diff --git a/llvm/lib/Target/LoongArch/LoongArchInstrInfo.td b/llvm/lib/Target/LoongArch/LoongArchInstrInfo.td
--- a/llvm/lib/Target/LoongArch/LoongArchInstrInfo.td
+++ b/llvm/lib/Target/LoongArch/LoongArchInstrInfo.td
@@ -1194,7 +1194,7 @@
 def : AtomicPat<int_loongarch_masked_atomicrmw_sub_i64,
                 PseudoMaskedAtomicLoadSub32>;
 def : Pat<(atomic_load_nand_64 GPR:$rj, GPR:$rk),
-          (PseudoAtomicLoadNand64 GPR:$rk, GPR:$rj)>;
+          (PseudoAtomicLoadNand64 GPR:$rj, GPR:$rk)>;
 def : AtomicPat<int_loongarch_masked_atomicrmw_nand_i64,
                 PseudoMaskedAtomicLoadNand32>;
 def : Pat<(atomic_load_add_32 GPR:$rj, GPR:$rk),
@@ -1228,7 +1228,7 @@
 } // Predicates = [IsLA64]
 
 def : Pat<(atomic_load_nand_32 GPR:$rj, GPR:$rk),
-          (PseudoAtomicLoadNand32 GPR:$rk, GPR:$rj)>;
+          (PseudoAtomicLoadNand32 GPR:$rj, GPR:$rk)>;
 
 let Predicates = [IsLA32] in {
 def : AtomicPat<int_loongarch_masked_atomicrmw_xchg_i32,
diff --git a/llvm/test/CodeGen/LoongArch/ir-instruction/atomicrmw.ll b/llvm/test/CodeGen/LoongArch/ir-instruction/atomicrmw.ll
--- a/llvm/test/CodeGen/LoongArch/ir-instruction/atomicrmw.ll
+++ b/llvm/test/CodeGen/LoongArch/ir-instruction/atomicrmw.ll
@@ -547,10 +547,10 @@
 ; LA32:       # %bb.0:
 ; LA32-NEXT:  .LBB14_1: # =>This Inner Loop Header: Depth=1
 ; LA32-NEXT:    dbar 0
-; LA32-NEXT:    ll.w $a2, $a1, 0
-; LA32-NEXT:    and $a3, $a2, $a0
+; LA32-NEXT:    ll.w $a2, $a0, 0
+; LA32-NEXT:    and $a3, $a2, $a1
 ; LA32-NEXT:    nor $a3, $a3, $zero
-; LA32-NEXT:    sc.w $a3, $a1, 0
+; LA32-NEXT:    sc.w $a3, $a0, 0
 ; LA32-NEXT:    beqz $a3, .LBB14_1
 ; LA32-NEXT:  # %bb.2:
 ; LA32-NEXT:    move $a0, $a2
@@ -560,10 +560,10 @@
 ; LA64:       # %bb.0:
 ; LA64-NEXT:  .LBB14_1: # =>This Inner Loop Header: Depth=1
 ; LA64-NEXT:    dbar 0
-; LA64-NEXT:    ll.w $a2, $a1, 0
-; LA64-NEXT:    and $a3, $a2, $a0
+; LA64-NEXT:    ll.w $a2, $a0, 0
+; LA64-NEXT:    and $a3, $a2, $a1
 ; LA64-NEXT:    nor $a3, $a3, $zero
-; LA64-NEXT:    sc.w $a3, $a1, 0
+; LA64-NEXT:    sc.w $a3, $a0, 0
 ; LA64-NEXT:    beqz $a3, .LBB14_1
 ; LA64-NEXT:  # %bb.2:
 ; LA64-NEXT:    move $a0, $a2
@@ -587,10 +587,10 @@
 ; LA64:       # %bb.0:
 ; LA64-NEXT:  .LBB15_1: # =>This Inner Loop Header: Depth=1
 ; LA64-NEXT:    dbar 0
-; LA64-NEXT:    ll.d $a2, $a1, 0
-; LA64-NEXT:    and $a3, $a2, $a0
+; LA64-NEXT:    ll.d $a2, $a0, 0
+; LA64-NEXT:    and $a3, $a2, $a1
 ; LA64-NEXT:    nor $a3, $a3, $zero
-; LA64-NEXT:    sc.d $a3, $a1, 0
+; LA64-NEXT:    sc.d $a3, $a0, 0
 ; LA64-NEXT:    beqz $a3, .LBB15_1
 ; LA64-NEXT:  # %bb.2:
 ; LA64-NEXT:    move $a0, $a2