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1369b53da1
Summary: Unroll factor (Count) calculations moved to a new function. Early exits on pragma and "-unroll-count" defined factor added. New type of unrolling "Force" introduced (previously used implicitly). New unroll preference "AllowRemainder" introduced and set "true" by default. (should be set to false for architectures that suffers from it). Reviewers: hfinkel, mzolotukhin, zzheng Differential Revision: http://reviews.llvm.org/D19553 From: Evgeny Stupachenko <evstupac@gmail.com> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271071 91177308-0d34-0410-b5e6-96231b3b80d8
47 lines
1.5 KiB
C++
47 lines
1.5 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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namespace llvm {
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class StringRef;
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class AssumptionCache;
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class DominatorTree;
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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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class ScalarEvolution;
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bool UnrollLoop(Loop *L, unsigned Count, unsigned TripCount, bool Force,
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bool AllowRuntime, bool AllowExpensiveTripCount,
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unsigned TripMultiple, LoopInfo *LI, ScalarEvolution *SE,
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DominatorTree *DT, AssumptionCache *AC, bool PreserveLCSSA);
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bool UnrollRuntimeLoopRemainder(Loop *L, unsigned Count,
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bool AllowExpensiveTripCount,
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bool UseEpilogRemainder, LoopInfo *LI,
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ScalarEvolution *SE, DominatorTree *DT,
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bool PreserveLCSSA);
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MDNode *GetUnrollMetadata(MDNode *LoopID, StringRef Name);
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}
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#endif
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