-fnew-ra -- which architectures?

Daniel Berlin dberlin@dberlin.org
Tue Jul 16 03:22:00 GMT 2002


On Mon, 15 Jul 2002, Daniel Berlin wrote:

> On 16 Jul 2002, Falk Hueffner wrote:
> 
> > Daniel Berlin <dberlin@dberlin.org> writes:
> > 
> > > On 16 Jul 2002, Falk Hueffner wrote:
> > > 
> > > > internal compiler error: Internal compiler error in check_df, at ra.c:629
> > > > and
> > > > internal compiler error: Internal compiler error in check_df, at ra.c:637
> > > 
> > > Yeah, these aren't new-ra problems, they are df.c problems.
> > > 
> > > ALl the df changes from the new-regalloc-branch haven't been 
> > > reviewed/committed yet.
> > > The one that fixes the above is (reversed, since i diffed new-ra to head, 
> > > rather than head to new-ra):
> > 
> > Thanks, this fixes the problem. Improvements are moderate on my test
> > case, though:
> > 
> >                   number of stack writes
> > gcc -O1             0
> > Compaq Compiler    11 (the caller saved registers)
> > gcc -O3           119
> > gcc -O3 -fnew-ra  101
> > 
> > Are you interested in the test case?
> SUre, if course like, though a 20% reduction is nothing to sneeze at.
> 
s/course/you/



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