Gecko [ 167.86.127.34 ]

Name	Size	Permission
README	5.15 KB	-rw-r--r--
alloc.go	902 B	-rw-r--r--
arithmetic.go	10.67 KB	-rw-r--r--
bitfield.go	5.54 KB	-rw-r--r--
bits.go	5.18 KB	-rw-r--r--
compare_and_branch.go	2.81 KB	-rw-r--r--
comparisons.go	5.04 KB	-rw-r--r--
condmove.go	3.14 KB	-rw-r--r--
copy.go	1.72 KB	-rw-r--r--
floats.go	3.06 KB	-rw-r--r--
issue22703.go	5.43 KB	-rw-r--r--
issue25378.go	433 B	-rw-r--r--
issue31618.go	504 B	-rw-r--r--
issue33580.go	459 B	-rw-r--r--
mapaccess.go	9.21 KB	-rw-r--r--
maps.go	2.77 KB	-rw-r--r--
math.go	4.54 KB	-rw-r--r--
mathbits.go	12.75 KB	-rw-r--r--
memcombine.go	22.58 KB	-rw-r--r--
memops.go	1.43 KB	-rw-r--r--
noextend.go	5.57 KB	-rw-r--r--
race.go	581 B	-rw-r--r--
rotate.go	2.51 KB	-rw-r--r--
shift.go	2.62 KB	-rw-r--r--
slices.go	3.36 KB	-rw-r--r--
stack.go	2.96 KB	-rw-r--r--
strings.go	2.03 KB	-rw-r--r--
structs.go	905 B	-rw-r--r--
switch.go	409 B	-rw-r--r--
zerosize.go	537 B	-rw-r--r--

Code Editor : floats.go

// asmcheck

// Copyright 2018 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 codegen

import "math"

// This file contains codegen tests related to arithmetic
// simplifications and optimizations on float types.
// For codegen tests on integer types, see arithmetic.go.

// --------------------- //
//    Strength-reduce    //
// --------------------- //

func Mul2(f float64) float64 {
	// 386/sse2:"ADDSD",-"MULSD"
	// 386/387:"FADDDP",-"FMULDP"
	// amd64:"ADDSD",-"MULSD"
	// arm/7:"ADDD",-"MULD"
	// arm64:"FADDD",-"FMULD"
	// ppc64:"FADD",-"FMUL"
	// ppc64le:"FADD",-"FMUL"
	return f * 2.0
}

func DivPow2(f1, f2, f3 float64) (float64, float64, float64) {
	// 386/sse2:"MULSD",-"DIVSD"
	// 386/387:"FMULDP",-"FDIVDP"
	// amd64:"MULSD",-"DIVSD"
	// arm/7:"MULD",-"DIVD"
	// arm64:"FMULD",-"FDIVD"
	// ppc64:"FMUL",-"FDIV"
	// ppc64le:"FMUL",-"FDIV"
	x := f1 / 16.0

// 386/sse2:"MULSD",-"DIVSD"
	// 386/387:"FMULDP",-"FDIVDP"
	// amd64:"MULSD",-"DIVSD"
	// arm/7:"MULD",-"DIVD"
	// arm64:"FMULD",-"FDIVD"
	// ppc64:"FMUL",-"FDIVD"
	// ppc64le:"FMUL",-"FDIVD"
	y := f2 / 0.125

// 386/sse2:"ADDSD",-"DIVSD",-"MULSD"
	// 386/387:"FADDDP",-"FDIVDP",-"FMULDP"
	// amd64:"ADDSD",-"DIVSD",-"MULSD"
	// arm/7:"ADDD",-"MULD",-"DIVD"
	// arm64:"FADDD",-"FMULD",-"FDIVD"
	// ppc64:"FADD",-"FMUL",-"FDIV"
	// ppc64le:"FADD",-"FMUL",-"FDIV"
	z := f3 / 0.5

return x, y, z
}

func getPi() float64 {
	// 386/387:"FLDPI"
	return math.Pi
}

func indexLoad(b0 []float32, b1 float32, idx int) float32 {
	// arm64:`FMOVS\s\(R[0-9]+\)\(R[0-9]+\),\sF[0-9]+`
	return b0[idx] * b1
}

func indexStore(b0 []float64, b1 float64, idx int) {
	// arm64:`FMOVD\sF[0-9]+,\s\(R[0-9]+\)\(R[0-9]+\)`
	b0[idx] = b1
}

// ----------- //
//    Fused    //
// ----------- //

func FusedAdd32(x, y, z float32) float32 {
	// s390x:"FMADDS\t"
	// ppc64:"FMADDS\t"
	// ppc64le:"FMADDS\t"
	// arm64:"FMADDS"
	return x*y + z
}

func FusedSub32_a(x, y, z float32) float32 {
	// s390x:"FMSUBS\t"
	// ppc64:"FMSUBS\t"
	// ppc64le:"FMSUBS\t"
	return x*y - z
}

func FusedSub32_b(x, y, z float32) float32 {
	// arm64:"FMSUBS"
	return z - x*y
}

func FusedAdd64(x, y, z float64) float64 {
	// s390x:"FMADD\t"
	// ppc64:"FMADD\t"
	// ppc64le:"FMADD\t"
	// arm64:"FMADDD"
	return x*y + z
}

func FusedSub64_a(x, y, z float64) float64 {
	// s390x:"FMSUB\t"
	// ppc64:"FMSUB\t"
	// ppc64le:"FMSUB\t"
	return x*y - z
}

func FusedSub64_b(x, y, z float64) float64 {
	// arm64:"FMSUBD"
	return z - x*y
}

func Cmp(f float64) bool {
	// arm64:"FCMPD","BLE",-"CSET\tGT",-"CBZ"
	return f > 4 || f < -4
}

// ---------------- //
//    Non-floats    //
// ---------------- //

// We should make sure that the compiler doesn't generate floating point
// instructions for non-float operations on Plan 9, because floating point
// operations are not allowed in the note handler.

func ArrayZero() [16]byte {
	// amd64:"MOVUPS"
	// plan9/amd64/:-"MOVUPS"
	var a [16]byte
	return a
}

func ArrayCopy(a [16]byte) (b [16]byte) {
	// amd64:"MOVUPS"
	// plan9/amd64/:-"MOVUPS"
	b = a
	return
}

${this.title}

Code Editor : floats.go