From 7ff19db5823c50764fa377576e64f973c94f47f4 Mon Sep 17 00:00:00 2001
From: Betul Buyukkurt <betulb@codeaurora.org>
Date: Sat, 23 Jan 2016 22:50:44 +0000
Subject: Clang changes for value profiling

Differential Revision: http://reviews.llvm.org/D8940



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@258650 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/CodeGenPGO.h | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

(limited to 'lib/CodeGen/CodeGenPGO.h')

diff --git a/lib/CodeGen/CodeGenPGO.h b/lib/CodeGen/CodeGenPGO.h
index 6bf29ecaa7..a181cb958c 100644
--- a/lib/CodeGen/CodeGenPGO.h
+++ b/lib/CodeGen/CodeGenPGO.h
@@ -19,6 +19,7 @@
 #include "CodeGenTypes.h"
 #include "clang/Frontend/CodeGenOptions.h"
 #include "llvm/ADT/StringMap.h"
+#include "llvm/ProfileData/InstrProfReader.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include <memory>
 
@@ -32,10 +33,12 @@ private:
   std::string FuncName;
   llvm::GlobalVariable *FuncNameVar;
 
+  unsigned NumValueSites[llvm::IPVK_Last + 1];
   unsigned NumRegionCounters;
   uint64_t FunctionHash;
   std::unique_ptr<llvm::DenseMap<const Stmt *, unsigned>> RegionCounterMap;
   std::unique_ptr<llvm::DenseMap<const Stmt *, uint64_t>> StmtCountMap;
+  std::unique_ptr<llvm::InstrProfRecord> ProfRecord;
   std::vector<uint64_t> RegionCounts;
   uint64_t CurrentRegionCount;
   /// \brief A flag that is set to true when this function doesn't need
@@ -44,8 +47,8 @@ private:
 
 public:
   CodeGenPGO(CodeGenModule &CGM)
-      : CGM(CGM), NumRegionCounters(0), FunctionHash(0), CurrentRegionCount(0),
-        SkipCoverageMapping(false) {}
+      : CGM(CGM), NumValueSites{0}, NumRegionCounters(0),
+        FunctionHash(0), CurrentRegionCount(0), SkipCoverageMapping(false) {}
 
   /// Whether or not we have PGO region data for the current function. This is
   /// false both when we have no data at all and when our data has been
@@ -87,6 +90,9 @@ public:
   /// for an unused declaration.
   void emitEmptyCounterMapping(const Decl *D, StringRef FuncName,
                                llvm::GlobalValue::LinkageTypes Linkage);
+  // Insert instrumentation or attach profile metadata at value sites
+  void valueProfile(CGBuilderTy &Builder, uint32_t ValueKind,
+                    llvm::Instruction *ValueSite, llvm::Value *ValuePtr);
 private:
   void setFuncName(llvm::Function *Fn);
   void setFuncName(StringRef Name, llvm::GlobalValue::LinkageTypes Linkage);
-- 
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