[issue2506] Add mechanism to disable optimizations

[Pedro Gimeno]

Pedro Gimeno added the comment:

I consider peephole optimization when no optimization was requested a bug.

Documentation for -O says it "Turns on basic optimizations". Peephole optimization is a basic optimization, yet it is performed even when no basic optimizations were requested.

No need to add a switch. Just don't optimize if not requested.

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nosy: +pgimeno

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<http://bugs.python.org/issue2506>
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