[InstCombine] Add a test for logical or

Author: dtcxzyw

llvm/test/Transforms/InstCombine/icmp.ll

@@ -5376,3 +5376,14 @@ define i1 @icmp_samesign_logical_and(i32 %In) {
   %V = select i1 %c1, i1 %c2, i1 false
   ret i1 %V
 }
+
+define i1 @icmp_samesign_logical_or(i32 %In) {
+; CHECK-LABEL: @icmp_samesign_logical_or(
+; CHECK-NEXT:    [[V:%.*]] = icmp ne i32 [[IN:%.*]], 1
+; CHECK-NEXT:    ret i1 [[V]]
+;
+  %c1 = icmp samesign slt i32 %In, 0
+  %c2 = icmp samesign ne i32 %In, 1
+  %V = select i1 %c1, i1 true, i1 %c2
+  ret i1 %V
+}