| Gerolf Hoflehner | 5b4a67a | 2018-04-17 07:22:34 +0000 | [diff] [blame] | 1 | ; RUN: llc < %s |
| 2 | |
| 3 | ; llc built with address sanitizer crashes because of a dangling node pointer |
| 4 | ; oss-fuzz - DAGCombiner::useDivRem (5011) |
| 5 | |
| 6 | define void @f() { |
| 7 | BB: |
| 8 | %A19 = alloca i1** |
| 9 | %C18 = icmp ugt i1 true, false |
| 10 | %L13 = load i8, i8* undef |
| 11 | %L10 = load i8, i8* undef |
| 12 | %B12 = and i8 %L13, %L10 |
| 13 | %B35 = and i8 %B12, %L10 |
| 14 | %L2 = load i66*, i66** undef |
| 15 | %L23 = load i66, i66* %L2 |
| 16 | %B38 = urem i8 %B35, %B12 |
| 17 | %B9 = ashr i66 %L23, %L23 |
| 18 | %C11 = icmp sge i8 %B38, %B35 |
| 19 | %A4 = alloca i66 |
| 20 | %G4 = getelementptr i66, i66* %A4, i1 true |
| 21 | %L6 = load i66, i66* %G4 |
| 22 | %B21 = urem i1 %C11, true |
| 23 | %B1 = mul i66 %B9, %L23 |
| 24 | %B5 = udiv i8 %L10, %L13 |
| 25 | %B22 = udiv i66 %B9, %B1 |
| 26 | %C29 = icmp ult i32 -1, 0 |
| 27 | store i1* undef, i1** undef |
| 28 | store i1 %C29, i1* undef |
| 29 | br label %BB1 |
| 30 | |
| 31 | BB1: ; preds = %BB |
| 32 | %G8 = getelementptr i66, i66* undef, i16 32767 |
| 33 | %G43 = getelementptr i66, i66* undef, i66 -1 |
| 34 | %L20 = load i1, i1* undef |
| 35 | %B7 = and i66 %L6, %L6 |
| 36 | %B30 = sdiv i66 -36893488147419103232, -1 |
| 37 | %B16 = urem i66 %B22, %L6 |
| 38 | %G47 = getelementptr i66, i66* %G8, i66 %B16 |
| 39 | store i66 %B7, i66* %G47 |
| 40 | store i8 %B5, i8* undef |
| 41 | %C5 = icmp ult i1 %C18, %L20 |
| 42 | store i66 %B30, i66* %G47 |
| 43 | store i1** undef, i1*** %A19 |
| 44 | store i1 %C5, i1* undef |
| 45 | store i1 %C11, i1* undef |
| 46 | store i66* %G43, i66** undef |
| 47 | store i1 %B21, i1* undef |
| 48 | %G59 = getelementptr i1, i1* undef, i1 false |
| 49 | %G61 = getelementptr i66, i66* %G8, i1 %L20 |
| 50 | store i1 %L20, i1* %G59 |
| 51 | store i66* %G61, i66** undef |
| 52 | ret void |
| 53 | } |