[memprof] Remove MemProf format Version 0 (#116442)

This patch removes MemProf format Version 0 now that version 2 and 3
seem to be working well.

I'm not touching version 1 for now because some tests still rely on
version 1.

Note that Version 0 is identical to Version 1 except that the MemProf
section of the indexed format has a MemProf version field.

1 files changed, 3 insertions, 5 deletions

diff --git a/llvm/unittests/ProfileData/MemProfTest.cpp b/llvm/unittests/ProfileData/MemProfTest.cpp
index b7a9170..c906698 100644
--- a/llvm/unittests/ProfileData/MemProfTest.cpp
+++ b/llvm/unittests/ProfileData/MemProfTest.cpp
@@ -268,9 +268,7 @@ TEST(MemProf, PortableWrapper) {
   EXPECT_EQ(3UL, ReadBlock.getAllocCpuId());
 }
 
-// Version0 and Version1 serialize IndexedMemProfRecord in the same format, so
-// we share one test.
-TEST(MemProf, RecordSerializationRoundTripVersion0And1) {
+TEST(MemProf, RecordSerializationRoundTripVersion1) {
   const auto Schema = llvm::memprof::getFullSchema();
 
   MemInfoBlock Info(/*size=*/16, /*access_count=*/7, /*alloc_timestamp=*/1000,
@@ -294,11 +292,11 @@ TEST(MemProf, RecordSerializationRoundTripVersion0And1) {
 
   std::string Buffer;
   llvm::raw_string_ostream OS(Buffer);
-  Record.serialize(Schema, OS, llvm::memprof::Version0);
+  Record.serialize(Schema, OS, llvm::memprof::Version1);
 
   const IndexedMemProfRecord GotRecord = IndexedMemProfRecord::deserialize(
       Schema, reinterpret_cast<const unsigned char *>(Buffer.data()),
-      llvm::memprof::Version0);
+      llvm::memprof::Version1);
 
   EXPECT_EQ(Record, GotRecord);
 }