| Fiona Glaser | b417d46 | 2016-01-29 22:35:36 +0000 | [diff] [blame] | 1 | ; RUN: opt -S -loop-simplifycfg < %s | FileCheck %s |
| Justin Bogner | da0fe18 | 2016-05-10 18:28:10 +0000 | [diff] [blame^] | 2 | ; RUN: opt -S -passes='require<domtree>,loop(simplify-cfg)' < %s | FileCheck %s |
| Fiona Glaser | b417d46 | 2016-01-29 22:35:36 +0000 | [diff] [blame] | 3 | |
| 4 | ; CHECK-LABEL: foo |
| 5 | ; CHECK: entry: |
| 6 | ; CHECK-NEXT: br label %[[LOOP:[a-z]+]] |
| 7 | ; CHECK: [[LOOP]]: |
| 8 | ; CHECK-NEXT: phi |
| 9 | ; CHECK-NOT: br label |
| 10 | ; CHECK: br i1 |
| 11 | define i32 @foo(i32* %P, i64* %Q) { |
| 12 | entry: |
| 13 | br label %outer |
| 14 | |
| 15 | outer: ; preds = %outer.latch2, %entry |
| 16 | %y.2 = phi i32 [ 0, %entry ], [ %y.inc2, %outer.latch2 ] |
| 17 | br label %inner |
| 18 | |
| 19 | inner: ; preds = %outer |
| 20 | store i32 0, i32* %P |
| 21 | store i32 1, i32* %P |
| 22 | store i32 2, i32* %P |
| 23 | %y.inc2 = add nsw i32 %y.2, 1 |
| 24 | %exitcond.outer = icmp eq i32 %y.inc2, 3 |
| 25 | store i32 %y.2, i32* %P |
| 26 | br i1 %exitcond.outer, label %exit, label %outer.latch2 |
| 27 | |
| 28 | outer.latch2: ; preds = %inner |
| 29 | %t = sext i32 %y.inc2 to i64 |
| 30 | store i64 %t, i64* %Q |
| 31 | br label %outer |
| 32 | |
| 33 | exit: ; preds = %inner |
| 34 | ret i32 0 |
| 35 | } |