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Auto merge of #112617 - lqd:dump-mir-dataflow, r=tmiasko
make mir dataflow graphviz dumps opt-in This should save some MIR traversals and allocations that are not really needed. Small win but noticeable locally. Let's see what LTO/PGO say. r? `@ghost`
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commit
c911e08514
@ -287,9 +287,11 @@ where
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let mut results = Results { analysis, entry_sets, _marker: PhantomData };
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let res = write_graphviz_results(tcx, body, &mut results, pass_name);
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if let Err(e) = res {
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error!("Failed to write graphviz dataflow results: {}", e);
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if tcx.sess.opts.unstable_opts.dump_mir_dataflow {
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let res = write_graphviz_results(tcx, &body, &mut results, pass_name);
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if let Err(e) = res {
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error!("Failed to write graphviz dataflow results: {}", e);
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}
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}
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results
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@ -299,7 +301,7 @@ where
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// Graphviz
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/// Writes a DOT file containing the results of a dataflow analysis if the user requested it via
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/// `rustc_mir` attributes.
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/// `rustc_mir` attributes and `-Z dump-mir-dataflow`.
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fn write_graphviz_results<'tcx, A>(
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tcx: TyCtxt<'tcx>,
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body: &mir::Body<'tcx>,
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@ -328,9 +330,7 @@ where
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io::BufWriter::new(fs::File::create(&path)?)
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}
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None if tcx.sess.opts.unstable_opts.dump_mir_dataflow
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&& dump_enabled(tcx, A::NAME, def_id) =>
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{
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None if dump_enabled(tcx, A::NAME, def_id) => {
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create_dump_file(tcx, ".dot", false, A::NAME, &pass_name.unwrap_or("-----"), body)?
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}
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