RESOLVED DUPLICATE of bug 124092 Bug 123637
"Unsupported speculation use kind: FinalObject" in FTL::LowerDFGToLLVM::compilePhantom() running v8-v6/v8-crypto.js.default-ftl 
https://bugs.webkit.org/show_bug.cgi?id=123637
Summary "Unsupported speculation use kind: FinalObject" in FTL::LowerDFGToLLVM::compi...
Filip Pizlo
Reported 2013-11-01 14:43:52 PDT
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Filip Pizlo
Comment 1 2013-11-02 11:45:33 PDT
This bug is super elusive. I can't repro. It's strange since FinalObjectUse is only used for Identity's that ToThis's are replaced with.
Filip Pizlo
Comment 2 2013-11-08 18:41:20 PST
This bug really represents some weirdness, where even though we didn't see a FinalObjectUse at the point where we decide to start the FTL phases, we end up introducing a FinalObjectUse later. That shouldn't happen. But, we won't ever see this bug again after https://bugs.webkit.org/show_bug.cgi?id=124092. So, I'm marking it as a dupe. *** This bug has been marked as a duplicate of bug 124092 ***
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