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//go:build ignore
// +build ignore
package main
import (
"flag"
"fmt"
"go/token"
"go/types"
"math/rand"
. "github.com/mmcloughlin/avo/build"
. "github.com/mmcloughlin/avo/gotypes"
. "github.com/mmcloughlin/avo/reg"
)
var (
seed = flag.Int64("seed", 0, "random seed")
num = flag.Int("num", 32, "number of test functions to generate")
)
func main() {
flag.Parse()
rand.Seed(*seed)
for i := 0; i < *num; i++ {
name := fmt.Sprintf("Signature%d", i)
sig := RandomSignature()
SignatureFunction(name, sig)
}
Generate()
}
func SignatureFunction(name string, sig *types.Signature) {
// Declare the function.
TEXT(name, 0, sig.String())
// Write to the results. Otherwise, asmdecl would warn us.
regsize := map[int64]Virtual{1: GP8(), 2: GP16(), 4: GP32(), 8: GP64()}
rs := sig.Results()
for i := 0; i < rs.Len(); i++ {
r := rs.At(i)
size := Sizes.Sizeof(r.Type())
Store(regsize[size], ReturnIndex(i))
}
RET()
}
func RandomSignature() *types.Signature {
p := RandomTuple()
r := RandomTuple()
return types.NewSignature(nil, p, r, false)
}
func RandomTuple() *types.Tuple {
n := rand.Intn(5)
vs := make([]*types.Var, n)
for i := 0; i < n; i++ {
t := RandomType()
vs[i] = types.NewVar(token.NoPos, nil, "", t)
}
return types.NewTuple(vs...)
}
func RandomType() types.Type {
accept := types.IsInteger | types.IsUnsigned
for {
t := types.Typ[rand.Intn(len(types.Typ))]
info := t.Info()
if info != 0 && (info&^accept) == 0 {
return t
}
}
}
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