diff --git a/compiler-rt/include/profile/InstrProfData.inc b/compiler-rt/include/profile/InstrProfData.inc
--- a/compiler-rt/include/profile/InstrProfData.inc
+++ b/compiler-rt/include/profile/InstrProfData.inc
@@ -127,6 +127,7 @@
 #endif
 INSTR_PROF_RAW_HEADER(uint64_t, Magic, __llvm_profile_get_magic())
 INSTR_PROF_RAW_HEADER(uint64_t, Version, __llvm_profile_get_version())
+INSTR_PROF_RAW_HEADER(uint64_t, BinaryIdsSize, __llvm_write_binary_ids(NULL))
 INSTR_PROF_RAW_HEADER(uint64_t, DataSize, DataSize)
 INSTR_PROF_RAW_HEADER(uint64_t, PaddingBytesBeforeCounters, PaddingBytesBeforeCounters)
 INSTR_PROF_RAW_HEADER(uint64_t, CountersSize, CountersSize)
@@ -136,7 +137,6 @@
                       (uintptr_t)CountersBegin - (uintptr_t)DataBegin)
 INSTR_PROF_RAW_HEADER(uint64_t, NamesDelta, (uintptr_t)NamesBegin)
 INSTR_PROF_RAW_HEADER(uint64_t, ValueKindLast, IPVK_Last)
-INSTR_PROF_RAW_HEADER(uint64_t, BinaryIdsSize, __llvm_write_binary_ids(NULL))
 #undef INSTR_PROF_RAW_HEADER
 /* INSTR_PROF_RAW_HEADER  end */
 
@@ -645,7 +645,7 @@
         (uint64_t)'f' << 16 | (uint64_t)'R' << 8 | (uint64_t)129
 
 /* Raw profile format version (start from 1). */
-#define INSTR_PROF_RAW_VERSION 6
+#define INSTR_PROF_RAW_VERSION 7
 /* Indexed profile format version (start from 1). */
 #define INSTR_PROF_INDEX_VERSION 7
 /* Coverage mapping format version (start from 0). */
diff --git a/compiler-rt/lib/profile/InstrProfilingBuffer.c b/compiler-rt/lib/profile/InstrProfilingBuffer.c
--- a/compiler-rt/lib/profile/InstrProfilingBuffer.c
+++ b/compiler-rt/lib/profile/InstrProfilingBuffer.c
@@ -116,7 +116,7 @@
       DataSize, CountersSize, NamesSize, &PaddingBytesBeforeCounters,
       &PaddingBytesAfterCounters, &PaddingBytesAfterNames);
 
-  return sizeof(__llvm_profile_header) +
+  return sizeof(__llvm_profile_header) + __llvm_write_binary_ids(NULL) +
          (DataSize * sizeof(__llvm_profile_data)) + PaddingBytesBeforeCounters +
          (CountersSize * sizeof(uint64_t)) + PaddingBytesAfterCounters +
          NamesSize + PaddingBytesAfterNames;
diff --git a/compiler-rt/lib/profile/InstrProfilingMerge.c b/compiler-rt/lib/profile/InstrProfilingMerge.c
--- a/compiler-rt/lib/profile/InstrProfilingMerge.c
+++ b/compiler-rt/lib/profile/InstrProfilingMerge.c
@@ -22,6 +22,7 @@
 COMPILER_RT_VISIBILITY
 uint64_t lprofGetLoadModuleSignature() {
   /* A very fast way to compute a module signature.  */
+  uint64_t Version = __llvm_profile_get_version();
   uint64_t CounterSize = (uint64_t)(__llvm_profile_end_counters() -
                                     __llvm_profile_begin_counters());
   uint64_t DataSize = __llvm_profile_get_data_size(__llvm_profile_begin_data(),
@@ -33,7 +34,7 @@
   const __llvm_profile_data *FirstD = __llvm_profile_begin_data();
 
   return (NamesSize << 40) + (CounterSize << 30) + (DataSize << 20) +
-         (NumVnodes << 10) + (DataSize > 0 ? FirstD->NameRef : 0);
+         (NumVnodes << 10) + (DataSize > 0 ? FirstD->NameRef : 0) + Version;
 }
 
 /* Returns 1 if profile is not structurally compatible.  */
@@ -44,7 +45,8 @@
   __llvm_profile_header *Header = (__llvm_profile_header *)ProfileData;
   __llvm_profile_data *SrcDataStart, *SrcDataEnd, *SrcData, *DstData;
   SrcDataStart =
-      (__llvm_profile_data *)(ProfileData + sizeof(__llvm_profile_header));
+      (__llvm_profile_data *)(ProfileData + sizeof(__llvm_profile_header) +
+                              Header->BinaryIdsSize);
   SrcDataEnd = SrcDataStart + Header->DataSize;
 
   if (ProfileSize < sizeof(__llvm_profile_header))
@@ -63,7 +65,7 @@
       Header->ValueKindLast != IPVK_Last)
     return 1;
 
-  if (ProfileSize < sizeof(__llvm_profile_header) +
+  if (ProfileSize < sizeof(__llvm_profile_header) + Header->BinaryIdsSize +
                         Header->DataSize * sizeof(__llvm_profile_data) +
                         Header->NamesSize + Header->CountersSize)
     return 1;
@@ -100,7 +102,8 @@
   uintptr_t CountersDelta = Header->CountersDelta;
 
   SrcDataStart =
-      (__llvm_profile_data *)(ProfileData + sizeof(__llvm_profile_header));
+      (__llvm_profile_data *)(ProfileData + sizeof(__llvm_profile_header) +
+                              Header->BinaryIdsSize);
   SrcDataEnd = SrcDataStart + Header->DataSize;
   SrcCountersStart = (uint64_t *)SrcDataEnd;
   SrcNameStart = (const char *)(SrcCountersStart + Header->CountersSize);
diff --git a/compiler-rt/test/profile/Linux/binary-id.c b/compiler-rt/test/profile/Linux/binary-id.c
--- a/compiler-rt/test/profile/Linux/binary-id.c
+++ b/compiler-rt/test/profile/Linux/binary-id.c
@@ -10,6 +10,13 @@
 // RUN: llvm-profdata show --binary-ids  %t.profraw > %t.profraw.out
 // RUN: FileCheck %s --check-prefix=BINARY-ID-RAW-PROF < %t.profraw.out
 
+// RUN: rm -rf %t.profdir
+// RUN: env LLVM_PROFILE_FILE=%t.profdir/default_%m.profraw %run %t
+// RUN: env LLVM_PROFILE_FILE=%t.profdir/default_%m.profraw %run %t
+// RUN: env LLVM_PROFILE_FILE=%t.profdir/default_%m.profraw %run %t
+// RUN: llvm-profdata show --binary-ids  %t.profdir/default_*.profraw > %t.profraw.out
+// RUN: FileCheck %s --check-prefix=BINARY-ID-MERGE-PROF < %t.profraw.out
+
 void foo() {
 }
 
@@ -34,3 +41,10 @@
 // BINARY-ID-RAW-PROF-NEXT: Maximum internal block count: 0
 // BINARY-ID-RAW-PROF-NEXT: Binary IDs:
 // BINARY-ID-RAW-PROF-NEXT: {{[0-9a-f]+}}
+
+// BINARY-ID-MERGE-PROF: Instrumentation level: Front-end
+// BINARY-ID-MERGE-PROF-NEXT: Total functions: 3
+// BINARY-ID-MERGE-PROF-NEXT: Maximum function count: 3
+// BINARY-ID-MERGE-PROF-NEXT: Maximum internal block count: 0
+// BINARY-ID-MERGE-PROF-NEXT: Binary IDs:
+// BINARY-ID-MERGE-PROF-NEXT: {{[0-9a-f]+}}
diff --git a/llvm/include/llvm/ProfileData/InstrProf.h b/llvm/include/llvm/ProfileData/InstrProf.h
--- a/llvm/include/llvm/ProfileData/InstrProf.h
+++ b/llvm/include/llvm/ProfileData/InstrProf.h
@@ -1104,6 +1104,7 @@
 // Version 5: Bit 60 of FuncHash is reserved for the flag for the context
 // sensitive records.
 // Version 6: Added binary id.
+// Version 7: Reorder binary id and include version in signature.
 const uint64_t Version = INSTR_PROF_RAW_VERSION;
 
 template <class IntPtrT> inline uint64_t getMagic();
diff --git a/llvm/include/llvm/ProfileData/InstrProfData.inc b/llvm/include/llvm/ProfileData/InstrProfData.inc
--- a/llvm/include/llvm/ProfileData/InstrProfData.inc
+++ b/llvm/include/llvm/ProfileData/InstrProfData.inc
@@ -127,6 +127,7 @@
 #endif
 INSTR_PROF_RAW_HEADER(uint64_t, Magic, __llvm_profile_get_magic())
 INSTR_PROF_RAW_HEADER(uint64_t, Version, __llvm_profile_get_version())
+INSTR_PROF_RAW_HEADER(uint64_t, BinaryIdsSize, __llvm_write_binary_ids(NULL))
 INSTR_PROF_RAW_HEADER(uint64_t, DataSize, DataSize)
 INSTR_PROF_RAW_HEADER(uint64_t, PaddingBytesBeforeCounters, PaddingBytesBeforeCounters)
 INSTR_PROF_RAW_HEADER(uint64_t, CountersSize, CountersSize)
@@ -136,7 +137,6 @@
                       (uintptr_t)CountersBegin - (uintptr_t)DataBegin)
 INSTR_PROF_RAW_HEADER(uint64_t, NamesDelta, (uintptr_t)NamesBegin)
 INSTR_PROF_RAW_HEADER(uint64_t, ValueKindLast, IPVK_Last)
-INSTR_PROF_RAW_HEADER(uint64_t, BinaryIdsSize, __llvm_write_binary_ids(NULL))
 #undef INSTR_PROF_RAW_HEADER
 /* INSTR_PROF_RAW_HEADER  end */
 
@@ -645,7 +645,7 @@
         (uint64_t)'f' << 16 | (uint64_t)'R' << 8 | (uint64_t)129
 
 /* Raw profile format version (start from 1). */
-#define INSTR_PROF_RAW_VERSION 6
+#define INSTR_PROF_RAW_VERSION 7
 /* Indexed profile format version (start from 1). */
 #define INSTR_PROF_INDEX_VERSION 7
 /* Coverage mapping format version (start from 0). */
diff --git a/llvm/lib/ProfileData/InstrProfReader.cpp b/llvm/lib/ProfileData/InstrProfReader.cpp
--- a/llvm/lib/ProfileData/InstrProfReader.cpp
+++ b/llvm/lib/ProfileData/InstrProfReader.cpp
@@ -366,6 +366,7 @@
   if (GET_VERSION(Version) != RawInstrProf::Version)
     return error(instrprof_error::unsupported_version);
 
+  BinaryIdsSize = swap(Header.BinaryIdsSize);
   CountersDelta = swap(Header.CountersDelta);
   NamesDelta = swap(Header.NamesDelta);
   auto DataSize = swap(Header.DataSize);
@@ -374,7 +375,6 @@
   auto PaddingBytesAfterCounters = swap(Header.PaddingBytesAfterCounters);
   NamesSize = swap(Header.NamesSize);
   ValueKindLast = swap(Header.ValueKindLast);
-  BinaryIdsSize = swap(Header.BinaryIdsSize);
 
   auto DataSizeInBytes = DataSize * sizeof(RawInstrProf::ProfileData<IntPtrT>);
   auto PaddingSize = getNumPaddingBytes(NamesSize);
diff --git a/llvm/test/tools/llvm-profdata/Inputs/c-general.profraw b/llvm/test/tools/llvm-profdata/Inputs/c-general.profraw
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/llvm/test/tools/llvm-profdata/Inputs/compressed.profraw b/llvm/test/tools/llvm-profdata/Inputs/compressed.profraw
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/llvm/test/tools/llvm-profdata/malformed-ptr-to-counter-array.test b/llvm/test/tools/llvm-profdata/malformed-ptr-to-counter-array.test
--- a/llvm/test/tools/llvm-profdata/malformed-ptr-to-counter-array.test
+++ b/llvm/test/tools/llvm-profdata/malformed-ptr-to-counter-array.test
@@ -2,16 +2,17 @@
 //
 // INSTR_PROF_RAW_HEADER(uint64_t, Magic, __llvm_profile_get_magic())
 // INSTR_PROF_RAW_HEADER(uint64_t, Version, __llvm_profile_get_version())
+// INSTR_PROF_RAW_HEADER(uint64_t, BinaryIdsSize, __llvm_write_binary_ids(NULL))
 // INSTR_PROF_RAW_HEADER(uint64_t, DataSize, DataSize)
 // INSTR_PROF_RAW_HEADER(uint64_t, CountersSize, CountersSize)
 // INSTR_PROF_RAW_HEADER(uint64_t, NamesSize,  NamesSize)
 // INSTR_PROF_RAW_HEADER(uint64_t, CountersDelta, (uintptr_t)CountersBegin)
 // INSTR_PROF_RAW_HEADER(uint64_t, NamesDelta, (uintptr_t)NamesBegin)
 // INSTR_PROF_RAW_HEADER(uint64_t, ValueKindLast, IPVK_Last)
-// INSTR_PROF_RAW_HEADER(uint64_t, BinaryIdsSize, __llvm_write_binary_ids(NULL))
 
 RUN: printf '\201rforpl\377' > %t.profraw
-RUN: printf '\6\0\0\0\0\0\0\0' >> %t.profraw
+RUN: printf '\7\0\0\0\0\0\0\0' >> %t.profraw
+RUN: printf '\0\0\0\0\0\0\0\0' >> %t.profraw
 RUN: printf '\1\0\0\0\0\0\0\0' >> %t.profraw
 RUN: printf '\0\0\0\0\0\0\0\0' >> %t.profraw
 RUN: printf '\2\0\0\0\0\0\0\0' >> %t.profraw
@@ -20,7 +21,6 @@
 RUN: printf '\0\0\6\0\1\0\0\0' >> %t.profraw
 RUN: printf '\0\0\6\0\2\0\0\0' >> %t.profraw
 RUN: printf '\0\0\0\0\0\0\0\0' >> %t.profraw
-RUN: printf '\0\0\0\0\0\0\0\0' >> %t.profraw
 
 // Data Section
 //
diff --git a/llvm/test/tools/llvm-profdata/raw-32-bits-be.test b/llvm/test/tools/llvm-profdata/raw-32-bits-be.test
--- a/llvm/test/tools/llvm-profdata/raw-32-bits-be.test
+++ b/llvm/test/tools/llvm-profdata/raw-32-bits-be.test
@@ -1,5 +1,6 @@
 RUN: printf '\377lprofR\201' > %t
-RUN: printf '\0\0\0\0\0\0\0\6' >> %t
+RUN: printf '\0\0\0\0\0\0\0\7' >> %t
+RUN: printf '\0\0\0\0\0\0\0\0' >> %t
 RUN: printf '\0\0\0\0\0\0\0\2' >> %t
 RUN: printf '\0\0\0\0\0\0\0\0' >> %t
 RUN: printf '\0\0\0\0\0\0\0\3' >> %t
@@ -8,7 +9,6 @@
 RUN: printf '\0\0\0\0\1\0\0\0' >> %t
 RUN: printf '\0\0\0\0\2\0\0\0' >> %t
 RUN: printf '\0\0\0\0\0\0\0\0' >> %t
-RUN: printf '\0\0\0\0\0\0\0\0' >> %t
 
 RUN: printf '\134\370\302\114\333\030\275\254' >> %t
 RUN: printf '\0\0\0\0\0\0\0\1' >> %t
diff --git a/llvm/test/tools/llvm-profdata/raw-32-bits-le.test b/llvm/test/tools/llvm-profdata/raw-32-bits-le.test
--- a/llvm/test/tools/llvm-profdata/raw-32-bits-le.test
+++ b/llvm/test/tools/llvm-profdata/raw-32-bits-le.test
@@ -1,5 +1,6 @@
 RUN: printf '\201Rforpl\377' > %t
-RUN: printf '\6\0\0\0\0\0\0\0' >> %t
+RUN: printf '\7\0\0\0\0\0\0\0' >> %t
+RUN: printf '\0\0\0\0\0\0\0\0' >> %t
 RUN: printf '\2\0\0\0\0\0\0\0' >> %t
 RUN: printf '\0\0\0\0\0\0\0\0' >> %t
 RUN: printf '\3\0\0\0\0\0\0\0' >> %t
@@ -8,7 +9,6 @@
 RUN: printf '\0\0\0\1\0\0\0\0' >> %t
 RUN: printf '\0\0\0\2\0\0\0\0' >> %t
 RUN: printf '\0\0\0\0\0\0\0\0' >> %t
-RUN: printf '\0\0\0\0\0\0\0\0' >> %t
 
 RUN: printf '\254\275\030\333\114\302\370\134' >> %t
 RUN: printf '\1\0\0\0\0\0\0\0' >> %t
diff --git a/llvm/test/tools/llvm-profdata/raw-64-bits-be.test b/llvm/test/tools/llvm-profdata/raw-64-bits-be.test
--- a/llvm/test/tools/llvm-profdata/raw-64-bits-be.test
+++ b/llvm/test/tools/llvm-profdata/raw-64-bits-be.test
@@ -1,5 +1,6 @@
 RUN: printf '\377lprofr\201' > %t
-RUN: printf '\0\0\0\0\0\0\0\6' >> %t
+RUN: printf '\0\0\0\0\0\0\0\7' >> %t
+RUN: printf '\0\0\0\0\0\0\0\0' >> %t
 RUN: printf '\0\0\0\0\0\0\0\2' >> %t
 RUN: printf '\0\0\0\0\0\0\0\0' >> %t
 RUN: printf '\0\0\0\0\0\0\0\3' >> %t
@@ -8,7 +9,6 @@
 RUN: printf '\0\0\0\1\0\4\0\0' >> %t
 RUN: printf '\0\0\0\2\0\4\0\0' >> %t
 RUN: printf '\0\0\0\0\0\0\0\0' >> %t
-RUN: printf '\0\0\0\0\0\0\0\0' >> %t
 
 RUN: printf '\134\370\302\114\333\030\275\254' >> %t
 RUN: printf '\0\0\0\0\0\0\0\1' >> %t
diff --git a/llvm/test/tools/llvm-profdata/raw-64-bits-le.test b/llvm/test/tools/llvm-profdata/raw-64-bits-le.test
--- a/llvm/test/tools/llvm-profdata/raw-64-bits-le.test
+++ b/llvm/test/tools/llvm-profdata/raw-64-bits-le.test
@@ -1,5 +1,6 @@
 RUN: printf '\201rforpl\377' > %t
-RUN: printf '\6\0\0\0\0\0\0\0' >> %t
+RUN: printf '\7\0\0\0\0\0\0\0' >> %t
+RUN: printf '\0\0\0\0\0\0\0\0' >> %t
 RUN: printf '\2\0\0\0\0\0\0\0' >> %t
 RUN: printf '\0\0\0\0\0\0\0\0' >> %t
 RUN: printf '\3\0\0\0\0\0\0\0' >> %t
@@ -8,7 +9,6 @@
 RUN: printf '\0\0\4\0\1\0\0\0' >> %t
 RUN: printf '\0\0\4\0\2\0\0\0' >> %t
 RUN: printf '\0\0\0\0\0\0\0\0' >> %t
-RUN: printf '\0\0\0\0\0\0\0\0' >> %t
 
 RUN: printf '\254\275\030\333\114\302\370\134' >> %t
 RUN: printf '\1\0\0\0\0\0\0\0' >> %t
diff --git a/llvm/test/tools/llvm-profdata/raw-two-profiles.test b/llvm/test/tools/llvm-profdata/raw-two-profiles.test
--- a/llvm/test/tools/llvm-profdata/raw-two-profiles.test
+++ b/llvm/test/tools/llvm-profdata/raw-two-profiles.test
@@ -1,5 +1,6 @@
 RUN: printf '\201rforpl\377' > %t-foo.profraw
-RUN: printf '\6\0\0\0\0\0\0\0' >> %t-foo.profraw
+RUN: printf '\7\0\0\0\0\0\0\0' >> %t-foo.profraw
+RUN: printf '\0\0\0\0\0\0\0\0' >> %t-foo.profraw
 RUN: printf '\1\0\0\0\0\0\0\0' >> %t-foo.profraw
 RUN: printf '\0\0\0\0\0\0\0\0' >> %t-foo.profraw
 RUN: printf '\1\0\0\0\0\0\0\0' >> %t-foo.profraw
@@ -8,7 +9,6 @@
 RUN: printf '\0\0\4\0\1\0\0\0' >> %t-foo.profraw
 RUN: printf '\0\0\4\0\2\0\0\0' >> %t-foo.profraw
 RUN: printf '\0\0\0\0\0\0\0\0' >> %t-foo.profraw
-RUN: printf '\0\0\0\0\0\0\0\0' >> %t-foo.profraw
 
 RUN: printf '\254\275\030\333\114\302\370\134' >> %t-foo.profraw
 RUN: printf '\1\0\0\0\0\0\0\0' >> %t-foo.profraw
@@ -21,7 +21,8 @@
 RUN: printf '\3\0foo\0\0\0' >> %t-foo.profraw
 
 RUN: printf '\201rforpl\377' > %t-bar.profraw
-RUN: printf '\6\0\0\0\0\0\0\0' >> %t-bar.profraw
+RUN: printf '\7\0\0\0\0\0\0\0' >> %t-bar.profraw
+RUN: printf '\0\0\0\0\0\0\0\0' >> %t-bar.profraw
 RUN: printf '\1\0\0\0\0\0\0\0' >> %t-bar.profraw
 RUN: printf '\0\0\0\0\0\0\0\0' >> %t-bar.profraw
 RUN: printf '\2\0\0\0\0\0\0\0' >> %t-bar.profraw
@@ -30,7 +31,6 @@
 RUN: printf '\0\0\6\0\1\0\0\0' >> %t-bar.profraw
 RUN: printf '\0\0\6\0\2\0\0\0' >> %t-bar.profraw
 RUN: printf '\0\0\0\0\0\0\0\0' >> %t-bar.profraw
-RUN: printf '\0\0\0\0\0\0\0\0' >> %t-bar.profraw
 
 RUN: printf '\067\265\035\031\112\165\023\344' >> %t-bar.profraw
 RUN: printf '\02\0\0\0\0\0\0\0' >> %t-bar.profraw