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-rw-r--r--tools/llvm-prof/llvm-prof.cpp127
1 files changed, 56 insertions, 71 deletions
diff --git a/tools/llvm-prof/llvm-prof.cpp b/tools/llvm-prof/llvm-prof.cpp
index 8dd26b03c91..64fe4515006 100644
--- a/tools/llvm-prof/llvm-prof.cpp
+++ b/tools/llvm-prof/llvm-prof.cpp
@@ -20,6 +20,7 @@
#include "llvm/Assembly/AsmAnnotationWriter.h"
#include "llvm/Analysis/ProfileInfo.h"
#include "llvm/Analysis/ProfileInfoLoader.h"
+#include "llvm/Analysis/Passes.h"
#include "llvm/Bitcode/ReaderWriter.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ManagedStatic.h"
@@ -67,48 +68,38 @@ struct PairSecondSortReverse
namespace {
class ProfileAnnotator : public AssemblyAnnotationWriter {
- std::map<const Function *, unsigned> &FuncFreqs;
- std::map<const BasicBlock*, unsigned> &BlockFreqs;
- std::map<ProfileInfoLoader::Edge, unsigned> &EdgeFreqs;
+ ProfileInfo &PI;
public:
- ProfileAnnotator(std::map<const Function *, unsigned> &FF,
- std::map<const BasicBlock*, unsigned> &BF,
- std::map<ProfileInfoLoader::Edge, unsigned> &EF)
- : FuncFreqs(FF), BlockFreqs(BF), EdgeFreqs(EF) {}
+ ProfileAnnotator(ProfileInfo& pi) : PI(pi) {}
virtual void emitFunctionAnnot(const Function *F, raw_ostream &OS) {
- OS << ";;; %" << F->getName() << " called " << FuncFreqs[F]
+ OS << ";;; %" << F->getName() << " called " << PI.getExecutionCount(F)
<< " times.\n;;;\n";
}
virtual void emitBasicBlockStartAnnot(const BasicBlock *BB,
raw_ostream &OS) {
- if (BlockFreqs.empty()) return;
- std::map<const BasicBlock *, unsigned>::const_iterator I =
- BlockFreqs.find(BB);
- if (I != BlockFreqs.end())
- OS << "\t;;; Basic block executed " << I->second << " times.\n";
+ unsigned w = PI.getExecutionCount(BB);
+ if (w != 0)
+ OS << "\t;;; Basic block executed " << w << " times.\n";
else
OS << "\t;;; Never executed!\n";
}
virtual void emitBasicBlockEndAnnot(const BasicBlock *BB, raw_ostream &OS) {
- if (EdgeFreqs.empty()) return;
-
// Figure out how many times each successor executed.
- std::vector<std::pair<const BasicBlock*, unsigned> > SuccCounts;
- const TerminatorInst *TI = BB->getTerminator();
+ std::vector<std::pair<ProfileInfo::Edge, unsigned> > SuccCounts;
- std::map<ProfileInfoLoader::Edge, unsigned>::iterator I =
- EdgeFreqs.lower_bound(std::make_pair(const_cast<BasicBlock*>(BB), 0U));
- for (; I != EdgeFreqs.end() && I->first.first == BB; ++I)
- if (I->second)
- SuccCounts.push_back(std::make_pair(TI->getSuccessor(I->first.second),
- I->second));
+ const TerminatorInst *TI = BB->getTerminator();
+ for (unsigned s = 0, e = TI->getNumSuccessors(); s != e; ++s) {
+ BasicBlock* Succ = TI->getSuccessor(s);
+ SuccCounts.push_back(std::make_pair(std::make_pair(BB,Succ),
+ PI.getEdgeWeight(BB,Succ)));
+ }
if (!SuccCounts.empty()) {
OS << "\t;;; Out-edge counts:";
for (unsigned i = 0, e = SuccCounts.size(); i != e; ++i)
- OS << " [" << SuccCounts[i].second << " -> "
- << SuccCounts[i].first->getName() << "]";
+ OS << " [" << (SuccCounts[i]).second << " -> "
+ << (SuccCounts[i]).first.second->getName() << "]";
OS << "\n";
}
}
@@ -139,17 +130,26 @@ namespace {
char ProfileInfoPrinterPass::ID = 0;
bool ProfileInfoPrinterPass::runOnModule(Module &M) {
+ ProfileInfo &PI = getAnalysis<ProfileInfo>();
std::map<const Function *, unsigned> FuncFreqs;
std::map<const BasicBlock*, unsigned> BlockFreqs;
- std::map<ProfileInfoLoader::Edge, unsigned> EdgeFreqs;
+ std::map<ProfileInfo::Edge, unsigned> EdgeFreqs;
// Output a report. Eventually, there will be multiple reports selectable on
// the command line, for now, just keep things simple.
// Emit the most frequent function table...
std::vector<std::pair<Function*, unsigned> > FunctionCounts;
- PIL.getFunctionCounts(FunctionCounts);
- FuncFreqs.insert(FunctionCounts.begin(), FunctionCounts.end());
+ std::vector<std::pair<BasicBlock*, unsigned> > Counts;
+ for (Module::iterator FI = M.begin(), FE = M.end(); FI != FE; ++FI) {
+ unsigned w = PI.getExecutionCount(FI);
+ if (w != (unsigned) -1)
+ FunctionCounts.push_back(std::make_pair(FI,PI.getExecutionCount(FI)));
+ for (Function::iterator BB = FI->begin(), BBE = FI->end();
+ BB != BBE; ++BB) {
+ Counts.push_back(std::make_pair(BB,PI.getExecutionCount(BB)));
+ }
+ }
// Sort by the frequency, backwards.
sort(FunctionCounts.begin(), FunctionCounts.end(),
@@ -190,54 +190,39 @@ bool ProfileInfoPrinterPass::runOnModule(Module &M) {
std::set<Function*> FunctionsToPrint;
- // If we have block count information, print out the LLVM module with
- // frequency annotations.
- if (PIL.hasAccurateBlockCounts()) {
- std::vector<std::pair<BasicBlock*, unsigned> > Counts;
- PIL.getBlockCounts(Counts);
-
- TotalExecutions = 0;
- for (unsigned i = 0, e = Counts.size(); i != e; ++i)
- TotalExecutions += Counts[i].second;
-
- // Sort by the frequency, backwards.
- sort(Counts.begin(), Counts.end(),
- PairSecondSortReverse<BasicBlock*>());
-
- std::cout << "\n===" << std::string(73, '-') << "===\n";
- std::cout << "Top 20 most frequently executed basic blocks:\n\n";
-
- // Print out the function frequencies...
- std::cout <<" ## %% \tFrequency\n";
- unsigned BlocksToPrint = Counts.size();
- if (BlocksToPrint > 20) BlocksToPrint = 20;
- for (unsigned i = 0; i != BlocksToPrint; ++i) {
- if (Counts[i].second == 0) break;
- Function *F = Counts[i].first->getParent();
- std::cout << std::setw(3) << i+1 << ". "
- << std::setw(5) << std::setprecision(2)
- << Counts[i].second/(double)TotalExecutions*100 << "% "
- << std::setw(5) << Counts[i].second << "/"
- << TotalExecutions << "\t"
- << F->getNameStr() << "() - "
- << Counts[i].first->getNameStr() << "\n";
- FunctionsToPrint.insert(F);
- }
-
- BlockFreqs.insert(Counts.begin(), Counts.end());
- }
-
- if (PIL.hasAccurateEdgeCounts()) {
- std::vector<std::pair<ProfileInfoLoader::Edge, unsigned> > Counts;
- PIL.getEdgeCounts(Counts);
- EdgeFreqs.insert(Counts.begin(), Counts.end());
+ TotalExecutions = 0;
+ for (unsigned i = 0, e = Counts.size(); i != e; ++i)
+ TotalExecutions += Counts[i].second;
+
+ // Sort by the frequency, backwards.
+ sort(Counts.begin(), Counts.end(),
+ PairSecondSortReverse<BasicBlock*>());
+
+ std::cout << "\n===" << std::string(73, '-') << "===\n";
+ std::cout << "Top 20 most frequently executed basic blocks:\n\n";
+
+ // Print out the function frequencies...
+ std::cout <<" ## %% \tFrequency\n";
+ unsigned BlocksToPrint = Counts.size();
+ if (BlocksToPrint > 20) BlocksToPrint = 20;
+ for (unsigned i = 0; i != BlocksToPrint; ++i) {
+ if (Counts[i].second == 0) break;
+ Function *F = Counts[i].first->getParent();
+ std::cout << std::setw(3) << i+1 << ". "
+ << std::setw(5) << std::setprecision(2)
+ << Counts[i].second/(double)TotalExecutions*100 << "% "
+ << std::setw(5) << Counts[i].second << "/"
+ << TotalExecutions << "\t"
+ << F->getNameStr() << "() - "
+ << Counts[i].first->getNameStr() << "\n";
+ FunctionsToPrint.insert(F);
}
if (PrintAnnotatedLLVM || PrintAllCode) {
std::cout << "\n===" << std::string(73, '-') << "===\n";
std::cout << "Annotated LLVM code for the module:\n\n";
-
- ProfileAnnotator PA(FuncFreqs, BlockFreqs, EdgeFreqs);
+
+ ProfileAnnotator PA(PI);
if (FunctionsToPrint.empty() || PrintAllCode)
M.print(std::cout, &PA);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-05 00:39:10 +0000