53 lines
1.5 KiB
Smali
53 lines
1.5 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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# Test case in which `inner_back_edge` is not dominated by `inner_header` and
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# causes `outer_back_edge` to not be dominated by `outer_header`. HGraphBuilder
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# not do a fix-point iteration and would miss the path to `outer_back_edge`
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# through `inner_back_edge` and incorrectly label the outer loop non-irreducible.
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## CHECK-START: int IrreducibleLoop.dominance(int) builder (after)
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## CHECK: Add irreducible:true
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.method public static dominance(I)I
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.registers 2
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if-eqz p0, :outer_header
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goto :inner_back_edge
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:outer_header
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if-eqz p0, :inner_header
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:outer_branch_exit
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if-eqz p0, :outer_merge
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return p0
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:inner_header
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goto :outer_merge
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:inner_back_edge
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goto :inner_header
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:outer_merge
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if-eqz p0, :inner_back_edge
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:outer_back_edge
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add-int/2addr p0, p0
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goto :outer_header
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.end method
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