Bug 69565 - JavaScript tests should have coverage for corner cases of DFG speculation
Summary: JavaScript tests should have coverage for corner cases of DFG speculation
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: Tools / Tests (show other bugs)
Version: 528+ (Nightly build)
Hardware: All All
: P2 Normal
Assignee: Nobody
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-10-06 14:44 PDT by Filip Pizlo
Modified: 2011-10-06 14:44 PDT (History)
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Description Filip Pizlo 2011-10-06 14:44:34 PDT 
The JavaScriptCore DFG JIT compiler likes to speculate on a lot of fast cases of JavaScript execution, like that integer additions don't overflow, bitwise operations don't create numbers that are not representable using signed 32-bit integers, etc.  We only have limited test coverage for these cases, and that should be fixed.