78 lines
2.3 KiB
C
78 lines
2.3 KiB
C
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//===- SimplifyCFGOptions.h - Control structure for SimplifyCFG -*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// A set of parameters used to control the transforms in the SimplifyCFG pass.
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// Options may change depending on the position in the optimization pipeline.
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// For example, canonical form that includes switches and branches may later be
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// replaced by lookup tables and selects.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_UTILS_SIMPLIFYCFGOPTIONS_H
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#define LLVM_TRANSFORMS_UTILS_SIMPLIFYCFGOPTIONS_H
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namespace llvm {
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class AssumptionCache;
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struct SimplifyCFGOptions {
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int BonusInstThreshold = 1;
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bool ForwardSwitchCondToPhi = false;
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bool ConvertSwitchToLookupTable = false;
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bool NeedCanonicalLoop = true;
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bool HoistCommonInsts = false;
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bool SinkCommonInsts = false;
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bool SimplifyCondBranch = true;
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bool FoldTwoEntryPHINode = true;
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AssumptionCache *AC = nullptr;
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// Support 'builder' pattern to set members by name at construction time.
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SimplifyCFGOptions &bonusInstThreshold(int I) {
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BonusInstThreshold = I;
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return *this;
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}
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SimplifyCFGOptions &forwardSwitchCondToPhi(bool B) {
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ForwardSwitchCondToPhi = B;
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return *this;
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}
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SimplifyCFGOptions &convertSwitchToLookupTable(bool B) {
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ConvertSwitchToLookupTable = B;
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return *this;
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}
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SimplifyCFGOptions &needCanonicalLoops(bool B) {
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NeedCanonicalLoop = B;
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return *this;
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}
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SimplifyCFGOptions &hoistCommonInsts(bool B) {
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HoistCommonInsts = B;
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return *this;
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}
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SimplifyCFGOptions &sinkCommonInsts(bool B) {
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SinkCommonInsts = B;
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return *this;
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}
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SimplifyCFGOptions &setAssumptionCache(AssumptionCache *Cache) {
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AC = Cache;
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return *this;
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}
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SimplifyCFGOptions &setSimplifyCondBranch(bool B) {
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SimplifyCondBranch = B;
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return *this;
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}
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SimplifyCFGOptions &setFoldTwoEntryPHINode(bool B) {
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FoldTwoEntryPHINode = B;
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return *this;
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}
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};
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} // namespace llvm
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#endif // LLVM_TRANSFORMS_UTILS_SIMPLIFYCFGOPTIONS_H
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