// has the pointer in arg[1] and the index in arg[2].
			ptrIndex := 0
			if opcodeTable[v.Op].resultInArg0 {
				ptrIndex = 1
			}
			p := v.Args[ptrIndex]
			c, ok := combine[[2]Op{v.Op, p.Op}]
			if !ok {
				continue
			}
			// See if we can combine the Aux/AuxInt values.
			switch [2]auxType{opcodeTable[v.Op].auxType, opcodeTable[p.Op].auxType} {
			case [2]auxType{auxSymOff, auxInt32}:
				// TODO: introduce auxSymOff32

	if *verbflag >= 3 {
		fmt.Printf("visit pk=%d fid=%d func %s\n", pkgIdx, fnIdx, fd.Funcname)
	}

	var counters []uint32
	key := pkfunc{pk: pkgIdx, fcn: fnIdx}
	v, haveCounters := mm.pod.pmm[key]
	if haveCounters {
		counters = v.Counters
	}

	if pcombine {
		// If the merge is running in "combine programs" mode, then hash

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

package ssa

import (
	"cmd/compile/internal/base"
	"cmd/compile/internal/types"
	"cmd/internal/src"
	"sort"
)

// memcombine combines smaller loads and stores into larger ones.
// We ensure this generates good code for encoding/binary operations.
// It may help other cases also.
func memcombine(f *Func) {

// to produce a properties dump, then returns the path of the newly
// created file. NB: we can't use "go tool compile" here, since
// some of the test cases import stdlib packages (such as "os").
// This means using "go build", which is problematic since the
// Go command can potentially cache the results of the compile step,
// causing the test to fail when being run interactively. E.g.
//
//	$ rm -f dump.txt

// 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 ssa

import (
	"cmd/compile/internal/reflectdata"
	"cmd/compile/internal/types"
	"cmd/internal/obj"
	"cmd/internal/objabi"
	"cmd/internal/src"
	"fmt"
	"internal/buildcfg"
)

// A ZeroRegion records parts of an object which are known to be zero.

(MOVBUreg x:(ANDI [c] y)) && c >= 0 && int64(uint8(c)) == c => x
(MOVHUreg x:(ANDI [c] y)) && c >= 0 && int64(uint16(c)) == c => x
(MOVWUreg x:(ANDI [c] y)) && c >= 0 && int64(uint32(c)) == c => x

// Combine masking and zero extension.
(MOVBUreg (ANDI [c] x)) && c < 0 => (ANDI [int64(uint8(c))] x)
(MOVHUreg (ANDI [c] x)) && c < 0 => (ANDI [int64(uint16(c))] x)
(MOVWUreg (ANDI [c] x)) && c < 0 => (AND (MOVDconst [int64(uint32(c))]) x)

package walk

import (
	"fmt"
	"go/constant"
	"go/token"
	"math/bits"
	"sort"

	"cmd/compile/internal/base"
	"cmd/compile/internal/ir"
	"cmd/compile/internal/objw"
	"cmd/compile/internal/reflectdata"
	"cmd/compile/internal/rttype"
	"cmd/compile/internal/ssagen"
	"cmd/compile/internal/typecheck"
	"cmd/compile/internal/types"
	"cmd/internal/obj"
	"cmd/internal/src"
)

// walkSwitch walks a switch statement.

		but for the linker.
	CXX
		The command to use to compile C++ code.
	FC
		The command to use to compile Fortran code.
	PKG_CONFIG
		Path to pkg-config tool.

Architecture-specific environment variables:

	GOARM
		For GOARCH=arm, the ARM architecture for which to compile.
		Valid values are 5, 6, 7.

	"sort"
	"strings"
	"time"
)

// Compile is the main entry point for this package.
// Compile modifies f so that on return:
//   - all Values in f map to 0 or 1 assembly instructions of the target architecture
//   - the order of f.Blocks is the order to emit the Blocks
//   - the order of b.Values is the order to emit the Values in each Block
//   - f has a non-nil regAlloc field
func Compile(f *Func) {

	p.print(close)
}

// combinesWithName reports whether a name followed by the expression x
// syntactically combines to another valid (value) expression. For instance
// using *T for x, "name *T" syntactically appears as the expression x*T.
// On the other hand, using  P|Q or *P|~Q for x, "name P|Q" or name *P|~Q"
// cannot be combined into a valid (value) expression.
func combinesWithName(x Expr) bool {
	switch x := x.(type) {
	case *Operation: