Revert r271728 as it breaks Windows build

llvm-svn: 271738

1 files changed, 0 insertions, 161 deletions

diff --git a/llvm/lib/Analysis/ProfileSummaryInfo.cpp b/llvm/lib/Analysis/ProfileSummaryInfo.cpp
deleted file mode 100644
index f3dc8b48732..00000000000
--- a/llvm/lib/Analysis/ProfileSummaryInfo.cpp
+++ /dev/null
@@ -1,161 +0,0 @@
-//===- ProfileSummaryInfo.cpp - Global profile summary information --------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file contains a pass that provides access to the global profile summary
-// information.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Analysis/ProfileSummaryInfo.h"
-#include "llvm/IR/Metadata.h"
-#include "llvm/IR/Module.h"
-#include "llvm/IR/ProfileSummary.h"
-using namespace llvm;
-
-// The following two parameters determine the threshold for a count to be
-// considered hot/cold. These two parameters are percentile values (multiplied
-// by 10000). If the counts are sorted in descending order, the minimum count to
-// reach ProfileSummaryCutoffHot gives the threshold to determine a hot count.
-// Similarly, the minimum count to reach ProfileSummaryCutoffCold gives the
-// threshold for determining cold count (everything <= this threshold is
-// considered cold).
-
-static cl::opt<int> ProfileSummaryCutoffHot(
-    "profile-summary-cutoff-hot", cl::Hidden, cl::init(999000), cl::ZeroOrMore,
-    cl::desc("A count is hot if it exceeds the minimum count to"
-             " reach this percentile of total counts."));
-
-static cl::opt<int> ProfileSummaryCutoffCold(
-    "profile-summary-cutoff-cold", cl::Hidden, cl::init(999999), cl::ZeroOrMore,
-    cl::desc("A count is cold if it is below the minimum count"
-             " to reach this percentile of total counts."));
-
-// Find the minimum count to reach a desired percentile of counts.
-static uint64_t getMinCountForPercentile(SummaryEntryVector &DS,
-                                         uint64_t Percentile) {
-  auto Compare = [](const ProfileSummaryEntry &Entry, uint64_t Percentile) {
-    return Entry.Cutoff < Percentile;
-  };
-  auto It = std::lower_bound(DS.begin(), DS.end(), Percentile, Compare);
-  // The required percentile has to be <= one of the percentiles in the
-  // detailed summary.
-  if (It == DS.end())
-    report_fatal_error("Desired percentile exceeds the maximum cutoff");
-  return It->MinCount;
-}
-
-// The profile summary metadata may be attached either by the frontend or by
-// any backend passes (IR level instrumentation, for example). This method
-// checks if the Summary is null and if so checks if the summary metadata is now
-// available in the module and parses it to get the Summary object.
-void ProfileSummaryInfo::computeSummary() {
-  if (Summary)
-    return;
-  auto *SummaryMD = M.getProfileSummary();
-  if (!SummaryMD)
-    return;
-  Summary.reset(ProfileSummary::getFromMD(SummaryMD));
-}
-
-// Returns true if the function is a hot function. If it returns false, it
-// either means it is not hot or it is unknown whether F is hot or not (for
-// example, no profile data is available).
-bool ProfileSummaryInfo::isHotFunction(const Function *F) {
-  computeSummary();
-  if (!F || !Summary)
-    return false;
-  auto FunctionCount = F->getEntryCount();
-  // FIXME: The heuristic used below for determining hotness is based on
-  // preliminary SPEC tuning for inliner. This will eventually be a
-  // convenience method that calls isHotCount.
-  return (FunctionCount &&
-          FunctionCount.getValue() >=
-              (uint64_t)(0.3 * (double)Summary->getMaxFunctionCount()));
-}
-
-// Returns true if the function is a cold function. If it returns false, it
-// either means it is not cold or it is unknown whether F is cold or not (for
-// example, no profile data is available).
-bool ProfileSummaryInfo::isColdFunction(const Function *F) {
-  computeSummary();
-  if (F->hasFnAttribute(Attribute::Cold)) {
-    return true;
-  }
-  auto FunctionCount = F->getEntryCount();
-  // FIXME: The heuristic used below for determining coldness is based on
-  // preliminary SPEC tuning for inliner. This will eventually be a
-  // convenience method that calls isHotCount.
-  return (FunctionCount &&
-          FunctionCount.getValue() <=
-              (uint64_t)(0.01 * (double)Summary->getMaxFunctionCount()));
-}
-
-// Compute the hot and cold thresholds.
-void ProfileSummaryInfo::computeThresholds() {
-  if (!Summary)
-    computeSummary();
-  if (!Summary)
-    return;
-  auto &DetailedSummary = Summary->getDetailedSummary();
-  HotCountThreshold =
-      getMinCountForPercentile(DetailedSummary, ProfileSummaryCutoffHot);
-  ColdCountThreshold =
-      getMinCountForPercentile(DetailedSummary, ProfileSummaryCutoffCold);
-}
-
-bool ProfileSummaryInfo::isHotCount(uint64_t C) {
-  if (!HotCountThreshold)
-    computeThresholds();
-  return HotCountThreshold && C >= HotCountThreshold.getValue();
-}
-
-bool ProfileSummaryInfo::isColdCount(uint64_t C) {
-  if (!ColdCountThreshold)
-    computeThresholds();
-  return ColdCountThreshold && C <= ColdCountThreshold.getValue();
-}
-
-ProfileSummaryInfo *ProfileSummaryInfoWrapperPass::getPSI(Module &M) {
-  if (!PSI)
-    PSI.reset(new ProfileSummaryInfo(M));
-  return PSI.get();
-}
-
-INITIALIZE_PASS(ProfileSummaryInfoWrapperPass, "profile-summary-info",
-                "Profile summary info", false, true)
-
-ProfileSummaryInfoWrapperPass::ProfileSummaryInfoWrapperPass()
-    : ImmutablePass(ID) {
-  initializeProfileSummaryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
-}
-
-char ProfileSummaryAnalysis::PassID;
-ProfileSummaryInfo ProfileSummaryAnalysis::run(Module &M) {
-  return ProfileSummaryInfo(M);
-}
-
-// FIXME: This only tests isHotFunction and isColdFunction and not the
-// isHotCount and isColdCount calls.
-PreservedAnalyses ProfileSummaryPrinterPass::run(Module &M,
-                                                 AnalysisManager<Module> &AM) {
-  ProfileSummaryInfo &PSI = AM.getResult<ProfileSummaryAnalysis>(M);
-
-  OS << "Functions in " << M.getName() << " with hot/cold annotations: \n";
-  for (auto &F : M) {
-    OS << F.getName();
-    if (PSI.isHotFunction(&F))
-      OS << " :hot ";
-    else if (PSI.isColdFunction(&F))
-      OS << " :cold ";
-    OS << "\n";
-  }
-  return PreservedAnalyses::all();
-}
-
-char ProfileSummaryInfoWrapperPass::ID = 0;