fix comment for missing dbar acquire

tangaac · tangaac · commit d07502b8bcde · 2025-01-22T18:16:19.000+08:00
diff --git a/llvm/lib/Target/LoongArch/LoongArchExpandAtomicPseudoInsts.cpp b/llvm/lib/Target/LoongArch/LoongArchExpandAtomicPseudoInsts.cpp
@@ -648,6 +648,7 @@ bool LoongArchExpandAtomicPseudo::expandAtomicCmpXchg128(
 
   // .loophead:
   //   ll.d res_lo, (addr)
+  //   dbar acquire
   //   ld.d res_hi, (addr), 8
   //   bne dest_lo, cmpval_lo, tail
   //   bne dest_hi, cmpval_hi, tail
