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perf(codegen): outline postfix source mapping work (#26450)

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Keep the precedence and source-map availability checks in an inline wrapper, and move the remaining postfix mapping work into an `#[inline(never)]` helper. This keeps the call sites unchanged while separating the mapping work from the inline path.
This commit is contained in:
camc314
2026-09-08 15:30:30 +00:00
parent 1e5d5d7962
commit d198982c08
1 changed files with 17 additions and 4 deletions
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crates/oxc_codegen/src/lib.rs
+17 -4
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@@ -951,14 +951,27 @@ impl<'a> Codegen<'a> {
/// give every node a trailing end-mapping. Synthesized nodes whose `span.end`
/// has no source byte are skipped.
#[cfg(feature = "sourcemap")]
#[inline]
fn add_source_mapping_after_postfix(&mut self, span: Span, precedence: Precedence) {
#[inline(never)]
fn add_mapping(
sourcemap_builder: &mut SourcemapBuilder<'_>,
output: &[u8],
source_text: Option<&str>,
span: Span,
) {
if !span.is_empty()
&& matches!(output.last(), Some(b')' | b']'))
&& source_text.is_none_or(|src| (span.end as usize) < src.len())
{
sourcemap_builder.add_source_mapping(output, span.end, None);
}
}
if precedence == Precedence::Postfix
&& let Some(sourcemap_builder) = self.sourcemap_builder.as_mut()
&& !span.is_empty()
&& matches!(self.code.as_bytes().last(), Some(b')' | b']'))
&& self.source_text.is_none_or(|src| (span.end as usize) < src.len())
{
sourcemap_builder.add_source_mapping(self.code.as_bytes(), span.end, None);
add_mapping(sourcemap_builder, self.code.as_bytes(), self.source_text, span);
}
}