test/codegen: port stack-related tests to codegen

And delete them from asm_test.

Change-Id: Idfe1249052d82d15b9c30b292c78656a0bf7b48d
Reviewed-on: https://go-review.googlesource.com/103315
Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>

src/cmd/compile/internal/gc/asm_test.go

@@ -227,16 +227,6 @@ var allAsmTests = []*asmTests{
 		imports: []string{"runtime"},
 		tests:   linuxAMD64Tests,
 	},
-	{
-		arch:  "386",
-		os:    "linux",
-		tests: linux386Tests,
-	},
-	{
-		arch:  "s390x",
-		os:    "linux",
-		tests: linuxS390XTests,
-	},
 	{
 		arch:    "arm",
 		os:      "linux",
@@ -248,21 +238,11 @@ var allAsmTests = []*asmTests{
 		os:    "linux",
 		tests: linuxARM64Tests,
 	},
-	{
-		arch:  "mips",
-		os:    "linux",
-		tests: linuxMIPSTests,
-	},
 	{
 		arch:  "mips64",
 		os:    "linux",
 		tests: linuxMIPS64Tests,
 	},
-	{
-		arch:  "ppc64le",
-		os:    "linux",
-		tests: linuxPPC64LETests,
-	},
 	{
 		arch:  "amd64",
 		os:    "plan9",
@@ -345,42 +325,6 @@ var linuxAMD64Tests = []*asmTest{
 		`,
 		neg: []string{"MOVUPS"},
 	},
-	{
-		// check that stack store is optimized away
-		fn: `
-		func $() int {
-			var x int
-			return *(&x)
-		}
-		`,
-		pos: []string{"TEXT\t.*, [$]0-8"},
-	},
-}
-
-var linux386Tests = []*asmTest{
-	{
-		// check that stack store is optimized away
-		fn: `
-		func $() int {
-			var x int
-			return *(&x)
-		}
-		`,
-		pos: []string{"TEXT\t.*, [$]0-4"},
-	},
-}
-
-var linuxS390XTests = []*asmTest{
-	{
-		// check that stack store is optimized away
-		fn: `
-		func $() int {
-			var x int
-			return *(&x)
-		}
-		`,
-		pos: []string{"TEXT\t.*, [$]0-8"},
-	},
 }
 
 var linuxARMTests = []*asmTest{
@@ -394,16 +338,6 @@ var linuxARMTests = []*asmTest{
 		`,
 		pos: []string{"b\\+4\\(FP\\)"},
 	},
-	{
-		// check that stack store is optimized away
-		fn: `
-		func $() int {
-			var x int
-			return *(&x)
-		}
-		`,
-		pos: []string{"TEXT\t.*, [$]-4-4"},
-	},
 }
 
 var linuxARM64Tests = []*asmTest{
@@ -460,16 +394,6 @@ var linuxARM64Tests = []*asmTest{
 		`,
 		pos: []string{"\tMOVD\t\"\"\\.a\\+[0-9]+\\(FP\\), R[0-9]+", "\tMOVD\tR[0-9]+, \"\"\\.b\\+[0-9]+\\(FP\\)"},
 	},
-	{
-		// check that stack store is optimized away
-		fn: `
-		func $() int {
-			var x int
-			return *(&x)
-		}
-		`,
-		pos: []string{"TEXT\t.*, [$]-8-8"},
-	},
 	{
 		// check that we don't emit comparisons for constant shift
 		fn: `
@@ -750,19 +674,6 @@ var linuxARM64Tests = []*asmTest{
 	},
 }
 
-var linuxMIPSTests = []*asmTest{
-	{
-		// check that stack store is optimized away
-		fn: `
-		func $() int {
-			var x int
-			return *(&x)
-		}
-		`,
-		pos: []string{"TEXT\t.*, [$]-4-4"},
-	},
-}
-
 var linuxMIPS64Tests = []*asmTest{
 	{
 		// check that we don't emit comparisons for constant shift
@@ -776,19 +687,6 @@ var linuxMIPS64Tests = []*asmTest{
 	},
 }
 
-var linuxPPC64LETests = []*asmTest{
-	{
-		// check that stack store is optimized away
-		fn: `
-		func $() int {
-			var x int
-			return *(&x)
-		}
-		`,
-		pos: []string{"TEXT\t.*, [$]0-8"},
-	},
-}
-
 var plan9AMD64Tests = []*asmTest{
 	// We should make sure that the compiler doesn't generate floating point
 	// instructions for non-float operations on Plan 9, because floating point

test/codegen/stack.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 code generation tests related to the use of the
+// stack.
+
+// check that stack stores are optimized away
+
+// 386:"TEXT\t.*, [$]0-4"
+// amd64:"TEXT\t.*, [$]0-8"
+// arm:"TEXT\t.*, [$]-4-4"
+// arm64:"TEXT\t.*, [$]-8-8"
+// s390x:"TEXT\t.*, [$]0-8"
+// ppc64le:"TEXT\t.*, [$]0-8"
+// mips:"TEXT\t.*, [$]-4-4"
+func StackStore() int {
+	var x int
+	return *(&x)
+}