runtime: rename gothrow to throw

Rename "gothrow" to "throw" now that the C version of "throw"
is no longer needed.

This change is purely mechanical except in panic.go where the
old version of "throw" has been deleted.

sed -i "" 's/[[:<:]]gothrow[[:>:]]/throw/g' runtime/*.go

Change-Id: Icf0752299c35958b92870a97111c67bcd9159dc3
Reviewed-on: https://go-review.googlesource.com/2150
Reviewed-by: Minux Ma <minux@golang.org>
Reviewed-by: Dave Cheney <dave@cheney.net>

1 files changed, 18 insertions, 0 deletions

diff --git a/src/runtime/stack_test.go b/src/runtime/stack_test.go
index 652c72eeed..17e33327ae 100644
--- a/src/runtime/stack_test.go
+++ b/src/runtime/stack_test.go
@@ -395,3 +395,21 @@ func TestStackPanic(t *testing.T) {
 	useStack(32)
 	panic("test panic")
 }
+
+func BenchmarkStackCopy(b *testing.B) {
+	c := make(chan bool)
+	for i := 0; i < b.N; i++ {
+		go func() {
+			count(1000000)
+			c <- true
+		}()
+		<-c
+	}
+}
+
+func count(n int) int {
+	if n == 0 {
+		return 0
+	}
+	return 1 + count(n-1)
+}