//
// 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.
//
//===----------------------------------------------------------------------===//
//
#define LLVM_INLINEASM_H
#include "llvm/Value.h"
-#include "llvm/System/IncludeFile.h"
#include <vector>
namespace llvm {
-struct AssemblyAnnotationWriter;
class PointerType;
class FunctionType;
class Module;
+struct InlineAsmKeyType;
+template<class ValType, class TypeClass, class ConstantClass, bool HasLargeKey>
+class ConstantUniqueMap;
+template<class ConstantClass, class TypeClass, class ValType>
+struct ConstantCreator;
class InlineAsm : public Value {
+ friend struct ConstantCreator<InlineAsm, PointerType, InlineAsmKeyType>;
+ friend class ConstantUniqueMap<InlineAsmKeyType, PointerType, InlineAsm,
+ false>;
+
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.
///
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 {
/// 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.
/// 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<InlineAsm::ConstraintInfo> &ConstraintsSoFar);
};
/// 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<ConstraintInfo>
- 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.
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
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