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package gen
import (
"bytes"
"fmt"
"strings"
"github.com/mmcloughlin/avo/internal/api"
"github.com/mmcloughlin/avo/internal/inst"
"github.com/mmcloughlin/avo/internal/prnt"
"github.com/mmcloughlin/avo/printer"
)
type ctorstest struct {
cfg printer.Config
prnt.Generator
}
// NewCtorsTest autogenerates tests for the constructors build by NewCtors.
func NewCtorsTest(cfg printer.Config) Interface {
return GoFmt(&ctorstest{cfg: cfg})
}
func (c *ctorstest) Generate(is []inst.Instruction) ([]byte, error) {
c.Printf("// %s\n\n", c.cfg.GeneratedWarning())
c.BuildTag("!integration")
c.NL()
c.Printf("package x86\n\n")
c.Printf("import (\n")
c.Printf("\t\"math\"\n")
c.Printf("\t\"testing\"\n")
c.NL()
c.Printf("\t%q\n", api.ImportPath(api.OperandPackage))
c.Printf("\t%q\n", api.ImportPath(api.RegisterPackage))
c.Printf(")\n\n")
DeclareTestArguments(&c.Generator)
fns := api.InstructionsFunctions(is)
for _, fn := range fns {
c.function(fn)
}
return c.Result()
}
func (c *ctorstest) function(fn *api.Function) {
c.Printf("func Test%sValidFormsNoError(t *testing.T) {", fn.Name())
for _, f := range fn.Forms {
s := TestSignature(f)
c.Printf("if _, err := %s(%s); err != nil { t.Fatal(err) }\n", fn.Name(), s.Arguments())
}
c.Printf("}\n\n")
}
type ctorsstress struct {
cfg printer.Config
prnt.Generator
}
// NewCtorsStress autogenerates stress tests for instruction constructors.
func NewCtorsStress(cfg printer.Config) Interface {
return GoFmt(&ctorsstress{cfg: cfg})
}
func (c *ctorsstress) Generate(is []inst.Instruction) ([]byte, error) {
c.Printf("// %s\n\n", c.cfg.GeneratedWarning())
c.BuildTag("stress")
c.NL()
c.Printf("package x86\n\n")
c.Printf("import (\n")
c.Printf("\t\"reflect\"\n")
c.Printf("\t\"testing\"\n")
c.NL()
c.Printf("\t%q\n", api.ImportPath(api.IRPackage))
c.Printf("\t%q\n", api.ImportPath(api.OperandPackage))
c.Printf("\t%q\n", api.ImportPath(api.RegisterPackage))
c.Printf(")\n\n")
fns := api.InstructionsFunctions(is)
for _, fn := range fns {
c.function(fn)
}
return c.Result()
}
func (c *ctorsstress) function(fn *api.Function) {
c.Printf("func Test%sValidFormsCorrectInstruction(t *testing.T) {", fn.Name())
for _, f := range fn.Forms {
name := strings.Join(f.Signature(), "_")
c.Printf("t.Run(\"form=%s\", func(t *testing.T) {\n", name)
s := TestSignature(f)
c.Printf("expect := &%s\n", construct(fn, f, s))
c.Printf("got, err := %s(%s);\n", fn.Name(), s.Arguments())
c.Printf("if err != nil { t.Fatal(err) }\n")
c.Printf("if !reflect.DeepEqual(got, expect) { t.Fatal(\"mismatch\") }\n")
c.Printf("})\n")
}
c.Printf("}\n\n")
}
type ctorsbench struct {
cfg printer.Config
prnt.Generator
}
// NewCtorsBench autogenerates a benchmark for the instruction constructors.
func NewCtorsBench(cfg printer.Config) Interface {
return GoFmt(&ctorsbench{cfg: cfg})
}
func (c *ctorsbench) Generate(is []inst.Instruction) ([]byte, error) {
c.Printf("// %s\n\n", c.cfg.GeneratedWarning())
c.BuildTag("stress")
c.NL()
c.Printf("package x86\n\n")
c.Printf("import (\n")
c.Printf("\t\"time\"\n")
c.Printf("\t\"testing\"\n")
c.Printf(")\n\n")
c.Printf("func BenchmarkConstructors(b *testing.B) {\n")
c.Printf("start := time.Now()\n")
c.Printf("for i := 0; i < b.N; i++ {\n")
n := 0
for _, fn := range api.InstructionsFunctions(is) {
for _, f := range fn.Forms {
n++
c.Printf("%s(%s)\n", fn.Name(), TestSignature(f).Arguments())
}
}
c.Printf("}\n")
c.Printf("elapsed := time.Since(start)\n")
c.Printf("\tb.ReportMetric(%d * float64(b.N) / elapsed.Seconds(), \"inst/s\")\n", n)
c.Printf("}\n\n")
return c.Result()
}
func construct(fn *api.Function, f inst.Form, s api.Signature) string {
buf := bytes.NewBuffer(nil)
fmt.Fprintf(buf, "ir.Instruction{\n")
fmt.Fprintf(buf, "\tOpcode: %#v,\n", fn.Instruction.Opcode)
if len(fn.Suffixes) > 0 {
fmt.Fprintf(buf, "\tSuffixes: %#v,\n", fn.Suffixes.Strings())
}
fmt.Fprintf(buf, "\tOperands: %s,\n", s.ParameterSlice())
// Inputs.
fmt.Fprintf(buf, "\tInputs: %s,\n", operandsWithAction(f, inst.R, s))
// Outputs.
fmt.Fprintf(buf, "\tOutputs: %s,\n", operandsWithAction(f, inst.W, s))
// ISAs.
if len(f.ISA) > 0 {
fmt.Fprintf(buf, "\tISA: %#v,\n", f.ISA)
}
// Branch variables.
if fn.Instruction.IsTerminal() {
fmt.Fprintf(buf, "\tIsTerminal: true,\n")
}
if fn.Instruction.IsBranch() {
fmt.Fprintf(buf, "\tIsBranch: true,\n")
fmt.Fprintf(buf, "\tIsConditional: %#v,\n", fn.Instruction.IsConditionalBranch())
}
// Cancelling inputs.
if f.CancellingInputs {
fmt.Fprintf(buf, "\tCancellingInputs: true,\n")
}
fmt.Fprintf(buf, "}")
return buf.String()
}
func operandsWithAction(f inst.Form, a inst.Action, s api.Signature) string {
var opexprs []string
for i, op := range f.Operands {
if op.Action.ContainsAny(a) {
opexprs = append(opexprs, s.ParameterName(i))
}
}
for _, op := range f.ImplicitOperands {
if op.Action.ContainsAny(a) {
opexprs = append(opexprs, api.ImplicitRegister(op.Register))
}
}
if len(opexprs) == 0 {
return "nil"
}
return fmt.Sprintf("[]%s{%s}", api.OperandType, strings.Join(opexprs, ", "))
}
|
