[IDE] Pass a SourceRange instead of a CharSourceRange in SemaAnnotator::passReference
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ahoppen
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rintaro,
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tshortli
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…otator::passReference` Most `SemaAnnotator`s don’t actually care about the char source range. Instead, they only care about the start location of the reference, which is also included in `SourceRange`. Computing a `CharSourceRange` from a `SourceRange` is kind of expensive because it needs to start a new lexer. To avoid this overhead, pass `SourceRange` to `SemaAnnotator::passReference` and related functions and let the clients compute the `CharSourceRange` when needed. This reduces the overhead of index-while-building by about 10%.
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bnbarham
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Jun 4, 2025
| assert(Range.getByteLength() > 3); | ||
| assert(Range.str().starts_with("`_") || | ||
| Range.str().starts_with("`$")); | ||
| CharSourceRange CharRange = Lexer::getCharSourceRangeFromSourceRange( |
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Does VD not have its name?
| if (SeenDecls.insert(D).second) | ||
| tryDemangleDecl(D, Range, /*isRef=*/true); | ||
| tryDemangleDecl(D, CharRange, /*isRef=*/true); |
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Doesn't really matter since this is swift-ide-test, but looks like tryDemangleDecl only uses the range to get the name again 🤷
bnbarham
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Jun 4, 2025
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Most
SemaAnnotators don’t actually care about the char source range. Instead, they only care about the start location of the reference, which is also included inSourceRange. Computing aCharSourceRangefrom aSourceRangeis kind of expensive because it needs to start a new lexer.To avoid this overhead, pass
SourceRangetoSemaAnnotator::passReferenceand related functions and let the clients compute theCharSourceRangewhen needed.This reduces the overhead of index-while-building by about 10%.