1; RUN: opt -mtriple=thumbv8.1m.main-none-none-eabi -hardware-loops %s -o - | FileCheck %s
2
3@g = common local_unnamed_addr global i32* null, align 4
4
5; CHECK-LABEL: counter_too_large
6; CHECK-NOT: call void @llvm.set.loop.iterations
7; CHECK-NOT: call i32 @llvm.loop.decrement
8
9define i32 @counter_too_large(i64 %n) {
10entry:
11  %cmp7 = icmp eq i64 %n, 0
12  br i1 %cmp7, label %while.end, label %while.body.lr.ph
13
14while.body.lr.ph:
15  %0 = load i32*, i32** @g, align 4
16  br label %while.body
17
18while.body:
19  %i.09 = phi i64 [ 0, %while.body.lr.ph ], [ %inc1, %while.body ]
20  %res.08 = phi i32 [ 0, %while.body.lr.ph ], [ %add, %while.body ]
21  %idxprom = trunc i64 %i.09 to i32
22  %arrayidx = getelementptr inbounds i32, i32* %0, i32 %idxprom
23  %1 = load i32, i32* %arrayidx, align 4
24  %add = add nsw i32 %1, %res.08
25  %inc1 = add nuw i64 %i.09, 1
26  %cmp = icmp ult i64 %inc1, %n
27  br i1 %cmp, label %while.body, label %while.end.loopexit
28
29while.end.loopexit:
30  br label %while.end
31
32while.end:
33  %res.0.lcssa = phi i32 [ 0, %entry ], [ %add, %while.end.loopexit ]
34  ret i32 %res.0.lcssa
35}
36