cmd/gc: update runtime.go for new map implementation.

R=golang-dev, bradfitz, r
CC=golang-dev
https://golang.org/cl/8051044

src/cmd/gc/builtin.c

+// AUTO-GENERATED by mkbuiltin; DO NOT EDIT
 char *runtimeimport =
 	"package runtime\n"
 	"import runtime \"runtime\"\n"

src/cmd/gc/mkbuiltin

@@ -19,6 +19,7 @@ fi
 GC=${GOCHAR}g
 gcc -o mkbuiltin1 mkbuiltin1.c
 rm -f _builtin.c
+echo "// AUTO-GENERATED by mkbuiltin; DO NOT EDIT" >>_builtin.c
 for i in runtime unsafe
 do
 	go tool $GC -A $i.go

src/cmd/gc/runtime.go

@@ -89,7 +89,13 @@ func equal(typ *byte, x1, x2 any) (ret bool)
 // *byte is really *runtime.Type
 func makemap(mapType *byte, hint int64) (hmap map[any]any)
 func mapaccess1(mapType *byte, hmap map[any]any, key any) (val any)
+func mapaccess1_fast32(mapType *byte, hmap map[any]any, key any) (val *any)
+func mapaccess1_fast64(mapType *byte, hmap map[any]any, key any) (val *any)
+func mapaccess1_faststr(mapType *byte, hmap map[any]any, key any) (val *any)
 func mapaccess2(mapType *byte, hmap map[any]any, key any) (val any, pres bool)
+func mapaccess2_fast32(mapType *byte, hmap map[any]any, key any) (val *any, pres bool)
+func mapaccess2_fast64(mapType *byte, hmap map[any]any, key any) (val *any, pres bool)
+func mapaccess2_faststr(mapType *byte, hmap map[any]any, key any) (val *any, pres bool)
 func mapassign1(mapType *byte, hmap map[any]any, key any, val any)
 func mapiterinit(mapType *byte, hmap map[any]any, hiter *any)
 func mapdelete(mapType *byte, hmap map[any]any, key any)