1; RUN: opt < %s -indvars -S "-default-data-layout=e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" | FileCheck %s
2; RUN: opt < %s -indvars -S "-default-data-layout=e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32" | FileCheck %s
3;
4; PR11279: Assertion !IVLimit->getType()->isPointerTy()
5;
6; Test LinearFunctionTestReplace of a pointer-type loop counter. Note
7; that BECount may or may not be a pointer type. A pointer type
8; BECount doesn't really make sense, but that's what falls out of
9; SCEV. Since it's an i8*, it has unit stride so we never adjust the
10; SCEV expression in a way that would convert it to an integer type.
11
12; CHECK-LABEL: @testnullptrptr(
13; CHECK: loop:
14; CHECK: icmp ne
15define i8 @testnullptrptr(i8* %buf, i8* %end) nounwind {
16  br label %loopguard
17
18loopguard:
19  %guard = icmp ult i8* null, %end
20  br i1 %guard, label %preheader, label %exit
21
22preheader:
23  br label %loop
24
25loop:
26  %p.01.us.us = phi i8* [ null, %preheader ], [ %gep, %loop ]
27  %s = phi i8 [0, %preheader], [%snext, %loop]
28  %gep = getelementptr inbounds i8, i8* %p.01.us.us, i64 1
29  %snext = load i8, i8* %gep
30  %cmp = icmp ult i8* %gep, %end
31  br i1 %cmp, label %loop, label %exit
32
33exit:
34  %ret = phi i8 [0, %loopguard], [%snext, %loop]
35  ret i8 %ret
36}
37
38; CHECK-LABEL: @testptrptr(
39; CHECK: loop:
40; CHECK: icmp ne
41define i8 @testptrptr(i8* %buf, i8* %end) nounwind {
42  br label %loopguard
43
44loopguard:
45  %guard = icmp ult i8* %buf, %end
46  br i1 %guard, label %preheader, label %exit
47
48preheader:
49  br label %loop
50
51loop:
52  %p.01.us.us = phi i8* [ %buf, %preheader ], [ %gep, %loop ]
53  %s = phi i8 [0, %preheader], [%snext, %loop]
54  %gep = getelementptr inbounds i8, i8* %p.01.us.us, i64 1
55  %snext = load i8, i8* %gep
56  %cmp = icmp ult i8* %gep, %end
57  br i1 %cmp, label %loop, label %exit
58
59exit:
60  %ret = phi i8 [0, %loopguard], [%snext, %loop]
61  ret i8 %ret
62}
63
64; CHECK-LABEL: @testnullptrint(
65; CHECK: loop:
66; CHECK: icmp ne
67define i8 @testnullptrint(i8* %buf, i8* %end) nounwind {
68  br label %loopguard
69
70loopguard:
71  %bi = ptrtoint i8* %buf to i32
72  %ei = ptrtoint i8* %end to i32
73  %cnt = sub i32 %ei, %bi
74  %guard = icmp ult i32 0, %cnt
75  br i1 %guard, label %preheader, label %exit
76
77preheader:
78  br label %loop
79
80loop:
81  %p.01.us.us = phi i8* [ null, %preheader ], [ %gep, %loop ]
82  %iv = phi i32 [ 0, %preheader ], [ %ivnext, %loop ]
83  %s = phi i8 [0, %preheader], [%snext, %loop]
84  %gep = getelementptr inbounds i8, i8* %p.01.us.us, i64 1
85  %snext = load i8, i8* %gep
86  %ivnext = add i32 %iv, 1
87  %cmp = icmp ult i32 %ivnext, %cnt
88  br i1 %cmp, label %loop, label %exit
89
90exit:
91  %ret = phi i8 [0, %loopguard], [%snext, %loop]
92  ret i8 %ret
93}
94
95; CHECK-LABEL: @testptrint(
96; CHECK: loop:
97; CHECK: icmp ne
98define i8 @testptrint(i8* %buf, i8* %end) nounwind {
99  br label %loopguard
100
101loopguard:
102  %bi = ptrtoint i8* %buf to i32
103  %ei = ptrtoint i8* %end to i32
104  %cnt = sub i32 %ei, %bi
105  %guard = icmp ult i32 %bi, %cnt
106  br i1 %guard, label %preheader, label %exit
107
108preheader:
109  br label %loop
110
111loop:
112  %p.01.us.us = phi i8* [ %buf, %preheader ], [ %gep, %loop ]
113  %iv = phi i32 [ %bi, %preheader ], [ %ivnext, %loop ]
114  %s = phi i8 [0, %preheader], [%snext, %loop]
115  %gep = getelementptr inbounds i8, i8* %p.01.us.us, i64 1
116  %snext = load i8, i8* %gep
117  %ivnext = add i32 %iv, 1
118  %cmp = icmp ult i32 %ivnext, %cnt
119  br i1 %cmp, label %loop, label %exit
120
121exit:
122  %ret = phi i8 [0, %loopguard], [%snext, %loop]
123  ret i8 %ret
124}
125
126; IV and BECount have two different pointer types here.
127define void @testnullptr([512 x i8]* %base) nounwind {
128entry:
129  %add.ptr1603 = getelementptr [512 x i8], [512 x i8]* %base, i64 0, i64 512
130  br label %preheader
131
132preheader:
133  %cmp1604192 = icmp ult i8* undef, %add.ptr1603
134  br i1 %cmp1604192, label %for.body, label %for.end1609
135
136for.body:
137  %r.17193 = phi i8* [ %incdec.ptr1608, %for.body ], [ null, %preheader ]
138  %incdec.ptr1608 = getelementptr i8, i8* %r.17193, i64 1
139  %cmp1604 = icmp ult i8* %incdec.ptr1608, %add.ptr1603
140  br i1 %cmp1604, label %for.body, label %for.end1609
141
142for.end1609:
143  unreachable
144}
145