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https://github.com/LadybirdBrowser/ladybird
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cd2576c031
When emitting block declaration instantiation, we were not calling set_local_initialized() after writing block-scoped function declarations to local variables via Mov. This caused unnecessary ThrowIfTDZ checks to be emitted when those locals were later read. Block-scoped function declarations are always initialized at block entry (via NewFunction + Mov), so TDZ checks for them are redundant.
11 lines
151 B
JavaScript
11 lines
151 B
JavaScript
"use strict";
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function test() {
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let result;
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{
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function foo() { return 42; }
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result = foo();
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}
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return result;
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}
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test();
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