[Webkit-unassigned] [Bug 130106] New: DYEBench hits an assertion in JSC::DFG::DCEPhase::fixupBlock DFGDCEPhase.cpp(186)

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Tue Mar 11 18:07:20 PDT 2014


https://bugs.webkit.org/show_bug.cgi?id=130106

           Summary: DYEBench hits an assertion in
                    JSC::DFG::DCEPhase::fixupBlock DFGDCEPhase.cpp(186)
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: rniwa at webkit.org
                CC: ggaren at apple.com, fpizlo at apple.com,
                    mhahnenberg at apple.com
        Depends on: 130069


With the patch on the bug 130069, we're not hitting the following assertion:

SHOULD NEVER BE REACHED
/Volumes/Data/webkit3/Source/JavaScriptCore/dfg/DFGDCEPhase.cpp(186) : void JSC::DFG::DCEPhase::fixupBlock(JSC::DFG::BasicBlock *)
1   0x10c95c3d0 WTFCrash
2   0x10c3f16a1 JSC::DFG::DCEPhase::fixupBlock(JSC::DFG::BasicBlock*)
3   0x10c3f11ce JSC::DFG::DCEPhase::run()
4   0x10c3f03a5 bool JSC::DFG::runAndLog<JSC::DFG::DCEPhase>(JSC::DFG::DCEPhase&)
5   0x10c3f032e bool JSC::DFG::runPhase<JSC::DFG::DCEPhase>(JSC::DFG::Graph&)
6   0x10c3f02e8 JSC::DFG::performDCE(JSC::DFG::Graph&)
7   0x10c4a6360 JSC::DFG::Plan::compileInThreadImpl(JSC::DFG::LongLivedState&)
8   0x10c4a5a94 JSC::DFG::Plan::compileInThread(JSC::DFG::LongLivedState&, JSC::DFG::ThreadData*)
9   0x10c548ef0 JSC::DFG::Worklist::runThread(JSC::DFG::ThreadData*)
10  0x10c547b44 JSC::DFG::Worklist::threadFunction(void*)
11  0x10c9abbf0 WTF::threadEntryPoint(void*)
12  0x10c9ac878 WTF::wtfThreadEntryPoint(void*)
13  0x7fff8f8d4899 _pthread_body
14  0x7fff8f8d472a _pthread_struct_init
15  0x7fff8f8d8fc9 thread_start

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