1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt < %s -instcombine -S | FileCheck %s
3
4; Canonicalize vector ge/le comparisons with constants to gt/lt.
5
6; Normal types are ConstantDataVectors. Test the constant values adjacent to the
7; min/max values that we're not allowed to transform.
8
9define <2 x i1> @sge(<2 x i8> %x) {
10; CHECK-LABEL: @sge(
11; CHECK-NEXT:    [[CMP:%.*]] = icmp sgt <2 x i8> %x, <i8 -128, i8 126>
12; CHECK-NEXT:    ret <2 x i1> [[CMP]]
13;
14  %cmp = icmp sge <2 x i8> %x, <i8 -127, i8 -129>
15  ret <2 x i1> %cmp
16}
17
18define <2 x i1> @uge(<2 x i8> %x) {
19; CHECK-LABEL: @uge(
20; CHECK-NEXT:    [[CMP:%.*]] = icmp ugt <2 x i8> %x, <i8 -2, i8 0>
21; CHECK-NEXT:    ret <2 x i1> [[CMP]]
22;
23  %cmp = icmp uge <2 x i8> %x, <i8 -1, i8 1>
24  ret <2 x i1> %cmp
25}
26
27define <2 x i1> @sle(<2 x i8> %x) {
28; CHECK-LABEL: @sle(
29; CHECK-NEXT:    [[CMP:%.*]] = icmp slt <2 x i8> %x, <i8 127, i8 -127>
30; CHECK-NEXT:    ret <2 x i1> [[CMP]]
31;
32  %cmp = icmp sle <2 x i8> %x, <i8 126, i8 128>
33  ret <2 x i1> %cmp
34}
35
36define <2 x i1> @ule(<2 x i8> %x) {
37; CHECK-LABEL: @ule(
38; CHECK-NEXT:    [[CMP:%.*]] = icmp ult <2 x i8> %x, <i8 -1, i8 1>
39; CHECK-NEXT:    ret <2 x i1> [[CMP]]
40;
41  %cmp = icmp ule <2 x i8> %x, <i8 254, i8 0>
42  ret <2 x i1> %cmp
43}
44
45define <2 x i1> @ult_min_signed_value(<2 x i8> %x) {
46; CHECK-LABEL: @ult_min_signed_value(
47; CHECK-NEXT:    [[CMP:%.*]] = icmp sgt <2 x i8> %x, <i8 -1, i8 -1>
48; CHECK-NEXT:    ret <2 x i1> [[CMP]]
49;
50  %cmp = icmp ult <2 x i8> %x, <i8 128, i8 128>
51  ret <2 x i1> %cmp
52}
53
54; Zeros are special: they're ConstantAggregateZero.
55
56define <2 x i1> @sge_zero(<2 x i8> %x) {
57; CHECK-LABEL: @sge_zero(
58; CHECK-NEXT:    [[CMP:%.*]] = icmp sgt <2 x i8> %x, <i8 -1, i8 -1>
59; CHECK-NEXT:    ret <2 x i1> [[CMP]]
60;
61  %cmp = icmp sge <2 x i8> %x, <i8 0, i8 0>
62  ret <2 x i1> %cmp
63}
64
65define <2 x i1> @uge_zero(<2 x i8> %x) {
66; CHECK-LABEL: @uge_zero(
67; CHECK-NEXT:    ret <2 x i1> <i1 true, i1 true>
68;
69  %cmp = icmp uge <2 x i8> %x, <i8 0, i8 0>
70  ret <2 x i1> %cmp
71}
72
73define <2 x i1> @sle_zero(<2 x i8> %x) {
74; CHECK-LABEL: @sle_zero(
75; CHECK-NEXT:    [[CMP:%.*]] = icmp slt <2 x i8> %x, <i8 1, i8 1>
76; CHECK-NEXT:    ret <2 x i1> [[CMP]]
77;
78  %cmp = icmp sle <2 x i8> %x, <i8 0, i8 0>
79  ret <2 x i1> %cmp
80}
81
82define <2 x i1> @ule_zero(<2 x i8> %x) {
83; CHECK-LABEL: @ule_zero(
84; CHECK-NEXT:    [[CMP:%.*]] = icmp eq <2 x i8> %x, zeroinitializer
85; CHECK-NEXT:    ret <2 x i1> [[CMP]]
86;
87  %cmp = icmp ule <2 x i8> %x, <i8 0, i8 0>
88  ret <2 x i1> %cmp
89}
90
91; Weird types are ConstantVectors, not ConstantDataVectors. For an i3 type:
92; Signed min = -4
93; Unsigned min = 0
94; Signed max = 3
95; Unsigned max = 7
96
97define <3 x i1> @sge_weird(<3 x i3> %x) {
98; CHECK-LABEL: @sge_weird(
99; CHECK-NEXT:    [[CMP:%.*]] = icmp sgt <3 x i3> %x, <i3 -4, i3 2, i3 -1>
100; CHECK-NEXT:    ret <3 x i1> [[CMP]]
101;
102  %cmp = icmp sge <3 x i3> %x, <i3 -3, i3 -5, i3 0>
103  ret <3 x i1> %cmp
104}
105
106define <3 x i1> @uge_weird(<3 x i3> %x) {
107; CHECK-LABEL: @uge_weird(
108; CHECK-NEXT:    [[CMP:%.*]] = icmp ugt <3 x i3> %x, <i3 -2, i3 0, i3 1>
109; CHECK-NEXT:    ret <3 x i1> [[CMP]]
110;
111  %cmp = icmp uge <3 x i3> %x, <i3 -1, i3 1, i3 2>
112  ret <3 x i1> %cmp
113}
114
115define <3 x i1> @sle_weird(<3 x i3> %x) {
116; CHECK-LABEL: @sle_weird(
117; CHECK-NEXT:    [[CMP:%.*]] = icmp slt <3 x i3> %x, <i3 3, i3 -3, i3 1>
118; CHECK-NEXT:    ret <3 x i1> [[CMP]]
119;
120  %cmp = icmp sle <3 x i3> %x, <i3 2, i3 4, i3 0>
121  ret <3 x i1> %cmp
122}
123
124define <3 x i1> @ule_weird(<3 x i3> %x) {
125; CHECK-LABEL: @ule_weird(
126; CHECK-NEXT:    [[CMP:%.*]] = icmp ult <3 x i3> %x, <i3 -1, i3 1, i3 2>
127; CHECK-NEXT:    ret <3 x i1> [[CMP]]
128;
129  %cmp = icmp ule <3 x i3> %x, <i3 6, i3 0, i3 1>
130  ret <3 x i1> %cmp
131}
132
133; We can't do the transform if any constants are already at the limits.
134
135define <2 x i1> @sge_min(<2 x i3> %x) {
136; CHECK-LABEL: @sge_min(
137; CHECK-NEXT:    [[CMP:%.*]] = icmp sge <2 x i3> %x, <i3 -4, i3 1>
138; CHECK-NEXT:    ret <2 x i1> [[CMP]]
139;
140  %cmp = icmp sge <2 x i3> %x, <i3 -4, i3 1>
141  ret <2 x i1> %cmp
142}
143
144define <2 x i1> @uge_min(<2 x i3> %x) {
145; CHECK-LABEL: @uge_min(
146; CHECK-NEXT:    [[CMP:%.*]] = icmp uge <2 x i3> %x, <i3 1, i3 0>
147; CHECK-NEXT:    ret <2 x i1> [[CMP]]
148;
149  %cmp = icmp uge <2 x i3> %x, <i3 1, i3 0>
150  ret <2 x i1> %cmp
151}
152
153define <2 x i1> @sle_max(<2 x i3> %x) {
154; CHECK-LABEL: @sle_max(
155; CHECK-NEXT:    [[CMP:%.*]] = icmp sle <2 x i3> %x, <i3 1, i3 3>
156; CHECK-NEXT:    ret <2 x i1> [[CMP]]
157;
158  %cmp = icmp sle <2 x i3> %x, <i3 1, i3 3>
159  ret <2 x i1> %cmp
160}
161
162define <2 x i1> @ule_max(<2 x i3> %x) {
163; CHECK-LABEL: @ule_max(
164; CHECK-NEXT:    [[CMP:%.*]] = icmp ule <2 x i3> %x, <i3 -1, i3 1>
165; CHECK-NEXT:    ret <2 x i1> [[CMP]]
166;
167  %cmp = icmp ule <2 x i3> %x, <i3 7, i3 1>
168  ret <2 x i1> %cmp
169}
170
171define <2 x i1> @PR27756_1(<2 x i8> %a) {
172; CHECK-LABEL: @PR27756_1(
173; CHECK-NEXT:    [[CMP:%.*]] = icmp slt <2 x i8> %a, <i8 34, i8 1>
174; CHECK-NEXT:    ret <2 x i1> [[CMP]]
175;
176  %cmp = icmp sle <2 x i8> %a, <i8 bitcast (<2 x i4> <i4 1, i4 2> to i8), i8 0>
177  ret <2 x i1> %cmp
178}
179
180; Undef elements don't prevent the transform of the comparison.
181
182define <2 x i1> @PR27756_2(<2 x i8> %a) {
183; CHECK-LABEL: @PR27756_2(
184; CHECK-NEXT:    [[CMP:%.*]] = icmp slt <2 x i8> %a, <i8 undef, i8 1>
185; CHECK-NEXT:    ret <2 x i1> [[CMP]]
186;
187  %cmp = icmp sle <2 x i8> %a, <i8 undef, i8 0>
188  ret <2 x i1> %cmp
189}
190
191@someglobal = global i32 0
192
193define <2 x i1> @PR27786(<2 x i8> %a) {
194; CHECK-LABEL: @PR27786(
195; CHECK-NEXT:    [[CMP:%.*]] = icmp sle <2 x i8> %a, bitcast (i16 ptrtoint (i32* @someglobal to i16) to <2 x i8>)
196; CHECK-NEXT:    ret <2 x i1> [[CMP]]
197;
198  %cmp = icmp sle <2 x i8> %a, bitcast (i16 ptrtoint (i32* @someglobal to i16) to <2 x i8>)
199  ret <2 x i1> %cmp
200}
201