#include <stdio.h>
int main() {
printf("hello world\n");
return 0;
}
“$ llvm-gcc hello.c -o hello”
“$ llc -march=arm hello.bc -o hello.arm" made error as follows:
llc: ARMISelDAGToDAG.cpp:73: llvm::SDOperand LowerCALL(llvm::SDOperand, llvm::SelectionDAG&): Assertion `isVarArg == false && "VarArg not supported"' failed.
llc((anonymous namespace)::PrintStackTrace()+0x15)[0x850437d]
llc((anonymous namespace)::SignalHandler(int)+0x139)[0x8504645]
Aborted
But, my fellow taught me this kind of error can be fixed by not using printf( );
So I changed the code like this:
#include <stdio.h>
int main() {
int i = 0;
i++;
return 0;
}
And then I can make LLVM ARM code emit the ARM text assembly code.
Anyway, thank you, LLVM guys.
Seung Jae Lee