Intel and GNU C++ compilers
lindahl at keyresearch.com
Mon Oct 13 15:26:55 EDT 2003
On Mon, Oct 13, 2003 at 12:04:47PM -0400, Mark Hahn wrote:
> -fomit-frame-pointer usually helps, sometimes noticably,
> since x86 is so short of registers.
Actually it's a lot more of a tossup than it used to be: having a
frame pointer means you have another 256 bytes accessible via a
single-byte offset, and the SSE registers help relieve the register
On the Opteron, which has more of both general purpose and SSE
registers, the frame pointer is often a win.
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