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perf(webidl): optimize dictionary converters #16594

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perf(webidl): optimize dictionary converters #16594

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littledivy
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5x-11x improvement across inputs.

Before:

test converter_object               ... bench:      40,076 ns/iter (+/- 2,482)
test converter_undefined            ... bench:      25,025 ns/iter (+/- 2,521)
test handwritten_baseline_object    ... bench:       3,444 ns/iter (+/- 164)
test handwritten_baseline_undefined ... bench:       3,375 ns/iter (+/- 76)

After:

test converter_object               ... bench:       3,800 ns/iter (+/- 371)
test converter_undefined            ... bench:       3,769 ns/iter (+/- 561)
test handwritten_baseline_object    ... bench:       3,503 ns/iter (+/- 1,010)
test handwritten_baseline_undefined ... bench:       3,343 ns/iter (+/- 124)

This was referenced Jan 15, 2023
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littledivy added a commit that referenced this pull request Jan 15, 2023
@littledivy
chore(ext/webidl): Add dictionary converter microbenchmark (#17435)
8f321a8 
This commits add a `webidl.createDictionaryConverter` converter
microbenchmark.

There are 2 PRs currently open that need a microbenchmark for webidl
dictionary converter. See #16594
and #16407

Closes #17436
@littledivy littledivy marked this pull request as ready for review January 15, 2023 14:13
bartlomieju
bartlomieju reviewed Jan 15, 2023
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ext/webidl/00_webidl.js
Comment on lines +685 to +690
return new Function(
"makeException",
"type",
"defaultValues",
"allMembers",
`return function (V, opts = {}) {
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This will cause the process to fail if --disallow-code-generation-from-strings flag is used (#16535)

bartlomieju pushed a commit that referenced this pull request Jan 16, 2023
@littledivy @bartlomieju
chore(ext/webidl): Add dictionary converter microbenchmark (#17435)
7f65a5d 
This commits add a `webidl.createDictionaryConverter` converter
microbenchmark.

There are 2 PRs currently open that need a microbenchmark for webidl
dictionary converter. See #16594
and #16407

Closes #17436
aapoalas
aapoalas requested changes Mar 25, 2023
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I wonder if there isn't anything that could be done to optimize these without running afoul of the eval issue.

If not, should this be closed?

@littledivy littledivy mentioned this pull request Mar 25, 2023
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Uhh this is a nice optimization. we need to somehow do this without JS eval :(

Opened #18431

@littledivy littledivy closed this Mar 25, 2023
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@littledivy @bartlomieju @aapoalas