const runtime.logHeapArenaBytes

3 uses

	runtime (current package)
		malloc.go#L245: 	heapArenaBytes = 1 << logHeapArenaBytes
		malloc.go#L250: 	logHeapArenaBytes = (6+20)*(_64bit*(1-sys.GoosWindows)*(1-sys.GoarchWasm)) + (2+20)*(_64bit*sys.GoosWindows) + (2+20)*(1-_64bit) + (2+20)*sys.GoarchWasm
		malloc.go#L279: 	arenaL2Bits = heapAddrBits - logHeapArenaBytes - arenaL1Bits