fix: debug info print with depth #5903
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@kripken |
kripken
reviewed
Aug 28, 2023
| @@ -170,6 +170,8 @@ struct PrintSExpression : public UnifiedExpressionVisitor<PrintSExpression> { | |||
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| std::vector<HeapType> heapTypes; | |||
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| unsigned lastPrintIndent = 0; | |||
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Please add a comment explaining the motivation for tracking the print indent, maybe with an example? I am imagining something like this:
// Track the print indent so that we can see when it changes. That affects how we print debug annotations. In particular, we don't want to print repeated debug locations for children, like this:
//
// ;;@ file.cpp:20:4
// (block
// ;; no need to annotate here
// (nop)
//
// But we do want to print an annotation even if it repeats if it is not a child:
//
// ;;@ file.cpp:20:4
// (block
// )
// ;;@ file.cpp:20:4 - this is worth annotating
// (nop)
kripken
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Aug 28, 2023
kripken
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Aug 29, 2023
In general, full print mode should print out all the things to avoid confusion. It already did so for blocks (that the text format sometimes elides), types, etc. Doing it for debug info can avoid confusion when debugging (in fact, this was one of the main reasons I've been confused about how source maps work in Binaryen...). Also add a comment to the code just landed in #5903
radekdoulik
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Jul 12, 2024
Skip repeated identical debug info only of more-nested nodes. Before this PR we skipped sibling nodes and even parent nodes, which could be confusing. After this PR there is a more clear connection: child nodes have the same debug location as the parent, by default, and so there is no need to print it again.
radekdoulik
pushed a commit
to dotnet/binaryen
that referenced
this pull request
Jul 12, 2024
In general, full print mode should print out all the things to avoid confusion. It already did so for blocks (that the text format sometimes elides), types, etc. Doing it for debug info can avoid confusion when debugging (in fact, this was one of the main reasons I've been confused about how source maps work in Binaryen...). Also add a comment to the code just landed in WebAssembly#5903
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Split from #5547.
Focus on debug info print optimization.