/// is a bit set which uses the basic block number as an index.
BitVector UsedBlocks;
+ /// NumUses - Number of uses of this register across the entire function.
+ ///
+ unsigned NumUses;
+
/// Kills - List of MachineInstruction's which are the last use of this
/// virtual register (kill it) in their basic block.
///
std::vector<MachineInstr*> Kills;
- VarInfo() : DefInst(0) {}
+ VarInfo() : DefInst(0), NumUses(0) {}
/// removeKill - Delete a kill corresponding to the specified
/// machine instruction. Returns true if there was a kill
unsigned BBNum = MBB->getNumber();
VRInfo.UsedBlocks[BBNum] = true;
+ VRInfo.NumUses++;
// Check to see if this basic block is already a kill block...
if (!VRInfo.Kills.empty() && VRInfo.Kills.back()->getParent() == MBB) {