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Add an inline helper function that masks a GenericValue to a specified
bit width. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33325 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -231,8 +231,20 @@ private: // Helper functions
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GenericValue executeCastOperation(Instruction::CastOps opcode, Value *SrcVal,
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const Type *Ty, ExecutionContext &SF);
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void popStackAndReturnValueToCaller(const Type *RetTy, GenericValue Result);
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};
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inline void maskToBitWidth(GenericValue& GV, unsigned BitWidth) {
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uint64_t BitMask = (1ull << BitWidth) - 1;
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if (BitWidth <= 8)
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GV.Int8Val &= BitMask;
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else if (BitWidth <= 16)
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GV.Int16Val &= BitMask;
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else if (BitWidth <= 32)
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GV.Int32Val &= BitMask;
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else
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GV.Int64Val &= BitMask;
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}
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} // End llvm namespace
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#endif
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