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go/test/codegen/copy.go
Lynn Boger 39fa301bdc test/codegen: enable more tests for ppc64/ppc64le
Adding cases for ppc64,ppc64le to the codegen tests
where appropriate.

Change-Id: Idf8cbe88a4ab4406a4ef1ea777bd15a58b68f3ed
Reviewed-on: https://go-review.googlesource.com/c/142557
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-10-16 19:00:53 +00:00

91 lines
1.7 KiB
Go

// asmcheck
// 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 codegen
import "runtime"
// Check small copies are replaced with moves.
func movesmall4() {
x := [...]byte{1, 2, 3, 4}
// 386:-".*memmove"
// amd64:-".*memmove"
// arm:-".*memmove"
// arm64:-".*memmove"
// ppc64:-".*memmove"
// ppc64le:-".*memmove"
copy(x[1:], x[:])
}
func movesmall7() {
x := [...]byte{1, 2, 3, 4, 5, 6, 7}
// 386:-".*memmove"
// amd64:-".*memmove"
// arm64:-".*memmove"
// ppc64:-".*memmove"
// ppc64le:-".*memmove"
copy(x[1:], x[:])
}
func movesmall16() {
x := [...]byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16}
// amd64:-".*memmove"
copy(x[1:], x[:])
}
var x [256]byte
// Check that large disjoint copies are replaced with moves.
func moveDisjointStack() {
var s [256]byte
// s390x:-".*memmove"
// amd64:-".*memmove"
copy(s[:], x[:])
runtime.KeepAlive(&s)
}
func moveDisjointArg(b *[256]byte) {
var s [256]byte
// s390x:-".*memmove"
// amd64:-".*memmove"
copy(s[:], b[:])
runtime.KeepAlive(&s)
}
func moveDisjointNoOverlap(a *[256]byte) {
// s390x:-".*memmove"
// amd64:-".*memmove"
copy(a[:], a[128:])
}
// Check that no branches are generated when the pointers are [not] equal.
func ptrEqual() {
// amd64:-"JEQ",-"JNE"
// ppc64:-"BEQ",-"BNE"
// ppc64le:-"BEQ",-"BNE"
// s390x:-"BEQ",-"BNE"
copy(x[:], x[:])
}
func ptrOneOffset() {
// amd64:-"JEQ",-"JNE"
// ppc64:-"BEQ",-"BNE"
// ppc64le:-"BEQ",-"BNE"
// s390x:-"BEQ",-"BNE"
copy(x[1:], x[:])
}
func ptrBothOffset() {
// amd64:-"JEQ",-"JNE"
// ppc64:-"BEQ",-"BNE"
// ppc64le:-"BEQ",-"BNE"
// s390x:-"BEQ",-"BNE"
copy(x[1:], x[2:])
}