================
@@ -124,6 +124,28 @@ static bool findRefEdges(ModuleSummaryIndex &Index, const
User *CurUser,
Worklist.push_back(Operand);
}
}
+
+ const Instruction *I = dyn_cast<Instruction>(CurUser);
+ if (I) {
+ uint32_t ActualNumValueData = 0;
+ uint64_t TotalCount = 0;
+ // 24 is the maximum number of values preserved for one instrumented site,
+ // defined by INSTR_PROF_DEFAULT_NUM_VAL_PER_SITE in
+ // compiler-rt/lib/profile/InstrProfilingValue.c; passing 24 as
+ // `MaxNumValueData` controls the max number of elements in the returned
+ // array. The actual number of values is gated by the number of ops in
!prof
+ // metadata.
+ auto ValueDataArray = getValueProfDataFromInst(
+ *I, IPVK_VTableTarget, 24 /* MaxNumValueData */, ActualNumValueData,
----------------
teresajohnson wrote:
Do we really want 24? Or should we limit to something smaller (and tunable),
like we do for virtual function pointer profiles in ICP.
https://github.com/llvm/llvm-project/pull/79381
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