X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FInlineAsm.h;h=105b1bcd94c5d903467e6e0ef099688a3dac6ba3;hb=f1e309eb4862459a76445942ba4dafc433b6f317;hp=bf7b4194758d0bc799c8d44c99064f51f3571f09;hpb=ed455c8fa25dd37a13b33f0afa66be03ac49b5bb;p=oota-llvm.git diff --git a/include/llvm/InlineAsm.h b/include/llvm/InlineAsm.h index bf7b4194758..105b1bcd94c 100644 --- a/include/llvm/InlineAsm.h +++ b/include/llvm/InlineAsm.h @@ -2,8 +2,8 @@ // // The LLVM Compiler Infrastructure // -// This file was developed by Chris Lattner and is distributed under -// the University of Illinois Open Source License. See LICENSE.TXT for details. +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // @@ -17,37 +17,49 @@ #define LLVM_INLINEASM_H #include "llvm/Value.h" -#include "llvm/System/IncludeFile.h" #include namespace llvm { -struct AssemblyAnnotationWriter; class PointerType; class FunctionType; class Module; +struct InlineAsmKeyType; +template +class ConstantUniqueMap; +template +struct ConstantCreator; class InlineAsm : public Value { + friend struct ConstantCreator; + friend class ConstantUniqueMap; + InlineAsm(const InlineAsm &); // do not implement void operator=(const InlineAsm&); // do not implement std::string AsmString, Constraints; bool HasSideEffects; + bool IsAlignStack; - InlineAsm(const FunctionType *Ty, const std::string &AsmString, - const std::string &Constraints, bool hasSideEffects); -protected: - static void destroyThis(InlineAsm*v) { - Value::destroyThis(v); - } - friend class Value; + InlineAsm(const PointerType *Ty, const std::string &AsmString, + const std::string &Constraints, bool hasSideEffects, + bool isAlignStack); + virtual ~InlineAsm(); + + /// When the ConstantUniqueMap merges two types and makes two InlineAsms + /// identical, it destroys one of them with this method. + void destroyConstant(); public: - /// InlineAsm::get - Return the the specified uniqued inline asm string. + + /// InlineAsm::get - Return the specified uniqued inline asm string. /// - static InlineAsm *get(const FunctionType *Ty, const std::string &AsmString, - const std::string &Constraints, bool hasSideEffects); + static InlineAsm *get(const FunctionType *Ty, StringRef AsmString, + StringRef Constraints, bool hasSideEffects, + bool isAlignStack = false); bool hasSideEffects() const { return HasSideEffects; } + bool isAlignStack() const { return IsAlignStack; } /// getType - InlineAsm's are always pointers. /// @@ -62,15 +74,11 @@ public: const std::string &getAsmString() const { return AsmString; } const std::string &getConstraintString() const { return Constraints; } - virtual void print(std::ostream &O) const { print(O, 0); } - void print(std::ostream *O) const { if (O) print(*O); } - void print(std::ostream &OS, AssemblyAnnotationWriter *AAW) const; - /// Verify - This static method can be used by the parser to check to see if /// the specified constraint string is legal for the type. This returns true /// if legal, false if not. /// - static bool Verify(const FunctionType *Ty, const std::string &Constraints); + static bool Verify(const FunctionType *Ty, StringRef Constraints); // Constraint String Parsing enum ConstraintPrefix { @@ -88,9 +96,15 @@ public: /// read. This is only ever set for an output operand. bool isEarlyClobber; - /// hasMatchingInput - This is set to true for an output constraint iff - /// there is an input constraint that is required to match it (e.g. "0"). - bool hasMatchingInput; + /// MatchingInput - If this is not -1, this is an output constraint where an + /// input constraint is required to match it (e.g. "0"). The value is the + /// constraint number that matches this one (for example, if this is + /// constraint #0 and constraint #4 has the value "0", this will be 4). + signed char MatchingInput; + + /// hasMatchingInput - Return true if this is an output constraint that has + /// a matching input constraint. + bool hasMatchingInput() const { return MatchingInput != -1; } /// isCommutative - This is set to true for a constraint that is commutative /// with the next operand. @@ -109,7 +123,7 @@ public: /// Parse - Analyze the specified string (e.g. "=*&{eax}") and fill in the /// fields in this structure. If the constraint string is not understood, /// return true, otherwise return false. - bool Parse(const std::string &Str, + bool Parse(StringRef Str, std::vector &ConstraintsSoFar); }; @@ -117,7 +131,7 @@ public: /// constraints and their prefixes. If this returns an empty vector, and if /// the constraint string itself isn't empty, there was an error parsing. static std::vector - ParseConstraints(const std::string &ConstraintString); + ParseConstraints(StringRef ConstraintString); /// ParseConstraints - Parse the constraints of this inlineasm object, /// returning them the same way that ParseConstraints(str) does. @@ -131,11 +145,69 @@ public: static inline bool classof(const Value *V) { return V->getValueID() == Value::InlineAsmVal; } + + + // These are helper methods for dealing with flags in the INLINEASM SDNode + // in the backend. + + enum { + Op_InputChain = 0, + Op_AsmString = 1, + Op_MDNode = 2, + Op_IsAlignStack = 3, + Op_FirstOperand = 4, + + Kind_RegUse = 1, + Kind_RegDef = 2, + Kind_Imm = 3, + Kind_Mem = 4, + Kind_RegDefEarlyClobber = 6, + + Flag_MatchingOperand = 0x80000000 + }; + + static unsigned getFlagWord(unsigned Kind, unsigned NumOps) { + assert(((NumOps << 3) & ~0xffff) == 0 && "Too many inline asm operands!"); + return Kind | (NumOps << 3); + } + + /// getFlagWordForMatchingOp - Augment an existing flag word returned by + /// getFlagWord with information indicating that this input operand is tied + /// to a previous output operand. + static unsigned getFlagWordForMatchingOp(unsigned InputFlag, + unsigned MatchedOperandNo) { + return InputFlag | Flag_MatchingOperand | (MatchedOperandNo << 16); + } + + static unsigned getKind(unsigned Flags) { + return Flags & 7; + } + + static bool isRegDefKind(unsigned Flag){ return getKind(Flag) == Kind_RegDef;} + static bool isImmKind(unsigned Flag) { return getKind(Flag) == Kind_Imm; } + static bool isMemKind(unsigned Flag) { return getKind(Flag) == Kind_Mem; } + static bool isRegDefEarlyClobberKind(unsigned Flag) { + return getKind(Flag) == Kind_RegDefEarlyClobber; + } + + /// getNumOperandRegisters - Extract the number of registers field from the + /// inline asm operand flag. + static unsigned getNumOperandRegisters(unsigned Flag) { + return (Flag & 0xffff) >> 3; + } + + /// isUseOperandTiedToDef - Return true if the flag of the inline asm + /// operand indicates it is an use operand that's matched to a def operand. + static bool isUseOperandTiedToDef(unsigned Flag, unsigned &Idx) { + if ((Flag & Flag_MatchingOperand) == 0) + return false; + Idx = (Flag & ~Flag_MatchingOperand) >> 16; + return true; + } + + }; } // End llvm namespace -// Make sure the InlineAsm.cpp file is linked when this one is #included. -FORCE_DEFINING_FILE_TO_BE_LINKED(InlineAsm) - #endif