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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 (
"testing"
"cmd/compile/internal/ir"
"cmd/compile/internal/typecheck"
"cmd/compile/internal/types"
"cmd/internal/obj"
"cmd/internal/obj/arm64"
"cmd/internal/obj/s390x"
"cmd/internal/obj/x86"
"cmd/internal/src"
)
var CheckFunc = checkFunc
var Opt = opt
var Deadcode = deadcode
var Copyelim = copyelim
var testCtxts = map[string]*obj.Link{
"amd64": obj.Linknew(&x86.Linkamd64),
"s390x": obj.Linknew(&s390x.Links390x),
"arm64": obj.Linknew(&arm64.Linkarm64),
}
func testConfig(tb testing.TB) *Conf { return testConfigArch(tb, "amd64") }
func testConfigS390X(tb testing.TB) *Conf { return testConfigArch(tb, "s390x") }
func testConfigARM64(tb testing.TB) *Conf { return testConfigArch(tb, "arm64") }
func testConfigArch(tb testing.TB, arch string) *Conf {
ctxt, ok := testCtxts[arch]
if !ok {
tb.Fatalf("unknown arch %s", arch)
}
if ctxt.Arch.PtrSize != 8 {
tb.Fatal("testTypes is 64-bit only")
}
c := &Conf{
config: NewConfig(arch, testTypes, ctxt, true, false),
tb: tb,
}
return c
}
type Conf struct {
config *Config
tb testing.TB
fe Frontend
}
func (c *Conf) Frontend() Frontend {
if c.fe == nil {
f := ir.NewFunc(src.NoXPos)
f.Nname = ir.NewNameAt(f.Pos(), &types.Sym{
Pkg: types.NewPkg("my/import/path", "path"),
Name: "function",
})
f.LSym = &obj.LSym{Name: "my/import/path.function"}
c.fe = TestFrontend{
t: c.tb,
ctxt: c.config.ctxt,
f: f,
}
}
return c.fe
}
// TestFrontend is a test-only frontend.
// It assumes 64 bit integers and pointers.
type TestFrontend struct {
t testing.TB
ctxt *obj.Link
f *ir.Func
}
func (TestFrontend) StringData(s string) *obj.LSym {
return nil
}
func (TestFrontend) Auto(pos src.XPos, t *types.Type) *ir.Name {
n := ir.NewNameAt(pos, &types.Sym{Name: "aFakeAuto"})
n.SetType(t)
n.Class = ir.PAUTO
return n
}
func (d TestFrontend) SplitSlot(parent *LocalSlot, suffix string, offset int64, t *types.Type) LocalSlot {
return LocalSlot{N: parent.N, Type: t, Off: offset}
}
func (TestFrontend) AllocFrame(f *Func) {
}
func (d TestFrontend) Syslook(s string) *obj.LSym {
return d.ctxt.Lookup(s)
}
func (TestFrontend) UseWriteBarrier() bool {
return true // only writebarrier_test cares
}
func (d TestFrontend) Logf(msg string, args ...interface{}) { d.t.Logf(msg, args...) }
func (d TestFrontend) Log() bool { return true }
func (d TestFrontend) Fatalf(_ src.XPos, msg string, args ...interface{}) { d.t.Fatalf(msg, args...) }
func (d TestFrontend) Warnl(_ src.XPos, msg string, args ...interface{}) { d.t.Logf(msg, args...) }
func (d TestFrontend) Debug_checknil() bool { return false }
func (d TestFrontend) MyImportPath() string {
return d.f.Sym().Pkg.Path
}
func (d TestFrontend) Func() *ir.Func {
return d.f
}
var testTypes Types
func init() {
// TODO(mdempsky): Push into types.InitUniverse or typecheck.InitUniverse.
types.PtrSize = 8
types.RegSize = 8
types.MaxWidth = 1 << 50
typecheck.InitUniverse()
testTypes.SetTypPtrs()
}
func (d TestFrontend) DerefItab(sym *obj.LSym, off int64) *obj.LSym { return nil }
func (d TestFrontend) CanSSA(t *types.Type) bool {
// There are no un-SSAable types in test land.
return true
}
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