[llvm] [llvm-profgen] Loading binary functions from .symtab when DWARF info is incomplete (PR #163654)

[Lei Wang via llvm-commits]

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@@ -449,29 +449,61 @@ bool ProfileGeneratorBase::collectFunctionsFromRawProfile(
   // Go through all the stacks, ranges and branches in sample counters, use
   // the start of the range to look up the function it belongs and record the
   // function.
+  uint64_t ErrStkAddr = 0, ErrFuncRange = 0, ErrSrc = 0, ErrTgt = 0;
+  uint64_t TotalStkAddr = 0, TotalFuncRange = 0, TotalSrc = 0, TotalTgt = 0;
   for (const auto &CI : *SampleCounters) {
     if (const auto *CtxKey = dyn_cast<AddrBasedCtxKey>(CI.first.getPtr())) {
       for (auto StackAddr : CtxKey->Context) {
+        uint64_t inc = Binary->addressIsCode(StackAddr) ? 1 : 0;
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wlei-llvm wrote:

How about doing the stats using the weighted number, i,e.  the sample count in `SampleCounters `
We do this for the other stats(https://github.com/llvm/llvm-project/blob/main/llvm/tools/llvm-profgen/PerfReader.cpp#L1293), it may be more insightful for performance investigations. 




https://github.com/llvm/llvm-project/pull/163654