[Webkit-unassigned] [Bug 40179] New: Re-enable JIT_OPTIMIZE_NATIVE_CALL on MIPS

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Fri Jun 4 11:58:42 PDT 2010


           Summary: Re-enable JIT_OPTIMIZE_NATIVE_CALL on MIPS
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: fu at mips.com
                CC: ggaren at apple.com

Hi All,

  I will submit a patch to re-enable JIT_OPTIMIZE_NATIVE_CALL on MIPS.
One issue that I have is in JITOpcodes.cpp.
JIT::Label JIT::privateCompileCTINativeCall(JSGlobalData* globalData, bool isConstruct)
    poke(callFrameRegister, 1 + OBJECT_OFFSETOF(struct JITStackFrame, callFrame) / sizeof (void*)); <-------


    return nativeCallThunk;

Why do we put callFrameRegister to the stack location of 1 + OBJECT_OFFSETOF(struct JITStackFrame, callFrame) / sizeof (void*)?
Previously, we put it to the location of OBJECT_OFFSETOF(struct JITStackFrame, callFrame) / sizeof (void*).



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