cmd/compile: decompose composite OpArg before decomposeUser

This makes it easier to track names of function arguments
for debugging purposes.

Change-Id: Ic34856fe0b910005e1c7bc051d769d489a4b158e
Reviewed-on: https://go-review.googlesource.com/c/150098
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>

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

@@ -365,6 +365,7 @@ var passes = [...]pass{
 	{name: "early copyelim", fn: copyelim},
 	{name: "early deadcode", fn: deadcode}, // remove generated dead code to avoid doing pointless work during opt
 	{name: "short circuit", fn: shortcircuit},
+	{name: "decompose args", fn: decomposeArgs, required: true},
 	{name: "decompose user", fn: decomposeUser, required: true},
 	{name: "opt", fn: opt, required: true},               // TODO: split required rules and optimizing rules
 	{name: "zero arg cse", fn: zcse, required: true},     // required to merge OpSB values

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

@@ -214,6 +214,10 @@ func decomposeInterfacePhi(v *Value) {
 	v.AddArg(data)
 }
 
+func decomposeArgs(f *Func) {
+	applyRewrite(f, rewriteBlockdecArgs, rewriteValuedecArgs)
+}
+
 func decomposeUser(f *Func) {
 	for _, b := range f.Blocks {
 		for _, v := range b.Values {

src/cmd/compile/internal/ssa/gen/decArgs.rules

@@ -0,0 +1,58 @@
+// 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.
+
+// Decompose compound argument values
+// Do this early to simplify tracking names for debugging.
+
+(Arg {n} [off]) && v.Type.IsString() ->
+  (StringMake
+    (Arg <typ.BytePtr> {n} [off])
+    (Arg <typ.Int> {n} [off+config.PtrSize]))
+
+(Arg {n} [off]) && v.Type.IsSlice() ->
+  (SliceMake
+    (Arg <v.Type.Elem().PtrTo()> {n} [off])
+    (Arg <typ.Int> {n} [off+config.PtrSize])
+    (Arg <typ.Int> {n} [off+2*config.PtrSize]))
+
+(Arg {n} [off]) && v.Type.IsInterface() ->
+  (IMake
+    (Arg <typ.Uintptr> {n} [off])
+    (Arg <typ.BytePtr> {n} [off+config.PtrSize]))
+
+(Arg {n} [off]) && v.Type.IsComplex() && v.Type.Size() == 16 ->
+  (ComplexMake
+    (Arg <typ.Float64> {n} [off])
+    (Arg <typ.Float64> {n} [off+8]))
+
+(Arg {n} [off]) && v.Type.IsComplex() && v.Type.Size() == 8 ->
+  (ComplexMake
+    (Arg <typ.Float32> {n} [off])
+    (Arg <typ.Float32> {n} [off+4]))
+
+(Arg <t>) && t.IsStruct() && t.NumFields() == 0 && fe.CanSSA(t) ->
+  (StructMake0)
+(Arg <t> {n} [off]) && t.IsStruct() && t.NumFields() == 1 && fe.CanSSA(t) ->
+  (StructMake1
+    (Arg <t.FieldType(0)> {n} [off+t.FieldOff(0)]))
+(Arg <t> {n} [off]) && t.IsStruct() && t.NumFields() == 2 && fe.CanSSA(t) ->
+  (StructMake2
+    (Arg <t.FieldType(0)> {n} [off+t.FieldOff(0)])
+    (Arg <t.FieldType(1)> {n} [off+t.FieldOff(1)]))
+(Arg <t> {n} [off]) && t.IsStruct() && t.NumFields() == 3 && fe.CanSSA(t) ->
+  (StructMake3
+    (Arg <t.FieldType(0)> {n} [off+t.FieldOff(0)])
+    (Arg <t.FieldType(1)> {n} [off+t.FieldOff(1)])
+    (Arg <t.FieldType(2)> {n} [off+t.FieldOff(2)]))
+(Arg <t> {n} [off]) && t.IsStruct() && t.NumFields() == 4 && fe.CanSSA(t) ->
+  (StructMake4
+    (Arg <t.FieldType(0)> {n} [off+t.FieldOff(0)])
+    (Arg <t.FieldType(1)> {n} [off+t.FieldOff(1)])
+    (Arg <t.FieldType(2)> {n} [off+t.FieldOff(2)])
+    (Arg <t.FieldType(3)> {n} [off+t.FieldOff(3)]))
+
+(Arg <t>) && t.IsArray() && t.NumElem() == 0 ->
+  (ArrayMake0)
+(Arg <t> {n} [off]) && t.IsArray() && t.NumElem() == 1 && fe.CanSSA(t) ->
+  (ArrayMake1 (Arg <t.Elem()> {n} [off]))

src/cmd/compile/internal/ssa/gen/decArgsOps.go

@@ -0,0 +1,20 @@
+// 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.
+
+// +build ignore
+
+package main
+
+var decArgsOps = []opData{}
+
+var decArgsBlocks = []blockData{}
+
+func init() {
+	archs = append(archs, arch{
+		name:    "decArgs",
+		ops:     decArgsOps,
+		blocks:  decArgsBlocks,
+		generic: true,
+	})
+}

src/cmd/compile/internal/ssa/gen/generic.rules

@@ -871,59 +871,6 @@
 (Convert (Add(64|32) (Convert ptr mem) off) mem) -> (Add(64|32) ptr off)
 (Convert (Convert ptr mem) mem) -> ptr
 
-// Decompose compound argument values
-(Arg {n} [off]) && v.Type.IsString() ->
-  (StringMake
-    (Arg <typ.BytePtr> {n} [off])
-    (Arg <typ.Int> {n} [off+config.PtrSize]))
-
-(Arg {n} [off]) && v.Type.IsSlice() ->
-  (SliceMake
-    (Arg <v.Type.Elem().PtrTo()> {n} [off])
-    (Arg <typ.Int> {n} [off+config.PtrSize])
-    (Arg <typ.Int> {n} [off+2*config.PtrSize]))
-
-(Arg {n} [off]) && v.Type.IsInterface() ->
-  (IMake
-    (Arg <typ.Uintptr> {n} [off])
-    (Arg <typ.BytePtr> {n} [off+config.PtrSize]))
-
-(Arg {n} [off]) && v.Type.IsComplex() && v.Type.Size() == 16 ->
-  (ComplexMake
-    (Arg <typ.Float64> {n} [off])
-    (Arg <typ.Float64> {n} [off+8]))
-
-(Arg {n} [off]) && v.Type.IsComplex() && v.Type.Size() == 8 ->
-  (ComplexMake
-    (Arg <typ.Float32> {n} [off])
-    (Arg <typ.Float32> {n} [off+4]))
-
-(Arg <t>) && t.IsStruct() && t.NumFields() == 0 && fe.CanSSA(t) ->
-  (StructMake0)
-(Arg <t> {n} [off]) && t.IsStruct() && t.NumFields() == 1 && fe.CanSSA(t) ->
-  (StructMake1
-    (Arg <t.FieldType(0)> {n} [off+t.FieldOff(0)]))
-(Arg <t> {n} [off]) && t.IsStruct() && t.NumFields() == 2 && fe.CanSSA(t) ->
-  (StructMake2
-    (Arg <t.FieldType(0)> {n} [off+t.FieldOff(0)])
-    (Arg <t.FieldType(1)> {n} [off+t.FieldOff(1)]))
-(Arg <t> {n} [off]) && t.IsStruct() && t.NumFields() == 3 && fe.CanSSA(t) ->
-  (StructMake3
-    (Arg <t.FieldType(0)> {n} [off+t.FieldOff(0)])
-    (Arg <t.FieldType(1)> {n} [off+t.FieldOff(1)])
-    (Arg <t.FieldType(2)> {n} [off+t.FieldOff(2)]))
-(Arg <t> {n} [off]) && t.IsStruct() && t.NumFields() == 4 && fe.CanSSA(t) ->
-  (StructMake4
-    (Arg <t.FieldType(0)> {n} [off+t.FieldOff(0)])
-    (Arg <t.FieldType(1)> {n} [off+t.FieldOff(1)])
-    (Arg <t.FieldType(2)> {n} [off+t.FieldOff(2)])
-    (Arg <t.FieldType(3)> {n} [off+t.FieldOff(3)]))
-
-(Arg <t>) && t.IsArray() && t.NumElem() == 0 ->
-  (ArrayMake0)
-(Arg <t> {n} [off]) && t.IsArray() && t.NumElem() == 1 && fe.CanSSA(t) ->
-  (ArrayMake1 (Arg <t.Elem()> {n} [off]))
-
 // strength reduction of divide by a constant.
 // See ../magic.go for a detailed description of these algorithms.
 

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

@@ -0,0 +1,288 @@
+// Code generated from gen/decArgs.rules; DO NOT EDIT.
+// generated with: cd gen; go run *.go
+
+package ssa
+
+import "fmt"
+import "math"
+import "cmd/internal/obj"
+import "cmd/internal/objabi"
+import "cmd/compile/internal/types"
+
+var _ = fmt.Println   // in case not otherwise used
+var _ = math.MinInt8  // in case not otherwise used
+var _ = obj.ANOP      // in case not otherwise used
+var _ = objabi.GOROOT // in case not otherwise used
+var _ = types.TypeMem // in case not otherwise used
+
+func rewriteValuedecArgs(v *Value) bool {
+	switch v.Op {
+	case OpArg:
+		return rewriteValuedecArgs_OpArg_0(v) || rewriteValuedecArgs_OpArg_10(v)
+	}
+	return false
+}
+func rewriteValuedecArgs_OpArg_0(v *Value) bool {
+	b := v.Block
+	_ = b
+	config := b.Func.Config
+	_ = config
+	fe := b.Func.fe
+	_ = fe
+	typ := &b.Func.Config.Types
+	_ = typ
+	// match: (Arg {n} [off])
+	// cond: v.Type.IsString()
+	// result: (StringMake (Arg <typ.BytePtr> {n} [off]) (Arg <typ.Int> {n} [off+config.PtrSize]))
+	for {
+		off := v.AuxInt
+		n := v.Aux
+		if !(v.Type.IsString()) {
+			break
+		}
+		v.reset(OpStringMake)
+		v0 := b.NewValue0(v.Pos, OpArg, typ.BytePtr)
+		v0.AuxInt = off
+		v0.Aux = n
+		v.AddArg(v0)
+		v1 := b.NewValue0(v.Pos, OpArg, typ.Int)
+		v1.AuxInt = off + config.PtrSize
+		v1.Aux = n
+		v.AddArg(v1)
+		return true
+	}
+	// match: (Arg {n} [off])
+	// cond: v.Type.IsSlice()
+	// result: (SliceMake (Arg <v.Type.Elem().PtrTo()> {n} [off]) (Arg <typ.Int> {n} [off+config.PtrSize]) (Arg <typ.Int> {n} [off+2*config.PtrSize]))
+	for {
+		off := v.AuxInt
+		n := v.Aux
+		if !(v.Type.IsSlice()) {
+			break
+		}
+		v.reset(OpSliceMake)
+		v0 := b.NewValue0(v.Pos, OpArg, v.Type.Elem().PtrTo())
+		v0.AuxInt = off
+		v0.Aux = n
+		v.AddArg(v0)
+		v1 := b.NewValue0(v.Pos, OpArg, typ.Int)
+		v1.AuxInt = off + config.PtrSize
+		v1.Aux = n
+		v.AddArg(v1)
+		v2 := b.NewValue0(v.Pos, OpArg, typ.Int)
+		v2.AuxInt = off + 2*config.PtrSize
+		v2.Aux = n
+		v.AddArg(v2)
+		return true
+	}
+	// match: (Arg {n} [off])
+	// cond: v.Type.IsInterface()
+	// result: (IMake (Arg <typ.Uintptr> {n} [off]) (Arg <typ.BytePtr> {n} [off+config.PtrSize]))
+	for {
+		off := v.AuxInt
+		n := v.Aux
+		if !(v.Type.IsInterface()) {
+			break
+		}
+		v.reset(OpIMake)
+		v0 := b.NewValue0(v.Pos, OpArg, typ.Uintptr)
+		v0.AuxInt = off
+		v0.Aux = n
+		v.AddArg(v0)
+		v1 := b.NewValue0(v.Pos, OpArg, typ.BytePtr)
+		v1.AuxInt = off + config.PtrSize
+		v1.Aux = n
+		v.AddArg(v1)
+		return true
+	}
+	// match: (Arg {n} [off])
+	// cond: v.Type.IsComplex() && v.Type.Size() == 16
+	// result: (ComplexMake (Arg <typ.Float64> {n} [off]) (Arg <typ.Float64> {n} [off+8]))
+	for {
+		off := v.AuxInt
+		n := v.Aux
+		if !(v.Type.IsComplex() && v.Type.Size() == 16) {
+			break
+		}
+		v.reset(OpComplexMake)
+		v0 := b.NewValue0(v.Pos, OpArg, typ.Float64)
+		v0.AuxInt = off
+		v0.Aux = n
+		v.AddArg(v0)
+		v1 := b.NewValue0(v.Pos, OpArg, typ.Float64)
+		v1.AuxInt = off + 8
+		v1.Aux = n
+		v.AddArg(v1)
+		return true
+	}
+	// match: (Arg {n} [off])
+	// cond: v.Type.IsComplex() && v.Type.Size() == 8
+	// result: (ComplexMake (Arg <typ.Float32> {n} [off]) (Arg <typ.Float32> {n} [off+4]))
+	for {
+		off := v.AuxInt
+		n := v.Aux
+		if !(v.Type.IsComplex() && v.Type.Size() == 8) {
+			break
+		}
+		v.reset(OpComplexMake)
+		v0 := b.NewValue0(v.Pos, OpArg, typ.Float32)
+		v0.AuxInt = off
+		v0.Aux = n
+		v.AddArg(v0)
+		v1 := b.NewValue0(v.Pos, OpArg, typ.Float32)
+		v1.AuxInt = off + 4
+		v1.Aux = n
+		v.AddArg(v1)
+		return true
+	}
+	// match: (Arg <t>)
+	// cond: t.IsStruct() && t.NumFields() == 0 && fe.CanSSA(t)
+	// result: (StructMake0)
+	for {
+		t := v.Type
+		if !(t.IsStruct() && t.NumFields() == 0 && fe.CanSSA(t)) {
+			break
+		}
+		v.reset(OpStructMake0)
+		return true
+	}
+	// match: (Arg <t> {n} [off])
+	// cond: t.IsStruct() && t.NumFields() == 1 && fe.CanSSA(t)
+	// result: (StructMake1 (Arg <t.FieldType(0)> {n} [off+t.FieldOff(0)]))
+	for {
+		t := v.Type
+		off := v.AuxInt
+		n := v.Aux
+		if !(t.IsStruct() && t.NumFields() == 1 && fe.CanSSA(t)) {
+			break
+		}
+		v.reset(OpStructMake1)
+		v0 := b.NewValue0(v.Pos, OpArg, t.FieldType(0))
+		v0.AuxInt = off + t.FieldOff(0)
+		v0.Aux = n
+		v.AddArg(v0)
+		return true
+	}
+	// match: (Arg <t> {n} [off])
+	// cond: t.IsStruct() && t.NumFields() == 2 && fe.CanSSA(t)
+	// result: (StructMake2 (Arg <t.FieldType(0)> {n} [off+t.FieldOff(0)]) (Arg <t.FieldType(1)> {n} [off+t.FieldOff(1)]))
+	for {
+		t := v.Type
+		off := v.AuxInt
+		n := v.Aux
+		if !(t.IsStruct() && t.NumFields() == 2 && fe.CanSSA(t)) {
+			break
+		}
+		v.reset(OpStructMake2)
+		v0 := b.NewValue0(v.Pos, OpArg, t.FieldType(0))
+		v0.AuxInt = off + t.FieldOff(0)
+		v0.Aux = n
+		v.AddArg(v0)
+		v1 := b.NewValue0(v.Pos, OpArg, t.FieldType(1))
+		v1.AuxInt = off + t.FieldOff(1)
+		v1.Aux = n
+		v.AddArg(v1)
+		return true
+	}
+	// match: (Arg <t> {n} [off])
+	// cond: t.IsStruct() && t.NumFields() == 3 && fe.CanSSA(t)
+	// result: (StructMake3 (Arg <t.FieldType(0)> {n} [off+t.FieldOff(0)]) (Arg <t.FieldType(1)> {n} [off+t.FieldOff(1)]) (Arg <t.FieldType(2)> {n} [off+t.FieldOff(2)]))
+	for {
+		t := v.Type
+		off := v.AuxInt
+		n := v.Aux
+		if !(t.IsStruct() && t.NumFields() == 3 && fe.CanSSA(t)) {
+			break
+		}
+		v.reset(OpStructMake3)
+		v0 := b.NewValue0(v.Pos, OpArg, t.FieldType(0))
+		v0.AuxInt = off + t.FieldOff(0)
+		v0.Aux = n
+		v.AddArg(v0)
+		v1 := b.NewValue0(v.Pos, OpArg, t.FieldType(1))
+		v1.AuxInt = off + t.FieldOff(1)
+		v1.Aux = n
+		v.AddArg(v1)
+		v2 := b.NewValue0(v.Pos, OpArg, t.FieldType(2))
+		v2.AuxInt = off + t.FieldOff(2)
+		v2.Aux = n
+		v.AddArg(v2)
+		return true
+	}
+	// match: (Arg <t> {n} [off])
+	// cond: t.IsStruct() && t.NumFields() == 4 && fe.CanSSA(t)
+	// result: (StructMake4 (Arg <t.FieldType(0)> {n} [off+t.FieldOff(0)]) (Arg <t.FieldType(1)> {n} [off+t.FieldOff(1)]) (Arg <t.FieldType(2)> {n} [off+t.FieldOff(2)]) (Arg <t.FieldType(3)> {n} [off+t.FieldOff(3)]))
+	for {
+		t := v.Type
+		off := v.AuxInt
+		n := v.Aux
+		if !(t.IsStruct() && t.NumFields() == 4 && fe.CanSSA(t)) {
+			break
+		}
+		v.reset(OpStructMake4)
+		v0 := b.NewValue0(v.Pos, OpArg, t.FieldType(0))
+		v0.AuxInt = off + t.FieldOff(0)
+		v0.Aux = n
+		v.AddArg(v0)
+		v1 := b.NewValue0(v.Pos, OpArg, t.FieldType(1))
+		v1.AuxInt = off + t.FieldOff(1)
+		v1.Aux = n
+		v.AddArg(v1)
+		v2 := b.NewValue0(v.Pos, OpArg, t.FieldType(2))
+		v2.AuxInt = off + t.FieldOff(2)
+		v2.Aux = n
+		v.AddArg(v2)
+		v3 := b.NewValue0(v.Pos, OpArg, t.FieldType(3))
+		v3.AuxInt = off + t.FieldOff(3)
+		v3.Aux = n
+		v.AddArg(v3)
+		return true
+	}
+	return false
+}
+func rewriteValuedecArgs_OpArg_10(v *Value) bool {
+	b := v.Block
+	_ = b
+	fe := b.Func.fe
+	_ = fe
+	// match: (Arg <t>)
+	// cond: t.IsArray() && t.NumElem() == 0
+	// result: (ArrayMake0)
+	for {
+		t := v.Type
+		if !(t.IsArray() && t.NumElem() == 0) {
+			break
+		}
+		v.reset(OpArrayMake0)
+		return true
+	}
+	// match: (Arg <t> {n} [off])
+	// cond: t.IsArray() && t.NumElem() == 1 && fe.CanSSA(t)
+	// result: (ArrayMake1 (Arg <t.Elem()> {n} [off]))
+	for {
+		t := v.Type
+		off := v.AuxInt
+		n := v.Aux
+		if !(t.IsArray() && t.NumElem() == 1 && fe.CanSSA(t)) {
+			break
+		}
+		v.reset(OpArrayMake1)
+		v0 := b.NewValue0(v.Pos, OpArg, t.Elem())
+		v0.AuxInt = off
+		v0.Aux = n
+		v.AddArg(v0)
+		return true
+	}
+	return false
+}
+func rewriteBlockdecArgs(b *Block) bool {
+	config := b.Func.Config
+	_ = config
+	fe := b.Func.fe
+	_ = fe
+	typ := &config.Types
+	_ = typ
+	switch b.Kind {
+	}
+	return false
+}

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

@@ -39,8 +39,6 @@ func rewriteValuegeneric(v *Value) bool {
 		return rewriteValuegeneric_OpAnd64_0(v) || rewriteValuegeneric_OpAnd64_10(v) || rewriteValuegeneric_OpAnd64_20(v)
 	case OpAnd8:
 		return rewriteValuegeneric_OpAnd8_0(v) || rewriteValuegeneric_OpAnd8_10(v) || rewriteValuegeneric_OpAnd8_20(v)
-	case OpArg:
-		return rewriteValuegeneric_OpArg_0(v) || rewriteValuegeneric_OpArg_10(v)
 	case OpArraySelect:
 		return rewriteValuegeneric_OpArraySelect_0(v)
 	case OpCom16:
@@ -6817,259 +6815,6 @@ func rewriteValuegeneric_OpAnd8_20(v *Value) bool {
 	}
 	return false
 }
-func rewriteValuegeneric_OpArg_0(v *Value) bool {
-	b := v.Block
-	_ = b
-	config := b.Func.Config
-	_ = config
-	fe := b.Func.fe
-	_ = fe
-	typ := &b.Func.Config.Types
-	_ = typ
-	// match: (Arg {n} [off])
-	// cond: v.Type.IsString()
-	// result: (StringMake (Arg <typ.BytePtr> {n} [off]) (Arg <typ.Int> {n} [off+config.PtrSize]))
-	for {
-		off := v.AuxInt
-		n := v.Aux
-		if !(v.Type.IsString()) {
-			break
-		}
-		v.reset(OpStringMake)
-		v0 := b.NewValue0(v.Pos, OpArg, typ.BytePtr)
-		v0.AuxInt = off
-		v0.Aux = n
-		v.AddArg(v0)
-		v1 := b.NewValue0(v.Pos, OpArg, typ.Int)
-		v1.AuxInt = off + config.PtrSize
-		v1.Aux = n
-		v.AddArg(v1)
-		return true
-	}
-	// match: (Arg {n} [off])
-	// cond: v.Type.IsSlice()
-	// result: (SliceMake (Arg <v.Type.Elem().PtrTo()> {n} [off]) (Arg <typ.Int> {n} [off+config.PtrSize]) (Arg <typ.Int> {n} [off+2*config.PtrSize]))
-	for {
-		off := v.AuxInt
-		n := v.Aux
-		if !(v.Type.IsSlice()) {
-			break
-		}
-		v.reset(OpSliceMake)
-		v0 := b.NewValue0(v.Pos, OpArg, v.Type.Elem().PtrTo())
-		v0.AuxInt = off
-		v0.Aux = n
-		v.AddArg(v0)
-		v1 := b.NewValue0(v.Pos, OpArg, typ.Int)
-		v1.AuxInt = off + config.PtrSize
-		v1.Aux = n
-		v.AddArg(v1)
-		v2 := b.NewValue0(v.Pos, OpArg, typ.Int)
-		v2.AuxInt = off + 2*config.PtrSize
-		v2.Aux = n
-		v.AddArg(v2)
-		return true
-	}
-	// match: (Arg {n} [off])
-	// cond: v.Type.IsInterface()
-	// result: (IMake (Arg <typ.Uintptr> {n} [off]) (Arg <typ.BytePtr> {n} [off+config.PtrSize]))
-	for {
-		off := v.AuxInt
-		n := v.Aux
-		if !(v.Type.IsInterface()) {
-			break
-		}
-		v.reset(OpIMake)
-		v0 := b.NewValue0(v.Pos, OpArg, typ.Uintptr)
-		v0.AuxInt = off
-		v0.Aux = n
-		v.AddArg(v0)
-		v1 := b.NewValue0(v.Pos, OpArg, typ.BytePtr)
-		v1.AuxInt = off + config.PtrSize
-		v1.Aux = n
-		v.AddArg(v1)
-		return true
-	}
-	// match: (Arg {n} [off])
-	// cond: v.Type.IsComplex() && v.Type.Size() == 16
-	// result: (ComplexMake (Arg <typ.Float64> {n} [off]) (Arg <typ.Float64> {n} [off+8]))
-	for {
-		off := v.AuxInt
-		n := v.Aux
-		if !(v.Type.IsComplex() && v.Type.Size() == 16) {
-			break
-		}
-		v.reset(OpComplexMake)
-		v0 := b.NewValue0(v.Pos, OpArg, typ.Float64)
-		v0.AuxInt = off
-		v0.Aux = n
-		v.AddArg(v0)
-		v1 := b.NewValue0(v.Pos, OpArg, typ.Float64)
-		v1.AuxInt = off + 8
-		v1.Aux = n
-		v.AddArg(v1)
-		return true
-	}
-	// match: (Arg {n} [off])
-	// cond: v.Type.IsComplex() && v.Type.Size() == 8
-	// result: (ComplexMake (Arg <typ.Float32> {n} [off]) (Arg <typ.Float32> {n} [off+4]))
-	for {
-		off := v.AuxInt
-		n := v.Aux
-		if !(v.Type.IsComplex() && v.Type.Size() == 8) {
-			break
-		}
-		v.reset(OpComplexMake)
-		v0 := b.NewValue0(v.Pos, OpArg, typ.Float32)
-		v0.AuxInt = off
-		v0.Aux = n
-		v.AddArg(v0)
-		v1 := b.NewValue0(v.Pos, OpArg, typ.Float32)
-		v1.AuxInt = off + 4
-		v1.Aux = n
-		v.AddArg(v1)
-		return true
-	}
-	// match: (Arg <t>)
-	// cond: t.IsStruct() && t.NumFields() == 0 && fe.CanSSA(t)
-	// result: (StructMake0)
-	for {
-		t := v.Type
-		if !(t.IsStruct() && t.NumFields() == 0 && fe.CanSSA(t)) {
-			break
-		}
-		v.reset(OpStructMake0)
-		return true
-	}
-	// match: (Arg <t> {n} [off])
-	// cond: t.IsStruct() && t.NumFields() == 1 && fe.CanSSA(t)
-	// result: (StructMake1 (Arg <t.FieldType(0)> {n} [off+t.FieldOff(0)]))
-	for {
-		t := v.Type
-		off := v.AuxInt
-		n := v.Aux
-		if !(t.IsStruct() && t.NumFields() == 1 && fe.CanSSA(t)) {
-			break
-		}
-		v.reset(OpStructMake1)
-		v0 := b.NewValue0(v.Pos, OpArg, t.FieldType(0))
-		v0.AuxInt = off + t.FieldOff(0)
-		v0.Aux = n
-		v.AddArg(v0)
-		return true
-	}
-	// match: (Arg <t> {n} [off])
-	// cond: t.IsStruct() && t.NumFields() == 2 && fe.CanSSA(t)
-	// result: (StructMake2 (Arg <t.FieldType(0)> {n} [off+t.FieldOff(0)]) (Arg <t.FieldType(1)> {n} [off+t.FieldOff(1)]))
-	for {
-		t := v.Type
-		off := v.AuxInt
-		n := v.Aux
-		if !(t.IsStruct() && t.NumFields() == 2 && fe.CanSSA(t)) {
-			break
-		}
-		v.reset(OpStructMake2)
-		v0 := b.NewValue0(v.Pos, OpArg, t.FieldType(0))
-		v0.AuxInt = off + t.FieldOff(0)
-		v0.Aux = n
-		v.AddArg(v0)
-		v1 := b.NewValue0(v.Pos, OpArg, t.FieldType(1))
-		v1.AuxInt = off + t.FieldOff(1)
-		v1.Aux = n
-		v.AddArg(v1)
-		return true
-	}
-	// match: (Arg <t> {n} [off])
-	// cond: t.IsStruct() && t.NumFields() == 3 && fe.CanSSA(t)
-	// result: (StructMake3 (Arg <t.FieldType(0)> {n} [off+t.FieldOff(0)]) (Arg <t.FieldType(1)> {n} [off+t.FieldOff(1)]) (Arg <t.FieldType(2)> {n} [off+t.FieldOff(2)]))
-	for {
-		t := v.Type
-		off := v.AuxInt
-		n := v.Aux
-		if !(t.IsStruct() && t.NumFields() == 3 && fe.CanSSA(t)) {
-			break
-		}
-		v.reset(OpStructMake3)
-		v0 := b.NewValue0(v.Pos, OpArg, t.FieldType(0))
-		v0.AuxInt = off + t.FieldOff(0)
-		v0.Aux = n
-		v.AddArg(v0)
-		v1 := b.NewValue0(v.Pos, OpArg, t.FieldType(1))
-		v1.AuxInt = off + t.FieldOff(1)
-		v1.Aux = n
-		v.AddArg(v1)
-		v2 := b.NewValue0(v.Pos, OpArg, t.FieldType(2))
-		v2.AuxInt = off + t.FieldOff(2)
-		v2.Aux = n
-		v.AddArg(v2)
-		return true
-	}
-	// match: (Arg <t> {n} [off])
-	// cond: t.IsStruct() && t.NumFields() == 4 && fe.CanSSA(t)
-	// result: (StructMake4 (Arg <t.FieldType(0)> {n} [off+t.FieldOff(0)]) (Arg <t.FieldType(1)> {n} [off+t.FieldOff(1)]) (Arg <t.FieldType(2)> {n} [off+t.FieldOff(2)]) (Arg <t.FieldType(3)> {n} [off+t.FieldOff(3)]))
-	for {
-		t := v.Type
-		off := v.AuxInt
-		n := v.Aux
-		if !(t.IsStruct() && t.NumFields() == 4 && fe.CanSSA(t)) {
-			break
-		}
-		v.reset(OpStructMake4)
-		v0 := b.NewValue0(v.Pos, OpArg, t.FieldType(0))
-		v0.AuxInt = off + t.FieldOff(0)
-		v0.Aux = n
-		v.AddArg(v0)
-		v1 := b.NewValue0(v.Pos, OpArg, t.FieldType(1))
-		v1.AuxInt = off + t.FieldOff(1)
-		v1.Aux = n
-		v.AddArg(v1)
-		v2 := b.NewValue0(v.Pos, OpArg, t.FieldType(2))
-		v2.AuxInt = off + t.FieldOff(2)
-		v2.Aux = n
-		v.AddArg(v2)
-		v3 := b.NewValue0(v.Pos, OpArg, t.FieldType(3))
-		v3.AuxInt = off + t.FieldOff(3)
-		v3.Aux = n
-		v.AddArg(v3)
-		return true
-	}
-	return false
-}
-func rewriteValuegeneric_OpArg_10(v *Value) bool {
-	b := v.Block
-	_ = b
-	fe := b.Func.fe
-	_ = fe
-	// match: (Arg <t>)
-	// cond: t.IsArray() && t.NumElem() == 0
-	// result: (ArrayMake0)
-	for {
-		t := v.Type
-		if !(t.IsArray() && t.NumElem() == 0) {
-			break
-		}
-		v.reset(OpArrayMake0)
-		return true
-	}
-	// match: (Arg <t> {n} [off])
-	// cond: t.IsArray() && t.NumElem() == 1 && fe.CanSSA(t)
-	// result: (ArrayMake1 (Arg <t.Elem()> {n} [off]))
-	for {
-		t := v.Type
-		off := v.AuxInt
-		n := v.Aux
-		if !(t.IsArray() && t.NumElem() == 1 && fe.CanSSA(t)) {
-			break
-		}
-		v.reset(OpArrayMake1)
-		v0 := b.NewValue0(v.Pos, OpArg, t.Elem())
-		v0.AuxInt = off
-		v0.Aux = n
-		v.AddArg(v0)
-		return true
-	}
-	return false
-}
 func rewriteValuegeneric_OpArraySelect_0(v *Value) bool {
 	// match: (ArraySelect (ArrayMake1 x))
 	// cond: