[perf2bolt] Improve heuristic to map in-process addresses to specific… (#109397)

… segments in Elf binary.

The heuristic is improved by also taking into account that only
executable segments should contain instructions.

Fixes #109384.

bolt/lib/Core/BinaryContext.cpp

@@ -2021,6 +2021,9 @@ BinaryContext::getBaseAddressForMapping(uint64_t MMapAddress,
   // Find a segment with a matching file offset.
   for (auto &KV : SegmentMapInfo) {
     const SegmentInfo &SegInfo = KV.second;
+    // Only consider executable segments.
+    if (!SegInfo.IsExecutable)
+      continue;
     // FileOffset is got from perf event,
     // and it is equal to alignDown(SegInfo.FileOffset, pagesize).
     // If the pagesize is not equal to SegInfo.Alignment.