mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-20 10:30:03 +00:00
llvm-mc: Switch MCExpr construction to using static member functions, and taking the MCContext (which now owns all MCExprs).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80569 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Dunbar
parent
869a5e7d66
commit
9643ac5514
@ -19,7 +19,7 @@ class MCSymbol;
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class MCValue;
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/// MCExpr - Base class for the full range of assembler expressions which are
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/// needed for parsing.
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/// needed for parsing.
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class MCExpr {
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public:
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enum ExprKind {
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@ -28,18 +28,26 @@ public:
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SymbolRef, ///< References to labels and assigned expressions.
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Unary ///< Unary expressions.
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};
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private:
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ExprKind Kind;
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MCExpr(const MCExpr&); // DO NOT IMPLEMENT
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void operator=(const MCExpr&); // DO NOT IMPLEMENT
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protected:
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MCExpr(ExprKind _Kind) : Kind(_Kind) {}
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public:
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virtual ~MCExpr();
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/// @name Accessors
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/// @{
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ExprKind getKind() const { return Kind; }
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/// @}
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/// @name Expression Evaluation
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/// @{
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/// EvaluateAsAbsolute - Try to evaluate the expression to an absolute value.
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///
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/// @param Res - The absolute value, if evaluation succeeds.
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@ -53,6 +61,8 @@ public:
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/// @result - True on success.
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bool EvaluateAsRelocatable(MCContext &Ctx, MCValue &Res) const;
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/// @}
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static bool classof(const MCExpr *) { return true; }
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};
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@ -60,14 +70,25 @@ public:
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class MCConstantExpr : public MCExpr {
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int64_t Value;
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public:
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MCConstantExpr(int64_t _Value)
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MCConstantExpr(int64_t _Value)
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: MCExpr(MCExpr::Constant), Value(_Value) {}
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public:
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/// @name Construction
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/// @{
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static const MCConstantExpr *Create(int64_t Value, MCContext &Ctx);
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/// @}
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/// @name Accessors
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/// @{
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int64_t getValue() const { return Value; }
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static bool classof(const MCExpr *E) {
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return E->getKind() == MCExpr::Constant;
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/// @}
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static bool classof(const MCExpr *E) {
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return E->getKind() == MCExpr::Constant;
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}
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static bool classof(const MCConstantExpr *) { return true; }
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};
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@ -79,16 +100,27 @@ public:
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/// assembler variable (defined constant), or constitute an implicit definition
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/// of the symbol as external.
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class MCSymbolRefExpr : public MCExpr {
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MCSymbol *Symbol;
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const MCSymbol *Symbol;
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MCSymbolRefExpr(const MCSymbol *_Symbol)
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: MCExpr(MCExpr::SymbolRef), Symbol(_Symbol) {}
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public:
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MCSymbolRefExpr(MCSymbol *_Symbol)
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: MCExpr(MCExpr::SymbolRef), Symbol(_Symbol) {}
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MCSymbol *getSymbol() const { return Symbol; }
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/// @name Construction
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/// @{
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static bool classof(const MCExpr *E) {
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return E->getKind() == MCExpr::SymbolRef;
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static const MCSymbolRefExpr *Create(const MCSymbol *Symbol, MCContext &Ctx);
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/// @}
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/// @name Accessors
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/// @{
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const MCSymbol &getSymbol() const { return *Symbol; }
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/// @}
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static bool classof(const MCExpr *E) {
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return E->getKind() == MCExpr::SymbolRef;
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}
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static bool classof(const MCSymbolRefExpr *) { return true; }
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};
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@ -105,21 +137,44 @@ public:
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private:
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Opcode Op;
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MCExpr *Expr;
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const MCExpr *Expr;
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MCUnaryExpr(Opcode _Op, const MCExpr *_Expr)
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: MCExpr(MCExpr::Unary), Op(_Op), Expr(_Expr) {}
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public:
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MCUnaryExpr(Opcode _Op, MCExpr *_Expr)
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: MCExpr(MCExpr::Unary), Op(_Op), Expr(_Expr) {}
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~MCUnaryExpr() {
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delete Expr;
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/// @name Construction
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/// @{
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static const MCUnaryExpr *Create(Opcode Op, const MCExpr *Expr,
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MCContext &Ctx);
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static const MCUnaryExpr *CreateLNot(const MCExpr *Expr, MCContext &Ctx) {
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return Create(LNot, Expr, Ctx);
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}
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static const MCUnaryExpr *CreateMinus(const MCExpr *Expr, MCContext &Ctx) {
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return Create(Minus, Expr, Ctx);
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}
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static const MCUnaryExpr *CreateNot(const MCExpr *Expr, MCContext &Ctx) {
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return Create(Not, Expr, Ctx);
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}
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static const MCUnaryExpr *CreatePlus(const MCExpr *Expr, MCContext &Ctx) {
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return Create(Plus, Expr, Ctx);
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}
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/// @}
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/// @name Accessors
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/// @{
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/// getOpcode - Get the kind of this unary expression.
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Opcode getOpcode() const { return Op; }
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MCExpr *getSubExpr() const { return Expr; }
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/// getSubExpr - Get the child of this unary expression.
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const MCExpr *getSubExpr() const { return Expr; }
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static bool classof(const MCExpr *E) {
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return E->getKind() == MCExpr::Unary;
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/// @}
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static bool classof(const MCExpr *E) {
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return E->getKind() == MCExpr::Unary;
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}
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static bool classof(const MCUnaryExpr *) { return true; }
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};
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@ -150,26 +205,107 @@ public:
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private:
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Opcode Op;
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MCExpr *LHS, *RHS;
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const MCExpr *LHS, *RHS;
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MCBinaryExpr(Opcode _Op, const MCExpr *_LHS, const MCExpr *_RHS)
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: MCExpr(MCExpr::Binary), Op(_Op), LHS(_LHS), RHS(_RHS) {}
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public:
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MCBinaryExpr(Opcode _Op, MCExpr *_LHS, MCExpr *_RHS)
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: MCExpr(MCExpr::Binary), Op(_Op), LHS(_LHS), RHS(_RHS) {}
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~MCBinaryExpr() {
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delete LHS;
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delete RHS;
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/// @name Construction
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/// @{
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static const MCBinaryExpr *Create(Opcode Op, const MCExpr *LHS,
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const MCExpr *RHS, MCContext &Ctx);
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static const MCBinaryExpr *CreateAdd(const MCExpr *LHS, const MCExpr *RHS,
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MCContext &Ctx) {
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return Create(Add, LHS, RHS, Ctx);
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}
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static const MCBinaryExpr *CreateAnd(const MCExpr *LHS, const MCExpr *RHS,
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MCContext &Ctx) {
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return Create(And, LHS, RHS, Ctx);
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}
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static const MCBinaryExpr *CreateDiv(const MCExpr *LHS, const MCExpr *RHS,
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MCContext &Ctx) {
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return Create(Div, LHS, RHS, Ctx);
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}
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static const MCBinaryExpr *CreateEQ(const MCExpr *LHS, const MCExpr *RHS,
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MCContext &Ctx) {
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return Create(EQ, LHS, RHS, Ctx);
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}
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static const MCBinaryExpr *CreateGT(const MCExpr *LHS, const MCExpr *RHS,
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MCContext &Ctx) {
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return Create(GT, LHS, RHS, Ctx);
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}
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static const MCBinaryExpr *CreateGTE(const MCExpr *LHS, const MCExpr *RHS,
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MCContext &Ctx) {
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return Create(GTE, LHS, RHS, Ctx);
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}
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static const MCBinaryExpr *CreateLAnd(const MCExpr *LHS, const MCExpr *RHS,
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MCContext &Ctx) {
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return Create(LAnd, LHS, RHS, Ctx);
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}
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static const MCBinaryExpr *CreateLOr(const MCExpr *LHS, const MCExpr *RHS,
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MCContext &Ctx) {
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return Create(LOr, LHS, RHS, Ctx);
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}
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static const MCBinaryExpr *CreateLT(const MCExpr *LHS, const MCExpr *RHS,
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MCContext &Ctx) {
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return Create(LT, LHS, RHS, Ctx);
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}
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static const MCBinaryExpr *CreateLTE(const MCExpr *LHS, const MCExpr *RHS,
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MCContext &Ctx) {
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return Create(LTE, LHS, RHS, Ctx);
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}
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static const MCBinaryExpr *CreateMod(const MCExpr *LHS, const MCExpr *RHS,
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MCContext &Ctx) {
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return Create(Mod, LHS, RHS, Ctx);
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}
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static const MCBinaryExpr *CreateMul(const MCExpr *LHS, const MCExpr *RHS,
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MCContext &Ctx) {
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return Create(Mul, LHS, RHS, Ctx);
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}
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static const MCBinaryExpr *CreateNE(const MCExpr *LHS, const MCExpr *RHS,
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MCContext &Ctx) {
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return Create(NE, LHS, RHS, Ctx);
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}
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static const MCBinaryExpr *CreateOr(const MCExpr *LHS, const MCExpr *RHS,
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MCContext &Ctx) {
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return Create(Or, LHS, RHS, Ctx);
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}
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static const MCBinaryExpr *CreateShl(const MCExpr *LHS, const MCExpr *RHS,
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MCContext &Ctx) {
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return Create(Shl, LHS, RHS, Ctx);
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}
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static const MCBinaryExpr *CreateShr(const MCExpr *LHS, const MCExpr *RHS,
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MCContext &Ctx) {
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return Create(Shr, LHS, RHS, Ctx);
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}
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static const MCBinaryExpr *CreateSub(const MCExpr *LHS, const MCExpr *RHS,
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MCContext &Ctx) {
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return Create(Sub, LHS, RHS, Ctx);
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}
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static const MCBinaryExpr *CreateXor(const MCExpr *LHS, const MCExpr *RHS,
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MCContext &Ctx) {
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return Create(Xor, LHS, RHS, Ctx);
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}
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/// @}
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/// @name Accessors
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/// @{
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/// getOpcode - Get the kind of this binary expression.
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Opcode getOpcode() const { return Op; }
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/// getLHS - Get the left-hand side expression of the binary operator.
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MCExpr *getLHS() const { return LHS; }
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const MCExpr *getLHS() const { return LHS; }
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/// getRHS - Get the right-hand side expression of the binary operator.
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MCExpr *getRHS() const { return RHS; }
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const MCExpr *getRHS() const { return RHS; }
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static bool classof(const MCExpr *E) {
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return E->getKind() == MCExpr::Binary;
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/// @}
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static bool classof(const MCExpr *E) {
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return E->getKind() == MCExpr::Binary;
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}
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static bool classof(const MCBinaryExpr *) { return true; }
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};
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@ -13,9 +13,30 @@
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#include "llvm/MC/MCValue.h"
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using namespace llvm;
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MCExpr::~MCExpr() {
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const MCBinaryExpr * MCBinaryExpr::Create(Opcode Opc,
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const MCExpr *LHS,
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const MCExpr *RHS,
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MCContext &Ctx) {
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return new (Ctx) MCBinaryExpr(Opc, LHS, RHS);
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}
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const MCUnaryExpr * MCUnaryExpr::Create(Opcode Opc,
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const MCExpr *Expr,
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MCContext &Ctx) {
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return new (Ctx) MCUnaryExpr(Opc, Expr);
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}
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const MCConstantExpr *MCConstantExpr::Create(int64_t Value, MCContext &Ctx) {
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return new (Ctx) MCConstantExpr(Value);
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}
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const MCSymbolRefExpr *MCSymbolRefExpr::Create(const MCSymbol *Sym,
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MCContext &Ctx) {
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return new (Ctx) MCSymbolRefExpr(Sym);
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}
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/* *** */
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bool MCExpr::EvaluateAsAbsolute(MCContext &Ctx, int64_t &Res) const {
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MCValue Value;
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@ -50,19 +71,16 @@ static bool EvaluateSymbolicAdd(const MCValue &LHS, const MCSymbol *RHS_A,
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bool MCExpr::EvaluateAsRelocatable(MCContext &Ctx, MCValue &Res) const {
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switch (getKind()) {
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default:
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assert(0 && "Invalid assembly expression kind!");
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case Constant:
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Res = MCValue::get(cast<MCConstantExpr>(this)->getValue());
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return true;
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case SymbolRef: {
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MCSymbol *Sym = cast<MCSymbolRefExpr>(this)->getSymbol();
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if (const MCValue *Value = Ctx.GetSymbolValue(Sym))
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const MCSymbol &Sym = cast<MCSymbolRefExpr>(this)->getSymbol();
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if (const MCValue *Value = Ctx.GetSymbolValue(&Sym))
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Res = *Value;
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else
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Res = MCValue::get(Sym, 0, 0);
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Res = MCValue::get(&Sym, 0, 0);
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return true;
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}
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@ -158,5 +176,7 @@ bool MCExpr::EvaluateAsRelocatable(MCContext &Ctx, MCValue &Res) const {
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return true;
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}
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}
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}
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assert(0 && "Invalid assembly expression kind!");
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return false;
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}
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@ -173,7 +173,7 @@ void AsmParser::EatToEndOfStatement() {
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///
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/// parenexpr ::= expr)
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///
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bool AsmParser::ParseParenExpr(MCExpr *&Res) {
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bool AsmParser::ParseParenExpr(const MCExpr *&Res) {
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if (ParseExpression(Res)) return true;
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if (Lexer.isNot(AsmToken::RParen))
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return TokError("expected ')' in parentheses expression");
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@ -197,7 +197,7 @@ MCSymbol *AsmParser::CreateSymbol(StringRef Name) {
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/// primaryexpr ::= symbol
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/// primaryexpr ::= number
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/// primaryexpr ::= ~,+,- primaryexpr
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bool AsmParser::ParsePrimaryExpr(MCExpr *&Res) {
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bool AsmParser::ParsePrimaryExpr(const MCExpr *&Res) {
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switch (Lexer.getKind()) {
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default:
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return TokError("unknown token in expression");
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@ -205,7 +205,7 @@ bool AsmParser::ParsePrimaryExpr(MCExpr *&Res) {
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Lexer.Lex(); // Eat the operator.
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if (ParsePrimaryExpr(Res))
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return true;
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Res = new MCUnaryExpr(MCUnaryExpr::LNot, Res);
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Res = MCUnaryExpr::CreateLNot(Res, Ctx);
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return false;
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case AsmToken::String:
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case AsmToken::Identifier: {
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@ -213,12 +213,12 @@ bool AsmParser::ParsePrimaryExpr(MCExpr *&Res) {
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// handle things like LFOO+4.
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MCSymbol *Sym = CreateSymbol(Lexer.getTok().getIdentifier());
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Res = new MCSymbolRefExpr(Sym);
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Res = MCSymbolRefExpr::Create(Sym, Ctx);
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Lexer.Lex(); // Eat identifier.
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return false;
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}
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case AsmToken::Integer:
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Res = new MCConstantExpr(Lexer.getTok().getIntVal());
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Res = MCConstantExpr::Create(Lexer.getTok().getIntVal(), Ctx);
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Lexer.Lex(); // Eat token.
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return false;
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case AsmToken::LParen:
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@ -228,19 +228,19 @@ bool AsmParser::ParsePrimaryExpr(MCExpr *&Res) {
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Lexer.Lex(); // Eat the operator.
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if (ParsePrimaryExpr(Res))
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return true;
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Res = new MCUnaryExpr(MCUnaryExpr::Minus, Res);
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Res = MCUnaryExpr::CreateMinus(Res, Ctx);
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return false;
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case AsmToken::Plus:
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Lexer.Lex(); // Eat the operator.
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if (ParsePrimaryExpr(Res))
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return true;
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Res = new MCUnaryExpr(MCUnaryExpr::Plus, Res);
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Res = MCUnaryExpr::CreatePlus(Res, Ctx);
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return false;
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case AsmToken::Tilde:
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Lexer.Lex(); // Eat the operator.
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if (ParsePrimaryExpr(Res))
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return true;
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Res = new MCUnaryExpr(MCUnaryExpr::Not, Res);
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Res = MCUnaryExpr::CreateNot(Res, Ctx);
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return false;
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}
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}
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@ -252,14 +252,14 @@ bool AsmParser::ParsePrimaryExpr(MCExpr *&Res) {
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/// expr ::= expr *,/,%,<<,>> expr -> highest.
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/// expr ::= primaryexpr
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///
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bool AsmParser::ParseExpression(MCExpr *&Res) {
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bool AsmParser::ParseExpression(const MCExpr *&Res) {
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Res = 0;
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return ParsePrimaryExpr(Res) ||
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ParseBinOpRHS(1, Res);
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}
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bool AsmParser::ParseAbsoluteExpression(int64_t &Res) {
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MCExpr *Expr;
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const MCExpr *Expr;
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SMLoc StartLoc = Lexer.getLoc();
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if (ParseExpression(Expr))
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@ -272,7 +272,7 @@ bool AsmParser::ParseAbsoluteExpression(int64_t &Res) {
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}
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bool AsmParser::ParseRelocatableExpression(MCValue &Res) {
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MCExpr *Expr;
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const MCExpr *Expr;
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SMLoc StartLoc = Lexer.getLoc();
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if (ParseExpression(Expr))
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@ -285,7 +285,7 @@ bool AsmParser::ParseRelocatableExpression(MCValue &Res) {
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}
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bool AsmParser::ParseParenRelocatableExpression(MCValue &Res) {
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MCExpr *Expr;
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const MCExpr *Expr;
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SMLoc StartLoc = Lexer.getLoc();
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if (ParseParenExpr(Expr))
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@ -372,7 +372,7 @@ static unsigned getBinOpPrecedence(AsmToken::TokenKind K,
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/// ParseBinOpRHS - Parse all binary operators with precedence >= 'Precedence'.
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/// Res contains the LHS of the expression on input.
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bool AsmParser::ParseBinOpRHS(unsigned Precedence, MCExpr *&Res) {
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bool AsmParser::ParseBinOpRHS(unsigned Precedence, const MCExpr *&Res) {
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while (1) {
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MCBinaryExpr::Opcode Kind = MCBinaryExpr::Add;
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unsigned TokPrec = getBinOpPrecedence(Lexer.getKind(), Kind);
|
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@ -385,7 +385,7 @@ bool AsmParser::ParseBinOpRHS(unsigned Precedence, MCExpr *&Res) {
|
||||
Lexer.Lex();
|
||||
|
||||
// Eat the next primary expression.
|
||||
MCExpr *RHS;
|
||||
const MCExpr *RHS;
|
||||
if (ParsePrimaryExpr(RHS)) return true;
|
||||
|
||||
// If BinOp binds less tightly with RHS than the operator after RHS, let
|
||||
@ -397,7 +397,7 @@ bool AsmParser::ParseBinOpRHS(unsigned Precedence, MCExpr *&Res) {
|
||||
}
|
||||
|
||||
// Merge LHS and RHS according to operator.
|
||||
Res = new MCBinaryExpr(Kind, Res, RHS);
|
||||
Res = MCBinaryExpr::Create(Kind, Res, RHS, Ctx);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -66,7 +66,7 @@ public:
|
||||
|
||||
virtual bool Error(SMLoc L, const Twine &Msg);
|
||||
|
||||
virtual bool ParseExpression(MCExpr *&Res);
|
||||
virtual bool ParseExpression(const MCExpr *&Res);
|
||||
|
||||
virtual bool ParseAbsoluteExpression(int64_t &Res);
|
||||
|
||||
@ -104,9 +104,9 @@ private:
|
||||
/// @see ParseRelocatableExpression, ParseParenExpr.
|
||||
bool ParseParenRelocatableExpression(MCValue &Res);
|
||||
|
||||
bool ParsePrimaryExpr(MCExpr *&Res);
|
||||
bool ParseBinOpRHS(unsigned Precedence, MCExpr *&Res);
|
||||
bool ParseParenExpr(MCExpr *&Res);
|
||||
bool ParsePrimaryExpr(const MCExpr *&Res);
|
||||
bool ParseBinOpRHS(unsigned Precedence, const MCExpr *&Res);
|
||||
bool ParseParenExpr(const MCExpr *&Res);
|
||||
|
||||
/// ParseIdentifier - Parse an identifier or string (as a quoted identifier)
|
||||
/// and set \arg Res to the identifier contents.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user