[Webkit-unassigned] [Bug 149203] New: Fix asm.js errors in WebAssembly tests
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Tue Sep 15 19:01:48 PDT 2015
https://bugs.webkit.org/show_bug.cgi?id=149203
Bug ID: 149203
Summary: Fix asm.js errors in WebAssembly tests
Classification: Unclassified
Product: WebKit
Version: WebKit Nightly Build
Hardware: Unspecified
OS: Unspecified
Status: NEW
Severity: Normal
Priority: P2
Component: JavaScriptCore
Assignee: webkit-unassigned at lists.webkit.org
Reporter: sukolsak at gmail.com
Our WebAssembly implementation uses asm.js for testing. Using Firefox to parse asm.js reveals many errors that are not caught by pack-asmjs. For example,
- asm.js does not allow the use of the multiplication operator (*) to multiply two integers, because the result can be so large that some lower bits of precision are lost. Math.imul is used instead.
- an int variable must be coerced to either signed (via x|0) or unsigned (via x>>>0) before it's returned.
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