[Webkit-unassigned] [Bug 81428] Division optimizations fail to infer cases of truncated division and mishandle -2147483648/-1

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=81428





--- Comment #5 from Csaba Osztrogonac <ossy at webkit.org>  2012-03-20 04:16:25 PST ---
(From update of attachment 132748)
View in context: https://bugs.webkit.org/attachment.cgi?id=132748&action=review

Reopen, because it broke the 32 bit build. Unfortunately EWS didn't 
notice it, because -Werror was disabled because of an other bug. :(

> Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp:2486
> +        speculationCheck(Overflow, JSValueRegs(), NoNode, m_jit.branch32(JITCompiler::Equal, op1GPR, TrustedImm32(-2147483648)));

../../../../Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp:2486: error: this decimal constant is unsigned only in ISO C90

> Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp:2489
> +        JITCompiler::Jump notNeg2ToThe31 = m_jit.branch32(JITCompiler::Equal, op1GPR, TrustedImm32(-2147483648));

../../../../Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp:2489: error: this decimal constant is unsigned only in ISO C90

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