735 profile_taken_branch(jsr_bci);
736
737 // The way we do things now, there is only one successor block
738 // for the jsr, because the target code is cloned by ciTypeFlow.
739 Block* target = successor_for_bci(jsr_bci);
740
741 // What got pushed?
742 const Type* ret_addr = target->peek();
743 assert(ret_addr->singleton(), "must be a constant (cloned jsr body)");
744
745 // Effect on jsr on stack
746 push(_gvn.makecon(ret_addr));
747
748 // Flow to the jsr.
749 merge(jsr_bci);
750 }
751
752 // Handle ret bytecode
753 void Parse::do_ret() {
754 // Find to whom we return.
755 #if 0 // %%%% MAKE THIS WORK
756 Node* con = local();
757 const TypePtr* tp = con->bottom_type()->isa_ptr();
758 assert(tp && tp->singleton(), "");
759 int return_bci = (int) tp->get_con();
760 merge(return_bci);
761 #else
762 assert(block()->num_successors() == 1, "a ret can only go one place now");
763 Block* target = block()->successor_at(0);
764 assert(!target->is_ready(), "our arrival must be expected");
765 profile_ret(target->flow()->start());
766 int pnum = target->next_path_num();
767 merge_common(target, pnum);
768 #endif
769 }
770
771 //--------------------------dynamic_branch_prediction--------------------------
772 // Try to gather dynamic branch prediction behavior. Return a probability
773 // of the branch being taken and set the "cnt" field. Returns a -1.0
774 // if we need to use static prediction for some reason.
775 float Parse::dynamic_branch_prediction(float &cnt) {
776 ResourceMark rm;
777
778 cnt = COUNT_UNKNOWN;
779
780 // Use MethodData information if it is available
781 // FIXME: free the ProfileData structure
782 ciMethodData* methodData = method()->method_data();
783 if (!methodData->is_mature()) return PROB_UNKNOWN;
784 ciProfileData* data = methodData->bci_to_data(bci());
785 if (!data->is_JumpData()) return PROB_UNKNOWN;
786
787 // get taken and not taken values
788 int taken = data->as_JumpData()->taken();
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735 profile_taken_branch(jsr_bci);
736
737 // The way we do things now, there is only one successor block
738 // for the jsr, because the target code is cloned by ciTypeFlow.
739 Block* target = successor_for_bci(jsr_bci);
740
741 // What got pushed?
742 const Type* ret_addr = target->peek();
743 assert(ret_addr->singleton(), "must be a constant (cloned jsr body)");
744
745 // Effect on jsr on stack
746 push(_gvn.makecon(ret_addr));
747
748 // Flow to the jsr.
749 merge(jsr_bci);
750 }
751
752 // Handle ret bytecode
753 void Parse::do_ret() {
754 // Find to whom we return.
755 assert(block()->num_successors() == 1, "a ret can only go one place now");
756 Block* target = block()->successor_at(0);
757 assert(!target->is_ready(), "our arrival must be expected");
758 profile_ret(target->flow()->start());
759 int pnum = target->next_path_num();
760 merge_common(target, pnum);
761 }
762
763 //--------------------------dynamic_branch_prediction--------------------------
764 // Try to gather dynamic branch prediction behavior. Return a probability
765 // of the branch being taken and set the "cnt" field. Returns a -1.0
766 // if we need to use static prediction for some reason.
767 float Parse::dynamic_branch_prediction(float &cnt) {
768 ResourceMark rm;
769
770 cnt = COUNT_UNKNOWN;
771
772 // Use MethodData information if it is available
773 // FIXME: free the ProfileData structure
774 ciMethodData* methodData = method()->method_data();
775 if (!methodData->is_mature()) return PROB_UNKNOWN;
776 ciProfileData* data = methodData->bci_to_data(bci());
777 if (!data->is_JumpData()) return PROB_UNKNOWN;
778
779 // get taken and not taken values
780 int taken = data->as_JumpData()->taken();
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