootstrap times on mainline are getting worse


On Fri, Oct 18, 2002 at 11:34:11AM -0400, Diego Novillo wrote:
> On Fri, 18 Oct 2002, Kaveh R. Ghazi wrote:
> 
> > Care to take a stab?
> > 
> Heh, having the time to do that would be nice.  A cursory look at
> the .diff files doesn't reveal anything blatantly obvious.  Only
> three potential candidates:
> 
> +2002-10-04  Roger Sayle  <roger@eyesopen.com>
> +
> +       * config/i386/i386.h (processor_costs): Add new fields fadd,
> +       fmul, fdiv, fabs, fchs and fsqrt to costs structure.
> +       (RTX_COSTS): Use these fields to determine the RTX costs
> +       of floating point addition/subtraction, multiplication,
> +       division, fabs, negation and square root respectively.
> +       * config/i386/i386.c (size_cost): Provide instruction sizes
> +       for these new fields.
> +       (i386_cost, i486_cost, pentium_cost, pentiumpro_cost,
> +       k6_cost, athlon_cost, pentium4_cost): Provide typical cycle
> +       counts for these new fields for all x86 processor variants.
> +
> 
A 'time make bootstrap' on version "2002-10-03" gives:

real    57m38.632s
user    51m20.200s
sys     4m55.500s


With this patch I get:

real    58m16.766s
user    51m14.720s
sys     5m0.850s


$ cat /proc/cpuinfo 
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 6
model           : 6
model name      : AMD Athlon(tm) 4 Processor
stepping        : 2
cpu MHz         : 1399.803
cache size      : 256 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mmxext 3dnowext 3dnow
bogomips        : 2791.83



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