X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FInlineAsm.h;h=482e53e3fe24fcd052eeb967b7233502d9442c40;hb=9e6d1d1f5034347d237941f1bf08fba5c1583cd3;hp=44dd062ae748c24ee4929b247efc5f964b512f6b;hpb=ab77f73aeeefa5e572b2bae8216023f2aeaea4ec;p=oota-llvm.git diff --git a/include/llvm/InlineAsm.h b/include/llvm/InlineAsm.h index 44dd062ae74..482e53e3fe2 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. // //===----------------------------------------------------------------------===// // @@ -21,7 +21,6 @@ namespace llvm { -struct AssemblyAnnotationWriter; class PointerType; class FunctionType; class Module; @@ -32,17 +31,22 @@ class InlineAsm : public Value { std::string AsmString, Constraints; bool HasSideEffects; + bool IsAlignStack; - InlineAsm(const FunctionType *Ty, const std::string &AsmString, - const std::string &Constraints, bool hasSideEffects); + InlineAsm(const FunctionType *Ty, StringRef AsmString, + StringRef Constraints, bool hasSideEffects, + bool isAlignStack = false); + virtual ~InlineAsm(); public: /// InlineAsm::get - Return the 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. /// @@ -57,20 +61,17 @@ 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 &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 { isInput, // 'x' isOutput, // '=x' - isClobber, // '~x' + isClobber // '~x' }; struct ConstraintInfo { @@ -82,22 +83,34 @@ public: /// read. This is only ever set for an output operand. bool isEarlyClobber; - /// isIndirectOutput - If this is true for an output constraint, the address - /// to store the output result is passed as an operand to the call. - bool isIndirectOutput; + /// 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. + bool isCommutative; - /// 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; + /// isIndirect - True if this operand is an indirect operand. This means + /// that the address of the source or destination is present in the call + /// instruction, instead of it being returned or passed in explicitly. This + /// is represented with a '*' in the asm string. + bool isIndirect; /// Code - The constraint code, either the register name (in braces) or the /// constraint letter/number. std::vector Codes; - /// Parse - Analyze the specified string (e.g. "==&{eax}") and fill in the + /// 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); }; @@ -105,7 +118,7 @@ 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. @@ -117,8 +130,25 @@ public: // Methods for support type inquiry through isa, cast, and dyn_cast: static inline bool classof(const InlineAsm *) { return true; } static inline bool classof(const Value *V) { - return V->getValueType() == Value::InlineAsmVal; + return V->getValueID() == Value::InlineAsmVal; + } + + /// 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 & 0x80000000) == 0) + return false; + Idx = (Flag & ~0x80000000) >> 16; + return true; + } + + }; } // End llvm namespace