runtime,internal: move runtime/internal/sys to internal/runtime/sys

Cleanup and friction reduction

For #65355.

Change-Id: Ia14c9dc584a529a35b97801dd3e95b9acc99a511
Reviewed-on: https://go-review.googlesource.com/c/go/+/600436
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@golang.org>

Author: dr2chase

.gitignore

@@ -37,7 +37,7 @@ _testmain.go
 /src/go/build/zcgo.go
 /src/go/doc/headscan
 /src/internal/buildcfg/zbootstrap.go
-/src/runtime/internal/sys/zversion.go
+/src/internal/runtime/sys/zversion.go
 /src/unicode/maketables
 /src/time/tzdata/zzipdata.go
 /test.out

src/cmd/compile/internal/noder/helpers.go

@@ -114,11 +114,11 @@ func isTypeParam(t types2.Type) bool {
 }
 
 // isNotInHeap reports whether typ is or contains an element of type
-// runtime/internal/sys.NotInHeap.
+// internal/runtime/sys.NotInHeap.
 func isNotInHeap(typ types2.Type) bool {
 	typ = types2.Unalias(typ)
 	if named, ok := typ.(*types2.Named); ok {
-		if obj := named.Obj(); obj.Name() == "nih" && obj.Pkg().Path() == "runtime/internal/sys" {
+		if obj := named.Obj(); obj.Name() == "nih" && obj.Pkg().Path() == "internal/runtime/sys" {
 			return true
 		}
 		typ = named.Underlying()

src/cmd/compile/internal/ssagen/ssa.go

@@ -4287,13 +4287,13 @@ func InitTables() {
 		// make it worthwhile as an intrinsic
 		brev_arch = append(brev_arch, sys.PPC64)
 	}
-	/******** runtime/internal/sys ********/
-	addF("runtime/internal/sys", "Bswap32",
+	/******** internal/runtime/sys ********/
+	addF("internal/runtime/sys", "Bswap32",
 		func(s *state, n *ir.CallExpr, args []*ssa.Value) *ssa.Value {
 			return s.newValue1(ssa.OpBswap32, types.Types[types.TUINT32], args[0])
 		},
 		brev_arch...)
-	addF("runtime/internal/sys", "Bswap64",
+	addF("internal/runtime/sys", "Bswap64",
 		func(s *state, n *ir.CallExpr, args []*ssa.Value) *ssa.Value {
 			return s.newValue1(ssa.OpBswap64, types.Types[types.TUINT64], args[0])
 		},
@@ -4309,9 +4309,9 @@ func InitTables() {
 
 	// Make Prefetch intrinsics for supported platforms
 	// On the unsupported platforms stub function will be eliminated
-	addF("runtime/internal/sys", "Prefetch", makePrefetchFunc(ssa.OpPrefetchCache),
+	addF("internal/runtime/sys", "Prefetch", makePrefetchFunc(ssa.OpPrefetchCache),
 		sys.AMD64, sys.ARM64, sys.PPC64)
-	addF("runtime/internal/sys", "PrefetchStreamed", makePrefetchFunc(ssa.OpPrefetchCacheStreamed),
+	addF("internal/runtime/sys", "PrefetchStreamed", makePrefetchFunc(ssa.OpPrefetchCacheStreamed),
 		sys.AMD64, sys.ARM64, sys.PPC64)
 
 	/******** internal/runtime/atomic ********/
@@ -4837,8 +4837,8 @@ func InitTables() {
 			return s.newValue1(ssa.OpCtz64, types.Types[types.TINT], y)
 		},
 		sys.S390X)
-	alias("math/bits", "ReverseBytes64", "runtime/internal/sys", "Bswap64", all...)
-	alias("math/bits", "ReverseBytes32", "runtime/internal/sys", "Bswap32", all...)
+	alias("math/bits", "ReverseBytes64", "internal/runtime/sys", "Bswap64", all...)
+	alias("math/bits", "ReverseBytes32", "internal/runtime/sys", "Bswap32", all...)
 	// ReverseBytes inlines correctly, no need to intrinsify it.
 	// Nothing special is needed for targets where ReverseBytes16 lowers to a rotate
 	// On Power10, 16-bit rotate is not available so use BRH instruction
@@ -5051,12 +5051,12 @@ func InitTables() {
 		sys.AMD64)
 	alias("math/bits", "Div", "math/bits", "Div64", sys.ArchAMD64)
 
-	alias("runtime/internal/sys", "TrailingZeros8", "math/bits", "TrailingZeros8", all...)
-	alias("runtime/internal/sys", "TrailingZeros32", "math/bits", "TrailingZeros32", all...)
-	alias("runtime/internal/sys", "TrailingZeros64", "math/bits", "TrailingZeros64", all...)
-	alias("runtime/internal/sys", "Len8", "math/bits", "Len8", all...)
-	alias("runtime/internal/sys", "Len64", "math/bits", "Len64", all...)
-	alias("runtime/internal/sys", "OnesCount64", "math/bits", "OnesCount64", all...)
+	alias("internal/runtime/sys", "TrailingZeros8", "math/bits", "TrailingZeros8", all...)
+	alias("internal/runtime/sys", "TrailingZeros32", "math/bits", "TrailingZeros32", all...)
+	alias("internal/runtime/sys", "TrailingZeros64", "math/bits", "TrailingZeros64", all...)
+	alias("internal/runtime/sys", "Len8", "math/bits", "Len8", all...)
+	alias("internal/runtime/sys", "Len64", "math/bits", "Len64", all...)
+	alias("internal/runtime/sys", "OnesCount64", "math/bits", "OnesCount64", all...)
 
 	/******** sync/atomic ********/
 

src/cmd/compile/internal/test/inl_test.go

@@ -97,7 +97,7 @@ func TestIntendedInlining(t *testing.T) {
 			"traceLocker.ok",
 			"traceEnabled",
 		},
-		"runtime/internal/sys": {},
+		"internal/runtime/sys": {},
 		"internal/runtime/math": {
 			"MulUintptr",
 		},
@@ -246,9 +246,9 @@ func TestIntendedInlining(t *testing.T) {
 	if runtime.GOARCH != "386" {
 		// As explained above, TrailingZeros64 and TrailingZeros32 are not Go code on 386.
 		// The same applies to Bswap32.
-		want["runtime/internal/sys"] = append(want["runtime/internal/sys"], "TrailingZeros64")
-		want["runtime/internal/sys"] = append(want["runtime/internal/sys"], "TrailingZeros32")
-		want["runtime/internal/sys"] = append(want["runtime/internal/sys"], "Bswap32")
+		want["internal/runtime/sys"] = append(want["internal/runtime/sys"], "TrailingZeros64")
+		want["internal/runtime/sys"] = append(want["internal/runtime/sys"], "TrailingZeros32")
+		want["internal/runtime/sys"] = append(want["internal/runtime/sys"], "Bswap32")
 	}
 	if runtime.GOARCH == "amd64" || runtime.GOARCH == "arm64" || runtime.GOARCH == "loong64" || runtime.GOARCH == "mips" || runtime.GOARCH == "mips64" || runtime.GOARCH == "ppc64" || runtime.GOARCH == "riscv64" || runtime.GOARCH == "s390x" {
 		// internal/runtime/atomic.Loaduintptr is only intrinsified on these platforms.

src/cmd/compile/internal/types/pkg.go

@@ -16,7 +16,7 @@ import (
 var pkgMap = make(map[string]*Pkg)
 
 type Pkg struct {
-	Path    string // string literal used in import statement, e.g. "runtime/internal/sys"
+	Path    string // string literal used in import statement, e.g. "internal/runtime/sys"
 	Name    string // package name, e.g. "sys"
 	Prefix  string // escaped path for use in symbol table
 	Syms    map[string]*Sym

src/cmd/compile/internal/types/type.go

@@ -1650,7 +1650,7 @@ func NewNamed(obj Object) *Type {
 		t.SetIsShape(true)
 		t.SetHasShape(true)
 	}
-	if sym.Pkg.Path == "runtime/internal/sys" && sym.Name == "nih" {
+	if sym.Pkg.Path == "internal/runtime/sys" && sym.Name == "nih" {
 		// Recognize the special not-in-heap type. Any type including
 		// this type will also be not-in-heap.
 		// This logic is duplicated in go/types and

src/cmd/dist/build.go

@@ -639,7 +639,7 @@ var gentab = []struct {
 }{
 	{"go/build", "zcgo.go", mkzcgo},
 	{"cmd/go/internal/cfg", "zdefaultcc.go", mkzdefaultcc},
-	{"runtime/internal/sys", "zversion.go", mkzversion},
+	{"internal/runtime/sys", "zversion.go", mkzversion},
 	{"time/tzdata", "zzipdata.go", mktzdata},
 }
 
@@ -1707,7 +1707,7 @@ func checkNotStale(env []string, goBinary string, targets ...string) {
 	out := runEnv(workdir, CheckExit, env, append(goCmd, targets...)...)
 	if strings.Contains(out, "\tSTALE ") {
 		os.Setenv("GODEBUG", "gocachehash=1")
-		for _, target := range []string{"runtime/internal/sys", "cmd/dist", "cmd/link"} {
+		for _, target := range []string{"internal/runtime/sys", "cmd/dist", "cmd/link"} {
 			if strings.Contains(out, "STALE "+target) {
 				run(workdir, ShowOutput|CheckExit, goBinary, "list", "-f={{.ImportPath}} {{.Stale}}", target)
 				break

src/cmd/distpack/pack.go

@@ -132,7 +132,7 @@ func main() {
 		// Generated during cmd/dist. See ../dist/build.go:/gentab.
 		"src/cmd/go/internal/cfg/zdefaultcc.go",
 		"src/go/build/zcgo.go",
-		"src/runtime/internal/sys/zversion.go",
+		"src/internal/runtime/sys/zversion.go",
 		"src/time/tzdata/zzipdata.go",
 
 		// Generated during cmd/dist by bootstrapBuildTools.

src/cmd/distpack/test.go

@@ -35,7 +35,7 @@ var srcRules = []testRule{
 	{name: "go/pkg/**", exclude: true},
 	{name: "go/src/cmd/dist/dist", exclude: true},
 	{name: "go/src/cmd/dist/dist.exe", exclude: true},
-	{name: "go/src/runtime/internal/sys/zversion.go", exclude: true},
+	{name: "go/src/internal/runtime/sys/zversion.go", exclude: true},
 	{name: "go/src/time/tzdata/zzipdata.go", exclude: true},
 }
 

src/cmd/go/go_test.go

@@ -943,14 +943,14 @@ func TestNewReleaseRebuildsStalePackagesInGOPATH(t *testing.T) {
 	tg.run("install", "p1")
 	tg.wantNotStale("p1", "", "./testgo list claims p1 is stale, incorrectly, before any changes")
 
-	// Changing mtime of runtime/internal/sys/sys.go
+	// Changing mtime of internal/runtime/sys/sys.go
 	// should have no effect: only the content matters.
 	// In fact this should be true even outside a release branch.
-	sys := tg.path("goroot/src/runtime/internal/sys/sys.go")
+	sys := tg.path("goroot/src/internal/runtime/sys/sys.go")
 	tg.sleep()
 	restore := addVar(sys, 0)
 	restore()
-	tg.wantNotStale("p1", "", "./testgo list claims p1 is stale, incorrectly, after updating mtime of runtime/internal/sys/sys.go")
+	tg.wantNotStale("p1", "", "./testgo list claims p1 is stale, incorrectly, after updating mtime of internal/runtime/sys/sys.go")
 
 	// But changing content of any file should have an effect.
 	// Previously zversion.go was the only one that mattered;