// maybeImplicitBranch creates a branch from the current position to the
// specified basic block, if and only if the current basic block's last
// instruction is not a terminator.
//
// If dest is nil, then branch to the next basic block, if any.
func (c *compiler) maybeImplicitBranch(dest llvm.BasicBlock) {
currBlock := c.builder.GetInsertBlock()
if in := currBlock.LastInstruction(); in.IsNil() || in.IsATerminatorInst().IsNil() {
if dest.IsNil() {
dest = llvm.NextBasicBlock(currBlock)
if !dest.IsNil() {
c.builder.CreateBr(dest)
}
} else {
c.builder.CreateBr(dest)
}
}
}
