//
// 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.
//
//===----------------------------------------------------------------------===//
//
namespace llvm {
-struct AssemblyAnnotationWriter;
class PointerType;
class FunctionType;
class Module;
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.
///
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 {
/// 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<std::string> 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<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.
// 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
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