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Profiling problems in the main function #114

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11 changes: 11 additions & 0 deletions llvm_passes/core/Utils.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -51,6 +51,17 @@ Instruction *getTermInstofFunction(Function *func) {
BasicBlock &termbb = func->back();
Instruction *ret = termbb.getTerminator();

// if the instruction in the last BB is not return/unreachable instruction,
// iterate through the main function to find the return/unreachable instruction
if( isa<ReturnInst>(ret) || isa<UnreachableInst>(ret) ){}
else{
for( inst_iterator f_it = inst_begin(func); f_it != inst_end(func); ++f_it ){
if( isa<ReturnInst>(&(*f_it))){
ret = &(*f_it);
}
}
}

assert(isa<ReturnInst>(ret) || isa<UnreachableInst>(ret) &&
"Last instruction is not return or exit() instruction");
return ret;
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