102 lines
3.1 KiB
Smali
102 lines
3.1 KiB
Smali
# Copyright (C) 2016 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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.class public LIrreducibleLoop;
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.super Ljava/lang/Object;
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# Check that both the irreducible loop and the other loop entry
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# move the constant-folded value to where it's expected.
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## CHECK-START-X86: int IrreducibleLoop.test1(int, long) register (after)
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## CHECK-DAG: ParallelMove {{.*84->.*}} loop:none
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## CHECK-DAG: ParallelMove {{.*84->.*}} loop:{{B\d+}} irreducible:true
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.method public static test1(IJ)I
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.registers 10
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const/16 v6, 2
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const/16 v4, 1
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const-wide/16 v0, 42
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add-long v2, v0, v0
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if-eqz p0, :loop_entry
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goto :other_loop_pre_entry
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# The then part: beginning of the irreducible loop.
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:loop_entry
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if-eqz p0, :exit
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cmp-long v6, v2, p1
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:other_loop_entry
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sub-int p0, p0, v4
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goto :loop_entry
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# The other block branching to the irreducible loop.
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# In that block, v4 has no live range.
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:other_loop_pre_entry
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goto :other_loop_entry
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:exit
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return v6
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.end method
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# Check that the compiler does not crash when
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# a live interval is found while connecting siblings, but that
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# live interval is inactive at the desired position.
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## CHECK-START-X86: int IrreducibleLoop.test2(int, long) register (after)
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## CHECK-DAG: ParallelMove {{.*84->.*}} loop:none
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## CHECK-DAG: ParallelMove {{.*84->.*}} loop:{{B\d+}} irreducible:true
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.method public static test2(IJ)I
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.registers 14
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const/16 v6, 2
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const/16 v4, 1
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const-wide/16 v0, 42
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const-wide/16 v8, 68
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add-long v2, v0, v0
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if-eqz p0, :loop_entry
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goto :other_loop_pre_entry
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# The then part: beginning of the irreducible loop.
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:loop_entry
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if-eqz p0, :exit
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cmp-long v6, v2, p1
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:other_loop_entry
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sub-int p0, p0, v4
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goto :loop_entry
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# The other block branching to the irreducible loop.
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:other_loop_pre_entry
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# Make v2 have a register location.
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sput-wide v2, LIrreducibleLoop;->myField:J
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# Stress register allocator on x86 to split v2.
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sput-wide v0, LIrreducibleLoop;->myField:J
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sput-wide p1, LIrreducibleLoop;->myField:J
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sput-wide v8, LIrreducibleLoop;->myField:J
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if-eqz p0, :join
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# Stress register allocator on x86 to split v2.
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sput-wide p1, LIrreducibleLoop;->myField:J
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sput-wide v8, LIrreducibleLoop;->myField:J
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sput-wide v0, LIrreducibleLoop;->myField:J
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# Last use of v2 before the irreducible loop, that
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# will create an interval hole.
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sput-wide v2, LIrreducibleLoop;->myField:J
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:join
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goto :other_loop_entry
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:exit
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return v6
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.end method
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.field public static volatile myField:J
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