MC: Improve expression parsing and implement evaluation of absolute expressions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74448 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-mc/AsmParser.h b/tools/llvm-mc/AsmParser.h
index da256c2..326d0e7 100644
--- a/tools/llvm-mc/AsmParser.h
+++ b/tools/llvm-mc/AsmParser.h
@@ -17,6 +17,7 @@
#include "AsmLexer.h"
namespace llvm {
+class AsmExpr;
class MCContext;
class MCInst;
class MCStreamer;
@@ -44,10 +45,24 @@
void EatToEndOfStatement();
bool ParseAssignment(const char *Name, bool IsDotSet);
- bool ParseExpression(int64_t &Res);
- bool ParsePrimaryExpr(int64_t &Res);
- bool ParseBinOpRHS(unsigned Precedence, int64_t &Res);
- bool ParseParenExpr(int64_t &Res);
+
+ /// ParseExpression - Parse a general assembly expression.
+ ///
+ /// @param Res - The resulting expression. The pointer value is null on error.
+ /// @result - False on success.
+ bool ParseExpression(AsmExpr *&Res);
+
+ /// ParseAbsoluteExpr - Parse an expression which must evaluate to an absolute
+ /// value.
+ ///
+ /// @param Res - The value of the absolute expression. The result is undefined
+ /// on error.
+ /// @result - False on success.
+ bool ParseAbsoluteExpression(int64_t &Res);
+
+ bool ParsePrimaryExpr(AsmExpr *&Res);
+ bool ParseBinOpRHS(unsigned Precedence, AsmExpr *&Res);
+ bool ParseParenExpr(AsmExpr *&Res);
// X86 specific.
bool ParseX86InstOperands(MCInst &Inst);