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-rw-r--r--tests/legacy/examples/lib/sub_arm64.s20
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diff --git a/tests/legacy/examples/lib/sub_arm64.s b/tests/legacy/examples/lib/sub_arm64.s
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+++ b/tests/legacy/examples/lib/sub_arm64.s
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+// Copyright 2021 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+TEXT ·sub(SB), $0
+ MOVD x+0(FP), R0
+ MOVD y+8(FP), R1
+ SUB R0, R1, R0
+ MOVD R0, ret+16(FP)
+ RET