LLVMValueRef LLVMGetNull(LLVMTypeRef Ty); /* all zeroes */
LLVMValueRef LLVMGetAllOnes(LLVMTypeRef Ty); /* only for int/vector */
LLVMValueRef LLVMGetUndef(LLVMTypeRef Ty);
+int LLVMIsConstant(LLVMValueRef Val);
int LLVMIsNull(LLVMValueRef Val);
+int LLVMIsUndef(LLVMValueRef Val);
/* Operations on scalar constants */
LLVMValueRef LLVMGetIntConstant(LLVMTypeRef IntTy, unsigned long long N,