36e79ecaec
Add an empty DeLICM pass, without any functional parts. Extracting the boilerplate from the the functional part reduces the size of the code to review (https://reviews.llvm.org/D24716) Suggested-by: Tobias Grosser <tobias@grosser.es> llvm-svn: 288160
71 lines
2.0 KiB
C++
71 lines
2.0 KiB
C++
//===------ DeLICM.cpp -----------------------------------------*- 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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// Undo the effect of Loop Invariant Code Motion (LICM) and
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// GVN Partial Redundancy Elimination (PRE) on SCoP-level.
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//
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// Namely, remove register/scalar dependencies by mapping them back to array
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// elements.
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//
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//===----------------------------------------------------------------------===//
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#include "polly/DeLICM.h"
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#include "polly/ScopInfo.h"
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#include "polly/ScopPass.h"
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#define DEBUG_TYPE "polly-delicm"
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using namespace polly;
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using namespace llvm;
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namespace {
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class DeLICM : public ScopPass {
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private:
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DeLICM(const DeLICM &) = delete;
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const DeLICM &operator=(const DeLICM &) = delete;
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public:
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static char ID;
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explicit DeLICM() : ScopPass(ID) {}
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virtual void getAnalysisUsage(AnalysisUsage &AU) const override {
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AU.addRequiredTransitive<ScopInfoRegionPass>();
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AU.setPreservesAll();
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}
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virtual bool runOnScop(Scop &S) override {
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// Free resources for previous scop's computation, if not yet done.
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releaseMemory();
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// TODO: Run DeLICM algorithm
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return false;
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}
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virtual void printScop(raw_ostream &OS, Scop &S) const override {
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OS << "DeLICM result:\n";
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// TODO: Print analysis results and performed transformation details
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}
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virtual void releaseMemory() override {
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// TODO: Release resources (eg. shared_ptr to isl_ctx)
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}
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};
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char DeLICM::ID;
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} // anonymous namespace
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Pass *polly::createDeLICMPass() { return new DeLICM(); }
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INITIALIZE_PASS_BEGIN(DeLICM, "polly-delicm", "Polly - DeLICM/DePRE", false,
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false)
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INITIALIZE_PASS_DEPENDENCY(ScopInfoWrapperPass)
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INITIALIZE_PASS_END(DeLICM, "polly-delicm", "Polly - DeLICM/DePRE", false,
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false)
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