LLVM  4.0.0
SystemZTargetTransformInfo.h
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1 //===-- SystemZTargetTransformInfo.h - SystemZ-specific TTI ---------------===//
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 
10 #ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZTARGETTRANSFORMINFO_H
11 #define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZTARGETTRANSFORMINFO_H
12 
13 #include "SystemZTargetMachine.h"
16 
17 namespace llvm {
18 
19 class SystemZTTIImpl : public BasicTTIImplBase<SystemZTTIImpl> {
21  typedef TargetTransformInfo TTI;
22  friend BaseT;
23 
24  const SystemZSubtarget *ST;
25  const SystemZTargetLowering *TLI;
26 
27  const SystemZSubtarget *getST() const { return ST; }
28  const SystemZTargetLowering *getTLI() const { return TLI; }
29 
30 public:
31  explicit SystemZTTIImpl(const SystemZTargetMachine *TM, const Function &F)
32  : BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl(F)),
33  TLI(ST->getTargetLowering()) {}
34 
35  /// \name Scalar TTI Implementations
36  /// @{
37 
38  int getIntImmCost(const APInt &Imm, Type *Ty);
39 
40  int getIntImmCost(unsigned Opcode, unsigned Idx, const APInt &Imm, Type *Ty);
41  int getIntImmCost(Intrinsic::ID IID, unsigned Idx, const APInt &Imm,
42  Type *Ty);
43 
44  TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth);
45 
46  void getUnrollingPreferences(Loop *L, TTI::UnrollingPreferences &UP);
47 
48  /// @}
49 
50  /// \name Vector TTI Implementations
51  /// @{
52 
53  unsigned getNumberOfRegisters(bool Vector);
54  unsigned getRegisterBitWidth(bool Vector);
55 
56  /// @}
57 };
58 
59 } // end namespace llvm
60 
61 #endif
MachineLoop * L
SystemZTTIImpl(const SystemZTargetMachine *TM, const Function &F)
Base class which can be used to help build a TTI implementation.
Definition: BasicTTIImpl.h:40
TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth)
#define F(x, y, z)
Definition: MD5.cpp:51
unsigned getNumberOfRegisters(bool Vector)
PopcntSupportKind
Flags indicating the kind of support for population count.
void getUnrollingPreferences(Loop *L, TTI::UnrollingPreferences &UP)
The instances of the Type class are immutable: once they are created, they are never changed...
Definition: Type.h:45
This file provides a helper that implements much of the TTI interface in terms of the target-independ...
This pass provides access to the codegen interfaces that are needed for IR-level transformations.
unsigned getRegisterBitWidth(bool Vector)
int getIntImmCost(const APInt &Imm, Type *Ty)
Class for arbitrary precision integers.
Definition: APInt.h:77
const DataLayout & getDataLayout() const
Represents a single loop in the control flow graph.
Definition: LoopInfo.h:368
static const Function * getParent(const Value *V)
This pass exposes codegen information to IR-level passes.