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b9907c45f6
Summary: Runtime unrolling of loops needs to emit an expression to compute the loop's runtime trip-count. Avoid runtime unrolling if this computation will be expensive. Depends on D8993. Reviewers: atrick Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D8994 llvm-svn: 234846
43 lines
1.3 KiB
C++
43 lines
1.3 KiB
C++
//===- llvm/Transforms/Utils/UnrollLoop.h - Unrolling utilities -*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines some loop unrolling utilities. It does not define any
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// actual pass or policy, but provides a single function to perform loop
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// unrolling.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_UTILS_UNROLLLOOP_H
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#define LLVM_TRANSFORMS_UTILS_UNROLLLOOP_H
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#include "llvm/ADT/StringRef.h"
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namespace llvm {
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class AssumptionCache;
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class Loop;
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class LoopInfo;
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class LPPassManager;
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class MDNode;
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class Pass;
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bool UnrollLoop(Loop *L, unsigned Count, unsigned TripCount, bool AllowRuntime,
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bool AllowExpensiveTripCount, unsigned TripMultiple,
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LoopInfo *LI, Pass *PP, LPPassManager *LPM,
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AssumptionCache *AC);
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bool UnrollRuntimeLoopProlog(Loop *L, unsigned Count,
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bool AllowExpensiveTripCount, LoopInfo *LI,
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LPPassManager *LPM);
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MDNode *GetUnrollMetadata(MDNode *LoopID, StringRef Name);
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}
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#endif
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