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improve optimization passes to produce more compact IR #20853

Merged
merged 6 commits into from
Mar 10, 2017
Merged

improve optimization passes to produce more compact IR #20853

merged 6 commits into from
Mar 10, 2017

Commits on Mar 8, 2017

  1. improve ability to inline away typeassert and === 

    this was affected by using `Const` in more cases instead of `Type{}`
    @JeffBezanson
    JeffBezanson committed Mar 8, 2017
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  2. remove effect-free statements in void_use_elim_pass!

    @JeffBezanson
    JeffBezanson committed Mar 8, 2017
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  3. add a pass to remove variables whose values are never read

    @JeffBezanson
    JeffBezanson committed Mar 8, 2017
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  4. overhaul remove_redundant_temp_vars pass to remove more variables

    @JeffBezanson
    JeffBezanson committed Mar 8, 2017
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  5. add an inlining heuristic that helps avoid allocations 

    don't inline into a function `f` if doing so would put it over the
inlining threshhold, and if inlining `f` itself would help
avoid tuple allocations.

so far this is only used on `promote`, to limit the effects as
much as possible.
    @JeffBezanson
    JeffBezanson committed Mar 8, 2017
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Commits on Mar 10, 2017

  1. fix regressions due to replacing too many slots with SSAValues

    @JeffBezanson
    JeffBezanson committed Mar 10, 2017
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