Stop processing unreachable blocks when solving dataflow#74169
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bors merged 2 commits intorust-lang:masterfrom Jul 18, 2020
Merged
Stop processing unreachable blocks when solving dataflow#74169bors merged 2 commits intorust-lang:masterfrom
bors merged 2 commits intorust-lang:masterfrom
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Also adds some debug assertions to prevent API consumers from visiting those basic blocks by accident.
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@bors r+ rollup=true |
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…arth Rollup of 18 pull requests Successful merges: - rust-lang#71670 (Enforce even more the code blocks attributes check through rustdoc) - rust-lang#73930 (Make some Option methods const) - rust-lang#74009 (Fix MinGW `run-make-fulldeps` tests) - rust-lang#74056 (Add Arguments::as_str().) - rust-lang#74169 (Stop processing unreachable blocks when solving dataflow) - rust-lang#74251 (Teach bootstrap about target files vs target triples) - rust-lang#74288 (Fix src/test/run-make/static-pie/test-aslr.rs) - rust-lang#74300 (Use intra-doc links in core::iter module) - rust-lang#74364 (add lazy normalization regression tests) - rust-lang#74368 (Add CSS tidy check) - rust-lang#74394 (Remove leftover from emscripten fastcomp support) - rust-lang#74411 (Don't assign `()` to `!` MIR locals) - rust-lang#74416 (Use an UTF-8 locale for the linker.) - rust-lang#74424 (Move hir::Place to librustc_middle/hir) - rust-lang#74428 (docs: better demonstrate that None values are skipped as many times a…) - rust-lang#74438 (warn about uninitialized multi-variant enums) - rust-lang#74440 (Fix Arc::as_ptr docs) - rust-lang#74452 (intra-doc links: resolve modules in the type namespace) Failed merges: r? @ghost
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...instead we
debug_assertthat the user is not checking the dataflow state for an unreachable block. This resolves a FIXME in the dataflow engine. The old behavior was an artifact of the previous dataflow framework. Things should run a tiny bit faster now, but I suspect not enough to show up in benchmarks. AFAIK, only the generator transform runs dataflow on MIR with unreachable basic blocks.This PR also adds some utility methods to
mir::traversal.r? @pnkfelix