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fad0c9b3b0
Also, get rid of a redundant include in FetchStage.h and FetchStage.cpp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@332468 91177308-0d34-0410-b5e6-96231b3b80d8
44 lines
1.4 KiB
C++
44 lines
1.4 KiB
C++
//===---------------------- FetchStage.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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/// \file
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///
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/// This file defines the Fetch stage of an instruction pipeline. Its sole
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/// purpose in life is to produce instructions for the rest of the pipeline.
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///
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//===----------------------------------------------------------------------===//
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#include "FetchStage.h"
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namespace mca {
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bool FetchStage::isReady() const { return SM.hasNext(); }
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bool FetchStage::execute(InstRef &IR) {
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if (!SM.hasNext())
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return false;
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const SourceRef SR = SM.peekNext();
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std::unique_ptr<Instruction> I = IB.createInstruction(*SR.second);
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IR = InstRef(SR.first, I.get());
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Instructions[IR.getSourceIndex()] = std::move(I);
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return true;
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}
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void FetchStage::postExecute(const InstRef &IR) {
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// Find the first instruction which hasn't been retired.
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const InstMap::iterator It =
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llvm::find_if(Instructions, [](const InstMap::value_type &KeyValuePair) {
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return !KeyValuePair.second->isRetired();
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});
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if (It != Instructions.begin())
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Instructions.erase(Instructions.begin(), It);
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SM.updateNext();
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}
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} // namespace mca
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