[cfe-commits] r39618 - /cfe/cfe/trunk/AST/Expr.cpp

[clattner at cs.uiuc.edu]

Author: clattner
Date: Wed Jul 11 11:46:18 2007
New Revision: 39618

URL: http://llvm.org/viewvc/llvm-project?rev=39618&view=rev
Log:
fix assertion on out-of-range shift

Modified:
    cfe/cfe/trunk/AST/Expr.cpp

Modified: cfe/cfe/trunk/AST/Expr.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/cfe/trunk/AST/Expr.cpp?rev=39618&r1=39617&r2=39618&view=diff

==============================================================================
--- cfe/cfe/trunk/AST/Expr.cpp (original)
+++ cfe/cfe/trunk/AST/Expr.cpp Wed Jul 11 11:46:18 2007
@@ -346,8 +346,12 @@
       break;
     case BinaryOperator::Add: Result += RHS; break;
     case BinaryOperator::Sub: Result -= RHS; break;
-    case BinaryOperator::Shl: Result <<= RHS.getLimitedValue(); break;
-    case BinaryOperator::Shr: Result >>= RHS.getLimitedValue(); break;
+    case BinaryOperator::Shl:
+      Result <<= RHS.getLimitedValue(Result.getBitWidth()-1);
+      break;
+    case BinaryOperator::Shr:
+      Result >>= RHS.getLimitedValue(Result.getBitWidth()-1);
+      break;
     case BinaryOperator::LT:  Result = Result < RHS; break;
     case BinaryOperator::GT:  Result = Result > RHS; break;
     case BinaryOperator::LE:  Result = Result <= RHS; break;