1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -passes=loop-vectorize -force-vector-width=1 -force-vector-interleave=2 -S %s | FileCheck --check-prefix=VF1 %s
3; RUN: opt -passes=loop-vectorize -force-vector-width=2 -force-vector-interleave=1 -S %s | FileCheck --check-prefix=VF2 %s
4
5@f = external dso_local global i32, align 4
6
7define void @int_iv_based_on_pointer_iv(i8* %A) {
8; VF1-LABEL: @int_iv_based_on_pointer_iv(
9; VF1:       vector.body:
10; VF1-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %vector.ph ], [ [[INDEX_NEXT:%.*]], %vector.body ]
11; VF1-NEXT:    [[OFFSET_IDX:%.*]] = mul i64 [[INDEX]], 4
12; VF1-NEXT:    [[INDUCTION:%.*]] = add i64 [[OFFSET_IDX]], 0
13; VF1-NEXT:    [[INDUCTION3:%.*]] = add i64 [[OFFSET_IDX]], 4
14; VF1-NEXT:    [[TMP3:%.*]] = add i64 [[INDEX]], 0
15; VF1-NEXT:    [[NEXT_GEP:%.*]] = getelementptr i32, i32* null, i64 [[TMP3]]
16; VF1-NEXT:    [[TMP4:%.*]] = add i64 [[INDEX]], 1
17; VF1-NEXT:    [[NEXT_GEP4:%.*]] = getelementptr i32, i32* null, i64 [[TMP4]]
18; VF1-NEXT:    [[TMP5:%.*]] = getelementptr inbounds i32, i32* [[NEXT_GEP]], i64 1
19; VF1-NEXT:    [[TMP6:%.*]] = getelementptr inbounds i32, i32* [[NEXT_GEP4]], i64 1
20; VF1-NEXT:    [[TMP7:%.*]] = getelementptr inbounds i8, i8* [[A:%.*]], i64 [[INDUCTION]]
21; VF1-NEXT:    [[TMP8:%.*]] = getelementptr inbounds i8, i8* [[A]], i64 [[INDUCTION3]]
22; VF1-NEXT:    store i8 0, i8* [[TMP7]], align 1
23; VF1-NEXT:    store i8 0, i8* [[TMP8]], align 1
24; VF1-NEXT:    [[TMP9:%.*]] = ptrtoint i32* [[TMP5]] to i64
25; VF1-NEXT:    [[TMP10:%.*]] = ptrtoint i32* [[TMP6]] to i64
26; VF1-NEXT:    [[TMP11:%.*]] = sub i64 ptrtoint (i32* @f to i64), [[TMP9]]
27; VF1-NEXT:    [[TMP12:%.*]] = sub i64 ptrtoint (i32* @f to i64), [[TMP10]]
28; VF1-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2
29; VF1-NEXT:    [[TMP13:%.*]] = icmp eq i64 [[INDEX_NEXT]],
30; VF1-NEXT:    br i1 [[TMP13]], label %middle.block, label %vector.body
31;
32; VF2-LABEL: @int_iv_based_on_pointer_iv(
33; VF2:       vector.body:
34; VF2-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %vector.ph ], [ [[INDEX_NEXT:%.*]], %vector.body ]
35; VF2-NEXT:    [[OFFSET_IDX:%.*]] = mul i64 [[INDEX]], 4
36; VF2-NEXT:    [[TMP3:%.*]] = add i64 [[OFFSET_IDX]], 0
37; VF2-NEXT:    [[TMP4:%.*]] = add i64 [[OFFSET_IDX]], 4
38; VF2-NEXT:    [[TMP5:%.*]] = add i64 [[INDEX]], 0
39; VF2-NEXT:    [[NEXT_GEP:%.*]] = getelementptr i32, i32* null, i64 [[TMP5]]
40; VF2-NEXT:    [[TMP6:%.*]] = add i64 [[INDEX]], 1
41; VF2-NEXT:    [[NEXT_GEP3:%.*]] = getelementptr i32, i32* null, i64 [[TMP6]]
42; VF2-NEXT:    [[TMP7:%.*]] = getelementptr inbounds i32, i32* [[NEXT_GEP]], i64 1
43; VF2-NEXT:    [[TMP8:%.*]] = getelementptr inbounds i32, i32* [[NEXT_GEP3]], i64 1
44; VF2-NEXT:    [[TMP9:%.*]] = getelementptr inbounds i8, i8* [[A:%.*]], i64 [[TMP3]]
45; VF2-NEXT:    [[TMP10:%.*]] = getelementptr inbounds i8, i8* [[A]], i64 [[TMP4]]
46; VF2-NEXT:    store i8 0, i8* [[TMP9]], align 1
47; VF2-NEXT:    store i8 0, i8* [[TMP10]], align 1
48; VF2-NEXT:    [[TMP11:%.*]] = ptrtoint i32* [[TMP7]] to i64
49; VF2-NEXT:    [[TMP12:%.*]] = ptrtoint i32* [[TMP8]] to i64
50; VF2-NEXT:    [[TMP13:%.*]] = sub i64 ptrtoint (i32* @f to i64), [[TMP11]]
51; VF2-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2
52; VF2-NEXT:    [[TMP14:%.*]] = icmp eq i64 [[INDEX_NEXT]],
53; VF2-NEXT:    br i1 [[TMP14]], label %middle.block, label %vector.body
54;
55entry:
56  br label %loop
57
58loop:
59  %iv.int = phi i64 [ 0, %entry ], [ %iv.int.next, %loop ]
60  %iv.ptr = phi i32* [ null, %entry ], [ %iv.ptr.next, %loop ]
61  %iv.ptr.next = getelementptr inbounds i32, i32* %iv.ptr, i64 1
62  %gep.A = getelementptr inbounds i8, i8* %A, i64 %iv.int
63  store i8 0, i8* %gep.A
64  %iv.int.next = ptrtoint i32* %iv.ptr.next to i64
65  %sub.ptr.sub = sub i64 ptrtoint (i32* @f to i64), %iv.int.next
66  %cmp = icmp sgt i64 %sub.ptr.sub, 0
67  br i1 %cmp, label %loop, label %exit
68
69exit:
70  ret void
71}
72