//
//===----------------------------------------------------------------------===//
-#define DEBUG_TYPE "regalloc"
#include "llvm/CodeGen/Passes.h"
#include "AllocationOrder.h"
#include "LiveDebugVariables.h"
#include "llvm/PassAnalysisSupport.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
-#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include <cstdlib>
#include <queue>
using namespace llvm;
+#define DEBUG_TYPE "regalloc"
+
static RegisterRegAlloc basicRegAlloc("basic", "basic register allocator",
createBasicRegisterAllocator);
MachineFunction *MF;
// state
- OwningPtr<Spiller> SpillerInstance;
+ std::unique_ptr<Spiller> SpillerInstance;
std::priority_queue<LiveInterval*, std::vector<LiveInterval*>,
CompSpillWeight> Queue;
RABasic();
/// Return the pass name.
- virtual const char* getPassName() const {
+ const char* getPassName() const override {
return "Basic Register Allocator";
}
/// RABasic analysis usage.
- virtual void getAnalysisUsage(AnalysisUsage &AU) const;
+ void getAnalysisUsage(AnalysisUsage &AU) const override;
- virtual void releaseMemory();
+ void releaseMemory() override;
- virtual Spiller &spiller() { return *SpillerInstance; }
+ Spiller &spiller() override { return *SpillerInstance; }
- virtual float getPriority(LiveInterval *LI) { return LI->weight; }
-
- virtual void enqueue(LiveInterval *LI) {
+ void enqueue(LiveInterval *LI) override {
Queue.push(LI);
}
- virtual LiveInterval *dequeue() {
+ LiveInterval *dequeue() override {
if (Queue.empty())
- return 0;
+ return nullptr;
LiveInterval *LI = Queue.top();
Queue.pop();
return LI;
}
- virtual unsigned selectOrSplit(LiveInterval &VirtReg,
- SmallVectorImpl<unsigned> &SplitVRegs);
+ unsigned selectOrSplit(LiveInterval &VirtReg,
+ SmallVectorImpl<unsigned> &SplitVRegs) override;
/// Perform register allocation.
- virtual bool runOnMachineFunction(MachineFunction &mf);
+ bool runOnMachineFunction(MachineFunction &mf) override;
// Helper for spilling all live virtual registers currently unified under preg
// that interfere with the most recently queried lvr. Return true if spilling
initializeSlotIndexesPass(*PassRegistry::getPassRegistry());
initializeRegisterCoalescerPass(*PassRegistry::getPassRegistry());
initializeMachineSchedulerPass(*PassRegistry::getPassRegistry());
- initializeCalculateSpillWeightsPass(*PassRegistry::getPassRegistry());
initializeLiveStacksPass(*PassRegistry::getPassRegistry());
initializeMachineDominatorTreePass(*PassRegistry::getPassRegistry());
initializeMachineLoopInfoPass(*PassRegistry::getPassRegistry());
AU.addPreserved<SlotIndexes>();
AU.addRequired<LiveDebugVariables>();
AU.addPreserved<LiveDebugVariables>();
- AU.addRequired<CalculateSpillWeights>();
AU.addRequired<LiveStacks>();
AU.addPreserved<LiveStacks>();
AU.addRequired<MachineBlockFrequencyInfo>();
}
void RABasic::releaseMemory() {
- SpillerInstance.reset(0);
+ SpillerInstance.reset();
}
RegAllocBase::init(getAnalysis<VirtRegMap>(),
getAnalysis<LiveIntervals>(),
getAnalysis<LiveRegMatrix>());
+
+ calculateSpillWeightsAndHints(*LIS, *MF,
+ getAnalysis<MachineLoopInfo>(),
+ getAnalysis<MachineBlockFrequencyInfo>());
+
SpillerInstance.reset(createInlineSpiller(*this, *MF, *VRM));
allocatePhysRegs();