[profiling] Move option declarations into headers

[tstellar]

Summary

This will make it possible to add visibility attributes to these
variables. This also fixes some type mismatches between the
declaration and the definition.

clang/lib/CodeGen/BackendUtil.cpp

 #include "llvm/Transforms/Instrumentation/BoundsChecking.h"
 #include "llvm/Transforms/Instrumentation/DataFlowSanitizer.h"
 #include "llvm/Transforms/Instrumentation/GCOVProfiler.h"
 #include "llvm/Transforms/Instrumentation/HWAddressSanitizer.h"
 #include "llvm/Transforms/Instrumentation/InstrProfiling.h"
 #include "llvm/Transforms/Instrumentation/KCFI.h"
 #include "llvm/Transforms/Instrumentation/MemProfiler.h"
 #include "llvm/Transforms/Instrumentation/MemorySanitizer.h"
+#include "llvm/Transforms/Instrumentation/PGOInstrumentation.h"
 #include "llvm/Transforms/Instrumentation/SanitizerBinaryMetadata.h"
 #include "llvm/Transforms/Instrumentation/SanitizerCoverage.h"
 #include "llvm/Transforms/Instrumentation/ThreadSanitizer.h"
 #include "llvm/Transforms/ObjCARC.h"
 #include "llvm/Transforms/Scalar/EarlyCSE.h"
 #include "llvm/Transforms/Scalar/GVN.h"
 #include "llvm/Transforms/Scalar/JumpThreading.h"
 #include "llvm/Transforms/Utils/Debugify.h"
 #include "llvm/Transforms/Utils/EntryExitInstrumenter.h"
 #include "llvm/Transforms/Utils/ModuleUtils.h"
 #include <memory>
 #include <optional>
 using namespace clang;
 using namespace llvm;
 
 #define HANDLE_EXTENSION(Ext)                                                  \
   llvm::PassPluginLibraryInfo get##Ext##PluginInfo();
 #include "llvm/Support/Extension.def"
 
 namespace llvm {
-extern cl::opt<bool> DebugInfoCorrelate;
 extern cl::opt<bool> PrintPipelinePasses;
 
 // Experiment to move sanitizers earlier.
 static cl::opt<bool> ClSanitizeOnOptimizerEarlyEP(
     "sanitizer-early-opt-ep", cl::Optional,
     cl::desc("Insert sanitizers on OptimizerEarlyEP."), cl::init(false));
 }
 

llvm/include/llvm/ProfileData/ProfileCommon.h

 #include <cstdint>
 #include <functional>
 #include <map>
 #include <memory>
 #include <vector>
 
 namespace llvm {
 
+extern cl::opt<bool> UseContextLessSummary;
+extern cl::opt<int> ProfileSummaryCutoffHot;
+extern cl::opt<int> ProfileSummaryCutoffCold;
+extern cl::opt<unsigned> ProfileSummaryHugeWorkingSetSizeThreshold;
+extern cl::opt<unsigned> ProfileSummaryLargeWorkingSetSizeThreshold;
+extern cl::opt<uint64_t> ProfileSummaryHotCount;
+extern cl::opt<uint64_t> ProfileSummaryColdCount;
+
 namespace sampleprof {
 
 class FunctionSamples;
 
 } // end namespace sampleprof
 
 class ProfileSummaryBuilder {
 private:

llvm/include/llvm/Transforms/IPO/SampleProfile.h

 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_TRANSFORMS_IPO_SAMPLEPROFILE_H
 #define LLVM_TRANSFORMS_IPO_SAMPLEPROFILE_H
 
 #include "llvm/ADT/IntrusiveRefCntPtr.h"
 #include "llvm/IR/PassManager.h"
 #include "llvm/Pass.h"
+#include "llvm/Support/CommandLine.h"
 #include <string>
 
 namespace llvm {
 
 class Module;
 
+extern cl::opt<int> SampleHotCallSiteThreshold;
+extern cl::opt<int> SampleColdCallSiteThreshold;
+extern cl::opt<int> ProfileInlineGrowthLimit;
+extern cl::opt<int> ProfileInlineLimitMin;
+extern cl::opt<int> ProfileInlineLimitMax;
+extern cl::opt<bool> SortProfiledSCC;
+
 namespace vfs {
 class FileSystem;
 } // namespace vfs
 
 /// The sample profiler data loader pass.
 class SampleProfileLoaderPass : public PassInfoMixin<SampleProfileLoaderPass> {
 public:
   SampleProfileLoaderPass(

llvm/include/llvm/Transforms/Instrumentation/PGOInstrumentation.h

 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_TRANSFORMS_INSTRUMENTATION_PGOINSTRUMENTATION_H
 #define LLVM_TRANSFORMS_INSTRUMENTATION_PGOINSTRUMENTATION_H
 
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/IntrusiveRefCntPtr.h"
 #include "llvm/IR/PassManager.h"
+#include "llvm/Support/CommandLine.h"
 #include <cstdint>
 #include <string>
 
 namespace llvm {
 
+extern cl::opt<bool> DebugInfoCorrelate;
+
 class Function;
 class Instruction;
 class Module;
 
 namespace vfs {
 class FileSystem;
 } // namespace vfs
 

llvm/lib/Analysis/ProfileSummaryInfo.cpp

 #include "llvm/IR/Module.h"
 #include "llvm/IR/ProfileSummary.h"
 #include "llvm/InitializePasses.h"
 #include "llvm/ProfileData/ProfileCommon.h"
 #include "llvm/Support/CommandLine.h"
 #include <optional>
 using namespace llvm;
 
-// Knobs for profile summary based thresholds.
-namespace llvm {
-extern cl::opt<int> ProfileSummaryCutoffHot;
-extern cl::opt<int> ProfileSummaryCutoffCold;
-extern cl::opt<unsigned> ProfileSummaryHugeWorkingSetSizeThreshold;
-extern cl::opt<unsigned> ProfileSummaryLargeWorkingSetSizeThreshold;
-extern cl::opt<int> ProfileSummaryHotCount;
-extern cl::opt<int> ProfileSummaryColdCount;
-} // namespace llvm
-
 static cl::opt<bool> PartialProfile(
     "partial-profile", cl::Hidden, cl::init(false),
     cl::desc("Specify the current profile is used as a partial profile."));
 
 cl::opt<bool> ScalePartialSampleProfileWorkingSetSize(
     "scale-partial-sample-profile-working-set-size", cl::Hidden, cl::init(true),
     cl::desc(
         "If true, scale the working set size of the partial sample profile "

llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp

 #include "llvm/Pass.h"
 #include "llvm/ProfileData/InstrProf.h"
 #include "llvm/ProfileData/InstrProfCorrelator.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Error.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/TargetParser/Triple.h"
+#include "llvm/Transforms/Instrumentation/PGOInstrumentation.h"
 #include "llvm/Transforms/Utils/ModuleUtils.h"
 #include "llvm/Transforms/Utils/SSAUpdater.h"
 #include <algorithm>
 #include <cassert>
 #include <cstdint>
 #include <string>
 
 using namespace llvm;

llvm/lib/Transforms/Instrumentation/PGOInstrumentation.cpp

 // Command line option to turn on CFG dot dump after profile annotation.
 // Defined in Analysis/BlockFrequencyInfo.cpp:  -pgo-view-counts
 extern cl::opt<PGOViewCountsType> PGOViewCounts;
 
 // Command line option to specify the name of the function for CFG dump
 // Defined in Analysis/BlockFrequencyInfo.cpp:  -view-bfi-func-name=
 extern cl::opt<std::string> ViewBlockFreqFuncName;
 
-extern cl::opt<bool> DebugInfoCorrelate;
 } // namespace llvm
 
 static cl::opt<bool>
     PGOOldCFGHashing("pgo-instr-old-cfg-hashing", cl::init(false), cl::Hidden,
                      cl::desc("Use the old CFG function hashing"));
 
 // Return a string describing the branch condition that can be
 // used in static branch probability heuristics:

llvm/tools/llvm-profgen/CSPreInliner.cpp

 //===-- CSPreInliner.cpp - Profile guided preinliner -------------- C++ -*-===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 #include "CSPreInliner.h"
 #include "ProfiledBinary.h"
 #include "llvm/ADT/SCCIterator.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/DebugInfo/Symbolize/SymbolizableModule.h"
+#include "llvm/Transforms/IPO/SampleProfile.h"
 #include <cstdint>
 #include <queue>
 
 #define DEBUG_TYPE "cs-preinliner"
 
 using namespace llvm;
 using namespace sampleprof;
 
 STATISTIC(PreInlNumCSInlined,
           "Number of functions inlined with context sensitive profile");
 STATISTIC(PreInlNumCSNotInlined,
           "Number of functions not inlined with context sensitive profile");
 STATISTIC(PreInlNumCSInlinedHitMinLimit,
           "Number of functions with FDO inline stopped due to min size limit");
 STATISTIC(PreInlNumCSInlinedHitMaxLimit,
           "Number of functions with FDO inline stopped due to max size limit");
 STATISTIC(
     PreInlNumCSInlinedHitGrowthLimit,
     "Number of functions with FDO inline stopped due to growth size limit");
 
 // The switches specify inline thresholds used in SampleProfileLoader inlining.
 // TODO: the actual threshold to be tuned here because the size here is based
 // on machine code not LLVM IR.
 namespace llvm {
-extern cl::opt<int> SampleHotCallSiteThreshold;
-extern cl::opt<int> SampleColdCallSiteThreshold;
-extern cl::opt<int> ProfileInlineGrowthLimit;
-extern cl::opt<int> ProfileInlineLimitMin;
-extern cl::opt<int> ProfileInlineLimitMax;
-extern cl::opt<bool> SortProfiledSCC;
-
 cl::opt<bool> EnableCSPreInliner(
     "csspgo-preinliner", cl::Hidden, cl::init(true),
     cl::desc("Run a global pre-inliner to merge context profile based on "
              "estimated global top-down inline decisions"));
 
 cl::opt<bool> UseContextCostForPreInliner(
     "use-context-cost-for-preinliner", cl::Hidden, cl::init(true),
     cl::desc("Use context-sensitive byte size cost for preinliner decisions"));