cmd/compile: intrinsify Ctz, Bswap on ARM

Atomic ops on ARM are implemented with kernel calls, so they are
not intrinsified.

Change-Id: I0e7cc2e5526ae1a3d24b4b89be1bd13db071f8ef
Reviewed-on: https://go-review.googlesource.com/28977
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>

1 files changed, 0 insertions, 19 deletions

diff --git a/test/intrinsic.dir/atomic.go b/test/intrinsic.dir/atomic.go
deleted file mode 100644
index 71468a1b38..0000000000
--- a/test/intrinsic.dir/atomic.go
+++ /dev/null
@@ -1,19 +0,0 @@
-// +build amd64
-
-// Copyright 2016 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 main
-
-import "sync/atomic"
-
-var x uint32
-
-func atomics() {
-	_ = atomic.LoadUint32(&x)             // ERROR "intrinsic substitution for LoadUint32"
-	atomic.StoreUint32(&x, 1)             // ERROR "intrinsic substitution for StoreUint32"
-	atomic.AddUint32(&x, 1)               // ERROR "intrinsic substitution for AddUint32"
-	atomic.SwapUint32(&x, 1)              // ERROR "intrinsic substitution for SwapUint32"
-	atomic.CompareAndSwapUint32(&x, 1, 2) // ERROR "intrinsic substitution for CompareAndSwapUint32"
-}