#define LLVM_INLINEASM_H
#include "llvm/Value.h"
+#include "llvm/ADT/StringRef.h"
#include <vector>
namespace llvm {
class FunctionType;
class Module;
struct InlineAsmKeyType;
-template<class ValType, class TypeClass, class ConstantClass, bool HasLargeKey>
+template<class ValType, class ValRefType, 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>;
+ friend class ConstantUniqueMap<InlineAsmKeyType, const InlineAsmKeyType&,
+ PointerType, InlineAsm, false>;
InlineAsm(const InlineAsm &); // do not implement
void operator=(const InlineAsm&); // do not implement
bool HasSideEffects;
bool IsAlignStack;
- InlineAsm(const PointerType *Ty, const std::string &AsmString,
+ InlineAsm(PointerType *Ty, const std::string &AsmString,
const std::string &Constraints, bool hasSideEffects,
bool isAlignStack);
virtual ~InlineAsm();
/// InlineAsm::get - Return the specified uniqued inline asm string.
///
- static InlineAsm *get(const FunctionType *Ty, StringRef AsmString,
+ static InlineAsm *get(FunctionType *Ty, StringRef AsmString,
StringRef Constraints, bool hasSideEffects,
bool isAlignStack = false);
/// getType - InlineAsm's are always pointers.
///
- const PointerType *getType() const {
- return reinterpret_cast<const PointerType*>(Value::getType());
+ PointerType *getType() const {
+ return reinterpret_cast<PointerType*>(Value::getType());
}
/// getFunctionType - InlineAsm's are always pointers to functions.
///
- const FunctionType *getFunctionType() const;
+ FunctionType *getFunctionType() const;
const std::string &getAsmString() const { return AsmString; }
const std::string &getConstraintString() const { return Constraints; }
/// the specified constraint string is legal for the type. This returns true
/// if legal, false if not.
///
- static bool Verify(const FunctionType *Ty, StringRef Constraints);
+ static bool Verify(FunctionType *Ty, StringRef Constraints);
// Constraint String Parsing
enum ConstraintPrefix {
// in the backend.
enum {
+ // Fixed operands on an INLINEASM SDNode.
Op_InputChain = 0,
Op_AsmString = 1,
Op_MDNode = 2,
Op_ExtraInfo = 3, // HasSideEffects, IsAlignStack
Op_FirstOperand = 4,
+ // Fixed operands on an INLINEASM MachineInstr.
MIOp_AsmString = 0,
MIOp_ExtraInfo = 1, // HasSideEffects, IsAlignStack
MIOp_FirstOperand = 2,
+ // Interpretation of the MIOp_ExtraInfo bit field.
Extra_HasSideEffects = 1,
Extra_IsAlignStack = 2,
-
- Kind_RegUse = 1,
- Kind_RegDef = 2,
- Kind_Imm = 3,
- Kind_Mem = 4,
- Kind_RegDefEarlyClobber = 6,
-
+
+ // Inline asm operands map to multiple SDNode / MachineInstr operands.
+ // The first operand is an immediate describing the asm operand, the low
+ // bits is the kind:
+ Kind_RegUse = 1, // Input register, "r".
+ Kind_RegDef = 2, // Output register, "=r".
+ Kind_RegDefEarlyClobber = 3, // Early-clobber output register, "=&r".
+ Kind_Clobber = 4, // Clobbered register, "~r".
+ Kind_Imm = 5, // Immediate.
+ Kind_Mem = 6, // Memory operand, "m".
+
Flag_MatchingOperand = 0x80000000
};
static unsigned getFlagWord(unsigned Kind, unsigned NumOps) {
assert(((NumOps << 3) & ~0xffff) == 0 && "Too many inline asm operands!");
+ assert(Kind >= Kind_RegUse && Kind <= Kind_Mem && "Invalid Kind");
return Kind | (NumOps << 3);
}
/// to a previous output operand.
static unsigned getFlagWordForMatchingOp(unsigned InputFlag,
unsigned MatchedOperandNo) {
+ assert(MatchedOperandNo <= 0x7fff && "Too big matched operand");
+ assert((InputFlag & ~0xffff) == 0 && "High bits already contain data");
return InputFlag | Flag_MatchingOperand | (MatchedOperandNo << 16);
}
+ /// getFlagWordForRegClass - Augment an existing flag word returned by
+ /// getFlagWord with the required register class for the following register
+ /// operands.
+ /// A tied use operand cannot have a register class, use the register class
+ /// from the def operand instead.
+ static unsigned getFlagWordForRegClass(unsigned InputFlag, unsigned RC) {
+ // Store RC + 1, reserve the value 0 to mean 'no register class'.
+ ++RC;
+ assert(RC <= 0x7fff && "Too large register class ID");
+ assert((InputFlag & ~0xffff) == 0 && "High bits already contain data");
+ return InputFlag | (RC << 16);
+ }
+
static unsigned getKind(unsigned Flags) {
return Flags & 7;
}
static bool isRegDefEarlyClobberKind(unsigned Flag) {
return getKind(Flag) == Kind_RegDefEarlyClobber;
}
-
+ static bool isClobberKind(unsigned Flag) {
+ return getKind(Flag) == Kind_Clobber;
+ }
+
/// getNumOperandRegisters - Extract the number of registers field from the
/// inline asm operand flag.
static unsigned getNumOperandRegisters(unsigned Flag) {
return true;
}
+ /// hasRegClassConstraint - Returns true if the flag contains a register
+ /// class constraint. Sets RC to the register class ID.
+ static bool hasRegClassConstraint(unsigned Flag, unsigned &RC) {
+ if (Flag & Flag_MatchingOperand)
+ return false;
+ unsigned High = Flag >> 16;
+ // getFlagWordForRegClass() uses 0 to mean no register class, and otherwise
+ // stores RC + 1.
+ if (!High)
+ return false;
+ RC = High - 1;
+ return true;
+ }
};
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