mirror of
https://github.com/golang/go
synced 2024-09-30 15:28:33 -06:00
01aa1d7dbe
And remove it from asmtest. Next CL will remove the whole asmtest infrastructure. Change-Id: I5851bf7c617456d62a3c6cffacf70252df7b056b Reviewed-on: https://go-review.googlesource.com/107335 Run-TryBot: Giovanni Bajo <rasky@develer.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
96 lines
2.1 KiB
Go
96 lines
2.1 KiB
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
|
|
|
|
// 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:"ADDSD|FADDDP",-"MULSD",-"FMULDP"
|
|
// amd64:"ADDSD",-"MULSD"
|
|
// arm:"ADDD",-"MULD"
|
|
// arm64:"FADDD",-"FMULD"
|
|
return f * 2.0
|
|
}
|
|
|
|
func DivPow2(f1, f2, f3 float64) (float64, float64, float64) {
|
|
// 386:"MULSD|FMULDP",-"DIVSD",-"FDIVDP"
|
|
// amd64:"MULSD",-"DIVSD"
|
|
// arm:"MULD",-"DIVD"
|
|
// arm64:"FMULD",-"FDIVD"
|
|
x := f1 / 16.0
|
|
|
|
// 386:"MULSD|FMULDP",-"DIVSD",-"FDIVDP"
|
|
// amd64:"MULSD",-"DIVSD"
|
|
// arm:"MULD",-"DIVD"
|
|
// arm64:"FMULD",-"FDIVD"
|
|
y := f2 / 0.125
|
|
|
|
// 386:"ADDSD|FADDDP",-"DIVSD",-"MULSD",-"FDIVDP",-"FMULDP"
|
|
// amd64:"ADDSD",-"DIVSD",-"MULSD"
|
|
// arm:"ADDD",-"MULD",-"DIVD"
|
|
// arm64:"FADDD",-"FMULD",-"FDIVD"
|
|
z := f3 / 0.5
|
|
|
|
return x, y, z
|
|
}
|
|
|
|
// ----------- //
|
|
// Fused //
|
|
// ----------- //
|
|
|
|
func FusedAdd32(x, y, z float32) float32 {
|
|
// s390x:"FMADDS\t"
|
|
// ppc64le:"FMADDS\t"
|
|
return x*y + z
|
|
}
|
|
|
|
func FusedSub32(x, y, z float32) float32 {
|
|
// s390x:"FMSUBS\t"
|
|
// ppc64le:"FMSUBS\t"
|
|
return x*y - z
|
|
}
|
|
|
|
func FusedAdd64(x, y, z float64) float64 {
|
|
// s390x:"FMADD\t"
|
|
// ppc64le:"FMADD\t"
|
|
return x*y + z
|
|
}
|
|
|
|
func FusedSub64(x, y, z float64) float64 {
|
|
// s390x:"FMSUB\t"
|
|
// ppc64le:"FMSUB\t"
|
|
return x*y - z
|
|
}
|
|
|
|
// ---------------- //
|
|
// 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
|
|
}
|