[InstCombine] Add additional multi-use test for and/or replacement (NFC)

Author: nikic

llvm/test/Transforms/InstCombine/or.ll

@@ -1901,3 +1901,20 @@ define i32 @test_or_add_xor(i32 %a, i32 %b, i32 %c) {
   %or = or i32 %add, %a
   ret i32 %or
 }
+
+define i32 @test_or_and_and_multiuse(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @test_or_and_and_multiuse(
+; CHECK-NEXT:    [[AND1:%.*]] = and i32 [[A:%.*]], [[B:%.*]]
+; CHECK-NEXT:    [[AND2:%.*]] = and i32 [[AND1]], [[C:%.*]]
+; CHECK-NEXT:    call void @use(i32 [[AND1]])
+; CHECK-NEXT:    call void @use(i32 [[AND2]])
+; CHECK-NEXT:    [[OR:%.*]] = or i32 [[AND2]], [[A]]
+; CHECK-NEXT:    ret i32 [[OR]]
+;
+  %and1 = and i32 %a, %b
+  %and2 = and i32 %and1, %c
+  call void @use(i32 %and1)
+  call void @use(i32 %and2)
+  %or = or i32 %and2, %a
+  ret i32 %or
+}