#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
+#include "llvm/Support/BlockFrequency.h"
namespace llvm {
SmallVector<unsigned, 8> RecentPositive;
// Block frequencies are computed once. Indexed by block number.
- SmallVector<float, 4> BlockFrequency;
+ SmallVector<BlockFrequency, 4> BlockFrequencies;
public:
static char ID; // Pass identification, replacement for typeid.
/// Entry = Exit = PrefSpill, and ChangesValue = false.
///
/// @param Blocks Array of block numbers that prefer to spill in and out.
- void addPrefSpill(ArrayRef<unsigned> Blocks);
+ /// @param Strong When true, double the negative bias for these blocks.
+ void addPrefSpill(ArrayRef<unsigned> Blocks, bool Strong);
/// addLinks - Add transparent blocks with the given numbers.
void addLinks(ArrayRef<unsigned> Links);
/// getBlockFrequency - Return the estimated block execution frequency per
/// function invocation.
- float getBlockFrequency(unsigned Number) const {
- return BlockFrequency[Number];
+ BlockFrequency getBlockFrequency(unsigned Number) const {
+ return BlockFrequencies[Number];
}
private: