// asmcheck

// Copyright 2021 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

func andn64(x, y int64) int64 {
	// amd64/v3:"ANDNQ"
	return x &^ y
}

func andn32(x, y int32) int32 {
	// amd64/v3:"ANDNL"
	return x &^ y
}

func blsi64(x int64) int64 {
	// amd64/v3:"BLSIQ"
	return x & -x
}

// 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

// This file contains codegen tests related to arithmetic
// simplifications and optimizations on float types.
// For codegen tests on integer types, see arithmetic.go.

// --------------------- //
//    Strength-reduce    //
// --------------------- //

// asmcheck

// Copyright 2019 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

//go:noinline
func dummy() {}

// Signed 64-bit compare-and-branch.
func si64(x, y chan int64) {
	// s390x:"CGRJ\t[$](2|4), R[0-9]+, R[0-9]+, "
	for <-x < <-y {
		dummy()
	}

	// s390x:"CL?GRJ\t[$]8, R[0-9]+, R[0-9]+, "
	for <-x == <-y {

// asmcheck

// Copyright 2019 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

// Notes:
// - these examples use channels to provide a source of
//   unknown values that cannot be optimized away
// - these examples use for loops to force branches
//   backward (predicted taken)

// ---------------------------------- //

	}
	return env
}

// asmChecks represents all the asmcheck checks present in a test file
// The outer map key is the build triplet in which the checks must be performed.
// The inner map key represent the source file line ("filename.go:1234") at which the
// checks must be performed.
type asmChecks map[buildEnv]map[string][]wantedAsmOpcode

against a set of regexps to be specified in comments that follow a
special syntax (described below). The test driver is implemented as
an action within the GOROOT/test test suite, called "asmcheck".

The codegen harness is part of the all.bash test suite, but for
performance reasons only the codegen tests for the host machine's
GOARCH are enabled by default, and only on GOOS=linux.

// 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 "math/bits"

var sval64 [8]int64
var sval32 [8]int32
var sval16 [8]int16
var sval8 [8]int8
var val64 [8]uint64
var val32 [8]uint32
var val16 [8]uint16
var val8 [8]uint8

// Avoid zero/sign extensions following a load

// 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 "math"

var sink64 [8]float64

func approx(x float64) {
	// amd64/v2:-".*x86HasSSE41" amd64/v3:-".*x86HasSSE41"
	// amd64:"ROUNDSD\t[$]2"
	// s390x:"FIDBR\t[$]6"
	// arm64:"FRINTPD"
	// ppc64x:"FRIP"
	// wasm:"F64Ceil"

// 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

// These tests check that mapaccess calls are not used.
// Issues #23661 and #24364.

func mapCompoundAssignmentInt8() {
	m := make(map[int8]int8, 0)
	var k int8 = 0

	// 386:-".*mapaccess"
	// amd64:-".*mapaccess"
	// arm:-".*mapaccess"

// 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 "unsafe"

// This file contains code generation tests related to the handling of
// slice types.

// ------------------ //
//      Clear         //
// ------------------ //

// Issue #5373 optimize memset idiom