diff options
Diffstat (limited to 'include/clang/AST/Expr.h')
| -rw-r--r-- | include/clang/AST/Expr.h | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/include/clang/AST/Expr.h b/include/clang/AST/Expr.h index 3475562337..882124bfdd 100644 --- a/include/clang/AST/Expr.h +++ b/include/clang/AST/Expr.h @@ -453,9 +453,14 @@ public: /// EvaluateAsBooleanCondition - Return true if this is a constant /// which we we can fold and convert to a boolean condition using - /// any crazy technique that we want to. + /// any crazy technique that we want to, even if the expression has + /// side-effects. bool EvaluateAsBooleanCondition(bool &Result, const ASTContext &Ctx) const; + /// EvaluateAsInt - Return true if this is a constant which we can fold and + /// convert to an integer using any crazy technique that we want to. + bool EvaluateAsInt(llvm::APSInt &Result, const ASTContext &Ctx) const; + /// isEvaluatable - Call Evaluate to see if this expression can be constant /// folded, but discard the result. bool isEvaluatable(const ASTContext &Ctx) const; @@ -466,9 +471,9 @@ public: /// variable read. bool HasSideEffects(const ASTContext &Ctx) const; - /// EvaluateAsInt - Call Evaluate and return the folded integer. This + /// EvaluateKnownConstInt - Call Evaluate and return the folded integer. This /// must be called on an expression that constant folds to an integer. - llvm::APSInt EvaluateAsInt(const ASTContext &Ctx) const; + llvm::APSInt EvaluateKnownConstInt(const ASTContext &Ctx) const; /// EvaluateAsLValue - Evaluate an expression to see if it's a lvalue /// with link time known address. @@ -3098,7 +3103,7 @@ public: unsigned getShuffleMaskIdx(ASTContext &Ctx, unsigned N) { assert((N < NumExprs - 2) && "Shuffle idx out of range!"); - return getExpr(N+2)->EvaluateAsInt(Ctx).getZExtValue(); + return getExpr(N+2)->EvaluateKnownConstInt(Ctx).getZExtValue(); } // Iterators |