diff options
Diffstat (limited to 'lib/ExecutionEngine/Interpreter/Execution.cpp')
| -rw-r--r-- | lib/ExecutionEngine/Interpreter/Execution.cpp | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/lib/ExecutionEngine/Interpreter/Execution.cpp b/lib/ExecutionEngine/Interpreter/Execution.cpp index 872a40b6ae..f10360903f 100644 --- a/lib/ExecutionEngine/Interpreter/Execution.cpp +++ b/lib/ExecutionEngine/Interpreter/Execution.cpp @@ -927,7 +927,11 @@ void Interpreter::visitShl(BinaryOperator &I) { GenericValue Src1 = getOperandValue(I.getOperand(0), SF); GenericValue Src2 = getOperandValue(I.getOperand(1), SF); GenericValue Dest; - Dest.IntVal = Src1.IntVal.shl(Src2.IntVal.getZExtValue()); + if (Src2.IntVal.getZExtValue() < Src1.IntVal.getBitWidth()) + Dest.IntVal = Src1.IntVal.shl(Src2.IntVal.getZExtValue()); + else + Dest.IntVal = Src1.IntVal; + SetValue(&I, Dest, SF); } @@ -936,7 +940,11 @@ void Interpreter::visitLShr(BinaryOperator &I) { GenericValue Src1 = getOperandValue(I.getOperand(0), SF); GenericValue Src2 = getOperandValue(I.getOperand(1), SF); GenericValue Dest; - Dest.IntVal = Src1.IntVal.lshr(Src2.IntVal.getZExtValue()); + if (Src2.IntVal.getZExtValue() < Src1.IntVal.getBitWidth()) + Dest.IntVal = Src1.IntVal.lshr(Src2.IntVal.getZExtValue()); + else + Dest.IntVal = Src1.IntVal; + SetValue(&I, Dest, SF); } @@ -944,8 +952,12 @@ void Interpreter::visitAShr(BinaryOperator &I) { ExecutionContext &SF = ECStack.back(); GenericValue Src1 = getOperandValue(I.getOperand(0), SF); GenericValue Src2 = getOperandValue(I.getOperand(1), SF); - GenericValue Dest; - Dest.IntVal = Src1.IntVal.ashr(Src2.IntVal.getZExtValue()); + GenericValue Dest; + if (Src2.IntVal.getZExtValue() < Src1.IntVal.getBitWidth()) + Dest.IntVal = Src1.IntVal.ashr(Src2.IntVal.getZExtValue()); + else + Dest.IntVal = Src1.IntVal; + SetValue(&I, Dest, SF); } |