lib/Target/XCore/XCoreTargetTransformInfo.h

   1 //===-- XCoreTargetTransformInfo.h - XCore specific TTI ---------*- C++ -*-===//
   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 a TargetTransformInfo::Concept conforming object specific to the
  10 /// XCore target machine. It uses the target's detailed information to
  11 /// provide more precise answers to certain TTI queries, while letting the
  12 /// target independent and default TTI implementations handle the rest.
  13 ///
  14 //===----------------------------------------------------------------------===//
  15
  16 #ifndef LLVM_LIB_TARGET_XCORE_XCORETARGETTRANSFORMINFO_H
  17 #define LLVM_LIB_TARGET_XCORE_XCORETARGETTRANSFORMINFO_H
  18
  19 #include "XCore.h"
  20 #include "XCoreTargetMachine.h"
  21 #include "llvm/Analysis/TargetTransformInfo.h"
  22 #include "llvm/CodeGen/BasicTTIImpl.h"
  23 #include "llvm/CodeGen/TargetLowering.h"
  24
  25 namespace llvm {
  26
  27 class XCoreTTIImpl : public BasicTTIImplBase<XCoreTTIImpl> {
  28   typedef BasicTTIImplBase<XCoreTTIImpl> BaseT;
  29   typedef TargetTransformInfo TTI;
  30   friend BaseT;
  31
  32   const XCoreSubtarget *ST;
  33   const XCoreTargetLowering *TLI;
  34
  35   const XCoreSubtarget *getST() const { return ST; }
  36   const XCoreTargetLowering *getTLI() const { return TLI; }
  37
  38 public:
  39   explicit XCoreTTIImpl(const XCoreTargetMachine *TM, const Function &F)
  40       : BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl()),
  41         TLI(ST->getTargetLowering()) {}
  42
  43   unsigned getNumberOfRegisters(unsigned ClassID) const {
  44     bool Vector = (ClassID == 1);
  45     if (Vector) {
  46       return 0;
  47     }
  48     return 12;
  49   }
  50 };
  51
  52 } // end namespace llvm
  53
  54 #endif