pcount := fm.p.unitTable[ukey]
	var result uint32
	if fm.cm == coverage.CtrModeSet {
		if count != 0 || pcount != 0 {
			result = 1
		}
	} else {
		// Use saturating arithmetic.
		result, _ = cmerge.SaturatingAdd(pcount, count)
	}
	fm.p.unitTable[ukey] = result
}

// sortUnits sorts a slice of extcu objects in a package according to

		for _, v := range b.Values {
			// a value resulting from taking the address of a
			// value, or a value constructed from an offset of a
			// non-nil ptr (OpAddPtr) implies it is non-nil
			// We also assume unsafe pointer arithmetic generates non-nil pointers. See #27180.
			// We assume that SlicePtr is non-nil because we do a bounds check
			// before the slice access (and all cap>0 slices have a non-nil ptr). See #30366.

	C_GOTADDR  // GOT slot for a symbol in -dynlink mode
	C_TEXTSIZE // text size
	C_ANY
	C_NCLASS // must be the last
)

const (
	// integer arithmetic
	AADD = obj.ABaseS390X + obj.A_ARCHSPECIFIC + iota
	AADDC
	AADDE
	AADDW
	ADIVW
	ADIVWU
	ADIVD
	ADIVDU
	AMODW
	AMODWU
	AMODD
	AMODDU
	AMULLW
	AMULLD
	AMULHD

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

// This file provides Go implementations of elementary multi-precision
// arithmetic operations on word vectors. These have the suffix _g.
// These are needed for platforms without assembly implementations of these routines.
// This file also contains elementary operations that can be implemented

	HasTHUMB    bool // ARM Thumb instruction set
	Has26BIT    bool // Address space limited to 26-bits
	HasFASTMUL  bool // 32-bit operand, 64-bit result multiplication support
	HasFPA      bool // Floating point arithmetic support
	HasVFP      bool // Vector floating point support
	HasEDSP     bool // DSP Extensions support
	HasJAVA     bool // Java instruction set
	HasIWMMXT   bool // Intel Wireless MMX technology support

	t = l.Type()
	if (l.Type() == types.UntypedFloat || l.Type() == types.UntypedComplex) && r.Op() == ir.OLITERAL {
		t = types.UntypedInt
	}
	return l, r, t
}

// tcArith typechecks operands of a binary arithmetic expression.
// The result of tcArith MUST be assigned back to original operands,
// t is the type of the expression, and should be set by the caller. e.g:
//
//	n.X, n.Y, t = tcArith(n, op, n.X, n.Y)
//	n.SetType(t)

	_ = 1.1 /* ERROR "int" */ <<s + x == 1.1

	_ = 1<<s == x<<s
	_ = 1.<<s == x<<s
	_ = 1.1  /* ERROR "int" */ <<s == x<<s
}

func shifts6() {
	// shifts as operands in non-arithmetic operations and as arguments
	var a [10]int
	var s uint

	_ = a[1<<s]
	_ = a[1.0]
	_ = a[1.0<<s]

	_ = make([]int, 1.0)
	_ = make([]int, 1.0<<s)

// 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.

// Lowering arithmetic
(Add(Ptr|64|32|16|8) ...) => (ADD ...)
(Add(64|32)F ...) => (FADD(D|S) ...)

(Sub(Ptr|64|32|16|8) ...) => (SUB ...)
(Sub(64|32)F ...) => (FSUB(D|S) ...)

(Mul64 ...) => (MUL  ...)
(Mul64uhilo ...) => (LoweredMuluhilo ...)
(Mul64uover ...) => (LoweredMuluover ...)

		OpDiv32F, OpDiv64F,
		OpMod8, OpMod8u, OpMod16, OpMod16u,
		OpMod32, OpMod32u, OpMod64, OpMod64u:
		return true
	default:
		return false
	}
}

func isPtrArithmetic(op Op) bool {
	// Pointer arithmetic can't be speculatively executed because the result
	// may be an invalid pointer (if, for example, the condition is that the
	// base pointer is not nil). See issue 56990.
	switch op {
	case OpOffPtr, OpAddPtr, OpSubPtr:

// Copyright (c) 2017 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 field implements fast arithmetic modulo 2^255-19.
package field

import (
	"crypto/subtle"
	"errors"
	"internal/byteorder"
	"math/bits"
)

// Element represents an element of the field GF(2^255-19). Note that this