const runtime.spanAllocPtrScalarBits

5 uses

	runtime (current package)
		mbitmap.go#L1871: 	s := mheap_.allocManual(pages, spanAllocPtrScalarBits)
		mbitmap.go#L1876: 	mheap_.freeManual(s, spanAllocPtrScalarBits)
		mheap.go#L885: 	spanAllocPtrScalarBits                      // unrolled GC prog bitmap span
		mheap.go#L1291: 	case spanAllocPtrScalarBits:
		mheap.go#L1480: 	case spanAllocPtrScalarBits: