Add profiling support for Intel Parallel Amplifier XE (VTune) for JITted code in LLVM.

Also refactor the existing OProfile profiling code to reuse the same interfaces with the VTune profiling code.
In addition, unit tests for the profiling interfaces were added.

This patch was prepared by Andrew Kaylor and Daniel Malea, and reviewed in the llvm-commits list by Jim Grosbach



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152620 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 0 insertions, 193 deletions

diff --git a/lib/ExecutionEngine/JIT/CMakeLists.txt b/lib/ExecutionEngine/JIT/CMakeLists.txt
index dcef08c47f..09728723b7 100644
--- a/lib/ExecutionEngine/JIT/CMakeLists.txt
+++ b/lib/ExecutionEngine/JIT/CMakeLists.txt
@@ -7,5 +7,4 @@ add_llvm_library(LLVMJIT
   JITDwarfEmitter.cpp
   JITEmitter.cpp
   JITMemoryManager.cpp
-  OProfileJITEventListener.cpp
   )
diff --git a/lib/ExecutionEngine/JIT/OProfileJITEventListener.cpp b/lib/ExecutionEngine/JIT/OProfileJITEventListener.cpp
deleted file mode 100644
index 9a9ed6d334..0000000000
--- a/lib/ExecutionEngine/JIT/OProfileJITEventListener.cpp
+++ /dev/null
@@ -1,192 +0,0 @@
-//===-- OProfileJITEventListener.cpp - Tell OProfile about JITted code ----===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file defines a JITEventListener object that calls into OProfile to tell
-// it about JITted functions.  For now, we only record function names and sizes,
-// but eventually we'll also record line number information.
-//
-// See http://oprofile.sourceforge.net/doc/devel/jit-interface.html for the
-// definition of the interface we're using.
-//
-//===----------------------------------------------------------------------===//
-
-#define DEBUG_TYPE "oprofile-jit-event-listener"
-#include "llvm/Function.h"
-#include "llvm/Metadata.h"
-#include "llvm/ADT/DenseMap.h"
-#include "llvm/Analysis/DebugInfo.h"
-#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/ExecutionEngine/JITEventListener.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/ValueHandle.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/Support/Errno.h"
-#include "llvm/Config/config.h"
-#include <stddef.h>
-using namespace llvm;
-
-#if USE_OPROFILE
-
-#include <opagent.h>
-
-namespace {
-
-class OProfileJITEventListener : public JITEventListener {
-  op_agent_t Agent;
-public:
-  OProfileJITEventListener();
-  ~OProfileJITEventListener();
-
-  virtual void NotifyFunctionEmitted(const Function &F,
-                                     void *FnStart, size_t FnSize,
-                                     const EmittedFunctionDetails &Details);
-  virtual void NotifyFreeingMachineCode(void *OldPtr);
-};
-
-OProfileJITEventListener::OProfileJITEventListener()
-    : Agent(op_open_agent()) {
-  if (Agent == NULL) {
-    const std::string err_str = sys::StrError();
-    DEBUG(dbgs() << "Failed to connect to OProfile agent: " << err_str << "\n");
-  } else {
-    DEBUG(dbgs() << "Connected to OProfile agent.\n");
-  }
-}
-
-OProfileJITEventListener::~OProfileJITEventListener() {
-  if (Agent != NULL) {
-    if (op_close_agent(Agent) == -1) {
-      const std::string err_str = sys::StrError();
-      DEBUG(dbgs() << "Failed to disconnect from OProfile agent: "
-                   << err_str << "\n");
-    } else {
-      DEBUG(dbgs() << "Disconnected from OProfile agent.\n");
-    }
-  }
-}
-
-class FilenameCache {
-  // Holds the filename of each Scope, so that we can pass a null-terminated
-  // string into oprofile.  Use an AssertingVH rather than a ValueMap because we
-  // shouldn't be modifying any MDNodes while this map is alive.
-  DenseMap<AssertingVH<MDNode>, std::string> Filenames;
-
- public:
-  const char *getFilename(MDNode *Scope) {
-    std::string &Filename = Filenames[Scope];
-    if (Filename.empty()) {
-      Filename = DIScope(Scope).getFilename();
-    }
-    return Filename.c_str();
-  }
-};
-
-static debug_line_info LineStartToOProfileFormat(
-    const MachineFunction &MF, FilenameCache &Filenames,
-    uintptr_t Address, DebugLoc Loc) {
-  debug_line_info Result;
-  Result.vma = Address;
-  Result.lineno = Loc.getLine();
-  Result.filename = Filenames.getFilename(
-    Loc.getScope(MF.getFunction()->getContext()));
-  DEBUG(dbgs() << "Mapping " << reinterpret_cast<void*>(Result.vma) << " to "
-               << Result.filename << ":" << Result.lineno << "\n");
-  return Result;
-}
-
-// Adds the just-emitted function to the symbol table.
-void OProfileJITEventListener::NotifyFunctionEmitted(
-    const Function &F, void *FnStart, size_t FnSize,
-    const EmittedFunctionDetails &Details) {
-  assert(F.hasName() && FnStart != 0 && "Bad symbol to add");
-  if (op_write_native_code(Agent, F.getName().data(),
-                           reinterpret_cast<uint64_t>(FnStart),
-                           FnStart, FnSize) == -1) {
-    DEBUG(dbgs() << "Failed to tell OProfile about native function "
-          << F.getName() << " at ["
-          << FnStart << "-" << ((char*)FnStart + FnSize) << "]\n");
-    return;
-  }
-
-  if (!Details.LineStarts.empty()) {
-    // Now we convert the line number information from the address/DebugLoc
-    // format in Details to the address/filename/lineno format that OProfile
-    // expects.  Note that OProfile 0.9.4 has a bug that causes it to ignore
-    // line numbers for addresses above 4G.
-    FilenameCache Filenames;
-    std::vector<debug_line_info> LineInfo;
-    LineInfo.reserve(1 + Details.LineStarts.size());
-
-    DebugLoc FirstLoc = Details.LineStarts[0].Loc;
-    assert(!FirstLoc.isUnknown()
-           && "LineStarts should not contain unknown DebugLocs");
-    MDNode *FirstLocScope = FirstLoc.getScope(F.getContext());
-    DISubprogram FunctionDI = getDISubprogram(FirstLocScope);
-    if (FunctionDI.Verify()) {
-      // If we have debug info for the function itself, use that as the line
-      // number of the first several instructions.  Otherwise, after filling
-      // LineInfo, we'll adjust the address of the first line number to point at
-      // the start of the function.
-      debug_line_info line_info;
-      line_info.vma = reinterpret_cast<uintptr_t>(FnStart);
-      line_info.lineno = FunctionDI.getLineNumber();
-      line_info.filename = Filenames.getFilename(FirstLocScope);
-      LineInfo.push_back(line_info);
-    }
-
-    for (std::vector<EmittedFunctionDetails::LineStart>::const_iterator
-           I = Details.LineStarts.begin(), E = Details.LineStarts.end();
-         I != E; ++I) {
-      LineInfo.push_back(LineStartToOProfileFormat(
-                           *Details.MF, Filenames, I->Address, I->Loc));
-    }
-
-    // In case the function didn't have line info of its own, adjust the first
-    // line info's address to include the start of the function.
-    LineInfo[0].vma = reinterpret_cast<uintptr_t>(FnStart);
-
-    if (op_write_debug_line_info(Agent, FnStart,
-                                 LineInfo.size(), &*LineInfo.begin()) == -1) {
-      DEBUG(dbgs()
-            << "Failed to tell OProfile about line numbers for native function "
-            << F.getName() << " at ["
-            << FnStart << "-" << ((char*)FnStart + FnSize) << "]\n");
-    }
-  }
-}
-
-// Removes the being-deleted function from the symbol table.
-void OProfileJITEventListener::NotifyFreeingMachineCode(void *FnStart) {
-  assert(FnStart && "Invalid function pointer");
-  if (op_unload_native_code(Agent, reinterpret_cast<uint64_t>(FnStart)) == -1) {
-    DEBUG(dbgs()
-          << "Failed to tell OProfile about unload of native function at "
-          << FnStart << "\n");
-  }
-}
-
-}  // anonymous namespace.
-
-namespace llvm {
-JITEventListener *createOProfileJITEventListener() {
-  return new OProfileJITEventListener;
-}
-}
-
-#else  // USE_OPROFILE
-
-namespace llvm {
-// By defining this to return NULL, we can let clients call it unconditionally,
-// even if they haven't configured with the OProfile libraries.
-JITEventListener *createOProfileJITEventListener() {
-  return NULL;
-}
-}  // namespace llvm
-
-#endif  // USE_OPROFILE