// And finally, fixup the flag user.
(CMPconst <t> [0] (Select0 z:((ADD|AND|ANDN|OR|SUB|NOR|XOR)CC x y))) => (Select1 <t> z)
(CMPconst <t> [0] (Select0 z:((ADDCCconst|ANDCCconst|NEGCC|CNTLZDCC|RLDICLCC) y))) => (Select1 <t> z)

// After trying to convert ANDconst to ANDCCconst above, if the CC result is not needed, try to avoid using
// ANDconst which clobbers CC.

// 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.

// Make sure CSE of multi-output opcodes works correctly
// with select0/1 operations.

package main

func div(d, r int64) int64 {
	if m := d % r; m > 0 {
		return d/r + 1
	}
	return d / r

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package ssa

// tightenTupleSelectors ensures that tuple selectors (Select0, Select1,
// and SelectN ops) are in the same block as their tuple generator. The
// function also ensures that there are no duplicate tuple selectors.
// These properties are expected by the scheduler but may not have

				r, _ := v.SqrtRatio(x, y)
				return r
			},
		},
		{
			name: "Select0",
			twoArgsF: func(v, x, y *Element) *Element {
				return v.Select(x, y, 0)
			},
		},
		{
			name: "Select1",
			twoArgsF: func(v, x, y *Element) *Element {
				return v.Select(x, y, 1)
			},
		},
	} {
		var err error
		switch {
		case tt.oneArgF != nil:

	testBlock(always, func() {
		ch := make(chan int)
		<-ch
	})

	// empty selects always block
	testBlock(always, func() {
		select {}
	})

	// selects with only nil channels always block
	testBlock(always, func() {
		select {
		case <-nilch:
			unreachable()
		}
	})
	testBlock(always, func() {
		select {
		case nilch <- 7:
			unreachable()
		}
	})
	testBlock(always, func() {

	c <- 1
	select {
	default:
	case <-c:
		if a("1")("2")("3"); log != "a(1)a(2)a(3)" {
			println("in select4, expecting a(1)a(2)a(3) , got ", log)
			err++
		}
		log = ""

		if t.a("1").a(t.b("2")); log != "a(1)b(2)a(2)" {
			println("in select4, expecting a(1)b(2)a(2), got ", log)
			err++
		}
		log = ""
		if a("3")(b("4"))(b("5")); log != "a(3)b(4)a(4)b(5)a(5)" {

// Test break statements in a select.
// Gccgo had a bug in handling this.
// Test 1,2,3-case selects, so it covers both the general
// code path and the specialized optimizations for one-
// and two-case selects.

package main

var ch = make(chan int)

func main() {
	go func() {
		for {
			ch <- 5
		}
	}()

	select {
	case <-ch:
		break
		panic("unreachable")
	}

// license that can be found in the LICENSE file.

// Test that selects do not consume undue memory.

package main

import "runtime"

func sender(c chan int, n int) {
	for i := 0; i < n; i++ {
		c <- 1
	}
}

func receiver(c, dummy chan int, n int) {
	for i := 0; i < n; i++ {
		select {
		case <-c:
			// nothing
		case <-dummy:
			panic("dummy")
		}
	}
}

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Test for select: Issue 2075
// A bug in select corrupts channel queues of failed cases
// if there are multiple waiters on those channels and the
// select is the last in the queue. If further waits are made
// on the channel without draining it first then those waiters

// license that can be found in the LICENSE file

// Test that a select statement proceeds when a value is ready.

package main

func f() *int {
	println("BUG: called f")
	return new(int)
}

func main() {
	var x struct {
		a int
	}
	c := make(chan int, 1)
	c1 := make(chan int)
	c <- 42
	select {
	case *f() = <-c1:
		// nothing
	case x.a = <-c:
		if x.a != 42 {