bool SimplifyCFG(BasicBlock *BB);
/// DemoteRegToStack - This function takes a virtual register computed by an
-/// Instruction& X and replaces it with a slot in the stack frame, allocated via
+/// Instruction and replaces it with a slot in the stack frame, allocated via
/// alloca. This allows the CFG to be changed around without fear of
/// invalidating the SSA information for the value. It returns the pointer to
/// the alloca inserted to create a stack slot for X.