1; RUN: opt < %s -loop-vectorize -dce -instcombine -pass-remarks=loop-vectorize -pass-remarks-analysis=loop-vectorize -pass-remarks-missed=loop-vectorize -S 2>&1 | FileCheck %s -check-prefix=OVERRIDE
2; RUN: opt < %s -loop-vectorize -pragma-vectorize-memory-check-threshold=6 -dce -instcombine -pass-remarks=loop-vectorize -pass-remarks-analysis=loop-vectorize -pass-remarks-missed=loop-vectorize -S 2>&1 | FileCheck %s
3
4target datalayout = "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-S128"
5
6target triple = "x86_64-unknown-linux"
7
8; First loop produced diagnostic pass remark.
9;CHECK: remark: {{.*}}:0:0: vectorized loop (vectorization width: 4, interleaved count: 2)
10; Second loop produces diagnostic analysis remark.
11;CHECK: remark: {{.*}}:0:0: loop not vectorized: cannot prove it is safe to reorder memory operations
12
13; First loop produced diagnostic pass remark.
14;OVERRIDE: remark: {{.*}}:0:0: vectorized loop (vectorization width: 4, interleaved count: 2)
15; Second loop produces diagnostic pass remark.
16;OVERRIDE: remark: {{.*}}:0:0: loop not vectorized: cannot prove it is safe to reorder memory operations
17
18; We are vectorizing with 6 runtime checks.
19;CHECK-LABEL: func1x6(
20;CHECK: <4 x i32>
21;CHECK: ret
22;OVERRIDE-LABEL: func1x6(
23;OVERRIDE: <4 x i32>
24;OVERRIDE: ret
25define i32 @func1x6(i32* nocapture %out, i32* nocapture %A, i32* nocapture %B, i32* nocapture %C, i32* nocapture %D, i32* nocapture %E, i32* nocapture %F) {
26entry:
27  br label %for.body
28
29for.body:                                         ; preds = %for.body, %entry
30  %i.016 = phi i64 [ 0, %entry ], [ %inc, %for.body ]
31  %arrayidx = getelementptr inbounds i32, i32* %A, i64 %i.016
32  %0 = load i32, i32* %arrayidx, align 4
33  %arrayidx1 = getelementptr inbounds i32, i32* %B, i64 %i.016
34  %1 = load i32, i32* %arrayidx1, align 4
35  %add = add nsw i32 %1, %0
36  %arrayidx2 = getelementptr inbounds i32, i32* %C, i64 %i.016
37  %2 = load i32, i32* %arrayidx2, align 4
38  %add3 = add nsw i32 %add, %2
39  %arrayidx4 = getelementptr inbounds i32, i32* %E, i64 %i.016
40  %3 = load i32, i32* %arrayidx4, align 4
41  %add5 = add nsw i32 %add3, %3
42  %arrayidx6 = getelementptr inbounds i32, i32* %F, i64 %i.016
43  %4 = load i32, i32* %arrayidx6, align 4
44  %add7 = add nsw i32 %add5, %4
45  %arrayidx8 = getelementptr inbounds i32, i32* %out, i64 %i.016
46  store i32 %add7, i32* %arrayidx8, align 4
47  %inc = add i64 %i.016, 1
48  %exitcond = icmp eq i64 %inc, 256
49  br i1 %exitcond, label %for.end, label %for.body
50
51for.end:                                          ; preds = %for.body
52  ret i32 undef
53}
54
55; We are not vectorizing with 12 runtime checks.
56;CHECK-LABEL: func2x6(
57;CHECK-NOT: <4 x i32>
58;CHECK: ret
59; We vectorize with 12 checks if a vectorization hint is provided.
60;OVERRIDE-LABEL: func2x6(
61;OVERRIDE-NOT: <4 x i32>
62;OVERRIDE: ret
63define i32 @func2x6(i32* nocapture %out, i32* nocapture %out2, i32* nocapture %A, i32* nocapture %B, i32* nocapture %C, i32* nocapture %D, i32* nocapture %E, i32* nocapture %F) {
64entry:
65  br label %for.body
66
67for.body:                                         ; preds = %for.body, %entry
68  %i.037 = phi i64 [ 0, %entry ], [ %inc, %for.body ]
69  %arrayidx = getelementptr inbounds i32, i32* %A, i64 %i.037
70  %0 = load i32, i32* %arrayidx, align 4
71  %arrayidx1 = getelementptr inbounds i32, i32* %B, i64 %i.037
72  %1 = load i32, i32* %arrayidx1, align 4
73  %add = add nsw i32 %1, %0
74  %arrayidx2 = getelementptr inbounds i32, i32* %C, i64 %i.037
75  %2 = load i32, i32* %arrayidx2, align 4
76  %add3 = add nsw i32 %add, %2
77  %arrayidx4 = getelementptr inbounds i32, i32* %E, i64 %i.037
78  %3 = load i32, i32* %arrayidx4, align 4
79  %add5 = add nsw i32 %add3, %3
80  %arrayidx6 = getelementptr inbounds i32, i32* %F, i64 %i.037
81  %4 = load i32, i32* %arrayidx6, align 4
82  %add7 = add nsw i32 %add5, %4
83  %arrayidx8 = getelementptr inbounds i32, i32* %out, i64 %i.037
84  store i32 %add7, i32* %arrayidx8, align 4
85  %5 = load i32, i32* %arrayidx, align 4
86  %6 = load i32, i32* %arrayidx1, align 4
87  %add11 = add nsw i32 %6, %5
88  %7 = load i32, i32* %arrayidx2, align 4
89  %add13 = add nsw i32 %add11, %7
90  %8 = load i32, i32* %arrayidx4, align 4
91  %add15 = add nsw i32 %add13, %8
92  %9 = load i32, i32* %arrayidx6, align 4
93  %add17 = add nsw i32 %add15, %9
94  %arrayidx18 = getelementptr inbounds i32, i32* %out2, i64 %i.037
95  store i32 %add17, i32* %arrayidx18, align 4
96  %inc = add i64 %i.037, 1
97  %exitcond = icmp eq i64 %inc, 256
98  br i1 %exitcond, label %for.end, label %for.body
99
100for.end:                                          ; preds = %for.body
101  ret i32 undef
102}
103
104