search for: lbb1_

...//add dummy instruction to overflow block BuildMI(MF.overflowBlock, DL, TII.get(X86::RET)); The problem is that the block doesn't appear in generate code if the code starts with more than one basic block. I get x86 code that looks something like this: _main: ... jae "LBB1_-1" ... There is no label created "LBB1_-1" and the block containing the ret instruction is missing. If I attempt to do an insertion operation, assuming it doesn't insert at the end() of the machine function, the code in MF.overflowBlock replaces the code in the block that...