Re: [lto] Add -flto-report

[Ralf Wildenhues <Ralf dot Wildenhues at gmx dot de>]

Hello Diego,

a couple of trivial nits:

* Diego Novillo wrote on Tue, Mar 03, 2009 at 01:34:09AM CET:
> --- doc/invoke.texi	(revision 144416)
> +++ doc/invoke.texi	(revision 144417)
> @@ -6707,6 +6707,32 @@ compilation unit, not for the single sou
> 
>  This option is not supported for Fortran programs.
> 
> +@item -flto
> +@opindex flto
> +This option runs the standard link-time optimizer.  When invoked
> +with source code, it generates GIMPLE and writes it to special
> +ELF sections in the object file.  When the object files are
> +linked together, all the function bodies are read from these ELF
> +sections and instantiated as if they had been part of the same
> +translation unit.
> +
> +Disabled by default.
> +
> +@item -flto
> +@opindex flto
> +This option is similar to @option{-flto}

No, actually, it is the same!  :-)
I guess you mean -fwhopr in the @item and @opindex here.

>   but it differs in how
> +the final link stage is executed.  Instead of loading all the
> +function bodies in memory, the callgraph is analyzed and
> +optimization decisions are made (whole program analysis or WPA).
> +Once optimizations decisions are made, the callgraph is

s/optimizations/optimization/

> +partitioned and the different sections are compiled separately
> +(local transformations or LTRANS).  This process allows
> +optimizations on very large programs that otherwise would not fit
> +in memory.  This option enables @option{-fwpa} and
> +@option{-fltrans} automatically.
> +
> +Disabled by default.
> +
>  @item -fwpa
>  @opindex fwpa
>  This option runs the link-time optimizer in the whole-program-analysis (WPA)
> @@ -6746,6 +6772,12 @@ written.  This option is only meaningful
> 
>  Disabled by default.
> 
> +@item -flto-report
> +This option is only useful when processing object files in LTO
> +mode (via -fwhopr or -flto).
> +
> +Disabled by default.
> +
>  @item -fcprop-registers
>  @opindex fcprop-registers
>  After register allocation and post-register allocation instruction splitting,

Cheers,
Ralf