[Webkit-unassigned] [Bug 142575] [ARM] REGRESSION(181077): jsc-layout-tests.yaml/js/script-tests/array-length-shortening.js fails on AArch64

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Mon Mar 16 01:01:18 PDT 2015


--- Comment #4 from Yusuke Suzuki <utatane.tea at gmail.com> ---
Seeing the result,

1. builtin arrays work fine. pseudo arrays created by Object.create(Array.prototype) fail.
2. They behave like array.length is not shortened.

And major changes introduced by this patch is,

1. Enumeration phase includes pushTry/popTryAndEmitCatch to catch thrown errors & execute iterator.return method.
2. next() is rewritten in JavaScript. So there's chance to inline it. (previously, this function is written in ASM as intrinsic)

Since there's no JIT code changes, I think that I missed something in (1), BytecodeGenerator change.

Filip, does it fail on iOS Aarch64 build?
I don't have any Aarch64 devices, I cannot check it...

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