| Dan Gohman | 3c7d308 | 2009-09-11 18:01:28 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -simplifycfg -S | \ |
| Devang Patel | 7c7e647 | 2009-02-05 00:30:42 +0000 | [diff] [blame] | 2 | ; RUN: not grep switch |
| 3 | |
| 4 | |
| 5 | %llvm.dbg.anchor.type = type { i32, i32 } |
| 6 | %llvm.dbg.compile_unit.type = type { i32, { }*, i32, i8*, i8*, i8*, i1, i1, i8* } |
| 7 | |
| Dan Gohman | 81bc62c | 2010-01-05 17:55:26 +0000 | [diff] [blame] | 8 | @llvm.dbg.compile_units = linkonce constant %llvm.dbg.anchor.type { i32 458752, i32 17 }, section "llvm.metadata" |
| Devang Patel | 7c7e647 | 2009-02-05 00:30:42 +0000 | [diff] [blame] | 9 | |
| 10 | @.str = internal constant [4 x i8] c"a.c\00", section "llvm.metadata" ; <[4 x i8]*> [#uses=1] |
| 11 | @.str1 = internal constant [6 x i8] c"/tmp/\00", section "llvm.metadata" ; <[6 x i8]*> [#uses=1] |
| 12 | @.str2 = internal constant [55 x i8] c"4.2.1 (Based on Apple Inc. build 5636) (LLVM build 00)\00", section "llvm.metadata" ; <[55 x i8]*> [#uses=1] |
| 13 | @llvm.dbg.compile_unit = internal constant %llvm.dbg.compile_unit.type { i32 458769, { }* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.compile_units to { }*), i32 1, i8* getelementptr ([4 x i8]* @.str, i32 0, i32 0), i8* getelementptr ([6 x i8]* @.str1, i32 0, i32 0), i8* getelementptr ([55 x i8]* @.str2, i32 0, i32 0), i1 true, i1 false, i8* null }, section "llvm.metadata" ; <%llvm.dbg.compile_unit.type*> [#uses=1] |
| 14 | |
| 15 | declare void @llvm.dbg.stoppoint(i32, i32, { }*) nounwind |
| 16 | |
| 17 | ; Test folding all to same dest |
| 18 | define i32 @test3(i1 %C) { |
| 19 | br i1 %C, label %Start, label %TheDest |
| 20 | Start: ; preds = %0 |
| 21 | call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*)) |
| 22 | switch i32 3, label %TheDest [ |
| 23 | i32 0, label %TheDest |
| 24 | i32 1, label %TheDest |
| 25 | i32 2, label %TheDest |
| 26 | i32 5, label %TheDest |
| 27 | ] |
| 28 | TheDest: ; preds = %Start, %Start, %Start, %Start, %Start, %0 |
| 29 | ret i32 1234 |
| 30 | } |
| 31 | |
| 32 | ; Test folding switch -> branch |
| 33 | define i32 @test4(i32 %C) { |
| 34 | switch i32 %C, label %L1 [ |
| 35 | i32 0, label %L2 |
| 36 | ] |
| 37 | L1: ; preds = %0 |
| 38 | call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*)) |
| 39 | ret i32 0 |
| 40 | L2: ; preds = %0 |
| 41 | call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*)) |
| 42 | ret i32 1 |
| 43 | } |
| 44 | |
| 45 | ; Can fold into a cond branch! |
| 46 | define i32 @test5(i32 %C) { |
| 47 | switch i32 %C, label %L1 [ |
| 48 | i32 0, label %L2 |
| 49 | i32 123, label %L1 |
| 50 | ] |
| 51 | L1: ; preds = %0, %0 |
| 52 | call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*)) |
| 53 | ret i32 0 |
| 54 | L2: ; preds = %0 |
| 55 | call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*)) |
| 56 | ret i32 1 |
| 57 | } |
| 58 | |