mirror of
https://github.com/golang/go
synced 2024-11-24 08:30:15 -07:00
284ba47b49
This CL makes the codegen testsuite automatically test all architecture variants for architecture specified in tests. For instance, if a test file specifies a "arm" test, it will be automatically run on all GOARM variants (5,6,7), to increase the coverage. The CL also introduces a syntax to specify only a specific variant (eg: "arm/7") in case the test makes sense only there. The same syntax also allows to specify the operating system in case it matters (eg: "plan9/386/sse2"). Fixes #24658 Change-Id: I2eba8b918f51bb6a77a8431a309f8b71af07ea22 Reviewed-on: https://go-review.googlesource.com/107315 Run-TryBot: Giovanni Bajo <rasky@develer.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
100 lines
2.1 KiB
Go
100 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/sse2:"ADDSD",-"MULSD"
|
|
// 386/387:"FADDDP",-"FMULDP"
|
|
// amd64:"ADDSD",-"MULSD"
|
|
// arm/7:"ADDD",-"MULD"
|
|
// arm64:"FADDD",-"FMULD"
|
|
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"
|
|
x := f1 / 16.0
|
|
|
|
// 386/sse2:"MULSD",-"DIVSD"
|
|
// 386/387:"FMULDP",-"FDIVDP"
|
|
// amd64:"MULSD",-"DIVSD"
|
|
// arm/7:"MULD",-"DIVD"
|
|
// arm64:"FMULD",-"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"
|
|
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
|
|
}
|