1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt < %s -instsimplify -S | FileCheck %s
3
4define <2 x i1> @nonzero_vec_splat(<2 x i32> %x) {
5; CHECK-LABEL: @nonzero_vec_splat(
6; CHECK-NEXT:    ret <2 x i1> zeroinitializer
7;
8  %y = or <2 x i32> %x, <i32 1, i32 1>
9  %c = icmp eq <2 x i32> %y, zeroinitializer
10  ret <2 x i1> %c
11}
12
13define <2 x i1> @nonzero_vec_nonsplat(<2 x i32> %x) {
14; CHECK-LABEL: @nonzero_vec_nonsplat(
15; CHECK-NEXT:    ret <2 x i1> <i1 true, i1 true>
16;
17  %y = or <2 x i32> %x, <i32 2, i32 1>
18  %c = icmp ne <2 x i32> %y, zeroinitializer
19  ret <2 x i1> %c
20}
21
22define <2 x i1> @nonzero_vec_undef_elt(<2 x i32> %x) {
23; CHECK-LABEL: @nonzero_vec_undef_elt(
24; CHECK-NEXT:    ret <2 x i1> zeroinitializer
25;
26  %y = or <2 x i32> %x, <i32 undef, i32 1>
27  %c = icmp eq <2 x i32> %y, zeroinitializer
28  ret <2 x i1> %c
29}
30
31define <2 x i1> @may_be_zero_vec(<2 x i32> %x) {
32; CHECK-LABEL: @may_be_zero_vec(
33; CHECK-NEXT:    [[Y:%.*]] = or <2 x i32> %x, <i32 0, i32 1>
34; CHECK-NEXT:    [[C:%.*]] = icmp ne <2 x i32> [[Y]], zeroinitializer
35; CHECK-NEXT:    ret <2 x i1> [[C]]
36;
37  %y = or <2 x i32> %x, <i32 0, i32 1>
38  %c = icmp ne <2 x i32> %y, zeroinitializer
39  ret <2 x i1> %c
40}
41
42; Multiplies of non-zero numbers are non-zero if there is no unsigned overflow.
43define <2 x i1> @nonzero_vec_mul_nuw(<2 x i32> %x, <2 x i32> %y) {
44; CHECK-LABEL: @nonzero_vec_mul_nuw(
45; CHECK-NEXT:    ret <2 x i1> zeroinitializer
46;
47  %xnz = or <2 x i32> %x, <i32 1, i32 2>
48  %ynz = or <2 x i32> %y, <i32 3, i32 undef>
49  %m = mul nuw <2 x i32> %xnz, %ynz
50  %c = icmp eq <2 x i32> %m, zeroinitializer
51  ret <2 x i1> %c
52}
53
54; Multiplies of non-zero numbers are non-zero if there is no signed overflow.
55define <2 x i1> @nonzero_vec_mul_nsw(<2 x i32> %x, <2 x i32> %y) {
56; CHECK-LABEL: @nonzero_vec_mul_nsw(
57; CHECK-NEXT:    ret <2 x i1> <i1 true, i1 true>
58;
59  %xnz = or <2 x i32> %x, <i32 undef, i32 2>
60  %ynz = or <2 x i32> %y, <i32 3, i32 4>
61  %m = mul nsw <2 x i32> %xnz, %ynz
62  %c = icmp ne <2 x i32> %m, zeroinitializer
63  ret <2 x i1> %c
64}
65
66