Function defineLabel

test/fixtures/snapshot/typescript.js:103396–103404

* Defines a label, uses as the target of a Break operation.

()

         * Defines a label, uses as the target of a Break operation.
         */
        function defineLabel() {
            if (!labelOffsets) {
                labelOffsets = [];
            }
            var label = nextLabelId;
            nextLabelId++;
            labelOffsets[label] = -1;
            return label;
        }
        /**
         * Marks the current operation with the specified label.
         */