[llvm] [BOLT] Fix NOP instruction emission on x86 (PR #72186)

[Vladislav Khmelevsky via llvm-commits]

================
@@ -4366,6 +4367,10 @@ MCInst *BinaryFunction::getInstructionAtOffset(uint64_t Offset) {
   }
 }
 
+bool BinaryFunction::shouldPreserveNops() const {
+  return PreserveNops || opts::KeepNops;
----------------
yota9 wrote:

Not to loop though the functions in pass. It is minor thing

https://github.com/llvm/llvm-project/pull/72186