[llvm] [memprof] Add Version2 of the indexed MemProf format (PR #89100)

[Kazu Hirata via llvm-commits]

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@@ -450,6 +474,67 @@ TEST_F(InstrProfTest, test_memprof) {
   EXPECT_THAT(WantRecord, EqualsRecord(Record));
 }
 
+TEST_F(InstrProfTest, test_memprof_v2) {
+  Writer.setMemProfVersionRequested(memprof::Version2);
+
+  ASSERT_THAT_ERROR(Writer.mergeProfileKind(InstrProfKind::MemProf),
+                    Succeeded());
+
+  const IndexedMemProfRecord IndexedMR = makeRecordV2(
+      /*AllocFrames=*/{0x111, 0x222},
+      /*CallSiteFrames=*/{0x333});
+  const FrameIdMapTy IdToFrameMap = getFrameMapping();
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kazutakahirata wrote:

`makeRecordV2` and `getFrameMapping` return by values, so I don't think I should use references here.

https://github.com/llvm/llvm-project/pull/89100