1# Copyright (C) 2016 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## CHECK-START-X86: int IrreducibleLoop.simpleLoop1(int) dead_code_elimination (before) 20## CHECK-DAG: <<Method:(i|j)\d+>> CurrentMethod 21## CHECK-DAG: <<Constant:i\d+>> IntConstant 42 22## CHECK-DAG: Goto irreducible:true 23## CHECK-DAG: InvokeStaticOrDirect [<<Constant>>,<<Method>>] loop:none 24## CHECK-DAG: InvokeStaticOrDirect [{{i\d+}},<<Method>>] loop:none 25.method public static simpleLoop1(I)I 26 .registers 3 27 const/16 v0, 42 28 invoke-static {v0}, LIrreducibleLoop;->$noinline$m(I)V 29 if-eqz p0, :b22 30 goto :b34 31 32 :b34 33 goto :b20 34 35 :b20 36 if-nez p0, :b45 37 goto :b46 38 39 :b46 40 goto :b21 41 42 :b21 43 goto :b34 44 45 :b22 46 :try_start 47 div-int v0, v0, v0 48 :try_end 49 .catchall {:try_start .. :try_end} :b34 50 goto :b20 51 52 :b45 53 invoke-static {v0}, LIrreducibleLoop;->$noinline$m(I)V 54 goto :b26 55 56 :b26 57 return v0 58.end method 59 60## CHECK-START-X86: int IrreducibleLoop.simpleLoop2(int) dead_code_elimination (before) 61## CHECK-DAG: <<Method:(i|j)\d+>> CurrentMethod 62## CHECK-DAG: <<Constant:i\d+>> IntConstant 42 63## CHECK-DAG: Goto irreducible:true 64## CHECK-DAG: InvokeStaticOrDirect [<<Constant>>,<<Method>>] loop:none 65## CHECK-DAG: InvokeStaticOrDirect [{{i\d+}},<<Method>>] loop:none 66.method public static simpleLoop2(I)I 67 .registers 3 68 const/16 v0, 42 69 70 :try_start1 71 invoke-static {v0}, LIrreducibleLoop;->$noinline$m(I)V 72 div-int v0, v0, v0 73 :try_end1 74 .catchall {:try_start1 .. :try_end1} :b14 75 76 :try_start2 77 invoke-static {v0}, LIrreducibleLoop;->$noinline$m(I)V 78 div-int v0, v0, v0 79 :try_end2 80 .catchall {:try_start2 .. :try_end2} :b45 81 goto :b49 82 83 :b14 84 goto :b15 85 86 :b45 87 goto :b15 88 89 :b15 90 goto :b16 91 92 :b16 93 goto :b49 94 95 :b49 96 invoke-static {v0}, LIrreducibleLoop;->$noinline$m(I)V 97 div-int v0, v0, v0 98 :try_end3 99 .catchall {:b49 .. :try_end3} :b49 100 if-eqz p0, :b16 101 goto :b26 102 103 :b26 104 return v0 105.end method 106 107.method public static $noinline$m(I)V 108 .registers 3 109 const/16 v0, 0 110 sget-boolean v1,LIrreducibleLoop;->doThrow:Z 111 if-eqz v1, :exit 112 # Prevent inlining. 113 throw v0 114 :exit 115 return-void 116.end method 117 118.field public static doThrow:Z 119