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reflect: mark map access functions as go:noescape

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benchmark                                  old allocs     new allocs     delta
BenchmarkSkipValue                         14914          14202          -4.77%

Change-Id: I40e1fe8843cc6a099a2abfcd814ecc2a2d6a5b1f
Reviewed-on: https://go-review.googlesource.com/3744
Reviewed-by: Keith Randall <khr@golang.org>
This commit is contained in:
Dmitry Vyukov 2015-02-03 11:54:11 +03:00
parent e604c6e293
commit 84e2567537
1 changed files with 15 additions and 0 deletions
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15
src/reflect/value.go
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@ -2439,12 +2439,27 @@ func chansend(t *rtype, ch unsafe.Pointer, val unsafe.Pointer, nb bool) bool
func makechan(typ *rtype, size uint64) (ch unsafe.Pointer)
func makemap(t *rtype) (m unsafe.Pointer)
//go:noescape
func mapaccess(t *rtype, m unsafe.Pointer, key unsafe.Pointer) (val unsafe.Pointer)
func mapassign(t *rtype, m unsafe.Pointer, key, val unsafe.Pointer)
//go:noescape
func mapdelete(t *rtype, m unsafe.Pointer, key unsafe.Pointer)
// m escapes into the return value, but the caller of mapiterinit
// doesn't let the return value escape.
//go:noescape
func mapiterinit(t *rtype, m unsafe.Pointer) unsafe.Pointer
//go:noescape
func mapiterkey(it unsafe.Pointer) (key unsafe.Pointer)
//go:noescape
func mapiternext(it unsafe.Pointer)
//go:noescape
func maplen(m unsafe.Pointer) int
// call calls fn with a copy of the n argument bytes pointed at by arg.