-O1 single optimization parameter

[massimiliano cialdi]

On Thu, Oct 9, 2008 at 10:57 AM, Andrew Haley <aph@redhat.com> wrote:
>> I need only stack usage optimization and NO code optimization (to let
>> us easly debug the code), which parameters I need to use?
> It's not possible.
I try to relax my constraint.
I need to reduce stack usage and keep the project debuggable (maybe
with some code optimization)
which set of parameters do I need to use.


Last, only for curiosity, how can I reproduce exacly the behaviour of -O0?
as I said in previous mail I tried with
-O1
-fno-defer-pop
-fno-delayed-branch
-fno-guess-branch-probability
-fno-cprop-registers
-fno-if-conversion
-fno-if-conversion2
-fno-tree-ccp
-fno-tree-dce
-fno-tree-dominator-opts
-fno-tree-dse
-fno-tree-ter
-fno-tree-lrs
-fno-tree-sra
-fno-tree-copyrename
-fno-tree-fre
-fno-tree-ch
-fno-unit-at-a-time
-fno-merge-constants
-fno-ipa-pure-const
-fno-ipa-reference
-fno-omit-frame-pointer
-fno-tree-copy-prop
-fno-tree-salias
-fno-tree-sink
-fno-var-tracking
-fno-caller-saves

and I obtain a binary quite much optimized than which one optained
only with -O0.
So which parameter are missing from that list?

thanks

-- 
Pro pace mundi adversus meganoides tertio Daitarn pugnabo.
Nisi times hanc vim, pugna!

Massimiliano Cialdi
cialdi@gmail.com
massimiliano.cialdi@powersoft.it