#define LLVM_MC_MCEXPR_H
#include "llvm/Support/Casting.h"
-#include "llvm/Support/DataTypes.h"
+#include "llvm/System/DataTypes.h"
namespace llvm {
+class MCAsmInfo;
class MCContext;
class MCSymbol;
class MCValue;
+class raw_ostream;
+class StringRef;
/// MCExpr - Base class for the full range of assembler expressions which are
-/// needed for parsing.
+/// needed for parsing.
class MCExpr {
public:
enum ExprKind {
SymbolRef, ///< References to labels and assigned expressions.
Unary ///< Unary expressions.
};
-
+
private:
ExprKind Kind;
-
+
+ MCExpr(const MCExpr&); // DO NOT IMPLEMENT
+ void operator=(const MCExpr&); // DO NOT IMPLEMENT
+
protected:
MCExpr(ExprKind _Kind) : Kind(_Kind) {}
-
+
public:
- virtual ~MCExpr();
+ /// @name Accessors
+ /// @{
ExprKind getKind() const { return Kind; }
+ /// @}
+ /// @name Utility Methods
+ /// @{
+
+ void print(raw_ostream &OS, const MCAsmInfo *MAI) const;
+ void dump() const;
+
+ /// @}
+ /// @name Expression Evaluation
+ /// @{
+
/// EvaluateAsAbsolute - Try to evaluate the expression to an absolute value.
///
/// @param Res - The absolute value, if evaluation succeeds.
/// @result - True on success.
- bool EvaluateAsAbsolute(MCContext &Ctx, int64_t &Res) const;
+ bool EvaluateAsAbsolute(int64_t &Res) const;
/// EvaluateAsRelocatable - Try to evaluate the expression to a relocatable
/// value, i.e. an expression of the fixed form (a - b + constant).
///
/// @param Res - The relocatable value, if evaluation succeeds.
/// @result - True on success.
- bool EvaluateAsRelocatable(MCContext &Ctx, MCValue &Res) const;
+ bool EvaluateAsRelocatable(MCValue &Res) const;
+
+ /// @}
static bool classof(const MCExpr *) { return true; }
};
class MCConstantExpr : public MCExpr {
int64_t Value;
-public:
- MCConstantExpr(int64_t _Value)
+ MCConstantExpr(int64_t _Value)
: MCExpr(MCExpr::Constant), Value(_Value) {}
-
+
+public:
+ /// @name Construction
+ /// @{
+
+ static const MCConstantExpr *Create(int64_t Value, MCContext &Ctx);
+
+ /// @}
+ /// @name Accessors
+ /// @{
+
int64_t getValue() const { return Value; }
- static bool classof(const MCExpr *E) {
- return E->getKind() == MCExpr::Constant;
+ /// @}
+
+ static bool classof(const MCExpr *E) {
+ return E->getKind() == MCExpr::Constant;
}
static bool classof(const MCConstantExpr *) { return true; }
};
/// assembler variable (defined constant), or constitute an implicit definition
/// of the symbol as external.
class MCSymbolRefExpr : public MCExpr {
- MCSymbol *Symbol;
+ const MCSymbol *Symbol;
-public:
- MCSymbolRefExpr(MCSymbol *_Symbol)
+ MCSymbolRefExpr(const MCSymbol *_Symbol)
: MCExpr(MCExpr::SymbolRef), Symbol(_Symbol) {}
-
- MCSymbol *getSymbol() const { return Symbol; }
- static bool classof(const MCExpr *E) {
- return E->getKind() == MCExpr::SymbolRef;
+public:
+ /// @name Construction
+ /// @{
+
+ static const MCSymbolRefExpr *Create(const MCSymbol *Symbol, MCContext &Ctx);
+ static const MCSymbolRefExpr *Create(const StringRef &Name, MCContext &Ctx);
+
+ /// @}
+ /// @name Accessors
+ /// @{
+
+ const MCSymbol &getSymbol() const { return *Symbol; }
+
+ /// @}
+
+ static bool classof(const MCExpr *E) {
+ return E->getKind() == MCExpr::SymbolRef;
}
static bool classof(const MCSymbolRefExpr *) { return true; }
};
private:
Opcode Op;
- MCExpr *Expr;
+ const MCExpr *Expr;
-public:
- MCUnaryExpr(Opcode _Op, MCExpr *_Expr)
+ MCUnaryExpr(Opcode _Op, const MCExpr *_Expr)
: MCExpr(MCExpr::Unary), Op(_Op), Expr(_Expr) {}
- ~MCUnaryExpr() {
- delete Expr;
+
+public:
+ /// @name Construction
+ /// @{
+
+ static const MCUnaryExpr *Create(Opcode Op, const MCExpr *Expr,
+ MCContext &Ctx);
+ static const MCUnaryExpr *CreateLNot(const MCExpr *Expr, MCContext &Ctx) {
+ return Create(LNot, Expr, Ctx);
+ }
+ static const MCUnaryExpr *CreateMinus(const MCExpr *Expr, MCContext &Ctx) {
+ return Create(Minus, Expr, Ctx);
+ }
+ static const MCUnaryExpr *CreateNot(const MCExpr *Expr, MCContext &Ctx) {
+ return Create(Not, Expr, Ctx);
+ }
+ static const MCUnaryExpr *CreatePlus(const MCExpr *Expr, MCContext &Ctx) {
+ return Create(Plus, Expr, Ctx);
}
+ /// @}
+ /// @name Accessors
+ /// @{
+
+ /// getOpcode - Get the kind of this unary expression.
Opcode getOpcode() const { return Op; }
- MCExpr *getSubExpr() const { return Expr; }
+ /// getSubExpr - Get the child of this unary expression.
+ const MCExpr *getSubExpr() const { return Expr; }
+
+ /// @}
- static bool classof(const MCExpr *E) {
- return E->getKind() == MCExpr::Unary;
+ static bool classof(const MCExpr *E) {
+ return E->getKind() == MCExpr::Unary;
}
static bool classof(const MCUnaryExpr *) { return true; }
};
private:
Opcode Op;
- MCExpr *LHS, *RHS;
+ const MCExpr *LHS, *RHS;
-public:
- MCBinaryExpr(Opcode _Op, MCExpr *_LHS, MCExpr *_RHS)
+ MCBinaryExpr(Opcode _Op, const MCExpr *_LHS, const MCExpr *_RHS)
: MCExpr(MCExpr::Binary), Op(_Op), LHS(_LHS), RHS(_RHS) {}
- ~MCBinaryExpr() {
- delete LHS;
- delete RHS;
+
+public:
+ /// @name Construction
+ /// @{
+
+ static const MCBinaryExpr *Create(Opcode Op, const MCExpr *LHS,
+ const MCExpr *RHS, MCContext &Ctx);
+ static const MCBinaryExpr *CreateAdd(const MCExpr *LHS, const MCExpr *RHS,
+ MCContext &Ctx) {
+ return Create(Add, LHS, RHS, Ctx);
+ }
+ static const MCBinaryExpr *CreateAnd(const MCExpr *LHS, const MCExpr *RHS,
+ MCContext &Ctx) {
+ return Create(And, LHS, RHS, Ctx);
+ }
+ static const MCBinaryExpr *CreateDiv(const MCExpr *LHS, const MCExpr *RHS,
+ MCContext &Ctx) {
+ return Create(Div, LHS, RHS, Ctx);
+ }
+ static const MCBinaryExpr *CreateEQ(const MCExpr *LHS, const MCExpr *RHS,
+ MCContext &Ctx) {
+ return Create(EQ, LHS, RHS, Ctx);
+ }
+ static const MCBinaryExpr *CreateGT(const MCExpr *LHS, const MCExpr *RHS,
+ MCContext &Ctx) {
+ return Create(GT, LHS, RHS, Ctx);
+ }
+ static const MCBinaryExpr *CreateGTE(const MCExpr *LHS, const MCExpr *RHS,
+ MCContext &Ctx) {
+ return Create(GTE, LHS, RHS, Ctx);
+ }
+ static const MCBinaryExpr *CreateLAnd(const MCExpr *LHS, const MCExpr *RHS,
+ MCContext &Ctx) {
+ return Create(LAnd, LHS, RHS, Ctx);
}
+ static const MCBinaryExpr *CreateLOr(const MCExpr *LHS, const MCExpr *RHS,
+ MCContext &Ctx) {
+ return Create(LOr, LHS, RHS, Ctx);
+ }
+ static const MCBinaryExpr *CreateLT(const MCExpr *LHS, const MCExpr *RHS,
+ MCContext &Ctx) {
+ return Create(LT, LHS, RHS, Ctx);
+ }
+ static const MCBinaryExpr *CreateLTE(const MCExpr *LHS, const MCExpr *RHS,
+ MCContext &Ctx) {
+ return Create(LTE, LHS, RHS, Ctx);
+ }
+ static const MCBinaryExpr *CreateMod(const MCExpr *LHS, const MCExpr *RHS,
+ MCContext &Ctx) {
+ return Create(Mod, LHS, RHS, Ctx);
+ }
+ static const MCBinaryExpr *CreateMul(const MCExpr *LHS, const MCExpr *RHS,
+ MCContext &Ctx) {
+ return Create(Mul, LHS, RHS, Ctx);
+ }
+ static const MCBinaryExpr *CreateNE(const MCExpr *LHS, const MCExpr *RHS,
+ MCContext &Ctx) {
+ return Create(NE, LHS, RHS, Ctx);
+ }
+ static const MCBinaryExpr *CreateOr(const MCExpr *LHS, const MCExpr *RHS,
+ MCContext &Ctx) {
+ return Create(Or, LHS, RHS, Ctx);
+ }
+ static const MCBinaryExpr *CreateShl(const MCExpr *LHS, const MCExpr *RHS,
+ MCContext &Ctx) {
+ return Create(Shl, LHS, RHS, Ctx);
+ }
+ static const MCBinaryExpr *CreateShr(const MCExpr *LHS, const MCExpr *RHS,
+ MCContext &Ctx) {
+ return Create(Shr, LHS, RHS, Ctx);
+ }
+ static const MCBinaryExpr *CreateSub(const MCExpr *LHS, const MCExpr *RHS,
+ MCContext &Ctx) {
+ return Create(Sub, LHS, RHS, Ctx);
+ }
+ static const MCBinaryExpr *CreateXor(const MCExpr *LHS, const MCExpr *RHS,
+ MCContext &Ctx) {
+ return Create(Xor, LHS, RHS, Ctx);
+ }
+
+ /// @}
+ /// @name Accessors
+ /// @{
+ /// getOpcode - Get the kind of this binary expression.
Opcode getOpcode() const { return Op; }
/// getLHS - Get the left-hand side expression of the binary operator.
- MCExpr *getLHS() const { return LHS; }
+ const MCExpr *getLHS() const { return LHS; }
/// getRHS - Get the right-hand side expression of the binary operator.
- MCExpr *getRHS() const { return RHS; }
+ const MCExpr *getRHS() const { return RHS; }
+
+ /// @}
- static bool classof(const MCExpr *E) {
- return E->getKind() == MCExpr::Binary;
+ static bool classof(const MCExpr *E) {
+ return E->getKind() == MCExpr::Binary;
}
static bool classof(const MCBinaryExpr *) { return true; }
};
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