| Michael Gottesman | ccc93e7 | 2013-04-09 05:18:53 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -simplifycfg -S | FileCheck %s |
| Devang Patel | 086b212 | 2009-02-05 00:30:42 +0000 | [diff] [blame] | 2 | |
| Michael Gottesman | ccc93e7 | 2013-04-09 05:18:53 +0000 | [diff] [blame] | 3 | ; CHECK-NOT: switch |
| Devang Patel | 086b212 | 2009-02-05 00:30:42 +0000 | [diff] [blame] | 4 | %llvm.dbg.anchor.type = type { i32, i32 } |
| 5 | %llvm.dbg.compile_unit.type = type { i32, { }*, i32, i8*, i8*, i8*, i1, i1, i8* } |
| 6 | |
| Dan Gohman | fb41936 | 2010-01-05 17:55:26 +0000 | [diff] [blame] | 7 | @llvm.dbg.compile_units = linkonce constant %llvm.dbg.anchor.type { i32 458752, i32 17 }, section "llvm.metadata" |
| Devang Patel | 086b212 | 2009-02-05 00:30:42 +0000 | [diff] [blame] | 8 | |
| 9 | @.str = internal constant [4 x i8] c"a.c\00", section "llvm.metadata" ; <[4 x i8]*> [#uses=1] |
| 10 | @.str1 = internal constant [6 x i8] c"/tmp/\00", section "llvm.metadata" ; <[6 x i8]*> [#uses=1] |
| 11 | @.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] |
| David Blaikie | f72d05b | 2015-03-13 18:20:45 +0000 | [diff] [blame] | 12 | @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], [4 x i8]* @.str, i32 0, i32 0), i8* getelementptr ([6 x i8], [6 x i8]* @.str1, i32 0, i32 0), i8* getelementptr ([55 x i8], [55 x i8]* @.str2, i32 0, i32 0), i1 true, i1 false, i8* null }, section "llvm.metadata" ; <%llvm.dbg.compile_unit.type*> [#uses=1] |
| Devang Patel | 086b212 | 2009-02-05 00:30:42 +0000 | [diff] [blame] | 13 | |
| 14 | declare void @llvm.dbg.stoppoint(i32, i32, { }*) nounwind |
| 15 | |
| 16 | ; Test folding all to same dest |
| 17 | define i32 @test3(i1 %C) { |
| 18 | br i1 %C, label %Start, label %TheDest |
| 19 | Start: ; preds = %0 |
| 20 | call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*)) |
| 21 | switch i32 3, label %TheDest [ |
| 22 | i32 0, label %TheDest |
| 23 | i32 1, label %TheDest |
| 24 | i32 2, label %TheDest |
| 25 | i32 5, label %TheDest |
| 26 | ] |
| 27 | TheDest: ; preds = %Start, %Start, %Start, %Start, %Start, %0 |
| 28 | ret i32 1234 |
| 29 | } |
| 30 | |
| 31 | ; Test folding switch -> branch |
| 32 | define i32 @test4(i32 %C) { |
| 33 | switch i32 %C, label %L1 [ |
| 34 | i32 0, label %L2 |
| 35 | ] |
| 36 | L1: ; preds = %0 |
| 37 | call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*)) |
| 38 | ret i32 0 |
| 39 | L2: ; preds = %0 |
| 40 | call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*)) |
| 41 | ret i32 1 |
| 42 | } |
| 43 | |
| 44 | ; Can fold into a cond branch! |
| 45 | define i32 @test5(i32 %C) { |
| 46 | switch i32 %C, label %L1 [ |
| 47 | i32 0, label %L2 |
| 48 | i32 123, label %L1 |
| 49 | ] |
| 50 | L1: ; preds = %0, %0 |
| 51 | call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*)) |
| 52 | ret i32 0 |
| 53 | L2: ; preds = %0 |
| 54 | call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*)) |
| 55 | ret i32 1 |
| 56 | } |
| 57 | |