1# Copyright (C) 2022 The Android Open Source Project
2#
3# Licensed under the Apache License, Version 2.0 (the "License");
4# you may not use this file except in compliance with the License.
5# You may obtain a copy of the License at
6#
7#      http://www.apache.org/licenses/LICENSE-2.0
8#
9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS,
11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12# See the License for the specific language governing permissions and
13# limitations under the License.
14
15.class public LIrreducibleLoop;
16
17.super Ljava/lang/Object;
18
19# Back-edges in the ascii-art graphs are represented with dash '-'.
20#
21# Check that testDoNotInlineInner has a simple irreducible loop
22#
23#        entry
24#       /    \
25#      /      \
26# loop_entry   \
27#    /    \-    \
28# try_start\-    \
29#           other_loop_entry
30#
31# Consistency check: we didn't optimize away the irreducible loop
32## CHECK-START: java.lang.Object IrreducibleLoop.testDoNotInlineInner(java.lang.Object) register (after)
33## CHECK: irreducible:true
34#
35# We shouldn't inline `inner`.
36## CHECK-START: java.lang.Object IrreducibleLoop.testDoNotInlineInner(java.lang.Object) inliner (before)
37## CHECK: InvokeStaticOrDirect method_name:Main.inner
38#
39## CHECK-START: java.lang.Object IrreducibleLoop.testDoNotInlineInner(java.lang.Object) inliner (after)
40## CHECK: InvokeStaticOrDirect method_name:Main.inner
41.method public static testDoNotInlineInner(Ljava/lang/Object;)Ljava/lang/Object;
42  .registers 3
43  const/16 v0, 42
44  const/16 v1, 21
45  # Irreducible loop
46  if-eq v1, v0, :other_loop_entry
47  :loop_entry
48  if-ne v1, v0, :continue
49  add-int v0, v0, v0
50  :other_loop_entry
51  add-int v0, v0, v0
52  goto :loop_entry
53
54  :continue
55  invoke-static {p0}, LMain;->inner(Ljava/lang/Object;)Ljava/lang/Object;
56  move-result-object v0
57  return-object v0
58.end method
59