| Michael Kuperstein | 5dd55e8 | 2017-01-26 01:04:11 +0000 | [diff] [blame] | 1 | ; RUN: opt -S -loop-unroll -unroll-runtime -unroll-count=2 -verify-loop-info -pass-remarks=loop-unroll < %s 2>&1 | FileCheck %s |
| 2 | |
| 3 | target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| 4 | target triple = "x86_64-unknown-linux-gnu" |
| 5 | |
| 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 |
| 9 | ; CHECK: @widget |
| 10 | ; CHECK: ret void |
| 11 | define void @widget(double* %arg, double* %arg1, double* %p, i64* %q1, i64* %q2) local_unnamed_addr { |
| 12 | entry: |
| 13 | br label %header.outer |
| 14 | |
| 15 | header.outer: ; preds = %latch.outer, %entry |
| 16 | %tmp = phi double* [ %tmp8, %latch.outer ], [ %arg, %entry ] |
| 17 | br label %header.inner |
| 18 | |
| 19 | header.inner: ; preds = %latch.inner, %header.outer |
| 20 | br i1 undef, label %latch.inner, label %latch.outer |
| 21 | |
| 22 | latch.inner: ; preds = %header.inner |
| 23 | %tmp5 = load i64, i64* %q1, align 8 |
| 24 | store i64 %tmp5, i64* %q2, align 8 |
| 25 | %tmp6 = icmp eq double* %p, %arg |
| 26 | br label %header.inner |
| 27 | |
| 28 | latch.outer: ; preds = %header.inner |
| 29 | store double 0.0, double* %p, align 8 |
| 30 | %tmp8 = getelementptr inbounds double, double* %tmp, i64 1 |
| 31 | %tmp9 = icmp eq double* %tmp8, %arg1 |
| 32 | br i1 %tmp9, label %exit, label %header.outer |
| 33 | |
| 34 | exit: ; preds = %latch.outer |
| 35 | ret void |
| 36 | } |