all: remove GOEXPERIMENT=swissmap

For #54766.

Change-Id: I6a6a636c40b5fe2e8b0d4a5e23933492bc8bb76e
Reviewed-on: https://go-review.googlesource.com/c/go/+/691595
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@golang.org>

1 files changed, 54 insertions, 0 deletions

diff --git a/src/runtime/map_fast64.go b/src/runtime/map_fast64.go
new file mode 100644
index 0000000000..5de22a5bea
--- /dev/null
+++ b/src/runtime/map_fast64.go
@@ -0,0 +1,54 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package runtime
+
+import (
+	"internal/abi"
+	"internal/runtime/maps"
+	"unsafe"
+)
+
+// Functions below pushed from internal/runtime/maps.
+
+//go:linkname mapaccess1_fast64
+func mapaccess1_fast64(t *abi.SwissMapType, m *maps.Map, key uint64) unsafe.Pointer
+
+// mapaccess2_fast64 should be an internal detail,
+// but widely used packages access it using linkname.
+// Notable members of the hall of shame include:
+//   - github.com/ugorji/go/codec
+//
+// Do not remove or change the type signature.
+// See go.dev/issue/67401.
+//
+//go:linkname mapaccess2_fast64
+func mapaccess2_fast64(t *abi.SwissMapType, m *maps.Map, key uint64) (unsafe.Pointer, bool)
+
+// mapassign_fast64 should be an internal detail,
+// but widely used packages access it using linkname.
+// Notable members of the hall of shame include:
+//   - github.com/bytedance/sonic
+//   - github.com/ugorji/go/codec
+//
+// Do not remove or change the type signature.
+// See go.dev/issue/67401.
+//
+//go:linkname mapassign_fast64
+func mapassign_fast64(t *abi.SwissMapType, m *maps.Map, key uint64) unsafe.Pointer
+
+// mapassign_fast64ptr should be an internal detail,
+// but widely used packages access it using linkname.
+// Notable members of the hall of shame include:
+//   - github.com/bytedance/sonic
+//   - github.com/ugorji/go/codec
+//
+// Do not remove or change the type signature.
+// See go.dev/issue/67401.
+//
+//go:linkname mapassign_fast64ptr
+func mapassign_fast64ptr(t *abi.SwissMapType, m *maps.Map, key unsafe.Pointer) unsafe.Pointer
+
+//go:linkname mapdelete_fast64
+func mapdelete_fast64(t *abi.SwissMapType, m *maps.Map, key uint64)