[Webkit-unassigned] [Bug 104807] Adds support for fromCharCode intrinsic
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Mon Apr 8 14:58:04 PDT 2013
https://bugs.webkit.org/show_bug.cgi?id=104807
--- Comment #24 from Vahag <vaag at ispras.ru> 2013-04-08 14:56:18 PST ---
(In reply to comment #19)
> (In reply to comment #17)
> > (From update of attachment 196949 [details] [details])
> > View in context: https://bugs.webkit.org/attachment.cgi?id=196949&action=review
> >
> > > Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp:2109
> > > + JITCompiler::Jump jmpAfter = m_jit.jump();
> > > +
> > > + isNotASCIICharacter.link(&m_jit);
> > > + JITCompiler::Jump jmpSlowCase = m_jit.jump();
> > > + addSlowPathGenerator(slowPathCall(jmpSlowCase, this, operationStringFromCharCode, scratchReg, propertyReg));
> > > +
> > > + jmpAfter.link(&m_jit);
> >
> > This is wrong. You should be passing isNotASCIICharacter as the first argument to slowPathCall(), and omitting the jmpAfter thing.
> >
> > > Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp:2110
> > > + speculationCheck(Uncountable, JSValueRegs(), 0, m_jit.branchTest32(MacroAssembler::Zero, scratchReg));
> >
> > Why?
>
It fails on some tests without this check, for example on stringSHA1 from browsemark.
> Fixed
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