Add support for 64-bit logical NOR.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141029 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/Mips/mips64instrs.ll b/test/CodeGen/Mips/mips64instrs.ll
index 16bca0f..8c02a2d 100644
--- a/test/CodeGen/Mips/mips64instrs.ll
+++ b/test/CodeGen/Mips/mips64instrs.ll
@@ -133,3 +133,11 @@
   ret i64 %tmp1
 }
 
+define i64 @f20(i64 %a, i64 %b) nounwind readnone {
+entry:
+; CHECK: nor
+  %or = or i64 %b, %a
+  %neg = xor i64 %or, -1
+  ret i64 %neg
+}
+