xref: /llvm-project/llvm/test/Transforms/SCCP/binaryops-range-special-cases.ll (revision 85b289377bff14790f402e5ea84bb24168a68fc6) 
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt < %s -passes=ipsccp -S | FileCheck %s
3
4declare void @use(i1)
5define void @sdiv1_cmp_constants(i32 %x) {
6; CHECK-LABEL: @sdiv1_cmp_constants(
7; CHECK-NEXT:    [[D:%.*]] = sdiv i32 1, [[X:%.*]]
8; CHECK-NEXT:    [[C_0:%.*]] = icmp slt i32 0, [[D]]
9; CHECK-NEXT:    call void @use(i1 [[C_0]])
10; CHECK-NEXT:    call void @use(i1 false)
11; CHECK-NEXT:    call void @use(i1 false)
12; CHECK-NEXT:    [[C_3:%.*]] = icmp eq i32 1, [[D]]
13; CHECK-NEXT:    call void @use(i1 [[C_3]])
14; CHECK-NEXT:    [[C_4:%.*]] = icmp eq i32 0, [[D]]
15; CHECK-NEXT:    call void @use(i1 [[C_4]])
16; CHECK-NEXT:    call void @use(i1 false)
17; CHECK-NEXT:    ret void
18;
19  %d = sdiv i32 1, %x
20  %c.0 = icmp slt i32 0, %d
21  call void @use(i1 %c.0)
22  %c.1 = icmp slt i32 1, %d
23  call void @use(i1 %c.1)
24  %c.2 = icmp slt i32 2, %d
25  call void @use(i1 %c.2)
26
27  %c.3 = icmp eq i32 1, %d
28  call void @use(i1 %c.3)
29  %c.4 = icmp eq i32 0, %d
30  call void @use(i1 %c.4)
31  %c.5 = icmp eq i32 2, %d
32  call void @use(i1 %c.5)
33
34  ret void
35}
36
37define void @sdiv1_cmp_range_1(i32 %x, i1 %c) {
38; CHECK-LABEL: @sdiv1_cmp_range_1(
39; CHECK-NEXT:    br i1 [[C:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
40; CHECK:       bb1:
41; CHECK-NEXT:    br label [[BB3:%.*]]
42; CHECK:       bb2:
43; CHECK-NEXT:    br label [[BB3]]
44; CHECK:       bb3:
45; CHECK-NEXT:    [[P:%.*]] = phi i32 [ 1, [[BB1]] ], [ 2, [[BB2]] ]
46; CHECK-NEXT:    [[D:%.*]] = sdiv i32 1, [[X:%.*]]
47; CHECK-NEXT:    call void @use(i1 false)
48; CHECK-NEXT:    [[C_1:%.*]] = icmp eq i32 [[P]], [[D]]
49; CHECK-NEXT:    call void @use(i1 [[C_1]])
50; CHECK-NEXT:    ret void
51;
52  br i1 %c, label %bb1, label %bb2
53bb1:
54  br label %bb3
55bb2:
56  br label %bb3
57
58bb3:
59  %p = phi i32 [1, %bb1], [2, %bb2]
60  %d = sdiv i32 1, %x
61  %c.0 = icmp slt i32 %p, %d
62  call void @use(i1 %c.0)
63  %c.1 = icmp eq i32 %p, %d
64  call void @use(i1 %c.1)
65  ret void
66}
67
68
69define void @sdiv1_cmp_range_2(i32 %x, i1 %c) {
70; CHECK-LABEL: @sdiv1_cmp_range_2(
71; CHECK-NEXT:    br i1 [[C:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
72; CHECK:       bb1:
73; CHECK-NEXT:    br label [[BB3:%.*]]
74; CHECK:       bb2:
75; CHECK-NEXT:    br label [[BB3]]
76; CHECK:       bb3:
77; CHECK-NEXT:    [[P:%.*]] = phi i32 [ 3, [[BB1]] ], [ 2, [[BB2]] ]
78; CHECK-NEXT:    [[D:%.*]] = sdiv i32 1, [[X:%.*]]
79; CHECK-NEXT:    call void @use(i1 false)
80; CHECK-NEXT:    call void @use(i1 false)
81; CHECK-NEXT:    ret void
82;
83  br i1 %c, label %bb1, label %bb2
84bb1:
85  br label %bb3
86bb2:
87  br label %bb3
88
89bb3:
90  %p = phi i32 [3, %bb1], [2, %bb2]
91  %d = sdiv i32 1, %x
92  %c.0 = icmp slt i32 %p, %d
93  call void @use(i1 %c.0)
94  %c.1 = icmp eq i32 %p, %d
95  call void @use(i1 %c.1)
96  ret void
97}
98
99define void @urem_cmp_constants() {
100; CHECK-LABEL: @urem_cmp_constants(
101; CHECK-NEXT:    call void @use(i1 true)
102; CHECK-NEXT:    call void @use(i1 false)
103; CHECK-NEXT:    call void @use(i1 true)
104; CHECK-NEXT:    call void @use(i1 false)
105; CHECK-NEXT:    [[UREM_3:%.*]] = urem i16 12704, 0
106; CHECK-NEXT:    [[C_5:%.*]] = icmp eq i16 [[UREM_3]], 1
107; CHECK-NEXT:    call void @use(i1 [[C_5]])
108; CHECK-NEXT:    ret void
109;
110  %sel = select i1 false, i16 0, i16 12704
111  %urem.1 = urem i16 %sel, 12704
112  %c.1 = icmp eq i16 %urem.1, 0
113  call void @use(i1 %c.1)
114  %c.2 = icmp eq i16 %urem.1, 1
115  call void @use(i1 %c.2)
116  %urem.2 = urem i16 %sel, 3
117  %c.3 = icmp eq i16 %urem.2, 2
118  call void @use(i1 %c.3)
119  %c.4 = icmp eq i16 %urem.2, 1
120  call void @use(i1 %c.4)
121  %urem.3 = urem i16 %sel, 0
122  %c.5 = icmp eq i16 %urem.3, 1
123  call void @use(i1 %c.5)
124  ret void
125}
126
127define void @srem_cmp_constants() {
128; CHECK-LABEL: @srem_cmp_constants(
129; CHECK-NEXT:    call void @use(i1 true)
130; CHECK-NEXT:    call void @use(i1 false)
131; CHECK-NEXT:    call void @use(i1 true)
132; CHECK-NEXT:    call void @use(i1 false)
133; CHECK-NEXT:    [[SREM_3:%.*]] = urem i16 12704, 0
134; CHECK-NEXT:    [[C_5:%.*]] = icmp eq i16 [[SREM_3]], 1
135; CHECK-NEXT:    call void @use(i1 [[C_5]])
136; CHECK-NEXT:    ret void
137;
138  %sel = select i1 false, i16 0, i16 12704
139  %srem.1 = srem i16 %sel, 12704
140  %c.1 = icmp eq i16 %srem.1, 0
141  call void @use(i1 %c.1)
142  %c.2 = icmp eq i16 %srem.1, 1
143  call void @use(i1 %c.2)
144  %srem.2 = srem i16 %sel, 3
145  %c.3 = icmp eq i16 %srem.2, 2
146  call void @use(i1 %c.3)
147  %c.4 = icmp eq i16 %srem.2, 1
148  call void @use(i1 %c.4)
149  %srem.3 = srem i16 %sel, 0
150  %c.5 = icmp eq i16 %srem.3, 1
151  call void @use(i1 %c.5)
152  ret void
153}
154