1 ; RUN: opt -mtriple=thumbv8.1m.main-none-none-eabi -passes=hardware-loops %s -o - | FileCheck %s
3 @g = common local_unnamed_addr global ptr null, align 4
5 ; CHECK-LABEL: counter_too_large
6 ; CHECK-NOT: call void @llvm.set.loop.iterations
7 ; CHECK-NOT: call i32 @llvm.loop.decrement
9 define i32 @counter_too_large(i64 %n) {
11 %cmp7 = icmp eq i64 %n, 0
12 br i1 %cmp7, label %while.end, label %while.body.lr.ph
15 %0 = load ptr, ptr @g, align 4
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, ptr %0, i32 %idxprom
23 %1 = load i32, ptr %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
33 %res.0.lcssa = phi i32 [ 0, %entry ], [ %add, %while.end.loopexit ]