internal/task: remove coroutines

src/runtime/chan.go

@@ -15,13 +15,13 @@ package runtime
 //     closed:
 //       The channel is closed. Sends will panic, receives will get a zero value
 //       plus optionally the indication that the channel is zero (with the
-//       commao-ok value in the coroutine).
+//       comma-ok value in the task).
 //
 // A send/recv transmission is completed by copying from the data element of the
-// sending coroutine to the data element of the receiving coroutine, and setting
+// sending task to the data element of the receiving task, and setting
 // the 'comma-ok' value to true.
 // A receive operation on a closed channel is completed by zeroing the data
-// element of the receiving coroutine and setting the 'comma-ok' value to false.
+// element of the receiving task and setting the 'comma-ok' value to false.
 
 import (
 	"internal/task"

src/runtime/scheduler.go

@@ -6,13 +6,9 @@ package runtime
 // were added to the queue (first-in, first-out). It also contains a sleep queue
 // with sleeping goroutines in order of when they should be re-activated.
 //
-// The scheduler is used both for the coroutine based scheduler and for the task
-// based scheduler (see compiler/goroutine-lowering.go for a description). In
-// both cases, the 'task' type is used to represent one goroutine. In the case
-// of the task based scheduler, it literally is the goroutine itself: a pointer
-// to the bottom of the stack where some important fields are kept. In the case
-// of the coroutine-based scheduler, it is the coroutine pointer (a *i8 in
-// LLVM).
+// The scheduler is used both for the asyncify based scheduler and for the task
+// based scheduler. In both cases, the 'internal/task.Task' type is used to represent one
+// goroutine.
 
 import (
 	"internal/task"

src/runtime/scheduler_coroutines.go

@@ -1,9 +0,0 @@
-// +build scheduler.coroutines
-
-package runtime
-
-// getSystemStackPointer returns the current stack pointer of the system stack.
-// This is always the current stack pointer.
-func getSystemStackPointer() uintptr {
-	return getCurrentStackPointer()
-}