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Re: Enable SSA at -O0


... I agree with the AdaCore guys' opinion was that in 3.x -O1 was -Og in
practice, and it was then broken in 4.x. 
Me too.  I think that -O1 should be those optimizations that can be done
without undue effects on either the debug experience or on compile time.


Ok.  We should then drop some obviously debug-breaking stuff from -O1,
like SRA.

Maybe we can throttle it down? SRA on compiler-generated temporaries would be sometimes enough for C++.

Paolo

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