Re: GCC 4.1: Buildable on GHz machines only?

[Richard Earnshaw <rearnsha at gcc dot gnu dot org>]

On Wed, 2005-04-27 at 16:31, David Edelsohn wrote:

> 	The GCC build times are not unreasonable compared to other,
> commercial compilers with similar functionality.  And the GCC developers
> ave plans to address inefficiencies -- GCC 4.0 often is faster than GCC
> 3.4.

If you are going to make sweeping statements like this you need to back
them up with hard data.

For C code, on average (obviously there are cases which are exceptions)
GCC 4.0 is about 7% slower on ARM than gcc 3.4.

http://www.inf.u-szeged.hu/csibe/ocomp.php?branchid_a=gcc_3_4_0_release&branchid_b=gcc_4_0_0_release&targetid_a=arm-elf&targetid_b=arm-elf&timestamp_a=2003-01-01%2012:00:00&timestamp_b=2003-01-01%2012:00:00&flags_a=-O2&flags_b=-O2&csibever_a=2.x.x&csibever_b=2.x.x&dataview=Compilation%20time&viewmode=Summarized%20bar%20chart&finish_button=Finish

And it is >10% slower than 3.3.

And ...

R.