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74 lines
1.5 KiB
Go
74 lines
1.5 KiB
Go
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// asmcheck
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// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package codegen
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// This file contains codegen tests related to arithmetic
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// simplifications and optimizations on float types.
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// For codegen tests on integer types, see arithmetic.go.
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// --------------------- //
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// Strength-reduce //
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// --------------------- //
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func Mul2(f float64) float64 {
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// 386:"ADDSD",-"MULSD"
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// amd64:"ADDSD",-"MULSD"
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// arm:"ADDD",-"MULD"
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// arm64:"FADDD",-"FMULD"
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return f * 2.0
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}
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func DivPow2(f1, f2, f3 float64) (float64, float64, float64) {
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// 386:"MULSD",-"DIVSD"
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// amd64:"MULSD",-"DIVSD"
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// arm:"MULD",-"DIVD"
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// arm64:"FMULD",-"FDIVD"
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x := f1 / 16.0
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// 386:"MULSD",-"DIVSD"
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// amd64:"MULSD",-"DIVSD"
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// arm:"MULD",-"DIVD"
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// arm64:"FMULD",-"FDIVD"
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y := f2 / 0.125
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// 386:"ADDSD",-"DIVSD",-"MULSD"
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// amd64:"ADDSD",-"DIVSD",-"MULSD"
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// arm:"ADDD",-"MULD",-"DIVD"
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// arm64:"FADDD",-"FMULD",-"FDIVD"
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z := f3 / 0.5
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return x, y, z
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}
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// ----------- //
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// Fused //
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// ----------- //
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func FusedAdd32(x, y, z float32) float32 {
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// s390x:"FMADDS\t"
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// ppc64le:"FMADDS\t"
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return x*y + z
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}
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func FusedSub32(x, y, z float32) float32 {
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// s390x:"FMSUBS\t"
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// ppc64le:"FMSUBS\t"
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return x*y - z
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}
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func FusedAdd64(x, y, z float64) float64 {
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// s390x:"FMADD\t"
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// ppc64le:"FMADD\t"
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return x*y + z
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}
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func FusedSub64(x, y, z float64) float64 {
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// s390x:"FMSUB\t"
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// ppc64le:"FMSUB\t"
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return x*y - z
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}
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