1; RUN: opt < %s -S -loop-unroll -unroll-allow-partial -unroll-max-count=1 | FileCheck %s
2; Checks that unroll MaxCount is honored.
3;
4; CHECK-LABEL: @foo(
5; CHECK-LABEL: for.body:
6; CHECK-NEXT: phi
7; CHECK-NEXT: getelementptr
8; CHECK-NEXT: load
9; CHECK-NEXT: add
10; CHECK-NEXT: store
11; CHECK-NEXT: add
12; CHECK-NEXT: icmp
13; CHECK-NEXT: br
14define void @foo(i32* nocapture %a) {
15entry:
16  br label %for.body
17
18for.body:                                         ; preds = %for.body, %entry
19  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
20  %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv
21  %0 = load i32, i32* %arrayidx, align 4
22  %inc = add nsw i32 %0, 1
23  store i32 %inc, i32* %arrayidx, align 4
24  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
25  %exitcond = icmp eq i64 %indvars.iv.next, 1024
26  br i1 %exitcond, label %for.end, label %for.body
27
28for.end:                                          ; preds = %for.body
29  ret void
30}
31
32