Author: ddunbar
Date: Wed Jul 23 20:08:37 2008
New Revision: 53974
URL: http://llvm.org/viewvc/llvm-project?rev=53974&view=rev
Log:
Add Expr::getIntegerConstantExprValue helper method
- For getting an APSInt from a known integer constant Expr.
- TODO: Many users of Expr::isIntegerConstantExpr in codegen should
probably be using this instead...
Modified:
cfe/trunk/include/clang/AST/Expr.h
Modified: cfe/trunk/include/clang/AST/Expr.h
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/Expr.h?rev=53974&r1=53973&r2=53974&view=diff
==============================================================================
--- cfe/trunk/include/clang/AST/Expr.h (original)
+++ cfe/trunk/include/clang/AST/Expr.h Wed Jul 23 20:08:37 2008
@@ -95,6 +95,16 @@
bool isNullPointerConstant(ASTContext &Ctx) const;
+ /// getIntegerConstantExprValue() - Return the value of an integer
+ /// constant expression. The expression must be a valid integer
+ /// constant expression as determined by isIntegerConstantExpr.
+ llvm::APSInt getIntegerConstantExprValue(ASTContext &Ctx) const {
+ llvm::APSInt X(32);
+ bool success = isIntegerConstantExpr(X, Ctx);
+ assert(success && "Illegal argument to getIntegerConstantExpr");
+ return X;
+ }
+
/// isIntegerConstantExpr - Return true if this expression is a valid integer
/// constant expression, and, if so, return its value in Result. If not a
/// valid i-c-e, return false and fill in Loc (if specified) with the
location
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