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test/codegen: port 2^n muls tests to codegen harness 

And delete them from the asm_test.go file.

Change-Id: I124c8c352299646ec7db0968cdb0fe59a3b5d83d
Reviewed-on: https://go-review.googlesource.com/99475
Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Giovanni Bajo <rasky@develer.com>
This commit is contained in:
Alberto Donizetti 2018-03-08 10:57:10 +01:00
parent 0585d41c87
commit 3772b2e1d5
2 changed files with 26 additions and 80 deletions
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80
src/cmd/compile/internal/gc/asm_test.go
View File

@ -272,26 +272,6 @@ var allAsmTests = []*asmTests{
} }
var linuxAMD64Tests = []*asmTest{ var linuxAMD64Tests = []*asmTest{
// multiplication by powers of two
{
fn: `
func $(n int) int {
return n * 64
}
`,
pos: []string{"\tSHLQ\t\\$6,"},
neg: []string{"IMULQ"},
},
{
fn: `
func $(n int) int {
return -128*n
}
`,
pos: []string{"SHLQ"},
neg: []string{"IMULQ"},
},
{ {
fn: ` fn: `
func $(x int) int { func $(x int) int {
@ -927,26 +907,6 @@ var linuxAMD64Tests = []*asmTest{
} }
var linux386Tests = []*asmTest{ var linux386Tests = []*asmTest{
// multiplication by powers of two
{
fn: `
func $(n int) int {
return 32*n
}
`,
pos: []string{"SHLL"},
neg: []string{"IMULL"},
},
{
fn: `
func $(n int) int {
return -64*n
}
`,
pos: []string{"SHLL"},
neg: []string{"IMULL"},
},
// multiplication merging tests // multiplication merging tests
{ {
fn: ` fn: `
@ -1155,26 +1115,6 @@ var linuxS390XTests = []*asmTest{
} }
var linuxARMTests = []*asmTest{ var linuxARMTests = []*asmTest{
// multiplication by powers of two
{
fn: `
func $(n int) int {
return 16*n
}
`,
pos: []string{"\tSLL\t[$]4"},
neg: []string{"\tMUL\t"},
},
{
fn: `
func $(n int) int {
return -32*n
}
`,
pos: []string{"\tSLL\t[$]5"},
neg: []string{"\tMUL\t"},
},
{ {
fn: ` fn: `
func f0(x uint32) uint32 { func f0(x uint32) uint32 {
@ -1222,26 +1162,6 @@ var linuxARMTests = []*asmTest{
} }
var linuxARM64Tests = []*asmTest{ var linuxARM64Tests = []*asmTest{
// multiplication by powers of two
{
fn: `
func $(n int) int {
return 64*n
}
`,
pos: []string{"\tLSL\t[$]6"},
neg: []string{"\tMUL\t"},
},
{
fn: `
func $(n int) int {
return -128*n
}
`,
pos: []string{"\tLSL\t[$]7"},
neg: []string{"\tMUL\t"},
},
{ {
fn: ` fn: `
func f0(x uint64) uint64 { func f0(x uint64) uint64 {

26
test/codegen/arithmetic.go Normal file
View File

@ -0,0 +1,26 @@
// 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/optimizations.
func Pow2Muls(n1, n2 int) (int, int) {
// amd64:"SHLQ\t[$]5",-"IMULQ"
// 386:"SHLL\t[$]5",-"IMULL"
// arm:"SLL\t[$]5",-"MUL"
// arm64:"LSL\t[$]5",-"MUL"
a := n1 * 32
// amd64:"SHLQ\t[$]6",-"IMULQ"
// 386:"SHLL\t[$]6",-"IMULL"
// arm:"SLL\t[$]6",-"MUL"
// arm64:"LSL\t[$]6",-"MUL"
b := -64 * n2
return a, b
}