Re: gcc -O2 vs gcc -Os performance

Alan Cox
2003-02-06T16:42:06Z

On Thu, 2003-02-06 at 15:42, Martin J. Bligh wrote:
> All done with gcc-2.95.4 (Debian Woody). These machines (16x NUMA-Q) have
> 700MHz P3 Xeons with 2Mb L2 cache ... -Os might fare better on celeron
> with a puny cache if someone wants to try that out

gcc 3.2 is a lot smarter about -Os and it makes a very big size
difference according to the numbers the from the ACPI guys.

Im not sure testing with a gcc from the last millenium is useful 8)