blob: 0626ea178e5c47ab19a0d70655061bf96d71b8f6 [file] [log] [blame]
Michael Gottesmanccc93e72013-04-09 05:18:53 +00001; RUN: opt < %s -simplifycfg -S | FileCheck %s
Devang Patel086b2122009-02-05 00:30:42 +00002
Michael Gottesmanccc93e72013-04-09 05:18:53 +00003; CHECK-NOT: switch
Devang Patel086b2122009-02-05 00:30:42 +00004 %llvm.dbg.anchor.type = type { i32, i32 }
5 %llvm.dbg.compile_unit.type = type { i32, { }*, i32, i8*, i8*, i8*, i1, i1, i8* }
6
Dan Gohmanfb419362010-01-05 17:55:26 +00007@llvm.dbg.compile_units = linkonce constant %llvm.dbg.anchor.type { i32 458752, i32 17 }, section "llvm.metadata"
Devang Patel086b2122009-02-05 00:30:42 +00008
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 Blaikief72d05b2015-03-13 18:20:45 +000012@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 Patel086b2122009-02-05 00:30:42 +000013
14declare void @llvm.dbg.stoppoint(i32, i32, { }*) nounwind
15
16; Test folding all to same dest
17define i32 @test3(i1 %C) {
18 br i1 %C, label %Start, label %TheDest
19Start: ; preds = %0
20call 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 ]
27TheDest: ; preds = %Start, %Start, %Start, %Start, %Start, %0
28 ret i32 1234
29}
30
31; Test folding switch -> branch
32define i32 @test4(i32 %C) {
33 switch i32 %C, label %L1 [
34 i32 0, label %L2
35 ]
36L1: ; preds = %0
37call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
38 ret i32 0
39L2: ; preds = %0
40call 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!
45define i32 @test5(i32 %C) {
46 switch i32 %C, label %L1 [
47 i32 0, label %L2
48 i32 123, label %L1
49 ]
50L1: ; preds = %0, %0
51call void @llvm.dbg.stoppoint(i32 5, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
52 ret i32 0
53L2: ; preds = %0
54call 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