scheduler: task.Data made 64bit to avoid overflow

compiler/testdata/goroutine-cortex-m-qemu.ll

@@ -5,7 +5,7 @@ target triple = "armv7m-none-eabi"
 
 %runtime.channel = type { i32, i32, i8, %runtime.channelBlockedList*, i32, i32, i32, i8* }
 %runtime.channelBlockedList = type { %runtime.channelBlockedList*, %"internal/task.Task"*, %runtime.chanSelectState*, { %runtime.channelBlockedList*, i32, i32 } }
-%"internal/task.Task" = type { %"internal/task.Task"*, i8*, i32, %"internal/task.state" }
+%"internal/task.Task" = type { %"internal/task.Task"*, i8*, i64, %"internal/task.state" }
 %"internal/task.state" = type { i32, i32* }
 %runtime.chanSelectState = type { %runtime.channel*, i8* }
 

compiler/testdata/goroutine-wasm.ll

@@ -6,7 +6,7 @@ target triple = "wasm32--wasi"
 %runtime.funcValueWithSignature = type { i32, i8* }
 %runtime.channel = type { i32, i32, i8, %runtime.channelBlockedList*, i32, i32, i32, i8* }
 %runtime.channelBlockedList = type { %runtime.channelBlockedList*, %"internal/task.Task"*, %runtime.chanSelectState*, { %runtime.channelBlockedList*, i32, i32 } }
-%"internal/task.Task" = type { %"internal/task.Task"*, i8*, i32, %"internal/task.state" }
+%"internal/task.Task" = type { %"internal/task.Task"*, i8*, i64, %"internal/task.state" }
 %"internal/task.state" = type { i8* }
 %runtime.chanSelectState = type { %runtime.channel*, i8* }
 

src/internal/task/task.go

@@ -13,7 +13,7 @@ type Task struct {
 	Ptr unsafe.Pointer
 
 	// Data is a field which can be used for storing state information.
-	Data uint
+	Data uint64
 
 	// state is the underlying running state of the task.
 	state state

src/runtime/scheduler.go

@@ -88,7 +88,7 @@ func addSleepTask(t *task.Task, duration timeUnit) {
 			panic("runtime: addSleepTask: expected next task to be nil")
 		}
 	}
-	t.Data = uint(duration) // TODO: longer durations
+	t.Data = uint64(duration)
 	now := ticks()
 	if sleepQueue == nil {
 		scheduleLog("  -> sleep new queue")