diff --git a/llvm/test/CodeGen/LoongArch/ir-instruction/and.ll b/llvm/test/CodeGen/LoongArch/ir-instruction/and.ll
--- a/llvm/test/CodeGen/LoongArch/ir-instruction/and.ll
+++ b/llvm/test/CodeGen/LoongArch/ir-instruction/and.ll
@@ -265,3 +265,114 @@
   %r = and i64 4096, %b
   ret i64 %r
 }
+
+define signext i32 @and_i32_0xfff0(i32 %a) {
+; LA32-LABEL: and_i32_0xfff0:
+; LA32:       # %bb.0:
+; LA32-NEXT:    lu12i.w $a1, 15
+; LA32-NEXT:    ori $a1, $a1, 4080
+; LA32-NEXT:    and $a0, $a0, $a1
+; LA32-NEXT:    ret
+;
+; LA64-LABEL: and_i32_0xfff0:
+; LA64:       # %bb.0:
+; LA64-NEXT:    lu12i.w $a1, 15
+; LA64-NEXT:    ori $a1, $a1, 4080
+; LA64-NEXT:    and $a0, $a0, $a1
+; LA64-NEXT:    ret
+  %b = and i32 %a, 65520
+  ret i32 %b
+}
+
+define signext i32 @and_i32_0xff000(i32 %a) {
+; LA32-LABEL: and_i32_0xff000:
+; LA32:       # %bb.0:
+; LA32-NEXT:    lu12i.w $a1, 255
+; LA32-NEXT:    and $a0, $a0, $a1
+; LA32-NEXT:    ret
+;
+; LA64-LABEL: and_i32_0xff000:
+; LA64:       # %bb.0:
+; LA64-NEXT:    lu12i.w $a1, 255
+; LA64-NEXT:    and $a0, $a0, $a1
+; LA64-NEXT:    ret
+  %b = and i32 %a, 1044480
+  ret i32 %b
+}
+
+define i64 @and_i64_0xfff0(i64 %a) {
+; LA32-LABEL: and_i64_0xfff0:
+; LA32:       # %bb.0:
+; LA32-NEXT:    lu12i.w $a1, 15
+; LA32-NEXT:    ori $a1, $a1, 4080
+; LA32-NEXT:    and $a0, $a0, $a1
+; LA32-NEXT:    move $a1, $zero
+; LA32-NEXT:    ret
+;
+; LA64-LABEL: and_i64_0xfff0:
+; LA64:       # %bb.0:
+; LA64-NEXT:    lu12i.w $a1, 15
+; LA64-NEXT:    ori $a1, $a1, 4080
+; LA64-NEXT:    and $a0, $a0, $a1
+; LA64-NEXT:    ret
+  %b = and i64 %a, 65520
+  ret i64 %b
+}
+
+define i64 @and_i64_0xff000(i64 %a) {
+; LA32-LABEL: and_i64_0xff000:
+; LA32:       # %bb.0:
+; LA32-NEXT:    lu12i.w $a1, 255
+; LA32-NEXT:    and $a0, $a0, $a1
+; LA32-NEXT:    move $a1, $zero
+; LA32-NEXT:    ret
+;
+; LA64-LABEL: and_i64_0xff000:
+; LA64:       # %bb.0:
+; LA64-NEXT:    lu12i.w $a1, 255
+; LA64-NEXT:    and $a0, $a0, $a1
+; LA64-NEXT:    ret
+  %b = and i64 %a, 1044480
+  ret i64 %b
+}
+
+define i64 @and_i64_0xfff0_twice(i64 %a, i64 %b) {
+; LA32-LABEL: and_i64_0xfff0_twice:
+; LA32:       # %bb.0:
+; LA32-NEXT:    lu12i.w $a1, 15
+; LA32-NEXT:    ori $a1, $a1, 4080
+; LA32-NEXT:    and $a2, $a2, $a1
+; LA32-NEXT:    and $a0, $a0, $a1
+; LA32-NEXT:    mul.w $a0, $a0, $a2
+; LA32-NEXT:    move $a1, $zero
+; LA32-NEXT:    ret
+;
+; LA64-LABEL: and_i64_0xfff0_twice:
+; LA64:       # %bb.0:
+; LA64-NEXT:    lu12i.w $a2, 15
+; LA64-NEXT:    ori $a2, $a2, 4080
+; LA64-NEXT:    and $a1, $a1, $a2
+; LA64-NEXT:    and $a0, $a0, $a2
+; LA64-NEXT:    mul.d $a0, $a0, $a1
+; LA64-NEXT:    ret
+  %c = and i64 %a, 65520
+  %d = and i64 %b, 65520
+  %e = mul i64 %c, %d
+  ret i64 %e
+}
+
+define i64 @and_i64_minus_31(i64 %a) {
+; LA32-LABEL: and_i64_minus_31:
+; LA32:       # %bb.0:
+; LA32-NEXT:    addi.w $a2, $zero, -31
+; LA32-NEXT:    and $a0, $a0, $a2
+; LA32-NEXT:    ret
+;
+; LA64-LABEL: and_i64_minus_31:
+; LA64:       # %bb.0:
+; LA64-NEXT:    addi.w $a1, $zero, -31
+; LA64-NEXT:    and $a0, $a0, $a1
+; LA64-NEXT:    ret
+  %b = and i64 %a, -31
+  ret i64 %b
+}