[PGO] Profile interface cleanup

  - Remove unused valuemapper parameter
  - add totalcount optional parameter





git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@259756 91177308-0d34-0410-b5e6-96231b3b80d8

Author: david-xl

include/llvm/ProfileData/InstrProf.h

@@ -25,6 +25,7 @@
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/ErrorOr.h"
 #include "llvm/Support/MD5.h"
+#include "llvm/Support/MathExtras.h"
 #include <cstdint>
 #include <list>
 #include <map>
@@ -410,13 +411,17 @@ struct InstrProfRecord {
   /// site: Site.
   inline uint32_t getNumValueDataForSite(uint32_t ValueKind,
                                          uint32_t Site) const;
-  /// Return the array of profiled values at \p Site.
+  /// Return the array of profiled values at \p Site. If \p TotalC
+  /// is not null, the total count of all target values at this site
+  /// will be stored in \c *TotalC.
   inline std::unique_ptr<InstrProfValueData[]>
   getValueForSite(uint32_t ValueKind, uint32_t Site,
-                  uint64_t (*ValueMapper)(uint32_t, uint64_t) = nullptr) const;
-  inline void
-  getValueForSite(InstrProfValueData Dest[], uint32_t ValueKind, uint32_t Site,
-                  uint64_t (*ValueMapper)(uint32_t, uint64_t) = nullptr) const;
+                  uint64_t *TotalC = 0) const;
+  /// Get the target value/counts of kind \p ValueKind collected at site
+  /// \p Site and store the result in array \p Dest. Return the total
+  /// counts of all target values at this site.
+  inline uint64_t getValueForSite(InstrProfValueData Dest[], uint32_t ValueKind,
+                                  uint32_t Site) const;
   /// Reserve space for NumValueSites sites.
   inline void reserveSites(uint32_t ValueKind, uint32_t NumValueSites);
   /// Add ValueData for ValueKind at value Site.
@@ -505,29 +510,35 @@ uint32_t InstrProfRecord::getNumValueDataForSite(uint32_t ValueKind,
   return getValueSitesForKind(ValueKind)[Site].ValueData.size();
 }
 
-std::unique_ptr<InstrProfValueData[]> InstrProfRecord::getValueForSite(
-    uint32_t ValueKind, uint32_t Site,
-    uint64_t (*ValueMapper)(uint32_t, uint64_t)) const {
+std::unique_ptr<InstrProfValueData[]>
+InstrProfRecord::getValueForSite(uint32_t ValueKind, uint32_t Site,
+                                 uint64_t *TotalC) const {
+  uint64_t Dummy;
+  uint64_t &TotalCount = (TotalC == 0 ? Dummy : *TotalC);
   uint32_t N = getNumValueDataForSite(ValueKind, Site);
-  if (N == 0)
+  if (N == 0) {
+    TotalCount = 0;
     return std::unique_ptr<InstrProfValueData[]>(nullptr);
+  }
 
   auto VD = llvm::make_unique<InstrProfValueData[]>(N);
-  getValueForSite(VD.get(), ValueKind, Site, ValueMapper);
+  TotalCount = getValueForSite(VD.get(), ValueKind, Site);
 
   return VD;
 }
 
-void InstrProfRecord::getValueForSite(InstrProfValueData Dest[],
-                                      uint32_t ValueKind, uint32_t Site,
-                                      uint64_t (*ValueMapper)(uint32_t,
-                                                              uint64_t)) const {
+uint64_t InstrProfRecord::getValueForSite(InstrProfValueData Dest[],
+                                          uint32_t ValueKind,
+                                          uint32_t Site) const {
   uint32_t I = 0;
+  uint64_t TotalCount = 0;
   for (auto V : getValueSitesForKind(ValueKind)[Site].ValueData) {
-    Dest[I].Value = ValueMapper ? ValueMapper(ValueKind, V.Value) : V.Value;
+    Dest[I].Value = V.Value;
     Dest[I].Count = V.Count;
+    TotalCount = SaturatingAdd(TotalCount, V.Count);
     I++;
   }
+  return TotalCount;
 }
 
 void InstrProfRecord::reserveSites(uint32_t ValueKind, uint32_t NumValueSites) {

include/llvm/ProfileData/InstrProfData.inc

@@ -343,7 +343,7 @@ typedef struct ValueProfRecordClosure {
    */
   uint64_t (*RemapValueData)(uint32_t, uint64_t Value);
   void (*GetValueForSite)(const void *R, InstrProfValueData *Dst, uint32_t K,
-                          uint32_t S, uint64_t (*Mapper)(uint32_t, uint64_t));
+                          uint32_t S);
   ValueProfData *(*AllocValueProfData)(size_t TotalSizeInBytes);
 } ValueProfRecordClosure;
 
@@ -506,8 +506,7 @@ void serializeValueProfRecordFrom(ValueProfRecord *This,
   for (S = 0; S < NumValueSites; S++) {
     uint32_t ND = Closure->GetNumValueDataForSite(Record, ValueKind, S);
     This->SiteCountArray[S] = ND;
-    Closure->GetValueForSite(Record, DstVD, ValueKind, S,
-                             Closure->RemapValueData);
+    Closure->GetValueForSite(Record, DstVD, ValueKind, S);
     DstVD += ND;
   }
 }
@@ -617,7 +616,7 @@ uint32_t getNumValueDataRT(const void *R, uint32_t VK) {
 }
 
 void getValueForSiteRT(const void *R, InstrProfValueData *Dst, uint32_t VK,
-                       uint32_t S, uint64_t (*Mapper)(uint32_t, uint64_t)) {
+                       uint32_t S) {
   unsigned I, N = 0;
   const ValueProfRuntimeRecord *Record = (const ValueProfRuntimeRecord *)R;
   N = getNumValueDataForSiteRT(R, VK, S);

lib/ProfileData/InstrProf.cpp

@@ -430,10 +430,9 @@ uint32_t getNumValueDataForSiteInstrProf(const void *R, uint32_t VK,
 }
 
 void getValueForSiteInstrProf(const void *R, InstrProfValueData *Dst,
-                              uint32_t K, uint32_t S,
-                              uint64_t (*Mapper)(uint32_t, uint64_t)) {
-  return reinterpret_cast<const InstrProfRecord *>(R)->getValueForSite(
-      Dst, K, S, Mapper);
+                              uint32_t K, uint32_t S) {
+  reinterpret_cast<const InstrProfRecord *>(R)->getValueForSite(Dst, K, S);
+  return;
 }
 
 ValueProfData *allocValueProfDataInstrProf(size_t TotalSizeInBytes) {

unittests/ProfileData/InstrProfTest.cpp

@@ -211,12 +211,14 @@ TEST_P(MaybeSparseInstrProfTest, get_icall_data_read_write) {
   ASSERT_EQ(2U, R.get().getNumValueDataForSite(IPVK_IndirectCallTarget, 2));
   ASSERT_EQ(1U, R.get().getNumValueDataForSite(IPVK_IndirectCallTarget, 3));
 
+  uint64_t TotalC;
   std::unique_ptr<InstrProfValueData[]> VD =
-      R.get().getValueForSite(IPVK_IndirectCallTarget, 0);
+      R.get().getValueForSite(IPVK_IndirectCallTarget, 0, &TotalC);
 
   ASSERT_EQ(3U, VD[0].Count);
   ASSERT_EQ(2U, VD[1].Count);
   ASSERT_EQ(1U, VD[2].Count);
+  ASSERT_EQ(6U, TotalC);
 
   ASSERT_EQ(StringRef((const char *)VD[0].Value, 7), StringRef("callee3"));
   ASSERT_EQ(StringRef((const char *)VD[1].Value, 7), StringRef("callee2"));
@@ -258,11 +260,13 @@ TEST_P(MaybeSparseInstrProfTest, get_icall_data_read_write_with_weight) {
   ASSERT_EQ(2U, R.get().getNumValueDataForSite(IPVK_IndirectCallTarget, 2));
   ASSERT_EQ(1U, R.get().getNumValueDataForSite(IPVK_IndirectCallTarget, 3));
 
+  uint64_t TotalC;
   std::unique_ptr<InstrProfValueData[]> VD =
-      R.get().getValueForSite(IPVK_IndirectCallTarget, 0);
+      R.get().getValueForSite(IPVK_IndirectCallTarget, 0, &TotalC);
   ASSERT_EQ(30U, VD[0].Count);
   ASSERT_EQ(20U, VD[1].Count);
   ASSERT_EQ(10U, VD[2].Count);
+  ASSERT_EQ(60U, TotalC);
 
   ASSERT_EQ(StringRef((const char *)VD[0].Value, 7), StringRef("callee3"));
   ASSERT_EQ(StringRef((const char *)VD[1].Value, 7), StringRef("callee2"));