1; REQUIRES: asserts 2; RUN: opt < %s -S -passes=loop-unroll -unroll-runtime=true -unroll-allow-remainder=true -unroll-count=4 3 4; Make sure that the runtime unroll does not break with a non-exiting latch. 5define i32 @test(ptr %a, ptr %b, ptr %c, i64 %n) { 6entry: 7 br label %while.cond 8 9while.cond: ; preds = %while.body, %entry 10 %i.0 = phi i64 [ 0, %entry ], [ %inc, %while.body ] 11 %cmp = icmp slt i64 %i.0, %n 12 br i1 %cmp, label %while.body, label %while.end 13 14while.body: ; preds = %while.cond 15 %arrayidx = getelementptr inbounds i32, ptr %b, i64 %i.0 16 %0 = load i32, ptr %arrayidx 17 %arrayidx1 = getelementptr inbounds i32, ptr %c, i64 %i.0 18 %1 = load i32, ptr %arrayidx1 19 %mul = mul nsw i32 %0, %1 20 %arrayidx2 = getelementptr inbounds i32, ptr %a, i64 %i.0 21 store i32 %mul, ptr %arrayidx2 22 %inc = add nsw i64 %i.0, 1 23 br label %while.cond 24 25while.end: ; preds = %while.cond 26 ret i32 0 27} 28