| Eric Christopher | cee313d | 2019-04-17 04:52:47 +0000 | [diff] [blame] | 1 | ; RUN: opt -simplifycfg -keep-loops=false -S < %s | FileCheck %s |
| 2 | ; RUN: opt -passes='simplify-cfg<no-keep-loops>' -S < %s | FileCheck %s |
| 3 | |
| 4 | define void @test1(i32 %n) #0 { |
| 5 | entry: |
| 6 | %n.addr = alloca i32, align 4 |
| 7 | %count = alloca i32, align 4 |
| 8 | store i32 %n, i32* %n.addr, align 4 |
| 9 | %0 = bitcast i32* %count to i8* |
| 10 | store i32 0, i32* %count, align 4 |
| 11 | br label %while.cond |
| 12 | |
| 13 | while.cond: ; preds = %if.end, %entry |
| 14 | %1 = load i32, i32* %count, align 4 |
| 15 | %2 = load i32, i32* %n.addr, align 4 |
| 16 | %cmp = icmp ule i32 %1, %2 |
| 17 | br i1 %cmp, label %while.body, label %while.end |
| 18 | |
| 19 | while.body: ; preds = %while.cond |
| 20 | %3 = load i32, i32* %count, align 4 |
| 21 | %rem = urem i32 %3, 2 |
| 22 | %cmp1 = icmp eq i32 %rem, 0 |
| 23 | br i1 %cmp1, label %if.then, label %if.else |
| 24 | |
| 25 | if.then: ; preds = %while.body |
| 26 | %4 = load i32, i32* %count, align 4 |
| 27 | %add = add i32 %4, 1 |
| 28 | store i32 %add, i32* %count, align 4 |
| 29 | br label %if.end |
| 30 | |
| 31 | ; CHECK: if.then: |
| 32 | ; CHECK: br label %while.cond, !llvm.loop !0 |
| 33 | |
| 34 | if.else: ; preds = %while.body |
| 35 | %5 = load i32, i32* %count, align 4 |
| 36 | %add2 = add i32 %5, 2 |
| 37 | store i32 %add2, i32* %count, align 4 |
| 38 | br label %if.end |
| 39 | |
| 40 | ; CHECK: if.else: |
| 41 | ; CHECK: br label %while.cond, !llvm.loop !0 |
| 42 | |
| 43 | if.end: ; preds = %if.else, %if.then |
| 44 | br label %while.cond, !llvm.loop !0 |
| 45 | |
| 46 | while.end: ; preds = %while.cond |
| 47 | %6 = bitcast i32* %count to i8* |
| 48 | ret void |
| 49 | } |
| 50 | |
| 51 | !0 = distinct !{!0, !1} |
| 52 | !1 = !{!"llvm.loop.distribute.enable", i1 true} |
| 53 | ; CHECK: !0 = distinct !{!0, !1} |
| 54 | ; CHECK: !1 = !{!"llvm.loop.distribute.enable", i1 true} |