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Comment: Microsoft Responds (Score 5, Informative) 111

by TimSneath (#34879580) Attached to: How To Get Around the Holes In IE9 Beta's Implementation of Canvas

Hi there, thank you for the post. I just wanted to add a few observations on behalf of the Internet Explorer team.

Firstly, no browser offers a perfect implementation of the Canvas 2D API specification to date - we've documented and shared a few examples from our test suites here: http://samples.msdn.microsoft.com/ietestcenter/#html5Canvas

As has been well noted, the IE9 build tested was our beta.

Secondly, in response to the specific issues raised, Giorgio Sardo has posted a response on his blog here:
      http://blogs.msdn.com/b/giorgio/archive/2011/01/14/building-great-browsers-together.aspx

We'll update this entry over time.

Thanks for listening,

Tim Sneath | Microsoft Corp.

Comment: Dead Code Elimination (Score 3, Informative) 360

by TimSneath (#34260932) Attached to: Internet Explorer 9 Caught Cheating In SunSpider

Hi, we've posted an official response and explanation at the bottom of this post:
http://blogs.msdn.com/b/ie/archive/2010/11/17/html5-and-real-world-site-performance-seventh-ie9-platform-preview-available-for-developers.aspx

Bottom line - we built an optimizing compiler into the Chakra JavaScript engine that eliminates dead code where it finds it.

It's a fun conspiracy theory that we'd somehow 'game' SunSpider in this way, but it doesn't make sense that we'd go to all that risk to cheat on just one test out of 26.

Best wishes, Tim Sneath | Microsoft

... though his invention worked superbly -- his theory was a crock of sewage from beginning to end. -- Vernor Vinge, "The Peace War"

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