1; RUN: opt -mtriple=thumbv8.1m.main-none-none-eabi -passes=hardware-loops %s -o - | FileCheck %s 2 3@g = common local_unnamed_addr global ptr 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 ptr, ptr @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, 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 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