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MIR cleanups and predecessor cache #34149

Merged
merged 9 commits into from
Jun 9, 2016
Merged

MIR cleanups and predecessor cache #34149

merged 9 commits into from
Jun 9, 2016

Commits on Jun 9, 2016

  1. merge the RemoveDeadBlocks pass into the SimplifyCfg pass

    @arielb1
    arielb1 authored and Ariel Ben-Yehuda committed Jun 9, 2016
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  2. introduce the type-safe IdxVec and use it instead of loose indexes

    @arielb1
    arielb1 authored and Ariel Ben-Yehuda committed Jun 9, 2016
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  3. make the basic_blocks field private

    @arielb1
    arielb1 authored and Ariel Ben-Yehuda committed Jun 9, 2016
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  4. add a cache for MIR predecessors

    @arielb1
    arielb1 authored and Ariel Ben-Yehuda committed Jun 9, 2016
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  5. introduce an unreachable terminator 

    Use it instead of a `panic` for inexhaustive matches and correct the
comment. I think we trust our match-generation algorithm enough to
generate these blocks, and not generating an `unreachable` means that
LLVM won't optimize `match void() {}` to an `unreachable`.
    @arielb1
    arielb1 authored and Ariel Ben-Yehuda committed Jun 9, 2016
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  6. add hook infrastructure for automatically dumping MIR on every pass

    @arielb1
    arielb1 authored and Ariel Ben-Yehuda committed Jun 9, 2016
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  7. refactor simplify_cfg and split off simplify_branches

    @arielb1
    arielb1 authored and Ariel Ben-Yehuda committed Jun 9, 2016
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  8. use the type name as the pass name

    @arielb1
    arielb1 authored and Ariel Ben-Yehuda committed Jun 9, 2016
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  9. fix issues

    @arielb1
    Ariel Ben-Yehuda authored and arielb1 committed Jun 9, 2016
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