[Mips]Add test file for 'xor' and 'and' instructions

For llvm#99783

Author: anbbna

llvm/test/CodeGen/Mips/xor-and.ll

@@ -0,0 +1,17 @@
+; RUN: llc -O3 -mcpu=mips64r6 -mtriple=mips64el-unknown-linux-gnuabi64 < %s -o - | FileCheck %s
+
+; This test shows the unoptimized result with unnecessary SLLs.
+define noundef signext i32 @xor_and(i32 noundef signext %a, i32 noundef signext %b) local_unnamed_addr {
+; CHECK-LABEL: xor_and:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    and $1, $5, $4
+; CHECK-NEXT:    sll $1, $1, 0
+; CHECK-NEXT:    not $1, $1
+; CHECK-NEXT:    jr $ra
+; CHECK-NEXT:    sll $2, $1, 0
+
+entry:
+  %0 = and i32 %b, %a
+  %or1 = xor i32 %0, -1
+  ret i32 %or1
+}