"" + x where x is not a string should be optimized by the DFG to some manner of ToString conversion
https://bugs.webkit.org/show_bug.cgi?id=112845
Reviewed by Mark Hahnenberg.
I like to do "" + x. So I decided to make DFG recognize it, and related idioms.
* dfg/DFGFixupPhase.cpp:
(JSC::DFG::FixupPhase::fixupNode):
(JSC::DFG::FixupPhase::fixupToPrimitive):
(FixupPhase):
(JSC::DFG::FixupPhase::fixupToString):
(JSC::DFG::FixupPhase::attemptToMakeFastStringAdd):
* dfg/DFGPredictionPropagationPhase.cpp:
(JSC::DFG::resultOfToPrimitive):
(DFG):
(JSC::DFG::PredictionPropagationPhase::propagate):
* dfg/DFGPredictionPropagationPhase.h:
(DFG):
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@146400 268f45cc-cd09-0410-ab3c-d52691b4dbfc
4 files changed
