}
	return "interface conversion: " + cs + " is not " + as +
		": missing method " + e.missingMethod
}

// itoa converts val to a decimal representation. The result is
// written somewhere within buf and the location of the result is returned.
// buf must be at least 20 bytes.
//
//go:nosplit
func itoa(buf []byte, val uint64) []byte {
	i := len(buf) - 1
	for val >= 10 {
		buf[i] = byte(val%10 + '0')
		i--
		val /= 10

//
// Note that traceBlockReasons should not be compared, since reasons that are
// distinct by name may *not* be distinct by value.
type traceBlockReason uint8

const (
	traceBlockGeneric traceBlockReason = iota
	traceBlockForever
	traceBlockNet
	traceBlockSelect
	traceBlockCondWait
	traceBlockSync
	traceBlockChanSend
	traceBlockChanRecv
	traceBlockGCMarkAssist
	traceBlockGCSweep
	traceBlockSystemGoroutine

	}
	if mapfast(t) == mapslow {
		return typecheck.LookupRuntime(name, t.Key(), t.Elem(), t.Key())
	}
	return typecheck.LookupRuntime(name, t.Key(), t.Elem())
}

const (
	mapslow = iota
	mapfast32
	mapfast32ptr
	mapfast64
	mapfast64ptr
	mapfaststr
	nmapfast
)

type mapnames [nmapfast]string

func mkmapnames(base string, ptr string) mapnames {

// It is used to identify whether a flag appears;
// the standard boolean flag cannot
// distinguish missing from unset.
// It also satisfies flag.Value.
type triState int

const (
	unset triState = iota
	setTrue
	setFalse
)

func triStateFlag(name string, value triState, usage string) *triState {
	flag.Var(&value, name, usage)
	return &value
}

package ssa

import (
	"cmd/compile/internal/base"
	"cmd/compile/internal/types"
	"fmt"
)

type indVarFlags uint8

const (
	indVarMinExc    indVarFlags = 1 << iota // minimum value is exclusive (default: inclusive)
	indVarMaxInc                            // maximum value is inclusive (default: exclusive)

	n := data.Len()
	if n <= 1 {
		return
	}
	limit := bits.Len(uint(n))
	pdqsort(data, 0, n, limit)
}

type sortedHint int // hint for pdqsort when choosing the pivot

const (
	unknownHint sortedHint = iota
	increasingHint
	decreasingHint
)

// xorshift paper: https://www.jstatsoft.org/article/view/v008i14/xorshift.pdf
type xorshift uint64

func (r *xorshift) Next() uint64 {
	*r ^= *r << 13
	*r ^= *r >> 17

	formfeed = whiteSpace('\f')
	indent   = whiteSpace('>')
	unindent = whiteSpace('<')
)

// A pmode value represents the current printer mode.
type pmode int

const (
	noExtraBlank     pmode = 1 << iota // disables extra blank after /*-style comment
	noExtraLinebreak                   // disables extra line break after /*-style comment
)

type commentInfo struct {
	cindex         int               // current comment index

	scope         *Scope                 // top-most scope for lookups
	pos           token.Pos              // if valid, identifiers are looked up as if at position pos (used by Eval)
	iota          constant.Value         // value of iota in a constant declaration; nil otherwise
	errpos        positioner             // if set, identifier position of a constant with inherited initializer

// It is okay to ignore the return value of any particular
// call to scanner.state: if one call returns scanError,
// every subsequent call will return scanError too.
const (
	// Continue.
	scanContinue     = iota // uninteresting byte
	scanBeginLiteral        // end implied by next result != scanContinue
	scanBeginObject         // begin object
	scanObjectKey           // just finished object key (string)

//   - bool, for JSON booleans
//   - float64, for JSON numbers
//   - [Number], for JSON numbers
//   - string, for JSON string literals
//   - nil, for JSON null
type Token any

const (
	tokenTopValue = iota
	tokenArrayStart
	tokenArrayValue
	tokenArrayComma
	tokenObjectStart
	tokenObjectKey
	tokenObjectColon
	tokenObjectValue
	tokenObjectComma
)