C_UBIT      = 1 << 7
	C_SCOND_XOR = 14
)

// CConv formats opcode suffix bits (Prog.Scond).
func CConv(s uint8) string {
	if s == 0 {
		return ""
	}
	for i := range opSuffixSpace {
		sset := &opSuffixSpace[i]
		if sset.arch == buildcfg.GOARCH {
			return sset.cconv(s)
		}
	}
	return fmt.Sprintf("SC???%d", s)
}

// CConvARM formats ARM opcode suffix bits (mostly condition codes).
func CConvARM(s uint8) string {

		args[i], args[j] = args[j], args[i]
	}

	if args != nil {
		op += " " + strings.Join(args, ", ")
	}

	return op
}

// No need add "W" to opcode suffix.
// Opcode must be inserted in ascending order.
var noSuffixOpSet = strings.Fields(`
AESD
AESE
AESIMC
AESMC
CRC32B
CRC32CB
CRC32CH
CRC32CW
CRC32CX
CRC32H
CRC32W
CRC32X
LDARB

	encDecimalFloat   = 0x0F
	// The following are new in DWARF 4.
	encUTF = 0x10
	// The following are new in DWARF 5.
	encUCS   = 0x11
	encASCII = 0x12
)

// Statement program standard opcode encodings.
const (
	lnsCopy           = 1
	lnsAdvancePC      = 2
	lnsAdvanceLine    = 3
	lnsSetFile        = 4
	lnsSetColumn      = 5
	lnsNegateStmt     = 6
	lnsSetBasicBlock  = 7

// Copyright 2015 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.

// The gen command generates Go code (in the parent directory) for all
// the architecture-specific opcodes, blocks, and rewrites.
package main

import (
	"bytes"
	"flag"
	"fmt"
	"go/format"
	"log"
	"math/bits"
	"os"
	"path"
	"regexp"
	"runtime"
	"runtime/pprof"

	// The type of this value. Normally this will be a Go type, but there
	// are a few other pseudo-types, see ../types/type.go.
	Type *types.Type

	// Auxiliary info for this value. The type of this information depends on the opcode and type.
	// AuxInt is used for integer values, Aux is used for other values.
	// Floats are stored in AuxInt using math.Float64bits(f).
	// Unused portions of AuxInt are filled by sign-extending the used portion,

	}

}

// opcodeMap returns a map from opcode to the number of times that opcode
// appears in the function.
func opcodeMap(f *Func) map[Op]int {
	m := map[Op]int{}
	for _, b := range f.Blocks {
		for _, v := range b.Values {
			m[v.Op]++
		}
	}
	return m
}

// opcodeCounts checks that the number of opcodes listed in m agree with the
// number of opcodes that appear in the function.

// The opBits describe bits that should be extracted from x and added to the opcode.
// For example opBits = 0x1234 means that the value
//
//	(2 bits at offset 1) followed by (4 bits at offset 3)
//
// should be added to op.
// Finally the args describe how to decode the instruction arguments.
// args is stored as a fixed-size array; if there are fewer than len(args) arguments,

			dst = dst[:0]
			for {
				hdr, err := wsReader.NextFrame()
				if err != nil {
					return nil, err
				}
				if hdr.OpCode.IsControl() {
					if err := controlHandler(hdr, &wsReader); err != nil {
						return nil, err
					}
					continue
				}
				if hdr.OpCode&want == 0 {
					if err := wsReader.Discard(); err != nil {

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

package s390x

import (
	"cmd/internal/obj"
)

// This file contains utility functions for use when
// assembling vector instructions.

// vop returns the opcode, element size and condition
// setting for the given (possibly extended) mnemonic.
func vop(as obj.As) (opcode, es, cs uint32) {
	switch as {

	auxS390XCCMask       // aux is a s390x 4-bit condition code mask
	auxS390XCCMaskInt8   // aux is a s390x 4-bit condition code mask, auxInt is an int8 immediate
	auxS390XCCMaskUint8  // aux is a s390x 4-bit condition code mask, auxInt is a uint8 immediate
)

// A SymEffect describes the effect that an SSA Value has on the variable