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| Rev | Author | Line No. | Line |
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| 14 | pmbaty | 1 | //===- SimplifyCFGOptions.h - Control structure for SimplifyCFG -*- C++ -*-===// |
| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // A set of parameters used to control the transforms in the SimplifyCFG pass. |
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| 10 | // Options may change depending on the position in the optimization pipeline. |
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| 11 | // For example, canonical form that includes switches and branches may later be |
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| 12 | // replaced by lookup tables and selects. |
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| 13 | // |
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| 14 | //===----------------------------------------------------------------------===// |
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| 15 | |||
| 16 | #ifndef LLVM_TRANSFORMS_UTILS_SIMPLIFYCFGOPTIONS_H |
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| 17 | #define LLVM_TRANSFORMS_UTILS_SIMPLIFYCFGOPTIONS_H |
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| 18 | |||
| 19 | namespace llvm { |
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| 20 | |||
| 21 | class AssumptionCache; |
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| 22 | |||
| 23 | struct SimplifyCFGOptions { |
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| 24 | int BonusInstThreshold = 1; |
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| 25 | bool ForwardSwitchCondToPhi = false; |
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| 26 | bool ConvertSwitchRangeToICmp = false; |
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| 27 | bool ConvertSwitchToLookupTable = false; |
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| 28 | bool NeedCanonicalLoop = true; |
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| 29 | bool HoistCommonInsts = false; |
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| 30 | bool SinkCommonInsts = false; |
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| 31 | bool SimplifyCondBranch = true; |
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| 32 | bool FoldTwoEntryPHINode = true; |
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| 33 | |||
| 34 | AssumptionCache *AC = nullptr; |
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| 35 | |||
| 36 | // Support 'builder' pattern to set members by name at construction time. |
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| 37 | SimplifyCFGOptions &bonusInstThreshold(int I) { |
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| 38 | BonusInstThreshold = I; |
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| 39 | return *this; |
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| 40 | } |
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| 41 | SimplifyCFGOptions &forwardSwitchCondToPhi(bool B) { |
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| 42 | ForwardSwitchCondToPhi = B; |
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| 43 | return *this; |
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| 44 | } |
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| 45 | SimplifyCFGOptions &convertSwitchRangeToICmp(bool B) { |
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| 46 | ConvertSwitchRangeToICmp = B; |
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| 47 | return *this; |
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| 48 | } |
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| 49 | SimplifyCFGOptions &convertSwitchToLookupTable(bool B) { |
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| 50 | ConvertSwitchToLookupTable = B; |
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| 51 | return *this; |
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| 52 | } |
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| 53 | SimplifyCFGOptions &needCanonicalLoops(bool B) { |
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| 54 | NeedCanonicalLoop = B; |
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| 55 | return *this; |
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| 56 | } |
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| 57 | SimplifyCFGOptions &hoistCommonInsts(bool B) { |
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| 58 | HoistCommonInsts = B; |
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| 59 | return *this; |
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| 60 | } |
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| 61 | SimplifyCFGOptions &sinkCommonInsts(bool B) { |
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| 62 | SinkCommonInsts = B; |
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| 63 | return *this; |
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| 64 | } |
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| 65 | SimplifyCFGOptions &setAssumptionCache(AssumptionCache *Cache) { |
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| 66 | AC = Cache; |
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| 67 | return *this; |
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| 68 | } |
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| 69 | SimplifyCFGOptions &setSimplifyCondBranch(bool B) { |
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| 70 | SimplifyCondBranch = B; |
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| 71 | return *this; |
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| 72 | } |
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| 73 | |||
| 74 | SimplifyCFGOptions &setFoldTwoEntryPHINode(bool B) { |
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| 75 | FoldTwoEntryPHINode = B; |
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| 76 | return *this; |
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| 77 | } |
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| 78 | }; |
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| 79 | |||
| 80 | } // namespace llvm |
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| 81 | |||
| 82 | #endif // LLVM_TRANSFORMS_UTILS_SIMPLIFYCFGOPTIONS_H |