1; RUN: opt -analyze -enable-new-pm=0 -scalar-evolution -S < %s | FileCheck %s
2; RUN: opt -disable-output "-passes=print<scalar-evolution>" -S < %s 2>&1 | FileCheck %s
3
4define i16 @test1(i8 %x) {
5  %A = zext i8 %x to i12
6  %B = sext i12 %A to i16
7; CHECK: zext i8 %x to i16
8  ret i16 %B
9}
10
11define i8 @test2(i8 %x) {
12  %A = zext i8 %x to i16
13  %B = add i16 %A, 1025
14  %C = trunc i16 %B to i8
15; CHECK: (1 + %x)
16  ret i8 %C
17}
18
19define i8 @test3(i8 %x) {
20  %A = zext i8 %x to i16
21  %B = mul i16 %A, 1027
22  %C = trunc i16 %B to i8
23; CHECK: (3 * %x)
24  ret i8 %C
25}
26
27define void @test4(i32 %x, i32 %y) {
28entry:
29  %Y = and i32 %y, 3
30  br label %loop
31loop:
32  %A = phi i32 [0, %entry], [%I, %loop]
33  %rand1 = icmp sgt i32 %A, %Y
34  %Z1 = select i1 %rand1, i32 %A, i32 %Y
35  %rand2 = icmp ugt i32 %A, %Z1
36  %Z2 = select i1 %rand2, i32 %A, i32 %Z1
37; CHECK: %Z2 =
38; CHECK-NEXT: -->  ([[EXPR:.*]]){{ U: [^ ]+ S: [^ ]+}}{{ +}}Exits: 20
39  %B = trunc i32 %Z2 to i16
40  %C = sext i16 %B to i30
41; CHECK: %C =
42; CHECK-NEXT: (trunc i32 ([[EXPR]]) to i30)
43  %D = sext i16 %B to i32
44; CHECK: %D =
45; CHECK-NEXT: ([[EXPR]])
46  %E = sext i16 %B to i34
47; CHECK: %E =
48; CHECK-NEXT: (zext i32 ([[EXPR]]) to i34)
49  %F = zext i16 %B to i30
50; CHECK: %F =
51; CHECK-NEXT: (trunc i32 ([[EXPR]]) to i30
52  %G = zext i16 %B to i32
53; CHECK: %G =
54; CHECK-NEXT: ([[EXPR]])
55  %H = zext i16 %B to i34
56; CHECK: %H =
57; CHECK-NEXT: (zext i32 ([[EXPR]]) to i34)
58  %I = add i32 %A, 1
59  %0 = icmp ne i32 %A, 20
60  br i1 %0, label %loop, label %exit
61exit:
62  ret void
63}
64
65define void @test5(i32 %i) {
66; CHECK-LABEL: @test5
67  %A = and i32 %i, 1
68; CHECK: -->  (zext i1 (trunc i32 %i to i1) to i32)
69  %B = and i32 %i, 2
70; CHECK: -->  (2 * (zext i1 (trunc i32 (%i /u 2) to i1) to i32))
71  %C = and i32 %i, 63
72; CHECK: -->  (zext i6 (trunc i32 %i to i6) to i32)
73  %D = and i32 %i, 126
74; CHECK: -->  (2 * (zext i6 (trunc i32 (%i /u 2) to i6) to i32))
75  %E = and i32 %i, 64
76; CHECK: -->  (64 * (zext i1 (trunc i32 (%i /u 64) to i1) to i32))
77  %F = and i32 %i, -2147483648
78; CHECK: -->  (-2147483648 * (%i /u -2147483648))
79  ret void
80}
81
82define void @test6(i8 %x) {
83; CHECK-LABEL: @test6
84  %A = zext i8 %x to i16
85  %B = shl nuw i16 %A, 8
86  %C = and i16 %B, -2048
87; CHECK: -->  (2048 * ((zext i8 %x to i16) /u 8))
88  ret void
89}
90
91; PR22960
92define void @test7(i32 %A) {
93; CHECK-LABEL: @test7
94  %B = sext i32 %A to i64
95  %C = zext i32 %A to i64
96  %D = sub i64 %B, %C
97  %E = trunc i64 %D to i16
98; CHECK: %E
99; CHECK-NEXT: -->  0
100  ret void
101}
102
103define i64 @test8(i64 %a) {
104; CHECK-LABEL: @test8
105  %t0 = udiv i64 %a, 56
106  %t1 = udiv i64 %t0, 56
107; CHECK: %t1
108; CHECK-NEXT: -->  (%a /u 3136)
109  ret i64 %t1
110}
111
112define i64 @test9(i64 %a) {
113; CHECK-LABEL: @test9
114  %t0 = udiv i64 %a, 100000000000000
115  %t1 = udiv i64 %t0, 100000000000000
116; CHECK: %t1
117; CHECK-NEXT: -->  0
118  ret i64 %t1
119}
120
121define i64 @test10(i64 %a, i64 %b) {
122; CHECK-LABEL: @test10
123  %t0 = udiv i64 %a, 100000000000000
124  %t1 = udiv i64 %t0, 100000000000000
125  %t2 = mul i64 %b, %t1
126; CHECK: %t2
127; CHECK-NEXT: -->  0
128  ret i64 %t2
129}
130
131define i64 @test11(i64 %a) {
132; CHECK-LABEL: @test11
133  %t0 = udiv i64 0, %a
134; CHECK: %t0
135; CHECK-NEXT: -->  0
136  ret i64 %t0
137}
138