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