1 ; RUN: opt < %s -indvars -S -enable-iv-rewrite=false "-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 -enable-iv-rewrite=true "-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
3 ; RUN: opt < %s -indvars -S -enable-iv-rewrite=false "-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
4 ; RUN: opt < %s -indvars -S -enable-iv-rewrite=true "-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
6 ; PR11279: Assertion !IVLimit->getType()->isPointerTy()
8 ; Test LinearFunctionTestReplace of a pointer-type loop counter. Note
9 ; that BECount may or may not be a pointer type. A pointer type
10 ; BECount doesn't really make sense, but that's what falls out of
11 ; SCEV. Since it's an i8*, it has unit stride so we never adjust the
12 ; SCEV expression in a way that would convert it to an integer type.
14 ; CHECK: @testnullptrptr
17 define i8 @testnullptrptr(i8* %buf, i8* %end) nounwind {
21 %guard = icmp ult i8* null, %end
22 br i1 %guard, label %preheader, label %exit
28 %p.01.us.us = phi i8* [ null, %preheader ], [ %gep, %loop ]
29 %s = phi i8 [0, %preheader], [%snext, %loop]
30 %gep = getelementptr inbounds i8* %p.01.us.us, i64 1
31 %snext = load i8* %gep
32 %cmp = icmp ult i8* %gep, %end
33 br i1 %cmp, label %loop, label %exit
42 define i8 @testptrptr(i8* %buf, i8* %end) nounwind {
46 %guard = icmp ult i8* %buf, %end
47 br i1 %guard, label %preheader, label %exit
53 %p.01.us.us = phi i8* [ %buf, %preheader ], [ %gep, %loop ]
54 %s = phi i8 [0, %preheader], [%snext, %loop]
55 %gep = getelementptr inbounds i8* %p.01.us.us, i64 1
56 %snext = load i8* %gep
57 %cmp = icmp ult i8* %gep, %end
58 br i1 %cmp, label %loop, label %exit
64 ; CHECK: @testnullptrint
67 define i8 @testnullptrint(i8* %buf, i8* %end) nounwind {
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
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* %p.01.us.us, i64 1
85 %snext = load i8* %gep
86 %ivnext = add i32 %iv, 1
87 %cmp = icmp ult i32 %ivnext, %cnt
88 br i1 %cmp, label %loop, label %exit
97 define i8 @testptrint(i8* %buf, i8* %end) nounwind {
101 %bi = ptrtoint i8* %buf to i32
102 %ei = ptrtoint i8* %end to i32
103 %cnt = sub i32 %ei, %bi
104 %guard = icmp ult i32 %bi, %cnt
105 br i1 %guard, label %preheader, label %exit
111 %p.01.us.us = phi i8* [ %buf, %preheader ], [ %gep, %loop ]
112 %iv = phi i32 [ %bi, %preheader ], [ %ivnext, %loop ]
113 %s = phi i8 [0, %preheader], [%snext, %loop]
114 %gep = getelementptr inbounds i8* %p.01.us.us, i64 1
115 %snext = load i8* %gep
116 %ivnext = add i32 %iv, 1
117 %cmp = icmp ult i32 %ivnext, %cnt
118 br i1 %cmp, label %loop, label %exit
124 ; IV and BECount have two different pointer types here.
125 define void @testnullptr([512 x i8]* %base) nounwind {
127 %add.ptr1603 = getelementptr [512 x i8]* %base, i64 0, i64 512
131 %cmp1604192 = icmp ult i8* undef, %add.ptr1603
132 br i1 %cmp1604192, label %for.body, label %for.end1609
135 %r.17193 = phi i8* [ %incdec.ptr1608, %for.body ], [ null, %preheader ]
136 %incdec.ptr1608 = getelementptr i8* %r.17193, i64 1
137 %cmp1604 = icmp ult i8* %incdec.ptr1608, %add.ptr1603
138 br i1 %cmp1604, label %for.body, label %for.end1609