public Location getPreviousLocation(Location loc) {
InstructionHandle handle = loc.getHandle();
BasicBlock basicBlock = loc.getBasicBlock();
if (basicBlock.getFirstInstruction().equals(handle)) {
BasicBlock prevBlock = basicBlock;
while (true) {
prevBlock = getPredecessorWithEdgeType(prevBlock, EdgeTypes.FALL_THROUGH_EDGE);
if (prevBlock == null) {
return loc;
}
handle = prevBlock.getLastInstruction();
if (handle != null) {
return new Location(handle, prevBlock);
}
}
} else {
handle = handle.getPrev();
return new Location(handle, basicBlock);
}
}
