| Frits van Bommel | ad96455 | 2011-05-22 16:24:18 +0000 | [diff] [blame] | 1 | ; RUN: opt -S <%s -simplifycfg | FileCheck %s |
| 2 | |
| 3 | define void @test_br(i32 %x) { |
| 4 | entry: |
| Stephen Lin | c1c7a13 | 2013-07-14 01:42:54 +0000 | [diff] [blame] | 5 | ; CHECK-LABEL: @test_br( |
| Frits van Bommel | ad96455 | 2011-05-22 16:24:18 +0000 | [diff] [blame] | 6 | ; CHECK-NEXT: entry: |
| 7 | ; CHECK-NEXT: ret void |
| 8 | %cmp = icmp eq i32 %x, 10 |
| 9 | br i1 %cmp, label %if.then, label %if.then |
| 10 | |
| 11 | if.then: ; preds = %entry |
| 12 | br label %if.end |
| 13 | |
| 14 | if.end: ; preds = %if.else, %if.then |
| 15 | ret void |
| 16 | } |
| 17 | |
| 18 | define void @test_switch(i32 %x) nounwind { |
| 19 | entry: |
| Stephen Lin | c1c7a13 | 2013-07-14 01:42:54 +0000 | [diff] [blame] | 20 | ; CHECK-LABEL: @test_switch( |
| Frits van Bommel | ad96455 | 2011-05-22 16:24:18 +0000 | [diff] [blame] | 21 | ; CHECK-NEXT: entry: |
| 22 | ; CHECK-NEXT: ret void |
| 23 | %rem = srem i32 %x, 3 |
| 24 | switch i32 %rem, label %sw.bb [ |
| 25 | i32 1, label %sw.bb |
| 26 | i32 10, label %sw.bb |
| 27 | ] |
| 28 | |
| 29 | sw.bb: ; preds = %sw.default, %entry, %entry |
| 30 | br label %sw.epilog |
| 31 | |
| 32 | sw.epilog: ; preds = %sw.bb |
| 33 | ret void |
| 34 | } |
| 35 | |
| 36 | define void @test_indirectbr(i32 %x) { |
| 37 | entry: |
| Stephen Lin | c1c7a13 | 2013-07-14 01:42:54 +0000 | [diff] [blame] | 38 | ; CHECK-LABEL: @test_indirectbr( |
| Frits van Bommel | ad96455 | 2011-05-22 16:24:18 +0000 | [diff] [blame] | 39 | ; CHECK-NEXT: entry: |
| 40 | ; Ideally this should now check: |
| 41 | ; CHK-NEXT: ret void |
| 42 | ; But that doesn't happen yet. Instead: |
| 43 | ; CHECK-NEXT: br label %L1 |
| 44 | |
| 45 | %label = bitcast i8* blockaddress(@test_indirectbr, %L1) to i8* |
| 46 | indirectbr i8* %label, [label %L1, label %L2] |
| 47 | |
| 48 | L1: ; preds = %entry |
| 49 | ret void |
| 50 | L2: ; preds = %entry |
| 51 | ret void |
| 52 | } |