| 1 | //===- BasicTargetTransformInfo.cpp - Basic target-independent TTI impl ---===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | /// \file |
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| 9 | /// This file provides the implementation of a basic TargetTransformInfo pass |
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| 10 | /// predicated on the target abstractions present in the target independent |
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| 11 | /// code generator. It uses these (primarily TargetLowering) to model as much |
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| 12 | /// of the TTI query interface as possible. It is included by most targets so |
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| 13 | /// that they can specialize only a small subset of the query space. |
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| 14 | /// |
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| 15 | //===----------------------------------------------------------------------===// |
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| 16 | |
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| 17 | #include "llvm/CodeGen/BasicTTIImpl.h" |
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| 18 | #include "llvm/CodeGen/TargetSubtargetInfo.h" |
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| 19 | #include "llvm/IR/Function.h" |
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| 20 | #include "llvm/Support/CommandLine.h" |
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| 21 | #include "llvm/Target/TargetMachine.h" |
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| 22 | |
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| 23 | using namespace llvm; |
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| 24 | |
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| 25 | // This flag is used by the template base class for BasicTTIImpl, and here to |
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| 26 | // provide a definition. |
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| 27 | cl::opt<unsigned> |
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| 28 | llvm::PartialUnrollingThreshold("partial-unrolling-threshold" , cl::init(Val: 0), |
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| 29 | cl::desc("Threshold for partial unrolling" ), |
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| 30 | cl::Hidden); |
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| 31 | |
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| 32 | BasicTTIImpl::BasicTTIImpl(const TargetMachine *TM, const Function &F) |
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| 33 | : BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl(F)), |
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| 34 | TLI(ST->getTargetLowering()) {} |
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| 35 | |
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