diff --git a/llvm/lib/ExecutionEngine/Orc/PerfSupportPlugin.cpp b/llvm/lib/ExecutionEngine/Orc/PerfSupportPlugin.cpp
--- a/llvm/lib/ExecutionEngine/Orc/PerfSupportPlugin.cpp
+++ b/llvm/lib/ExecutionEngine/Orc/PerfSupportPlugin.cpp
@@ -52,9 +52,9 @@
   // binary search table goes here
 
   size_t HeaderSize = (sizeof(Version) + sizeof(EhFramePtrEnc) +
-                               sizeof(FDECountEnc) + sizeof(TableEnc) + absolute
+                               sizeof(FDECountEnc) + sizeof(TableEnc) + (absolute
                            ? sizeof(uint64_t)
-                           : sizeof(EHFrameRelocation));
+                           : sizeof(EHFrameRelocation)));
   std::string HeaderContent(HeaderSize, '\0');
   BinaryStreamWriter Writer(
       MutableArrayRef<uint8_t>(
@@ -69,8 +69,7 @@
   if (auto Err = Writer.writeInteger(TableEnc))
     return std::move(Err);
   if (absolute) {
-    uint64_t EHFrameAddr = support::endian::byte_swap(
-        SectionRange(EHFrame).getStart().getValue(), endianness);
+    uint64_t EHFrameAddr = SectionRange(EHFrame).getStart().getValue();
     if (auto Err = Writer.writeInteger(EHFrameAddr))
       return std::move(Err);
   } else {