| Dan Gohman | 1880092 | 2009-09-11 18:01:28 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -loop-index-split -stats -disable-output |& grep "1 loop-index-split" |
| Devang Patel | 647a1e5 | 2008-10-10 22:02:57 +0000 | [diff] [blame] | 2 | ; PR 2869 |
| 3 | |
| 4 | @w = external global [2 x [2 x i32]] ; <[2 x [2 x i32]]*> [#uses=5] |
| 5 | |
| 6 | declare i32 @f() nounwind |
| 7 | |
| 8 | define i32 @main() noreturn nounwind { |
| 9 | entry: |
| 10 | br label %bb1.i.outer |
| 11 | |
| 12 | bb1.i.outer: ; preds = %bb5.i, %entry |
| Devang Patel | c56423b | 2008-12-04 21:38:42 +0000 | [diff] [blame] | 13 | %i.0.reg2mem.0.ph.i.ph = phi i32 [ 0, %entry ], [ %indvar.next1, %bb5.i ] ; <i32> [#uses=3] |
| Devang Patel | 647a1e5 | 2008-10-10 22:02:57 +0000 | [diff] [blame] | 14 | br label %bb1.i |
| 15 | |
| 16 | bb1.i: ; preds = %bb3.i, %bb1.i.outer |
| Devang Patel | c56423b | 2008-12-04 21:38:42 +0000 | [diff] [blame] | 17 | %j.0.reg2mem.0.i = phi i32 [ 0, %bb1.i.outer ], [ %indvar.next, %bb3.i ] ; <i32> [#uses=3] |
| Devang Patel | 647a1e5 | 2008-10-10 22:02:57 +0000 | [diff] [blame] | 18 | %0 = icmp eq i32 %i.0.reg2mem.0.ph.i.ph, %j.0.reg2mem.0.i ; <i1> [#uses=1] |
| 19 | br i1 %0, label %bb2.i, label %bb3.i |
| 20 | |
| 21 | bb2.i: ; preds = %bb1.i |
| 22 | %1 = getelementptr [2 x [2 x i32]]* @w, i32 0, i32 %i.0.reg2mem.0.ph.i.ph, i32 %j.0.reg2mem.0.i ; <i32*> [#uses=1] |
| 23 | store i32 1, i32* %1, align 4 |
| 24 | br label %bb3.i |
| 25 | |
| 26 | bb3.i: ; preds = %bb2.i, %bb1.i |
| Devang Patel | c56423b | 2008-12-04 21:38:42 +0000 | [diff] [blame] | 27 | %indvar.next = add i32 %j.0.reg2mem.0.i, 1 ; <i32> [#uses=2] |
| 28 | %exitcond = icmp eq i32 %indvar.next, 2 ; <i1> [#uses=1] |
| 29 | br i1 %exitcond, label %bb5.i, label %bb1.i |
| Devang Patel | 647a1e5 | 2008-10-10 22:02:57 +0000 | [diff] [blame] | 30 | |
| 31 | bb5.i: ; preds = %bb3.i |
| Devang Patel | c56423b | 2008-12-04 21:38:42 +0000 | [diff] [blame] | 32 | %indvar.next1 = add i32 %i.0.reg2mem.0.ph.i.ph, 1 ; <i32> [#uses=2] |
| 33 | %exitcond2 = icmp eq i32 %indvar.next1, 2 ; <i1> [#uses=1] |
| 34 | br i1 %exitcond2, label %f.exit, label %bb1.i.outer |
| Devang Patel | 647a1e5 | 2008-10-10 22:02:57 +0000 | [diff] [blame] | 35 | |
| 36 | f.exit: ; preds = %bb5.i |
| Devang Patel | c56423b | 2008-12-04 21:38:42 +0000 | [diff] [blame] | 37 | %2 = load i32* getelementptr ([2 x [2 x i32]]* @w, i32 0, i32 0, i32 0), align 4 ; <i32> [#uses=1] |
| 38 | %3 = icmp eq i32 %2, 1 ; <i1> [#uses=1] |
| 39 | br i1 %3, label %bb, label %bb3 |
| Devang Patel | 647a1e5 | 2008-10-10 22:02:57 +0000 | [diff] [blame] | 40 | |
| 41 | bb: ; preds = %f.exit |
| Devang Patel | c56423b | 2008-12-04 21:38:42 +0000 | [diff] [blame] | 42 | %4 = load i32* getelementptr ([2 x [2 x i32]]* @w, i32 0, i32 1, i32 1), align 4 ; <i32> [#uses=1] |
| 43 | %5 = icmp eq i32 %4, 1 ; <i1> [#uses=1] |
| 44 | br i1 %5, label %bb1, label %bb3 |
| Devang Patel | 647a1e5 | 2008-10-10 22:02:57 +0000 | [diff] [blame] | 45 | |
| 46 | bb1: ; preds = %bb |
| Devang Patel | c56423b | 2008-12-04 21:38:42 +0000 | [diff] [blame] | 47 | %6 = load i32* getelementptr ([2 x [2 x i32]]* @w, i32 0, i32 1, i32 0), align 4 ; <i32> [#uses=1] |
| 48 | %7 = icmp eq i32 %6, 0 ; <i1> [#uses=1] |
| 49 | br i1 %7, label %bb2, label %bb3 |
| Devang Patel | 647a1e5 | 2008-10-10 22:02:57 +0000 | [diff] [blame] | 50 | |
| 51 | bb2: ; preds = %bb1 |
| Devang Patel | c56423b | 2008-12-04 21:38:42 +0000 | [diff] [blame] | 52 | %8 = load i32* getelementptr ([2 x [2 x i32]]* @w, i32 0, i32 0, i32 1), align 4 ; <i32> [#uses=1] |
| 53 | %9 = icmp eq i32 %8, 0 ; <i1> [#uses=1] |
| 54 | br i1 %9, label %bb4, label %bb3 |
| Devang Patel | 647a1e5 | 2008-10-10 22:02:57 +0000 | [diff] [blame] | 55 | |
| 56 | bb3: ; preds = %bb2, %bb1, %bb, %f.exit |
| 57 | tail call void @abort() noreturn nounwind |
| 58 | unreachable |
| 59 | |
| 60 | bb4: ; preds = %bb2 |
| 61 | ret i32 0 |
| 62 | } |
| 63 | |
| 64 | declare void @abort() noreturn nounwind |
| 65 | |
| 66 | declare void @exit(i32) noreturn nounwind |