Unsafe.compareAndSwapInt()/Object() intrinsics for x86.

Bug: 11391018
Change-Id: I0a97375103917b0e9e20f199304c17a7f849c361
diff --git a/compiler/dex/quick/x86/x86_lir.h b/compiler/dex/quick/x86/x86_lir.h
index 3518131..bbcae92 100644
--- a/compiler/dex/quick/x86/x86_lir.h
+++ b/compiler/dex/quick/x86/x86_lir.h
@@ -354,7 +354,7 @@
   Binary0fOpCode(kX86Imul16),   // 16bit multiply
   Binary0fOpCode(kX86Imul32),   // 32bit multiply
   kX86CmpxchgRR, kX86CmpxchgMR, kX86CmpxchgAR,  // compare and exchange
-  kX86LockCmpxchgRR, kX86LockCmpxchgMR, kX86LockCmpxchgAR,  // locked compare and exchange
+  kX86LockCmpxchgMR, kX86LockCmpxchgAR,  // locked compare and exchange
   Binary0fOpCode(kX86Movzx8),   // zero-extend 8-bit value
   Binary0fOpCode(kX86Movzx16),  // zero-extend 16-bit value
   Binary0fOpCode(kX86Movsx8),   // sign-extend 8-bit value