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// Copyright 2015 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 ssa
import (
"cmd/internal/obj"
"cmd/internal/obj/s390x"
"cmd/internal/obj/x86"
"cmd/internal/src"
"testing"
)
var CheckFunc = checkFunc
var Opt = opt
var Deadcode = deadcode
var Copyelim = copyelim
var TestCtxt = obj.Linknew(&x86.Linkamd64)
func testConfig(t testing.TB) *Config {
return NewConfig("amd64", dummyTypes, TestCtxt, true)
}
func testConfigS390X(t testing.TB) *Config {
return NewConfig("s390x", dummyTypes, obj.Linknew(&s390x.Links390x), true)
}
// DummyFrontend is a test-only frontend.
// It assumes 64 bit integers and pointers.
type DummyFrontend struct {
t testing.TB
}
type DummyAuto struct {
t Type
s string
}
func (d *DummyAuto) Typ() Type {
return d.t
}
func (d *DummyAuto) String() string {
return d.s
}
func (DummyFrontend) StringData(s string) interface{} {
return nil
}
func (DummyFrontend) Auto(t Type) GCNode {
return &DummyAuto{t: t, s: "aDummyAuto"}
}
func (d DummyFrontend) SplitString(s LocalSlot) (LocalSlot, LocalSlot) {
return LocalSlot{s.N, dummyTypes.BytePtr, s.Off}, LocalSlot{s.N, dummyTypes.Int, s.Off + 8}
}
func (d DummyFrontend) SplitInterface(s LocalSlot) (LocalSlot, LocalSlot) {
return LocalSlot{s.N, dummyTypes.BytePtr, s.Off}, LocalSlot{s.N, dummyTypes.BytePtr, s.Off + 8}
}
func (d DummyFrontend) SplitSlice(s LocalSlot) (LocalSlot, LocalSlot, LocalSlot) {
return LocalSlot{s.N, s.Type.ElemType().PtrTo(), s.Off},
LocalSlot{s.N, dummyTypes.Int, s.Off + 8},
LocalSlot{s.N, dummyTypes.Int, s.Off + 16}
}
func (d DummyFrontend) SplitComplex(s LocalSlot) (LocalSlot, LocalSlot) {
if s.Type.Size() == 16 {
return LocalSlot{s.N, dummyTypes.Float64, s.Off}, LocalSlot{s.N, dummyTypes.Float64, s.Off + 8}
}
return LocalSlot{s.N, dummyTypes.Float32, s.Off}, LocalSlot{s.N, dummyTypes.Float32, s.Off + 4}
}
func (d DummyFrontend) SplitInt64(s LocalSlot) (LocalSlot, LocalSlot) {
if s.Type.IsSigned() {
return LocalSlot{s.N, dummyTypes.Int32, s.Off + 4}, LocalSlot{s.N, dummyTypes.UInt32, s.Off}
}
return LocalSlot{s.N, dummyTypes.UInt32, s.Off + 4}, LocalSlot{s.N, dummyTypes.UInt32, s.Off}
}
func (d DummyFrontend) SplitStruct(s LocalSlot, i int) LocalSlot {
return LocalSlot{s.N, s.Type.FieldType(i), s.Off + s.Type.FieldOff(i)}
}
func (d DummyFrontend) SplitArray(s LocalSlot) LocalSlot {
return LocalSlot{s.N, s.Type.ElemType(), s.Off}
}
func (DummyFrontend) Line(_ src.XPos) string {
return "unknown.go:0"
}
func (DummyFrontend) AllocFrame(f *Func) {
}
func (DummyFrontend) Syslook(s string) *obj.LSym {
return obj.Linklookup(TestCtxt, s, 0)
}
func (DummyFrontend) UseWriteBarrier() bool {
return true // only writebarrier_test cares
}
func (d DummyFrontend) Logf(msg string, args ...interface{}) { d.t.Logf(msg, args...) }
func (d DummyFrontend) Log() bool { return true }
func (d DummyFrontend) Fatalf(_ src.XPos, msg string, args ...interface{}) { d.t.Fatalf(msg, args...) }
func (d DummyFrontend) Error(_ src.XPos, msg string, args ...interface{}) { d.t.Errorf(msg, args...) }
func (d DummyFrontend) Warnl(_ src.XPos, msg string, args ...interface{}) { d.t.Logf(msg, args...) }
func (d DummyFrontend) Debug_checknil() bool { return false }
func (d DummyFrontend) Debug_wb() bool { return false }
var dummyTypes = Types{
Bool: TypeBool,
Int8: TypeInt8,
Int16: TypeInt16,
Int32: TypeInt32,
Int64: TypeInt64,
UInt8: TypeUInt8,
UInt16: TypeUInt16,
UInt32: TypeUInt32,
UInt64: TypeUInt64,
Float32: TypeFloat32,
Float64: TypeFloat64,
Int: TypeInt64,
Uintptr: TypeUInt64,
String: nil,
BytePtr: TypeBytePtr,
}
func (d DummyFrontend) DerefItab(sym *obj.LSym, off int64) *obj.LSym { return nil }
func (d DummyFrontend) CanSSA(t Type) bool {
// There are no un-SSAable types in dummy land.
return true
}
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