1 ; RUN: opt < %s -passes=loop-vectorize,transform-warning -S 2>&1 | FileCheck %s
3 ; Like no_array_bounds.ll we verify warnings are generated when vectorization/interleaving is
4 ; explicitly specified and fails to occur for both fixed and scalable vectorize.width loop hints.
6 ; #pragma clang loop vectorize(enable)
7 ; for (int i = 0; i < number; i++) {
11 ; CHECK: warning: <unknown>:0:0: loop not interleaved: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering
12 define dso_local void @foo(ptr nocapture %A, ptr nocapture readonly %B, i32 %N) {
14 %cmp7 = icmp sgt i32 %N, 0
15 br i1 %cmp7, label %for.body.preheader, label %for.end
17 for.body.preheader: ; preds = %entry
18 %wide.trip.count = zext i32 %N to i64
21 for.body: ; preds = %for.body.preheader, %for.body
22 %indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
23 %arrayidx = getelementptr inbounds i32, ptr %B, i64 %indvars.iv
24 %0 = load i32, ptr %arrayidx, align 4
25 %idxprom1 = sext i32 %0 to i64
26 %arrayidx2 = getelementptr inbounds i32, ptr %A, i64 %idxprom1
27 %1 = load i32, ptr %arrayidx2, align 4
28 %inc = add nsw i32 %1, 1
29 store i32 %inc, ptr %arrayidx2, align 4
30 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
31 %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
32 br i1 %exitcond.not, label %for.end, label %for.body, !llvm.loop !0
34 for.end: ; preds = %for.body, %entry
38 ; CHECK: warning: <unknown>:0:0: loop not vectorized: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering
39 define dso_local void @foo2(ptr nocapture %A, ptr nocapture readonly %B, i32 %N) {
41 %cmp7 = icmp sgt i32 %N, 0
42 br i1 %cmp7, label %for.body.preheader, label %for.end
44 for.body.preheader: ; preds = %entry
45 %wide.trip.count = zext i32 %N to i64
48 for.body: ; preds = %for.body.preheader, %for.body
49 %indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
50 %arrayidx = getelementptr inbounds i32, ptr %B, i64 %indvars.iv
51 %0 = load i32, ptr %arrayidx, align 4
52 %idxprom1 = sext i32 %0 to i64
53 %arrayidx2 = getelementptr inbounds i32, ptr %A, i64 %idxprom1
54 %1 = load i32, ptr %arrayidx2, align 4
55 %inc = add nsw i32 %1, 1
56 store i32 %inc, ptr %arrayidx2, align 4
57 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
58 %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
59 br i1 %exitcond.not, label %for.end, label %for.body, !llvm.loop !3
61 for.end: ; preds = %for.body, %entry
65 !0 = distinct !{!0, !1, !2}
66 !1 = !{!"llvm.loop.vectorize.enable", i1 true}
67 !2 = !{!"llvm.loop.vectorize.width", i32 1}
68 !3 = distinct !{!3, !1, !2, !4}
69 !4 = !{!"llvm.loop.vectorize.scalable.enable", i1 true}