As an invariant, BasicBlocks cannot be empty when passed to a transform.
This is not the case for MachineBasicBlocks and the Sink pass was ported
from the MachineSink pass which would explain the check's existence.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251057
91177308-0d34-0410-b5e6-
96231b3b80d8
bool Sinking::ProcessBlock(BasicBlock &BB) {
// Can't sink anything out of a block that has less than two successors.
- if (BB.getTerminator()->getNumSuccessors() <= 1 || BB.empty()) return false;
+ if (BB.getTerminator()->getNumSuccessors() <= 1) return false;
// Don't bother sinking code out of unreachable blocks. In addition to being
// unprofitable, it can also lead to infinite looping, because in an