-//====------ MachineBlockFrequencyInfo.cpp - MBB Frequency Analysis ------====//
+//===- MachineBlockFrequencyInfo.cpp - MBB Frequency Analysis -------------===//
//
// The LLVM Compiler Infrastructure
//
//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/MachineBlockFrequencyInfo.h"
-#include "llvm/Analysis/BlockFrequencyImpl.h"
+#include "llvm/Analysis/BlockFrequencyInfoImpl.h"
#include "llvm/CodeGen/MachineBranchProbabilityInfo.h"
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineLoopInfo.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/InitializePasses.h"
#include "llvm/Support/CommandLine.h"
using namespace llvm;
+#define DEBUG_TYPE "block-freq"
+
#ifndef NDEBUG
enum GVDAGType {
GVDT_None,
OS << Node->getName().str() << ":";
switch (ViewMachineBlockFreqPropagationDAG) {
case GVDT_Fraction:
- Graph->getBlockFreq(Node).print(OS);
+ Graph->printBlockFreq(OS, Node);
break;
case GVDT_Integer:
OS << Graph->getBlockFreq(Node).getFrequency();
INITIALIZE_PASS_BEGIN(MachineBlockFrequencyInfo, "machine-block-freq",
"Machine Block Frequency Analysis", true, true)
INITIALIZE_PASS_DEPENDENCY(MachineBranchProbabilityInfo)
+INITIALIZE_PASS_DEPENDENCY(MachineLoopInfo)
INITIALIZE_PASS_END(MachineBlockFrequencyInfo, "machine-block-freq",
"Machine Block Frequency Analysis", true, true)
MachineBlockFrequencyInfo::
MachineBlockFrequencyInfo() :MachineFunctionPass(ID) {
initializeMachineBlockFrequencyInfoPass(*PassRegistry::getPassRegistry());
- MBFI = new BlockFrequencyImpl<MachineBasicBlock, MachineFunction,
- MachineBranchProbabilityInfo>();
}
-MachineBlockFrequencyInfo::~MachineBlockFrequencyInfo() {
- delete MBFI;
-}
+MachineBlockFrequencyInfo::~MachineBlockFrequencyInfo() {}
void MachineBlockFrequencyInfo::getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequired<MachineBranchProbabilityInfo>();
+ AU.addRequired<MachineLoopInfo>();
AU.setPreservesAll();
MachineFunctionPass::getAnalysisUsage(AU);
}
bool MachineBlockFrequencyInfo::runOnMachineFunction(MachineFunction &F) {
MachineBranchProbabilityInfo &MBPI =
- getAnalysis<MachineBranchProbabilityInfo>();
- MBFI->doFunction(&F, &MBPI);
+ getAnalysis<MachineBranchProbabilityInfo>();
+ MachineLoopInfo &MLI = getAnalysis<MachineLoopInfo>();
+ if (!MBFI)
+ MBFI.reset(new ImplType);
+ MBFI->doFunction(&F, &MBPI, &MLI);
#ifndef NDEBUG
if (ViewMachineBlockFreqPropagationDAG != GVDT_None) {
view();
return false;
}
+void MachineBlockFrequencyInfo::releaseMemory() { MBFI.reset(); }
+
/// Pop up a ghostview window with the current block frequency propagation
/// rendered using dot.
void MachineBlockFrequencyInfo::view() const {
BlockFrequency MachineBlockFrequencyInfo::
getBlockFreq(const MachineBasicBlock *MBB) const {
- return MBFI->getBlockFreq(MBB);
+ return MBFI ? MBFI->getBlockFreq(MBB) : 0;
+}
+
+const MachineFunction *MachineBlockFrequencyInfo::getFunction() const {
+ return MBFI ? MBFI->getFunction() : nullptr;
+}
+
+raw_ostream &
+MachineBlockFrequencyInfo::printBlockFreq(raw_ostream &OS,
+ const BlockFrequency Freq) const {
+ return MBFI ? MBFI->printBlockFreq(OS, Freq) : OS;
+}
+
+raw_ostream &
+MachineBlockFrequencyInfo::printBlockFreq(raw_ostream &OS,
+ const MachineBasicBlock *MBB) const {
+ return MBFI ? MBFI->printBlockFreq(OS, MBB) : OS;
}
-MachineFunction *MachineBlockFrequencyInfo::getFunction() const {
- return MBFI->Fn;
+uint64_t MachineBlockFrequencyInfo::getEntryFreq() const {
+ return MBFI ? MBFI->getEntryFreq() : 0;
}