+/// Test whether Pred has any terminators explicitly branching to MBB, as
+/// opposed to falling through. Note that it's possible (eg. in unoptimized
+/// code) for a branch instruction to both branch to a block and fallthrough
+/// to it, so we check the actual branch operands to see if there are any
+/// explicit mentions.
+static bool ExplicitlyBranchesTo(MachineBasicBlock *Pred, MachineBasicBlock *MBB) {
+ for (MachineInstr &MI : Pred->terminators())
+ for (MachineOperand &MO : MI.explicit_operands())
+ if (MO.isMBB() && MO.getMBB() == MBB)
+ return true;
+ return false;
+}
+