| Michael Zolotukhin | 8c68171 | 2015-05-12 17:20:03 +0000 | [diff] [blame] | 1 | ; Check that we don't crash on corner cases. |
| Chandler Carruth | 9dabd14 | 2015-06-05 17:01:43 +0000 | [diff] [blame^] | 2 | ; RUN: opt < %s -S -loop-unroll -unroll-max-iteration-count-to-analyze=1000 -unroll-threshold=10 -unroll-percent-dynamic-cost-saved-threshold=20 -o /dev/null |
| Michael Zolotukhin | 8c68171 | 2015-05-12 17:20:03 +0000 | [diff] [blame] | 3 | target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| 4 | |
| 5 | define void @foo1() { |
| 6 | entry: |
| 7 | br label %for.body |
| 8 | |
| 9 | for.body: |
| 10 | %phi = phi i64 [ 0, %entry ], [ %inc, %for.body ] |
| 11 | %idx = zext i32 undef to i64 |
| 12 | %add.ptr = getelementptr inbounds i64, i64* null, i64 %idx |
| 13 | %inc = add nuw nsw i64 %phi, 1 |
| 14 | %cmp = icmp ult i64 %inc, 999 |
| 15 | br i1 %cmp, label %for.body, label %for.exit |
| 16 | |
| 17 | for.exit: |
| 18 | ret void |
| 19 | } |
| 20 | |
| 21 | define void @foo2() { |
| 22 | entry: |
| 23 | br label %for.body |
| 24 | |
| 25 | for.body: |
| 26 | %phi = phi i64 [ 0, %entry ], [ %inc, %for.body ] |
| 27 | %x = getelementptr i32, <4 x i32*> undef, <4 x i32> <i32 1, i32 1, i32 1, i32 1> |
| 28 | %inc = add nuw nsw i64 %phi, 1 |
| 29 | %cmp = icmp ult i64 %inc, 999 |
| 30 | br i1 %cmp, label %for.body, label %for.exit |
| 31 | |
| 32 | for.exit: |
| 33 | ret void |
| 34 | } |