| Dan Gohman | f2f6ce6 | 2009-09-11 18:01:28 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -indvars |
| Dan Gohman | 32a81a3 | 2009-06-24 14:31:06 +0000 | [diff] [blame] | 2 | ; PR4436 |
| 3 | |
| 4 | target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32" |
| 5 | target triple = "i386-pc-linux-gnu" |
| 6 | |
| Dan Gohman | e5aceed | 2009-06-24 14:46:22 +0000 | [diff] [blame] | 7 | define i8* @string_expandtabs(i32 %n, i8* %m) nounwind { |
| Dan Gohman | 32a81a3 | 2009-06-24 14:31:06 +0000 | [diff] [blame] | 8 | entry: |
| 9 | br i1 undef, label %bb33, label %bb1 |
| 10 | |
| 11 | bb1: ; preds = %entry |
| 12 | br i1 undef, label %overflow1, label %bb15 |
| 13 | |
| 14 | bb15: ; preds = %bb1 |
| 15 | br i1 undef, label %bb33, label %bb17 |
| 16 | |
| 17 | bb17: ; preds = %bb15 |
| 18 | br label %bb30 |
| 19 | |
| 20 | bb19: ; preds = %bb30 |
| 21 | br i1 undef, label %bb20, label %bb29 |
| 22 | |
| 23 | bb20: ; preds = %bb19 |
| David Blaikie | 7c9c6ed | 2015-02-27 21:17:42 +0000 | [diff] [blame] | 24 | %0 = load i32, i32* undef, align 4 ; <i32> [#uses=1] |
| Dan Gohman | e5aceed | 2009-06-24 14:46:22 +0000 | [diff] [blame] | 25 | %1 = sub i32 %0, %n ; <i32> [#uses=1] |
| Dan Gohman | 32a81a3 | 2009-06-24 14:31:06 +0000 | [diff] [blame] | 26 | br label %bb23 |
| 27 | |
| 28 | bb21: ; preds = %bb23 |
| Dan Gohman | e5aceed | 2009-06-24 14:46:22 +0000 | [diff] [blame] | 29 | %2 = icmp ult i8* %q.0, %m ; <i1> [#uses=1] |
| Dan Gohman | 32a81a3 | 2009-06-24 14:31:06 +0000 | [diff] [blame] | 30 | br i1 %2, label %bb22, label %overflow2 |
| 31 | |
| 32 | bb22: ; preds = %bb21 |
| David Blaikie | 198d8ba | 2015-02-27 19:29:02 +0000 | [diff] [blame] | 33 | %3 = getelementptr i8, i8* %q.0, i32 1 ; <i8*> [#uses=1] |
| Dan Gohman | 32a81a3 | 2009-06-24 14:31:06 +0000 | [diff] [blame] | 34 | br label %bb23 |
| 35 | |
| 36 | bb23: ; preds = %bb22, %bb20 |
| 37 | %i.2 = phi i32 [ %1, %bb20 ], [ %4, %bb22 ] ; <i32> [#uses=1] |
| 38 | %q.0 = phi i8* [ undef, %bb20 ], [ %3, %bb22 ] ; <i8*> [#uses=3] |
| 39 | %4 = add i32 %i.2, -1 ; <i32> [#uses=2] |
| 40 | %5 = icmp eq i32 %4, -1 ; <i1> [#uses=1] |
| 41 | br i1 %5, label %bb29, label %bb21 |
| 42 | |
| 43 | bb29: ; preds = %bb23, %bb19 |
| 44 | %q.1 = phi i8* [ undef, %bb19 ], [ %q.0, %bb23 ] ; <i8*> [#uses=0] |
| 45 | br label %bb30 |
| 46 | |
| 47 | bb30: ; preds = %bb29, %bb17 |
| 48 | br i1 undef, label %bb19, label %bb33 |
| 49 | |
| 50 | overflow2: ; preds = %bb21 |
| 51 | br i1 undef, label %bb32, label %overflow1 |
| 52 | |
| 53 | bb32: ; preds = %overflow2 |
| 54 | br label %overflow1 |
| 55 | |
| 56 | overflow1: ; preds = %bb32, %overflow2, %bb1 |
| 57 | ret i8* null |
| 58 | |
| 59 | bb33: ; preds = %bb30, %bb15, %entry |
| 60 | ret i8* undef |
| 61 | } |
