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-rw-r--r--lib/ExecutionEngine/Interpreter/Interpreter.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/lib/ExecutionEngine/Interpreter/Interpreter.h b/lib/ExecutionEngine/Interpreter/Interpreter.h
index c62249b..3007b0a 100644
--- a/lib/ExecutionEngine/Interpreter/Interpreter.h
+++ b/lib/ExecutionEngine/Interpreter/Interpreter.h
@@ -231,8 +231,20 @@ private: // Helper functions
GenericValue executeCastOperation(Instruction::CastOps opcode, Value *SrcVal,
const Type *Ty, ExecutionContext &SF);
void popStackAndReturnValueToCaller(const Type *RetTy, GenericValue Result);
+
};
+inline void maskToBitWidth(GenericValue& GV, unsigned BitWidth) {
+ uint64_t BitMask = (1ull << BitWidth) - 1;
+ if (BitWidth <= 8)
+ GV.Int8Val &= BitMask;
+ else if (BitWidth <= 16)
+ GV.Int16Val &= BitMask;
+ else if (BitWidth <= 32)
+ GV.Int32Val &= BitMask;
+ else
+ GV.Int64Val &= BitMask;
+}
} // End llvm namespace
#endif