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Count and report time taken by MIR passes - #36296
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Mark-Simulacrum
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Sep 6, 2016
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@nagisa Can we get a Looks great otherwise, thanks! (From a performance monitoring perspective, anyway, I'm not qualified to review the code). |
nagisa
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Sep 6, 2016
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@Mark-Simulacrum This PR outputs more information under the |
Mark-Simulacrum
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Sep 6, 2016
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I'm thinking it might be a good idea to make it an expectation that major additions to the codebase (e.g. new passes) require additions to time passes. Should I write an RFC/Pre-RFC/irlo post for this, or is this a change/requirement that is just "we should start doing this"? |
eddyb
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Sep 6, 2016
Contributor
@bors r+ |
bors
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Sep 6, 2016
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📌 Commit 0520698 has been approved by |
nagisa
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Sep 6, 2016
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@Mark-Simulacrum I feel like status quo is quite all right. As far as MIR passes are concerned, this PR will make them appear automatically as they are registered. As far as other things go, addition to top-level pipeline gets a timing entry by convention and when there’s some interest in more detailed data, the measurements can be introduced in a similar manner to this PR. |
bors
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Sep 7, 2016
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Sep 7, 2016
Count and report time taken by MIR passes There’s some desire for deeper introspectability into what MIR passes cost us. -Z time-passes after this PR: ``` Compiling test_shim v0.1.0 (file:///home/nagisa/Documents/rust/rust/src/rustc/test_shim) time: 0.000; rss: 29MB parsing time: 0.000; rss: 29MB configuration time: 0.000; rss: 29MB recursion limit time: 0.000; rss: 29MB crate injection time: 0.000; rss: 29MB plugin loading time: 0.000; rss: 29MB plugin registration time: 0.032; rss: 54MB expansion time: 0.000; rss: 54MB maybe building test harness time: 0.000; rss: 54MB assigning node ids time: 0.000; rss: 54MB checking for inline asm in case the target doesn't support it time: 0.000; rss: 54MB complete gated feature checking time: 0.000; rss: 54MB collecting defs time: 0.004; rss: 54MB external crate/lib resolution time: 0.000; rss: 54MB early lint checks time: 0.000; rss: 54MB AST validation time: 0.001; rss: 54MB name resolution time: 0.000; rss: 54MB lowering ast -> hir time: 0.000; rss: 56MB indexing hir time: 0.000; rss: 56MB attribute checking time: 0.000; rss: 56MB language item collection time: 0.000; rss: 56MB lifetime resolution time: 0.000; rss: 56MB looking for entry point time: 0.000; rss: 56MB looking for plugin registrar time: 0.000; rss: 56MB region resolution time: 0.000; rss: 56MB loop checking time: 0.000; rss: 56MB static item recursion checking time: 0.000; rss: 56MB compute_incremental_hashes_map time: 0.000; rss: 56MB load_dep_graph time: 0.000; rss: 56MB type collecting time: 0.000; rss: 56MB variance inference time: 0.011; rss: 59MB coherence checking time: 0.000; rss: 59MB wf checking time: 0.000; rss: 59MB item-types checking time: 0.000; rss: 59MB item-bodies checking time: 0.000; rss: 59MB drop-impl checking time: 0.000; rss: 59MB const checking time: 0.000; rss: 59MB privacy checking time: 0.000; rss: 59MB stability index time: 0.000; rss: 59MB intrinsic checking time: 0.000; rss: 59MB effect checking time: 0.000; rss: 59MB match checking time: 0.000; rss: 59MB liveness checking time: 0.000; rss: 59MB rvalue checking time: 0.000; rss: 59MB MIR dump time: 0.000; rss: 59MB SimplifyCfg time: 0.000; rss: 59MB QualifyAndPromoteConstants time: 0.000; rss: 59MB TypeckMir time: 0.000; rss: 59MB SimplifyBranches time: 0.000; rss: 59MB SimplifyCfg time: 0.000; rss: 59MB MIR passes time: 0.000; rss: 59MB borrow checking time: 0.000; rss: 59MB reachability checking time: 0.000; rss: 59MB death checking time: 0.000; rss: 59MB stability checking time: 0.000; rss: 59MB unused lib feature checking time: 0.000; rss: 59MB lint checking time: 0.000; rss: 59MB resolving dependency formats time: 0.000; rss: 59MB NoLandingPads time: 0.000; rss: 59MB SimplifyCfg time: 0.000; rss: 59MB EraseRegions time: 0.000; rss: 59MB AddCallGuards time: 0.000; rss: 59MB ElaborateDrops time: 0.000; rss: 59MB NoLandingPads time: 0.000; rss: 59MB SimplifyCfg time: 0.000; rss: 59MB Deaggregator time: 0.000; rss: 59MB AddCallGuards time: 0.000; rss: 59MB PreTrans time: 0.000; rss: 59MB Prepare MIR codegen passes time: 0.000; rss: 59MB write metadata time: 0.000; rss: 61MB translation item collection time: 0.000; rss: 61MB codegen unit partitioning time: 0.000; rss: 61MB internalize symbols time: 0.007; rss: 61MB translation time: 0.000; rss: 61MB assert dep graph time: 0.000; rss: 61MB serialize dep graph time: 0.000; rss: 61MB llvm function passes [2] time: 0.000; rss: 61MB llvm function passes [3] time: 0.000; rss: 61MB llvm function passes [1] time: 0.000; rss: 61MB llvm function passes [0] time: 0.000; rss: 61MB llvm module passes [2] time: 0.000; rss: 61MB llvm module passes [1] time: 0.000; rss: 61MB llvm module passes [0] time: 0.000; rss: 61MB llvm module passes [3] time: 0.001; rss: 62MB codegen passes [1] time: 0.001; rss: 62MB codegen passes [2] time: 0.001; rss: 62MB codegen passes [0] time: 0.001; rss: 62MB codegen passes [3] time: 0.001; rss: 63MB codegen passes [1] time: 0.005; rss: 63MB LLVM passes time: 0.000; rss: 63MB serialize work products time: 0.001; rss: 63MB linking ``` r? @eddyb or @nikomatsakis cc @nrc, @Mark-Simulacrum
bors
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Sep 7, 2016
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There’s some desire for deeper introspectability into what MIR passes cost us.
-Z time-passes after this PR:
r? @eddyb or @nikomatsakis
cc @nrc, @Mark-Simulacrum