Line data    Source code

       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/CodeGen/TargetSubtargetInfo.h"
      20             : #include "llvm/IR/Function.h"
      21             : #include "llvm/Support/CommandLine.h"
      22             : #include "llvm/Target/TargetMachine.h"
      23             : 
      24             : using namespace llvm;
      25             : 
      26             : // This flag is used by the template base class for BasicTTIImpl, and here to
      27             : // provide a definition.
      28             : cl::opt<unsigned>
      29             : llvm::PartialUnrollingThreshold("partial-unrolling-threshold", cl::init(0),
      30             :                                 cl::desc("Threshold for partial unrolling"),
      31             :                                 cl::Hidden);
      32             : 
      33       94827 : BasicTTIImpl::BasicTTIImpl(const TargetMachine *TM, const Function &F)
      34       94827 :     : BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl(F)),
      35      189654 :       TLI(ST->getTargetLowering()) {}