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llvm-mc: Move AsmExpr into MC lib (as MCExpr).

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80567 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Dunbar 2009-08-31 08:06:59 +00:00
parent be577659d3
commit 28c251b54b
6 changed files with 122 additions and 122 deletions
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92
tools/llvm-mc/AsmExpr.h → include/llvm/MC/MCExpr.h
View File

@ -1,4 +1,4 @@
//===- AsmExpr.h - Assembly file expressions --------------------*- C++ -*-===// //===- MCExpr.h - Assembly Level Expressions --------------------*- C++ -*-===//
// //
// The LLVM Compiler Infrastructure // The LLVM Compiler Infrastructure
// //
@ -7,8 +7,8 @@
// //
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
#ifndef ASMEXPR_H #ifndef LLVM_MC_MCEXPR_H
#define ASMEXPR_H #define LLVM_MC_MCEXPR_H
#include "llvm/Support/Casting.h" #include "llvm/Support/Casting.h"
#include "llvm/Support/DataTypes.h" #include "llvm/Support/DataTypes.h"
@ -18,11 +18,11 @@ class MCContext;
class MCSymbol; class MCSymbol;
class MCValue; class MCValue;
/// AsmExpr - Base class for the full range of assembler expressions which are /// MCExpr - Base class for the full range of assembler expressions which are
/// needed for parsing. /// needed for parsing.
class AsmExpr { class MCExpr {
public: public:
enum AsmExprKind { enum ExprKind {
Binary, ///< Binary expressions. Binary, ///< Binary expressions.
Constant, ///< Constant expressions. Constant, ///< Constant expressions.
SymbolRef, ///< References to labels and assigned expressions. SymbolRef, ///< References to labels and assigned expressions.
@ -30,15 +30,15 @@ public:
}; };
private: private:
AsmExprKind Kind; ExprKind Kind;
protected: protected:
AsmExpr(AsmExprKind _Kind) : Kind(_Kind) {} MCExpr(ExprKind _Kind) : Kind(_Kind) {}
public: public:
virtual ~AsmExpr(); virtual ~MCExpr();
AsmExprKind getKind() const { return Kind; } ExprKind getKind() const { return Kind; }
/// EvaluateAsAbsolute - Try to evaluate the expression to an absolute value. /// EvaluateAsAbsolute - Try to evaluate the expression to an absolute value.
/// ///
@ -53,48 +53,48 @@ public:
/// @result - True on success. /// @result - True on success.
bool EvaluateAsRelocatable(MCContext &Ctx, MCValue &Res) const; bool EvaluateAsRelocatable(MCContext &Ctx, MCValue &Res) const;
static bool classof(const AsmExpr *) { return true; } static bool classof(const MCExpr *) { return true; }
}; };
//// AsmConstantExpr - Represent a constant integer expression. //// MCConstantExpr - Represent a constant integer expression.
class AsmConstantExpr : public AsmExpr { class MCConstantExpr : public MCExpr {
int64_t Value; int64_t Value;
public: public:
AsmConstantExpr(int64_t _Value) MCConstantExpr(int64_t _Value)
: AsmExpr(AsmExpr::Constant), Value(_Value) {} : MCExpr(MCExpr::Constant), Value(_Value) {}
int64_t getValue() const { return Value; } int64_t getValue() const { return Value; }
static bool classof(const AsmExpr *E) { static bool classof(const MCExpr *E) {
return E->getKind() == AsmExpr::Constant; return E->getKind() == MCExpr::Constant;
} }
static bool classof(const AsmConstantExpr *) { return true; } static bool classof(const MCConstantExpr *) { return true; }
}; };
/// AsmSymbolRefExpr - Represent a reference to a symbol from inside an /// MCSymbolRefExpr - Represent a reference to a symbol from inside an
/// expression. /// expression.
/// ///
/// A symbol reference in an expression may be a use of a label, a use of an /// A symbol reference in an expression may be a use of a label, a use of an
/// assembler variable (defined constant), or constitute an implicit definition /// assembler variable (defined constant), or constitute an implicit definition
/// of the symbol as external. /// of the symbol as external.
class AsmSymbolRefExpr : public AsmExpr { class MCSymbolRefExpr : public MCExpr {
MCSymbol *Symbol; MCSymbol *Symbol;
public: public:
AsmSymbolRefExpr(MCSymbol *_Symbol) MCSymbolRefExpr(MCSymbol *_Symbol)
: AsmExpr(AsmExpr::SymbolRef), Symbol(_Symbol) {} : MCExpr(MCExpr::SymbolRef), Symbol(_Symbol) {}
MCSymbol *getSymbol() const { return Symbol; } MCSymbol *getSymbol() const { return Symbol; }
static bool classof(const AsmExpr *E) { static bool classof(const MCExpr *E) {
return E->getKind() == AsmExpr::SymbolRef; return E->getKind() == MCExpr::SymbolRef;
} }
static bool classof(const AsmSymbolRefExpr *) { return true; } static bool classof(const MCSymbolRefExpr *) { return true; }
}; };
/// AsmUnaryExpr - Unary assembler expressions. /// MCUnaryExpr - Unary assembler expressions.
class AsmUnaryExpr : public AsmExpr { class MCUnaryExpr : public MCExpr {
public: public:
enum Opcode { enum Opcode {
LNot, ///< Logical negation. LNot, ///< Logical negation.
@ -105,27 +105,27 @@ public:
private: private:
Opcode Op; Opcode Op;
AsmExpr *Expr; MCExpr *Expr;
public: public:
AsmUnaryExpr(Opcode _Op, AsmExpr *_Expr) MCUnaryExpr(Opcode _Op, MCExpr *_Expr)
: AsmExpr(AsmExpr::Unary), Op(_Op), Expr(_Expr) {} : MCExpr(MCExpr::Unary), Op(_Op), Expr(_Expr) {}
~AsmUnaryExpr() { ~MCUnaryExpr() {
delete Expr; delete Expr;
} }
Opcode getOpcode() const { return Op; } Opcode getOpcode() const { return Op; }
AsmExpr *getSubExpr() const { return Expr; } MCExpr *getSubExpr() const { return Expr; }
static bool classof(const AsmExpr *E) { static bool classof(const MCExpr *E) {
return E->getKind() == AsmExpr::Unary; return E->getKind() == MCExpr::Unary;
} }
static bool classof(const AsmUnaryExpr *) { return true; } static bool classof(const MCUnaryExpr *) { return true; }
}; };
/// AsmBinaryExpr - Binary assembler expressions. /// MCBinaryExpr - Binary assembler expressions.
class AsmBinaryExpr : public AsmExpr { class MCBinaryExpr : public MCExpr {
public: public:
enum Opcode { enum Opcode {
Add, ///< Addition. Add, ///< Addition.
@ -150,12 +150,12 @@ public:
private: private:
Opcode Op; Opcode Op;
AsmExpr *LHS, *RHS; MCExpr *LHS, *RHS;
public: public:
AsmBinaryExpr(Opcode _Op, AsmExpr *_LHS, AsmExpr *_RHS) MCBinaryExpr(Opcode _Op, MCExpr *_LHS, MCExpr *_RHS)
: AsmExpr(AsmExpr::Binary), Op(_Op), LHS(_LHS), RHS(_RHS) {} : MCExpr(MCExpr::Binary), Op(_Op), LHS(_LHS), RHS(_RHS) {}
~AsmBinaryExpr() { ~MCBinaryExpr() {
delete LHS; delete LHS;
delete RHS; delete RHS;
} }
@ -163,15 +163,15 @@ public:
Opcode getOpcode() const { return Op; } Opcode getOpcode() const { return Op; }
/// getLHS - Get the left-hand side expression of the binary operator. /// getLHS - Get the left-hand side expression of the binary operator.
AsmExpr *getLHS() const { return LHS; } MCExpr *getLHS() const { return LHS; }
/// getRHS - Get the right-hand side expression of the binary operator. /// getRHS - Get the right-hand side expression of the binary operator.
AsmExpr *getRHS() const { return RHS; } MCExpr *getRHS() const { return RHS; }
static bool classof(const AsmExpr *E) { static bool classof(const MCExpr *E) {
return E->getKind() == AsmExpr::Binary; return E->getKind() == MCExpr::Binary;
} }
static bool classof(const AsmBinaryExpr *) { return true; } static bool classof(const MCBinaryExpr *) { return true; }
}; };
} // end namespace llvm } // end namespace llvm

1
lib/MC/CMakeLists.txt
View File

@ -8,6 +8,7 @@ add_llvm_library(LLVMMC
MCAssembler.cpp MCAssembler.cpp
MCCodeEmitter.cpp MCCodeEmitter.cpp
MCContext.cpp MCContext.cpp
MCExpr.cpp
MCInst.cpp MCInst.cpp
MCMachOStreamer.cpp MCMachOStreamer.cpp
MCNullStreamer.cpp MCNullStreamer.cpp

66
tools/llvm-mc/AsmExpr.cpp → lib/MC/MCExpr.cpp
View File

@ -1,4 +1,4 @@
//===- AsmExpr.cpp - Assembly file expressions ----------------------------===// //===- MCExpr.cpp - Assembly Level Expression Implementation --------------===//
// //
// The LLVM Compiler Infrastructure // The LLVM Compiler Infrastructure
// //
@ -7,16 +7,16 @@
// //
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
#include "AsmExpr.h" #include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCContext.h" #include "llvm/MC/MCContext.h"
#include "llvm/MC/MCSymbol.h" #include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCValue.h" #include "llvm/MC/MCValue.h"
using namespace llvm; using namespace llvm;
AsmExpr::~AsmExpr() { MCExpr::~MCExpr() {
} }
bool AsmExpr::EvaluateAsAbsolute(MCContext &Ctx, int64_t &Res) const { bool MCExpr::EvaluateAsAbsolute(MCContext &Ctx, int64_t &Res) const {
MCValue Value; MCValue Value;
if (!EvaluateAsRelocatable(Ctx, Value) || !Value.isAbsolute()) if (!EvaluateAsRelocatable(Ctx, Value) || !Value.isAbsolute())
@ -48,17 +48,17 @@ static bool EvaluateSymbolicAdd(const MCValue &LHS, const MCSymbol *RHS_A,
return true; return true;
} }
bool AsmExpr::EvaluateAsRelocatable(MCContext &Ctx, MCValue &Res) const { bool MCExpr::EvaluateAsRelocatable(MCContext &Ctx, MCValue &Res) const {
switch (getKind()) { switch (getKind()) {
default: default:
assert(0 && "Invalid assembly expression kind!"); assert(0 && "Invalid assembly expression kind!");
case Constant: case Constant:
Res = MCValue::get(cast<AsmConstantExpr>(this)->getValue()); Res = MCValue::get(cast<MCConstantExpr>(this)->getValue());
return true; return true;
case SymbolRef: { case SymbolRef: {
MCSymbol *Sym = cast<AsmSymbolRefExpr>(this)->getSymbol(); MCSymbol *Sym = cast<MCSymbolRefExpr>(this)->getSymbol();
if (const MCValue *Value = Ctx.GetSymbolValue(Sym)) if (const MCValue *Value = Ctx.GetSymbolValue(Sym))
Res = *Value; Res = *Value;
else else
@ -67,31 +67,31 @@ bool AsmExpr::EvaluateAsRelocatable(MCContext &Ctx, MCValue &Res) const {
} }
case Unary: { case Unary: {
const AsmUnaryExpr *AUE = cast<AsmUnaryExpr>(this); const MCUnaryExpr *AUE = cast<MCUnaryExpr>(this);
MCValue Value; MCValue Value;
if (!AUE->getSubExpr()->EvaluateAsRelocatable(Ctx, Value)) if (!AUE->getSubExpr()->EvaluateAsRelocatable(Ctx, Value))
return false; return false;
switch (AUE->getOpcode()) { switch (AUE->getOpcode()) {
case AsmUnaryExpr::LNot: case MCUnaryExpr::LNot:
if (!Value.isAbsolute()) if (!Value.isAbsolute())
return false; return false;
Res = MCValue::get(!Value.getConstant()); Res = MCValue::get(!Value.getConstant());
break; break;
case AsmUnaryExpr::Minus: case MCUnaryExpr::Minus:
/// -(a - b + const) ==> (b - a - const) /// -(a - b + const) ==> (b - a - const)
if (Value.getSymA() && !Value.getSymB()) if (Value.getSymA() && !Value.getSymB())
return false; return false;
Res = MCValue::get(Value.getSymB(), Value.getSymA(), Res = MCValue::get(Value.getSymB(), Value.getSymA(),
-Value.getConstant()); -Value.getConstant());
break; break;
case AsmUnaryExpr::Not: case MCUnaryExpr::Not:
if (!Value.isAbsolute()) if (!Value.isAbsolute())
return false; return false;
Res = MCValue::get(~Value.getConstant()); Res = MCValue::get(~Value.getConstant());
break; break;
case AsmUnaryExpr::Plus: case MCUnaryExpr::Plus:
Res = Value; Res = Value;
break; break;
} }
@ -100,7 +100,7 @@ bool AsmExpr::EvaluateAsRelocatable(MCContext &Ctx, MCValue &Res) const {
} }
case Binary: { case Binary: {
const AsmBinaryExpr *ABE = cast<AsmBinaryExpr>(this); const MCBinaryExpr *ABE = cast<MCBinaryExpr>(this);
MCValue LHSValue, RHSValue; MCValue LHSValue, RHSValue;
if (!ABE->getLHS()->EvaluateAsRelocatable(Ctx, LHSValue) || if (!ABE->getLHS()->EvaluateAsRelocatable(Ctx, LHSValue) ||
@ -113,14 +113,14 @@ bool AsmExpr::EvaluateAsRelocatable(MCContext &Ctx, MCValue &Res) const {
switch (ABE->getOpcode()) { switch (ABE->getOpcode()) {
default: default:
return false; return false;
case AsmBinaryExpr::Sub: case MCBinaryExpr::Sub:
// Negate RHS and add. // Negate RHS and add.
return EvaluateSymbolicAdd(LHSValue, return EvaluateSymbolicAdd(LHSValue,
RHSValue.getSymB(), RHSValue.getSymA(), RHSValue.getSymB(), RHSValue.getSymA(),
-RHSValue.getConstant(), -RHSValue.getConstant(),
Res); Res);
case AsmBinaryExpr::Add: case MCBinaryExpr::Add:
return EvaluateSymbolicAdd(LHSValue, return EvaluateSymbolicAdd(LHSValue,
RHSValue.getSymA(), RHSValue.getSymB(), RHSValue.getSymA(), RHSValue.getSymB(),
RHSValue.getConstant(), RHSValue.getConstant(),
@ -134,24 +134,24 @@ bool AsmExpr::EvaluateAsRelocatable(MCContext &Ctx, MCValue &Res) const {
int64_t LHS = LHSValue.getConstant(), RHS = RHSValue.getConstant(); int64_t LHS = LHSValue.getConstant(), RHS = RHSValue.getConstant();
int64_t Result = 0; int64_t Result = 0;
switch (ABE->getOpcode()) { switch (ABE->getOpcode()) {
case AsmBinaryExpr::Add: Result = LHS + RHS; break; case MCBinaryExpr::Add: Result = LHS + RHS; break;
case AsmBinaryExpr::And: Result = LHS & RHS; break; case MCBinaryExpr::And: Result = LHS & RHS; break;
case AsmBinaryExpr::Div: Result = LHS / RHS; break; case MCBinaryExpr::Div: Result = LHS / RHS; break;
case AsmBinaryExpr::EQ: Result = LHS == RHS; break; case MCBinaryExpr::EQ: Result = LHS == RHS; break;
case AsmBinaryExpr::GT: Result = LHS > RHS; break; case MCBinaryExpr::GT: Result = LHS > RHS; break;
case AsmBinaryExpr::GTE: Result = LHS >= RHS; break; case MCBinaryExpr::GTE: Result = LHS >= RHS; break;
case AsmBinaryExpr::LAnd: Result = LHS && RHS; break; case MCBinaryExpr::LAnd: Result = LHS && RHS; break;
case AsmBinaryExpr::LOr: Result = LHS || RHS; break; case MCBinaryExpr::LOr: Result = LHS || RHS; break;
case AsmBinaryExpr::LT: Result = LHS < RHS; break; case MCBinaryExpr::LT: Result = LHS < RHS; break;
case AsmBinaryExpr::LTE: Result = LHS <= RHS; break; case MCBinaryExpr::LTE: Result = LHS <= RHS; break;
case AsmBinaryExpr::Mod: Result = LHS % RHS; break; case MCBinaryExpr::Mod: Result = LHS % RHS; break;
case AsmBinaryExpr::Mul: Result = LHS * RHS; break; case MCBinaryExpr::Mul: Result = LHS * RHS; break;
case AsmBinaryExpr::NE: Result = LHS != RHS; break; case MCBinaryExpr::NE: Result = LHS != RHS; break;
case AsmBinaryExpr::Or: Result = LHS | RHS; break; case MCBinaryExpr::Or: Result = LHS | RHS; break;
case AsmBinaryExpr::Shl: Result = LHS << RHS; break; case MCBinaryExpr::Shl: Result = LHS << RHS; break;
case AsmBinaryExpr::Shr: Result = LHS >> RHS; break; case MCBinaryExpr::Shr: Result = LHS >> RHS; break;
case AsmBinaryExpr::Sub: Result = LHS - RHS; break; case MCBinaryExpr::Sub: Result = LHS - RHS; break;
case AsmBinaryExpr::Xor: Result = LHS ^ RHS; break; case MCBinaryExpr::Xor: Result = LHS ^ RHS; break;
} }
Res = MCValue::get(Result); Res = MCValue::get(Result);

74
tools/llvm-mc/AsmParser.cpp
View File

@ -13,10 +13,10 @@
#include "AsmParser.h" #include "AsmParser.h"
#include "AsmExpr.h"
#include "llvm/ADT/SmallString.h" #include "llvm/ADT/SmallString.h"
#include "llvm/ADT/Twine.h" #include "llvm/ADT/Twine.h"
#include "llvm/MC/MCContext.h" #include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h" #include "llvm/MC/MCInst.h"
#include "llvm/MC/MCSectionMachO.h" #include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCStreamer.h" #include "llvm/MC/MCStreamer.h"
@ -173,7 +173,7 @@ void AsmParser::EatToEndOfStatement() {
/// ///
/// parenexpr ::= expr) /// parenexpr ::= expr)
/// ///
bool AsmParser::ParseParenExpr(AsmExpr *&Res) { bool AsmParser::ParseParenExpr(MCExpr *&Res) {
if (ParseExpression(Res)) return true; if (ParseExpression(Res)) return true;
if (Lexer.isNot(AsmToken::RParen)) if (Lexer.isNot(AsmToken::RParen))
return TokError("expected ')' in parentheses expression"); return TokError("expected ')' in parentheses expression");
@ -197,7 +197,7 @@ MCSymbol *AsmParser::CreateSymbol(StringRef Name) {
/// primaryexpr ::= symbol /// primaryexpr ::= symbol
/// primaryexpr ::= number /// primaryexpr ::= number
/// primaryexpr ::= ~,+,- primaryexpr /// primaryexpr ::= ~,+,- primaryexpr
bool AsmParser::ParsePrimaryExpr(AsmExpr *&Res) { bool AsmParser::ParsePrimaryExpr(MCExpr *&Res) {
switch (Lexer.getKind()) { switch (Lexer.getKind()) {
default: default:
return TokError("unknown token in expression"); return TokError("unknown token in expression");
@ -205,7 +205,7 @@ bool AsmParser::ParsePrimaryExpr(AsmExpr *&Res) {
Lexer.Lex(); // Eat the operator. Lexer.Lex(); // Eat the operator.
if (ParsePrimaryExpr(Res)) if (ParsePrimaryExpr(Res))
return true; return true;
Res = new AsmUnaryExpr(AsmUnaryExpr::LNot, Res); Res = new MCUnaryExpr(MCUnaryExpr::LNot, Res);
return false; return false;
case AsmToken::String: case AsmToken::String:
case AsmToken::Identifier: { case AsmToken::Identifier: {
@ -213,12 +213,12 @@ bool AsmParser::ParsePrimaryExpr(AsmExpr *&Res) {
// handle things like LFOO+4. // handle things like LFOO+4.
MCSymbol *Sym = CreateSymbol(Lexer.getTok().getIdentifier()); MCSymbol *Sym = CreateSymbol(Lexer.getTok().getIdentifier());
Res = new AsmSymbolRefExpr(Sym); Res = new MCSymbolRefExpr(Sym);
Lexer.Lex(); // Eat identifier. Lexer.Lex(); // Eat identifier.
return false; return false;
} }
case AsmToken::Integer: case AsmToken::Integer:
Res = new AsmConstantExpr(Lexer.getTok().getIntVal()); Res = new MCConstantExpr(Lexer.getTok().getIntVal());
Lexer.Lex(); // Eat token. Lexer.Lex(); // Eat token.
return false; return false;
case AsmToken::LParen: case AsmToken::LParen:
@ -228,19 +228,19 @@ bool AsmParser::ParsePrimaryExpr(AsmExpr *&Res) {
Lexer.Lex(); // Eat the operator. Lexer.Lex(); // Eat the operator.
if (ParsePrimaryExpr(Res)) if (ParsePrimaryExpr(Res))
return true; return true;
Res = new AsmUnaryExpr(AsmUnaryExpr::Minus, Res); Res = new MCUnaryExpr(MCUnaryExpr::Minus, Res);
return false; return false;
case AsmToken::Plus: case AsmToken::Plus:
Lexer.Lex(); // Eat the operator. Lexer.Lex(); // Eat the operator.
if (ParsePrimaryExpr(Res)) if (ParsePrimaryExpr(Res))
return true; return true;
Res = new AsmUnaryExpr(AsmUnaryExpr::Plus, Res); Res = new MCUnaryExpr(MCUnaryExpr::Plus, Res);
return false; return false;
case AsmToken::Tilde: case AsmToken::Tilde:
Lexer.Lex(); // Eat the operator. Lexer.Lex(); // Eat the operator.
if (ParsePrimaryExpr(Res)) if (ParsePrimaryExpr(Res))
return true; return true;
Res = new AsmUnaryExpr(AsmUnaryExpr::Not, Res); Res = new MCUnaryExpr(MCUnaryExpr::Not, Res);
return false; return false;
} }
} }
@ -252,14 +252,14 @@ bool AsmParser::ParsePrimaryExpr(AsmExpr *&Res) {
/// expr ::= expr *,/,%,<<,>> expr -> highest. /// expr ::= expr *,/,%,<<,>> expr -> highest.
/// expr ::= primaryexpr /// expr ::= primaryexpr
/// ///
bool AsmParser::ParseExpression(AsmExpr *&Res) { bool AsmParser::ParseExpression(MCExpr *&Res) {
Res = 0; Res = 0;
return ParsePrimaryExpr(Res) || return ParsePrimaryExpr(Res) ||
ParseBinOpRHS(1, Res); ParseBinOpRHS(1, Res);
} }
bool AsmParser::ParseAbsoluteExpression(int64_t &Res) { bool AsmParser::ParseAbsoluteExpression(int64_t &Res) {
AsmExpr *Expr; MCExpr *Expr;
SMLoc StartLoc = Lexer.getLoc(); SMLoc StartLoc = Lexer.getLoc();
if (ParseExpression(Expr)) if (ParseExpression(Expr))
@ -272,7 +272,7 @@ bool AsmParser::ParseAbsoluteExpression(int64_t &Res) {
} }
bool AsmParser::ParseRelocatableExpression(MCValue &Res) { bool AsmParser::ParseRelocatableExpression(MCValue &Res) {
AsmExpr *Expr; MCExpr *Expr;
SMLoc StartLoc = Lexer.getLoc(); SMLoc StartLoc = Lexer.getLoc();
if (ParseExpression(Expr)) if (ParseExpression(Expr))
@ -285,7 +285,7 @@ bool AsmParser::ParseRelocatableExpression(MCValue &Res) {
} }
bool AsmParser::ParseParenRelocatableExpression(MCValue &Res) { bool AsmParser::ParseParenRelocatableExpression(MCValue &Res) {
AsmExpr *Expr; MCExpr *Expr;
SMLoc StartLoc = Lexer.getLoc(); SMLoc StartLoc = Lexer.getLoc();
if (ParseParenExpr(Expr)) if (ParseParenExpr(Expr))
@ -298,73 +298,73 @@ bool AsmParser::ParseParenRelocatableExpression(MCValue &Res) {
} }
static unsigned getBinOpPrecedence(AsmToken::TokenKind K, static unsigned getBinOpPrecedence(AsmToken::TokenKind K,
AsmBinaryExpr::Opcode &Kind) { MCBinaryExpr::Opcode &Kind) {
switch (K) { switch (K) {
default: return 0; // not a binop. default: return 0; // not a binop.
// Lowest Precedence: &&, || // Lowest Precedence: &&, ||
case AsmToken::AmpAmp: case AsmToken::AmpAmp:
Kind = AsmBinaryExpr::LAnd; Kind = MCBinaryExpr::LAnd;
return 1; return 1;
case AsmToken::PipePipe: case AsmToken::PipePipe:
Kind = AsmBinaryExpr::LOr; Kind = MCBinaryExpr::LOr;
return 1; return 1;
// Low Precedence: +, -, ==, !=, <>, <, <=, >, >= // Low Precedence: +, -, ==, !=, <>, <, <=, >, >=
case AsmToken::Plus: case AsmToken::Plus:
Kind = AsmBinaryExpr::Add; Kind = MCBinaryExpr::Add;
return 2; return 2;
case AsmToken::Minus: case AsmToken::Minus:
Kind = AsmBinaryExpr::Sub; Kind = MCBinaryExpr::Sub;
return 2; return 2;
case AsmToken::EqualEqual: case AsmToken::EqualEqual:
Kind = AsmBinaryExpr::EQ; Kind = MCBinaryExpr::EQ;
return 2; return 2;
case AsmToken::ExclaimEqual: case AsmToken::ExclaimEqual:
case AsmToken::LessGreater: case AsmToken::LessGreater:
Kind = AsmBinaryExpr::NE; Kind = MCBinaryExpr::NE;
return 2; return 2;
case AsmToken::Less: case AsmToken::Less:
Kind = AsmBinaryExpr::LT; Kind = MCBinaryExpr::LT;
return 2; return 2;
case AsmToken::LessEqual: case AsmToken::LessEqual:
Kind = AsmBinaryExpr::LTE; Kind = MCBinaryExpr::LTE;
return 2; return 2;
case AsmToken::Greater: case AsmToken::Greater:
Kind = AsmBinaryExpr::GT; Kind = MCBinaryExpr::GT;
return 2; return 2;
case AsmToken::GreaterEqual: case AsmToken::GreaterEqual:
Kind = AsmBinaryExpr::GTE; Kind = MCBinaryExpr::GTE;
return 2; return 2;
// Intermediate Precedence: |, &, ^ // Intermediate Precedence: |, &, ^
// //
// FIXME: gas seems to support '!' as an infix operator? // FIXME: gas seems to support '!' as an infix operator?
case AsmToken::Pipe: case AsmToken::Pipe:
Kind = AsmBinaryExpr::Or; Kind = MCBinaryExpr::Or;
return 3; return 3;
case AsmToken::Caret: case AsmToken::Caret:
Kind = AsmBinaryExpr::Xor; Kind = MCBinaryExpr::Xor;
return 3; return 3;
case AsmToken::Amp: case AsmToken::Amp:
Kind = AsmBinaryExpr::And; Kind = MCBinaryExpr::And;
return 3; return 3;
// Highest Precedence: *, /, %, <<, >> // Highest Precedence: *, /, %, <<, >>
case AsmToken::Star: case AsmToken::Star:
Kind = AsmBinaryExpr::Mul; Kind = MCBinaryExpr::Mul;
return 4; return 4;
case AsmToken::Slash: case AsmToken::Slash:
Kind = AsmBinaryExpr::Div; Kind = MCBinaryExpr::Div;
return 4; return 4;
case AsmToken::Percent: case AsmToken::Percent:
Kind = AsmBinaryExpr::Mod; Kind = MCBinaryExpr::Mod;
return 4; return 4;
case AsmToken::LessLess: case AsmToken::LessLess:
Kind = AsmBinaryExpr::Shl; Kind = MCBinaryExpr::Shl;
return 4; return 4;
case AsmToken::GreaterGreater: case AsmToken::GreaterGreater:
Kind = AsmBinaryExpr::Shr; Kind = MCBinaryExpr::Shr;
return 4; return 4;
} }
} }
@ -372,9 +372,9 @@ static unsigned getBinOpPrecedence(AsmToken::TokenKind K,
/// ParseBinOpRHS - Parse all binary operators with precedence >= 'Precedence'. /// ParseBinOpRHS - Parse all binary operators with precedence >= 'Precedence'.
/// Res contains the LHS of the expression on input. /// Res contains the LHS of the expression on input.
bool AsmParser::ParseBinOpRHS(unsigned Precedence, AsmExpr *&Res) { bool AsmParser::ParseBinOpRHS(unsigned Precedence, MCExpr *&Res) {
while (1) { while (1) {
AsmBinaryExpr::Opcode Kind = AsmBinaryExpr::Add; MCBinaryExpr::Opcode Kind = MCBinaryExpr::Add;
unsigned TokPrec = getBinOpPrecedence(Lexer.getKind(), Kind); unsigned TokPrec = getBinOpPrecedence(Lexer.getKind(), Kind);
// If the next token is lower precedence than we are allowed to eat, return // If the next token is lower precedence than we are allowed to eat, return
@ -385,19 +385,19 @@ bool AsmParser::ParseBinOpRHS(unsigned Precedence, AsmExpr *&Res) {
Lexer.Lex(); Lexer.Lex();
// Eat the next primary expression. // Eat the next primary expression.
AsmExpr *RHS; MCExpr *RHS;
if (ParsePrimaryExpr(RHS)) return true; if (ParsePrimaryExpr(RHS)) return true;
// If BinOp binds less tightly with RHS than the operator after RHS, let // If BinOp binds less tightly with RHS than the operator after RHS, let
// the pending operator take RHS as its LHS. // the pending operator take RHS as its LHS.
AsmBinaryExpr::Opcode Dummy; MCBinaryExpr::Opcode Dummy;
unsigned NextTokPrec = getBinOpPrecedence(Lexer.getKind(), Dummy); unsigned NextTokPrec = getBinOpPrecedence(Lexer.getKind(), Dummy);
if (TokPrec < NextTokPrec) { if (TokPrec < NextTokPrec) {
if (ParseBinOpRHS(Precedence+1, RHS)) return true; if (ParseBinOpRHS(Precedence+1, RHS)) return true;
} }
// Merge LHS and RHS according to operator. // Merge LHS and RHS according to operator.
Res = new AsmBinaryExpr(Kind, Res, RHS); Res = new MCBinaryExpr(Kind, Res, RHS);
} }
} }

10
tools/llvm-mc/AsmParser.h
View File

@ -22,9 +22,9 @@
#include "llvm/MC/MCStreamer.h" #include "llvm/MC/MCStreamer.h"
namespace llvm { namespace llvm {
class AsmExpr;
class AsmCond; class AsmCond;
class MCContext; class MCContext;
class MCExpr;
class MCInst; class MCInst;
class MCStreamer; class MCStreamer;
class MCValue; class MCValue;
@ -66,7 +66,7 @@ public:
virtual bool Error(SMLoc L, const Twine &Msg); virtual bool Error(SMLoc L, const Twine &Msg);
virtual bool ParseExpression(AsmExpr *&Res); virtual bool ParseExpression(MCExpr *&Res);
virtual bool ParseAbsoluteExpression(int64_t &Res); virtual bool ParseAbsoluteExpression(int64_t &Res);
@ -104,9 +104,9 @@ private:
/// @see ParseRelocatableExpression, ParseParenExpr. /// @see ParseRelocatableExpression, ParseParenExpr.
bool ParseParenRelocatableExpression(MCValue &Res); bool ParseParenRelocatableExpression(MCValue &Res);
bool ParsePrimaryExpr(AsmExpr *&Res); bool ParsePrimaryExpr(MCExpr *&Res);
bool ParseBinOpRHS(unsigned Precedence, AsmExpr *&Res); bool ParseBinOpRHS(unsigned Precedence, MCExpr *&Res);
bool ParseParenExpr(AsmExpr *&Res); bool ParseParenExpr(MCExpr *&Res);
/// ParseIdentifier - Parse an identifier or string (as a quoted identifier) /// ParseIdentifier - Parse an identifier or string (as a quoted identifier)
/// and set \arg Res to the identifier contents. /// and set \arg Res to the identifier contents.

1
tools/llvm-mc/CMakeLists.txt
View File

@ -2,7 +2,6 @@ set(LLVM_LINK_COMPONENTS ${LLVM_TARGETS_TO_BUILD} support MC)
add_llvm_tool(llvm-mc add_llvm_tool(llvm-mc
llvm-mc.cpp llvm-mc.cpp
AsmExpr.cpp
AsmLexer.cpp AsmLexer.cpp
AsmParser.cpp AsmParser.cpp
) )