daiyousei-qz added inline comments.
================
Comment at: clang-tools-extra/clangd/InlayHints.cpp:616
+ Position HintStart = sourceLocToPosition(SM, BraceRange.getEnd());
+ Position HintEnd = {HintStart.line,
+ HintStart.character +
----------------
sammccall wrote:
> please don't do this, call sourceLocToPosition unless you have benchmarks
> showing this is a bottleneck on real-world code.
>
> `lspLength` and direct manipulation of line/character is unneccesarily subtle.
> (If the performance matters, there's no need to be computing the LSP line of
> the lbrace at all - we never use it - this is one reason I think this
> function has the wrong signature)
I argue performance does matter here. I eye-balled inlay hint compute time in
clangd's output window from vscode. On "./clang/lib/Sema/SemaOpenMP.cpp" which
is around 1MB, using `sourceLocToPosition` roughly takes around 1250~1350ms.
However, using two `offsetLocToPosition` usually use 1400~1500ms. I think
100ms delta is already a noticeable difference.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D150635/new/
https://reviews.llvm.org/D150635
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