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// Copyright 2018 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 asm
import (
"cmd/asm/internal/lex"
"strings"
"testing"
)
type badInstTest struct {
input, error string
}
func TestAMD64BadInstParser(t *testing.T) {
testBadInstParser(t, "amd64", []badInstTest{
// Test AVX512 suffixes.
{"VADDPD.A X0, X1, X2", `unknown suffix "A"`},
{"VADDPD.A.A X0, X1, X2", `unknown suffix "A"; duplicate suffix "A"`},
{"VADDPD.A.A.A X0, X1, X2", `unknown suffix "A"; duplicate suffix "A"`},
{"VADDPD.A.B X0, X1, X2", `unknown suffix "A"; unknown suffix "B"`},
{"VADDPD.Z.A X0, X1, X2", `Z suffix should be the last; unknown suffix "A"`},
{"VADDPD.Z.Z X0, X1, X2", `Z suffix should be the last; duplicate suffix "Z"`},
{"VADDPD.SAE.BCST X0, X1, X2", `can't combine rounding/SAE and broadcast`},
{"VADDPD.BCST.SAE X0, X1, X2", `can't combine rounding/SAE and broadcast`},
{"VADDPD.BCST.Z.SAE X0, X1, X2", `Z suffix should be the last; can't combine rounding/SAE and broadcast`},
{"VADDPD.SAE.SAE X0, X1, X2", `duplicate suffix "SAE"`},
{"VADDPD.RZ_SAE.SAE X0, X1, X2", `bad suffix combination`},
// BSWAP on 16-bit registers is undefined. See #29167,
{"BSWAPW DX", `unrecognized instruction`},
{"BSWAPW R11", `unrecognized instruction`},
})
}
func testBadInstParser(t *testing.T, goarch string, tests []badInstTest) {
for i, test := range tests {
arch, ctxt := setArch(goarch)
tokenizer := lex.NewTokenizer("", strings.NewReader(test.input+"\n"), nil)
parser := NewParser(ctxt, arch, tokenizer)
err := tryParse(t, func() {
parser.Parse()
})
switch {
case err == nil:
t.Errorf("#%d: %q: want error %q; have none", i, test.input, test.error)
case !strings.Contains(err.Error(), test.error):
t.Errorf("#%d: %q: want error %q; have %q", i, test.input, test.error, err)
}
}
}