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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>Hi,<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>My application generates some LLVM assembly code which I then convert to IR code using ParseAssemblyString. If I have the following LLVM assembly code:<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> define double @test() {<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> ret double 1.230000e+02<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> }<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>then, using ExecutionEngine::runFunction, I get a GenericValue return value which DoubleVal property is indeed equal to 123. So, all is fine there. However, if I have the following LLVM assembly code:<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> define void @test(double* %data) {<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> %1 = getelementptr inbounds double* %data, i64 1<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> store double 1.230000e+02, double* %1, align 8<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> %2 = getelementptr inbounds double* %data, i64 3<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> store double 1.230000e+02, double* %2, align 8<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> ret void<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> }<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>then, I thought I could declare an array of doubles and pass it to ExecutionEngine::runFunction as follows:<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> double data[4];<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> data[0] = 100;<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> data[1] = 101;<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> data[2] = 102;<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> data[3] = 103;<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> std::vector<llvm::GenericValue> args;<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> args.push_back(llvm::GenericValue(data));<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> executionEngine->runFunction(function, args);<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>As expected, data[1] and data[3] get updated, but… not to 123 but to 6.22870535974643e-317 (!!). I am still relatively new to LLVM so I wouldn’t exclude the fact that I might have done something wrong while trying to pass my data array to my function…?<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Anyway, any help would be much appreciated…<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Cheers, Alan.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>PS: I have tried the getPointerToFunction(), but it just crashes my application…!?<o:p></o:p></span></p></div></body></html>