buggy optimization levels...

[Kris Kennaway]

On Thu, Jul 31, 2003 at 09:34:17PM -0400, Chuck Swiger wrote:

> OK.  Can the existence of such problems be confirmed reliably, say by 
> regression testing?

The problem is in identifying precisely which piece of code is
failing.  A regression test is only useful if it concisely exercises a
specific set of tests.  As I said, in theory any optimization problems
can be tracked down to the failure of a certain piece of code, but in
something as large as the kernel it is not usually easy.

Kris
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