Status: Untriaged
Owner: ----
New issue 4067 by [email protected]: trace-hydrogen doesn't trace
extended classes
https://code.google.com/p/v8/issues/detail?id=4067
Version: 4.4.44
OS: Linux
Architecture: x64
Using the following JS code snippet:
'use strict';
class A {
constructor() { }
}
class B extends A {
constructor() {
super();
}
}
for (var i = 0; i < 1e7; i++)
new B();
Then run with:
./out/x64.release/d8 --trace_hydrogen --trace_phase=Z --trace_deopt \
--code_comments --hydrogen_track_positions --redirect_code_traces \
--redirect_code_traces_to=code.asm --print_opt_code script.js
I would expect there to be a hydrogen.cfg and code.asm file, but there are
none. It seems that code traces to classes that use "extends" don't output
any information.
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