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(Val: 0),
29 cl::desc("Threshold for partial unrolling"),
30 cl::Hidden);
31
32BasicTTIImpl::BasicTTIImpl(const TargetMachine *TM, const Function &F)
33 : BaseT(TM, F.getDataLayout()), ST(TM->getSubtargetImpl(F)),
34 TLI(ST->getTargetLowering()) {}
35