const runtime.logHeapArenaBytes

3 uses

	runtime (current package)
		malloc.go#L254: 	heapArenaBytes = 1 << logHeapArenaBytes
		malloc.go#L259: 	logHeapArenaBytes = (6+20)*(_64bit*(1-goos.IsWindows)*(1-goarch.IsWasm)*(1-goos.IsIos*goarch.IsArm64)) + (2+20)*(_64bit*goos.IsWindows) + (2+20)*(1-_64bit) + (2+20)*goarch.IsWasm + (2+20)*goos.IsIos*goarch.IsArm64
		malloc.go#L288: 	arenaL2Bits = heapAddrBits - logHeapArenaBytes - arenaL1Bits