1 ; RUN: opt -S -loop-unroll -unroll-runtime -unroll-count=2 -verify-loop-info -pass-remarks=loop-unroll < %s 2>&1 | FileCheck %s
3 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
4 target triple = "x86_64-unknown-linux-gnu"
6 ; Verify that runtime-unrolling a top-level loop that has nested loops does not
7 ; make the unroller produce invalid loop-info.
8 ; CHECK: remark: {{.*}}: unrolled loop by a factor of 2 with run-time trip count
11 define void @widget(double* %arg, double* %arg1, double* %p, i64* %q1, i64* %q2) local_unnamed_addr {
13 br label %header.outer
15 header.outer: ; preds = %latch.outer, %entry
16 %tmp = phi double* [ %tmp8, %latch.outer ], [ %arg, %entry ]
17 br label %header.inner
19 header.inner: ; preds = %latch.inner, %header.outer
20 %tmp5 = load i64, i64* %q1, align 8
21 %tmp6 = icmp eq double* %p, %arg
22 br i1 undef, label %exiting.inner, label %latch.outer
24 exiting.inner: ; preds = %latch.inner, %header.outer
25 br i1 undef, label %latch.inner, label %latch.outer
27 latch.inner: ; preds = %header.inner
28 store i64 %tmp5, i64* %q2, align 8
29 br label %header.inner
31 latch.outer: ; preds = %header.inner
32 store double 0.0, double* %p, align 8
33 %tmp8 = getelementptr inbounds double, double* %tmp, i64 1
34 %tmp9 = icmp eq double* %tmp8, %arg1
35 br i1 %tmp9, label %exit, label %header.outer
37 exit: ; preds = %latch.outer