1 //===- BasicTargetTransformInfo.cpp - Basic target-independent TTI impl ---===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 /// \file 10 /// This file provides the implementation of a basic TargetTransformInfo pass 11 /// predicated on the target abstractions present in the target independent 12 /// code generator. It uses these (primarily TargetLowering) to model as much 13 /// of the TTI query interface as possible. It is included by most targets so 14 /// that they can specialize only a small subset of the query space. 15 /// 16 //===----------------------------------------------------------------------===// 17 18 #include "llvm/CodeGen/BasicTTIImpl.h" 19 #include "llvm/Analysis/LoopInfo.h" 20 #include "llvm/Analysis/TargetTransformInfo.h" 21 #include "llvm/Analysis/TargetTransformInfoImpl.h" 22 #include "llvm/CodeGen/Passes.h" 23 #include "llvm/Support/CommandLine.h" 24 #include <utility> 25 using namespace llvm; 26 27 #define DEBUG_TYPE "basictti" 28 29 // This flag is used by the template base class for BasicTTIImpl, and here to 30 // provide a definition. 31 cl::opt<unsigned> 32 llvm::PartialUnrollingThreshold("partial-unrolling-threshold", cl::init(0), 33 cl::desc("Threshold for partial unrolling"), 34 cl::Hidden); 35 36 BasicTTIImpl::BasicTTIImpl(const TargetMachine *TM, const Function &F) 37 : BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl(F)), 38 TLI(ST->getTargetLowering()) {} 39
