SpecialCaseList: Add support for parsing multiple input files.

[oota-llvm.git] / lib / Analysis / BlockFrequencyInfo.cpp

diff --git a/lib/Analysis/BlockFrequencyInfo.cpp b/lib/Analysis/BlockFrequencyInfo.cpp
index 2616edd78baa9bd00f32fa2fd62323f6ab28e5e9..37f2fae6244ed500a84f0bbba5f85c6306299a4b 100644 (file)
--- a/lib/Analysis/BlockFrequencyInfo.cpp
+++ b/lib/Analysis/BlockFrequencyInfo.cpp
@@ -1,4 +1,4 @@
-//=======-------- BlockFrequencyInfo.cpp - Block Frequency Analysis -------===//
+//===- BlockFrequencyInfo.cpp - Block Frequency Analysis ------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -12,18 +12,20 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Analysis/BlockFrequencyInfo.h"
-#include "llvm/Analysis/BlockFrequencyImpl.h"
+#include "llvm/Analysis/BlockFrequencyInfoImpl.h"
 #include "llvm/Analysis/BranchProbabilityInfo.h"
 #include "llvm/Analysis/LoopInfo.h"
 #include "llvm/Analysis/Passes.h"
+#include "llvm/IR/CFG.h"
 #include "llvm/InitializePasses.h"
-#include "llvm/Support/CFG.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/GraphWriter.h"
 
 using namespace llvm;
 
+#define DEBUG_TYPE "block-freq"
+
 #ifndef NDEBUG
 enum GVDAGType {
   GVDT_None,
@@ -106,6 +108,7 @@ struct DOTGraphTraits<BlockFrequencyInfo*> : public DefaultDOTGraphTraits {
 INITIALIZE_PASS_BEGIN(BlockFrequencyInfo, "block-freq",
                       "Block Frequency Analysis", true, true)
 INITIALIZE_PASS_DEPENDENCY(BranchProbabilityInfo)
+INITIALIZE_PASS_DEPENDENCY(LoopInfoWrapperPass)
 INITIALIZE_PASS_END(BlockFrequencyInfo, "block-freq",
                     "Block Frequency Analysis", true, true)
 
@@ -114,21 +117,22 @@ char BlockFrequencyInfo::ID = 0;
 
 BlockFrequencyInfo::BlockFrequencyInfo() : FunctionPass(ID) {
   initializeBlockFrequencyInfoPass(*PassRegistry::getPassRegistry());
-  BFI = new BlockFrequencyImpl<BasicBlock, Function, BranchProbabilityInfo>();
 }
 
-BlockFrequencyInfo::~BlockFrequencyInfo() {
-  delete BFI;
-}
+BlockFrequencyInfo::~BlockFrequencyInfo() {}
 
 void BlockFrequencyInfo::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.addRequired<BranchProbabilityInfo>();
+  AU.addRequired<LoopInfoWrapperPass>();
   AU.setPreservesAll();
 }
 
 bool BlockFrequencyInfo::runOnFunction(Function &F) {
   BranchProbabilityInfo &BPI = getAnalysis<BranchProbabilityInfo>();
-  BFI->doFunction(&F, &BPI);
+  LoopInfo &LI = getAnalysis<LoopInfoWrapperPass>().getLoopInfo();
+  if (!BFI)
+    BFI.reset(new ImplType);
+  BFI->doFunction(&F, &BPI, &LI);
 #ifndef NDEBUG
   if (ViewBlockFreqPropagationDAG != GVDT_None)
     view();
@@ -136,12 +140,14 @@ bool BlockFrequencyInfo::runOnFunction(Function &F) {
   return false;
 }
 
+void BlockFrequencyInfo::releaseMemory() { BFI.reset(); }
+
 void BlockFrequencyInfo::print(raw_ostream &O, const Module *) const {
   if (BFI) BFI->print(O);
 }
 
 BlockFrequency BlockFrequencyInfo::getBlockFreq(const BasicBlock *BB) const {
-  return BFI->getBlockFreq(BB);
+  return BFI ? BFI->getBlockFreq(BB) : 0;
 }
 
 /// Pop up a ghostview window with the current block frequency propagation
@@ -157,16 +163,20 @@ void BlockFrequencyInfo::view() const {
 }
 
 const Function *BlockFrequencyInfo::getFunction() const {
-  return BFI->Fn;
+  return BFI ? BFI->getFunction() : nullptr;
 }
 
 raw_ostream &BlockFrequencyInfo::
 printBlockFreq(raw_ostream &OS, const BlockFrequency Freq) const {
-  return BFI->printBlockFreq(OS, Freq);
+  return BFI ? BFI->printBlockFreq(OS, Freq) : OS;
 }
 
 raw_ostream &
 BlockFrequencyInfo::printBlockFreq(raw_ostream &OS,
                                    const BasicBlock *BB) const {
-  return BFI->printBlockFreq(OS, BB);
+  return BFI ? BFI->printBlockFreq(OS, BB) : OS;
+}
+
+uint64_t BlockFrequencyInfo::getEntryFreq() const {
+  return BFI ? BFI->getEntryFreq() : 0;
 }