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Diffstat (limited to 'contrib/llvm/include/llvm/TargetTransformInfo.h')
| -rw-r--r-- | contrib/llvm/include/llvm/TargetTransformInfo.h | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/contrib/llvm/include/llvm/TargetTransformInfo.h b/contrib/llvm/include/llvm/TargetTransformInfo.h deleted file mode 100644 index 94db490..0000000 --- a/contrib/llvm/include/llvm/TargetTransformInfo.h +++ /dev/null @@ -1,204 +0,0 @@ -//===- llvm/Transforms/TargetTransformInfo.h --------------------*- C++ -*-===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This pass exposes codegen information to IR-level passes. Every -// transformation that uses codegen information is broken into three parts: -// 1. The IR-level analysis pass. -// 2. The IR-level transformation interface which provides the needed -// information. -// 3. Codegen-level implementation which uses target-specific hooks. -// -// This file defines #2, which is the interface that IR-level transformations -// use for querying the codegen. -// -//===----------------------------------------------------------------------===// - -#ifndef LLVM_TRANSFORMS_TARGET_TRANSFORM_INTERFACE -#define LLVM_TRANSFORMS_TARGET_TRANSFORM_INTERFACE - -#include "llvm/Pass.h" -#include "llvm/AddressingMode.h" -#include "llvm/Support/DataTypes.h" -#include "llvm/Type.h" - -namespace llvm { - -class ScalarTargetTransformInfo; -class VectorTargetTransformInfo; - -/// TargetTransformInfo - This pass provides access to the codegen -/// interfaces that are needed for IR-level transformations. -class TargetTransformInfo : public ImmutablePass { -private: - const ScalarTargetTransformInfo *STTI; - const VectorTargetTransformInfo *VTTI; -public: - /// Default ctor. - /// - /// @note This has to exist, because this is a pass, but it should never be - /// used. - TargetTransformInfo(); - - TargetTransformInfo(const ScalarTargetTransformInfo* S, - const VectorTargetTransformInfo *V) - : ImmutablePass(ID), STTI(S), VTTI(V) { - initializeTargetTransformInfoPass(*PassRegistry::getPassRegistry()); - } - - TargetTransformInfo(const TargetTransformInfo &T) : - ImmutablePass(ID), STTI(T.STTI), VTTI(T.VTTI) { } - - const ScalarTargetTransformInfo* getScalarTargetTransformInfo() const { - return STTI; - } - const VectorTargetTransformInfo* getVectorTargetTransformInfo() const { - return VTTI; - } - - /// Pass identification, replacement for typeid. - static char ID; -}; - -// ---------------------------------------------------------------------------// -// The classes below are inherited and implemented by target-specific classes -// in the codegen. -// ---------------------------------------------------------------------------// - -/// ScalarTargetTransformInfo - This interface is used by IR-level passes -/// that need target-dependent information for generic scalar transformations. -/// LSR, and LowerInvoke use this interface. -class ScalarTargetTransformInfo { -public: - virtual ~ScalarTargetTransformInfo() {} - - /// isLegalAddImmediate - Return true if the specified immediate is legal - /// add immediate, that is the target has add instructions which can add - /// a register with the immediate without having to materialize the - /// immediate into a register. - virtual bool isLegalAddImmediate(int64_t) const { - return false; - } - /// isLegalICmpImmediate - Return true if the specified immediate is legal - /// icmp immediate, that is the target has icmp instructions which can compare - /// a register against the immediate without having to materialize the - /// immediate into a register. - virtual bool isLegalICmpImmediate(int64_t) const { - return false; - } - /// isLegalAddressingMode - Return true if the addressing mode represented by - /// AM is legal for this target, for a load/store of the specified type. - /// The type may be VoidTy, in which case only return true if the addressing - /// mode is legal for a load/store of any legal type. - /// TODO: Handle pre/postinc as well. - virtual bool isLegalAddressingMode(const AddrMode &AM, Type *Ty) const { - return false; - } - /// isTruncateFree - Return true if it's free to truncate a value of - /// type Ty1 to type Ty2. e.g. On x86 it's free to truncate a i32 value in - /// register EAX to i16 by referencing its sub-register AX. - virtual bool isTruncateFree(Type *Ty1, Type *Ty2) const { - return false; - } - /// Is this type legal. - virtual bool isTypeLegal(Type *Ty) const { - return false; - } - /// getJumpBufAlignment - returns the target's jmp_buf alignment in bytes - virtual unsigned getJumpBufAlignment() const { - return 0; - } - /// getJumpBufSize - returns the target's jmp_buf size in bytes. - virtual unsigned getJumpBufSize() const { - return 0; - } - /// shouldBuildLookupTables - Return true if switches should be turned into - /// lookup tables for the target. - virtual bool shouldBuildLookupTables() const { - return true; - } -}; - -/// VectorTargetTransformInfo - This interface is used by the vectorizers -/// to estimate the profitability of vectorization for different instructions. -class VectorTargetTransformInfo { -public: - virtual ~VectorTargetTransformInfo() {} - - /// Returns the expected cost of the instruction opcode. The opcode is one of - /// the enums like Instruction::Add. The type arguments are the type of the - /// operation. - /// Most instructions only use the first type and in that case the second - /// operand is ignored. - /// - /// Exceptions: - /// * Br instructions do not use any of the types. - /// * Select instructions pass the return type as Ty1 and the selector as Ty2. - /// * Cast instructions pass the destination as Ty1 and the source as Ty2. - /// * Insert/Extract element pass only the vector type as Ty1. - /// * ShuffleVector, Load, Store do not use this call. - virtual unsigned getInstrCost(unsigned Opcode, - Type *Ty1 = 0, - Type *Ty2 = 0) const { - return 1; - } - - /// Returns the expected cost of arithmetic ops, such as mul, xor, fsub, etc. - virtual unsigned getArithmeticInstrCost(unsigned Opcode, Type *Ty) const { - return 1; - } - - /// Returns the cost of a vector broadcast of a scalar at place zero to a - /// vector of type 'Tp'. - virtual unsigned getBroadcastCost(Type *Tp) const { - return 1; - } - - /// Returns the expected cost of cast instructions, such as bitcast, trunc, - /// zext, etc. - virtual unsigned getCastInstrCost(unsigned Opcode, Type *Dst, - Type *Src) const { - return 1; - } - - /// Returns the expected cost of control-flow related instrutctions such as - /// Phi, Ret, Br. - virtual unsigned getCFInstrCost(unsigned Opcode) const { - return 1; - } - - /// Returns the expected cost of compare and select instructions. - virtual unsigned getCmpSelInstrCost(unsigned Opcode, Type *ValTy, - Type *CondTy = 0) const { - return 1; - } - - /// Returns the expected cost of vector Insert and Extract. - /// Use -1 to indicate that there is no information on the index value. - virtual unsigned getVectorInstrCost(unsigned Opcode, Type *Val, - unsigned Index = -1) const { - return 1; - } - - /// Returns the cost of Load and Store instructions. - virtual unsigned getMemoryOpCost(unsigned Opcode, Type *Src, - unsigned Alignment, - unsigned AddressSpace) const { - return 1; - } - - /// Returns the number of pieces into which the provided type must be - /// split during legalization. Zero is returned when the answer is unknown. - virtual unsigned getNumberOfParts(Type *Tp) const { - return 0; - } -}; - -} // End llvm namespace - -#endif |
