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Optimize object expressions and type conversions #521

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merged 1 commit into from Jul 11, 2018

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lahma commented Jul 10, 2018

  • fast path for common object expression transformation from properties to new object
  • some conversion tweaks for common cases
  • constructors for JsValues that are aleady resolved, no need to create them again

UncacheableExpressionsBenchmark

Diff Method N Mean Gen 0 Gen 1 Allocated
Old Benchmark 500 296.8 ms 36812.5000 125.0000 147.43 MB
New 278.6 ms (-6%) 33750.0000 (-8%) - 135.01 MB (-8%)

@sebastienros sebastienros merged commit c6881dc into sebastienros:dev Jul 11, 2018

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@lahma lahma deleted the lahma:perf/faster-object-expressions branch Jul 12, 2018

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