Improved SSA and added unused value checks

src/ssa/ssa_test.go

@@ -4,23 +4,19 @@ import (
 	"testing"
 
 	"git.urbach.dev/cli/q/src/ssa"
+	"git.urbach.dev/cli/q/src/token"
 	"git.urbach.dev/go/assert"
 )
 
 func TestFunction(t *testing.T) {
-	fn := ssa.Function{}
+	fn := ssa.IR{}
 	a := fn.AppendInt(1)
 	b := fn.AppendInt(2)
-	c := fn.Append(ssa.Value{Type: ssa.Add, Args: []*ssa.Value{a, b}})
+	c := fn.Append(&ssa.BinaryOperation{Op: token.Add, Left: a, Right: b})
 	fn.AddBlock()
 	d := fn.AppendInt(3)
 	e := fn.AppendInt(4)
-	f := fn.Append(ssa.Value{Type: ssa.Add, Args: []*ssa.Value{d, e}})
+	f := fn.Append(&ssa.BinaryOperation{Op: token.Add, Left: d, Right: e})
 	assert.Equal(t, c.String(), "1 + 2")
 	assert.Equal(t, f.String(), "3 + 4")
-}
-
-func TestInvalidInstruction(t *testing.T) {
-	instr := ssa.Value{}
-	assert.Equal(t, instr.String(), "")
 }