* Usable flags for tree-ssa-branch?
@ 2002-10-15 2:11 Andreas Jaeger
2002-10-15 6:11 ` Diego Novillo
0 siblings, 1 reply; 2+ messages in thread
From: Andreas Jaeger @ 2002-10-15 2:11 UTC (permalink / raw)
To: gcc
I noticed today that -ftree-ssa has been removed and -ftree-ccp is
used by Diego. I will use that one also on my SPEC tester. What is
the status of other flags that are usable? Should I add some more?
Andreas
--
Andreas Jaeger
SuSE Labs aj@suse.de
private aj@arthur.inka.de
http://www.suse.de/~aj
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: Usable flags for tree-ssa-branch?
2002-10-15 2:11 Usable flags for tree-ssa-branch? Andreas Jaeger
@ 2002-10-15 6:11 ` Diego Novillo
0 siblings, 0 replies; 2+ messages in thread
From: Diego Novillo @ 2002-10-15 6:11 UTC (permalink / raw)
To: Andreas Jaeger; +Cc: gcc
On Tue, 15 Oct 2002, Andreas Jaeger wrote:
> I noticed today that -ftree-ssa has been removed and -ftree-ccp is
> used by Diego. I will use that one also on my SPEC tester. What is
> the status of other flags that are usable? Should I add some more?
>
Right now -O2 enables tree-ssa. What it does is trigger the main
analysis passes: flowgraph, data reference finder and SSA. Each
optimization pass needs to be enabled with a different -ftree-XXX
switch (invoke.texi documents the different -ftree passes).
The only pass that is close to working right now is CCP. The
idea is for passes to be enabled at -O2 as we start fixing them.
If you want to enable passes with -ftree-XXX, that's great. The
safest way, however, is to use -O2.
Diego.
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2002-10-15 2:11 Usable flags for tree-ssa-branch? Andreas Jaeger
2002-10-15 6:11 ` Diego Novillo
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