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; RUN: opt < %s -passes=loop-vectorize,transform-warning -S 2>&1 | FileCheck %s
; Like no_array_bounds.ll we verify warnings are generated when vectorization/interleaving is
; explicitly specified and fails to occur for both fixed and scalable vectorize.width loop hints.
; #pragma clang loop vectorize(enable)
; for (int i = 0; i < number; i++) {
; A[B[i]]++;
; }
; 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
define dso_local void @foo(ptr nocapture %A, ptr nocapture readonly %B, i32 %N) {
entry:
%cmp7 = icmp sgt i32 %N, 0
br i1 %cmp7, label %for.body.preheader, label %for.end
for.body.preheader: ; preds = %entry
%wide.trip.count = zext i32 %N to i64
br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
%indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
%arrayidx = getelementptr inbounds i32, ptr %B, i64 %indvars.iv
%0 = load i32, ptr %arrayidx, align 4
%idxprom1 = sext i32 %0 to i64
%arrayidx2 = getelementptr inbounds i32, ptr %A, i64 %idxprom1
%1 = load i32, ptr %arrayidx2, align 4
%inc = add nsw i32 %1, 1
store i32 %inc, ptr %arrayidx2, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
br i1 %exitcond.not, label %for.end, label %for.body, !llvm.loop !0
for.end: ; preds = %for.body, %entry
ret void
}
; 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
define dso_local void @foo2(ptr nocapture %A, ptr nocapture readonly %B, i32 %N) {
entry:
%cmp7 = icmp sgt i32 %N, 0
br i1 %cmp7, label %for.body.preheader, label %for.end
for.body.preheader: ; preds = %entry
%wide.trip.count = zext i32 %N to i64
br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
%indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
%arrayidx = getelementptr inbounds i32, ptr %B, i64 %indvars.iv
%0 = load i32, ptr %arrayidx, align 4
%idxprom1 = sext i32 %0 to i64
%arrayidx2 = getelementptr inbounds i32, ptr %A, i64 %idxprom1
%1 = load i32, ptr %arrayidx2, align 4
%inc = add nsw i32 %1, 1
store i32 %inc, ptr %arrayidx2, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
br i1 %exitcond.not, label %for.end, label %for.body, !llvm.loop !3
for.end: ; preds = %for.body, %entry
ret void
}
!0 = distinct !{!0, !1, !2}
!1 = !{!"llvm.loop.vectorize.enable", i1 true}
!2 = !{!"llvm.loop.vectorize.width", i32 1}
!3 = distinct !{!3, !1, !2, !4}
!4 = !{!"llvm.loop.vectorize.scalable.enable", i1 true}
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