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75 lines
2.4 KiB
C++
75 lines
2.4 KiB
C++
//===-- VPlanPredicator.h ---------------------------------------*- 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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/// \file
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/// This file defines the VPlanPredicator class which contains the public
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/// interfaces to predicate and linearize the VPlan region.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_VECTORIZE_VPLAN_PREDICATOR_H
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#define LLVM_TRANSFORMS_VECTORIZE_VPLAN_PREDICATOR_H
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#include "LoopVectorizationPlanner.h"
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#include "VPlan.h"
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#include "VPlanDominatorTree.h"
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namespace llvm {
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class VPlanPredicator {
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private:
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enum class EdgeType {
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TRUE_EDGE,
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FALSE_EDGE,
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};
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// VPlan being predicated.
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VPlan &Plan;
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// VPLoopInfo for Plan's HCFG.
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VPLoopInfo *VPLI;
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// Dominator tree for Plan's HCFG.
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VPDominatorTree VPDomTree;
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// VPlan builder used to generate VPInstructions for block predicates.
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VPBuilder Builder;
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/// Get the type of edge from \p FromBlock to \p ToBlock. Returns TRUE_EDGE if
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/// \p ToBlock is either the unconditional successor or the conditional true
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/// successor of \p FromBlock and FALSE_EDGE otherwise.
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EdgeType getEdgeTypeBetween(VPBlockBase *FromBlock, VPBlockBase *ToBlock);
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/// Create and return VPValue corresponding to the predicate for the edge from
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/// \p PredBB to \p CurrentBlock.
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VPValue *getOrCreateNotPredicate(VPBasicBlock *PredBB, VPBasicBlock *CurrBB);
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/// Generate and return the result of ORing all the predicate VPValues in \p
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/// Worklist.
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VPValue *genPredicateTree(std::list<VPValue *> &Worklist);
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/// Create or propagate predicate for \p CurrBlock in region \p Region using
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/// predicate(s) of its predecessor(s)
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void createOrPropagatePredicates(VPBlockBase *CurrBlock,
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VPRegionBlock *Region);
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/// Predicate the CFG within \p Region.
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void predicateRegionRec(VPRegionBlock *Region);
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/// Linearize the CFG within \p Region.
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void linearizeRegionRec(VPRegionBlock *Region);
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public:
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VPlanPredicator(VPlan &Plan);
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/// Predicate Plan's HCFG.
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void predicate(void);
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};
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} // end namespace llvm
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#endif // LLVM_TRANSFORMS_VECTORIZE_VPLAN_PREDICATOR_H
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