cmd/compile: move the SSA local type definitions to a single location

Fixes #20304

Change-Id: I52ee02d1602ed7fffc96b27fd60990203c771aaf
Reviewed-on: https://go-review.googlesource.com/94256
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>

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

@@ -24,31 +24,7 @@ var ssaConfig *ssa.Config
 var ssaCaches []ssa.Cache
 
 func initssaconfig() {
-	types_ := ssa.Types{
-		Bool:       types.Types[TBOOL],
-		Int8:       types.Types[TINT8],
-		Int16:      types.Types[TINT16],
-		Int32:      types.Types[TINT32],
-		Int64:      types.Types[TINT64],
-		UInt8:      types.Types[TUINT8],
-		UInt16:     types.Types[TUINT16],
-		UInt32:     types.Types[TUINT32],
-		UInt64:     types.Types[TUINT64],
-		Float32:    types.Types[TFLOAT32],
-		Float64:    types.Types[TFLOAT64],
-		Int:        types.Types[TINT],
-		UInt:       types.Types[TUINT],
-		Uintptr:    types.Types[TUINTPTR],
-		String:     types.Types[TSTRING],
-		BytePtr:    types.NewPtr(types.Types[TUINT8]),
-		Int32Ptr:   types.NewPtr(types.Types[TINT32]),
-		UInt32Ptr:  types.NewPtr(types.Types[TUINT32]),
-		IntPtr:     types.NewPtr(types.Types[TINT]),
-		UintptrPtr: types.NewPtr(types.Types[TUINTPTR]),
-		Float32Ptr: types.NewPtr(types.Types[TFLOAT32]),
-		Float64Ptr: types.NewPtr(types.Types[TFLOAT64]),
-		BytePtrPtr: types.NewPtr(types.NewPtr(types.Types[TUINT8])),
-	}
+	types_ := ssa.NewTypes()
 
 	if thearch.SoftFloat {
 		softfloatInit()
@@ -69,7 +45,7 @@ func initssaconfig() {
 	_ = types.NewPtr(types.Types[TINT64])                             // *int64
 	_ = types.NewPtr(types.Errortype)                                 // *error
 	types.NewPtrCacheEnabled = false
-	ssaConfig = ssa.NewConfig(thearch.LinkArch.Name, types_, Ctxt, Debug['N'] == 0)
+	ssaConfig = ssa.NewConfig(thearch.LinkArch.Name, *types_, Ctxt, Debug['N'] == 0)
 	if thearch.LinkArch.Name == "386" {
 		ssaConfig.Set387(thearch.Use387)
 	}

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

@@ -73,6 +73,39 @@ type Types struct {
 	BytePtrPtr *types.Type
 }
 
+// Instantiate the SSA type pointers.
+func NewTypes() *Types {
+	t := new(Types)
+	t.SetTypPtrs()
+	return t
+}
+
+// Populate the SSA type pointers.
+func (t *Types) SetTypPtrs() {
+	t.Bool = types.Types[types.TBOOL]
+	t.Int8 = types.Types[types.TINT8]
+	t.Int16 = types.Types[types.TINT16]
+	t.Int32 = types.Types[types.TINT32]
+	t.Int64 = types.Types[types.TINT64]
+	t.UInt8 = types.Types[types.TUINT8]
+	t.UInt16 = types.Types[types.TUINT16]
+	t.UInt32 = types.Types[types.TUINT32]
+	t.UInt64 = types.Types[types.TUINT64]
+	t.Float32 = types.Types[types.TFLOAT32]
+	t.Float64 = types.Types[types.TFLOAT64]
+	t.Int = types.Types[types.TINT]
+	t.Uintptr = types.Types[types.TUINTPTR]
+	t.String = types.Types[types.TSTRING]
+	t.BytePtr = types.NewPtr(types.Types[types.TUINT8])
+	t.Int32Ptr = types.NewPtr(types.Types[types.TINT32])
+	t.UInt32Ptr = types.NewPtr(types.Types[types.TUINT32])
+	t.IntPtr = types.NewPtr(types.Types[types.TINT])
+	t.UintptrPtr = types.NewPtr(types.Types[types.TUINTPTR])
+	t.Float32Ptr = types.NewPtr(types.Types[types.TFLOAT32])
+	t.Float64Ptr = types.NewPtr(types.Types[types.TFLOAT64])
+	t.BytePtrPtr = types.NewPtr(types.NewPtr(types.Types[types.TUINT8]))
+}
+
 type Logger interface {
 	// Logf logs a message from the compiler.
 	Logf(string, ...interface{})

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

@@ -184,31 +184,7 @@ func init() {
 		t.Align = uint8(typ.width)
 		types.Types[typ.et] = t
 	}
-
-	dummyTypes = Types{
-		Bool:       types.Types[types.TBOOL],
-		Int8:       types.Types[types.TINT8],
-		Int16:      types.Types[types.TINT16],
-		Int32:      types.Types[types.TINT32],
-		Int64:      types.Types[types.TINT64],
-		UInt8:      types.Types[types.TUINT8],
-		UInt16:     types.Types[types.TUINT16],
-		UInt32:     types.Types[types.TUINT32],
-		UInt64:     types.Types[types.TUINT64],
-		Float32:    types.Types[types.TFLOAT32],
-		Float64:    types.Types[types.TFLOAT64],
-		Int:        types.Types[types.TINT],
-		Uintptr:    types.Types[types.TUINTPTR],
-		String:     types.Types[types.TSTRING],
-		BytePtr:    types.NewPtr(types.Types[types.TUINT8]),
-		Int32Ptr:   types.NewPtr(types.Types[types.TINT32]),
-		UInt32Ptr:  types.NewPtr(types.Types[types.TUINT32]),
-		IntPtr:     types.NewPtr(types.Types[types.TINT]),
-		UintptrPtr: types.NewPtr(types.Types[types.TUINTPTR]),
-		Float32Ptr: types.NewPtr(types.Types[types.TFLOAT32]),
-		Float64Ptr: types.NewPtr(types.Types[types.TFLOAT64]),
-		BytePtrPtr: types.NewPtr(types.NewPtr(types.Types[types.TUINT8])),
-	}
+	dummyTypes.SetTypPtrs()
 }
 
 func (d DummyFrontend) DerefItab(sym *obj.LSym, off int64) *obj.LSym { return nil }