1 ; RUN: llc -march=x86-64 -mtriple=x86_64-linux < %s | FileCheck %s
2 ; RUN: opt -strip-debug < %s | llc -march=x86-64 -mtriple=x86_64-linux | FileCheck %s
3 ; http://llvm.org/PR19051. Minor code-motion difference with -g.
4 ; Presence of debug info shouldn't affect the codegen. Make sure that
5 ; we generated the same code sequence with and without debug info.
7 ; CHECK: callq _Z3fooPcjPKc
8 ; CHECK: callq _Z3fooPcjPKc
9 ; CHECK: leaq (%rsp), %rdi
10 ; CHECK: movl $4, %esi
11 ; CHECK: testl {{%[a-z]+}}, {{%[a-z]+}}
14 ; Regenerate test with this command:
15 ; clang -emit-llvm -S -O2 -g
18 ; extern void foo(char *dst,unsigned siz,const char *src);
19 ; extern const char * i2str(int);
22 ; AAA3(const char *value) { foo(text,sizeof(text),value);}
23 ; void operator=(const char *value) { foo(text,sizeof(text),value);}
24 ; operator const char*() const { return text;}
28 ; void bar (int param1,int param2) {
29 ; const char * temp(0);
32 ; temp = i2str(param2);
44 %struct.AAA3 = type { [4 x i8] }
46 @.str = private unnamed_addr constant [1 x i8] zeroinitializer, align 1
47 @.str1 = private unnamed_addr constant [2 x i8] c"+\00", align 1
48 @.str2 = private unnamed_addr constant [2 x i8] c"-\00", align 1
50 ; Function Attrs: uwtable
51 define void @_Z3barii(i32 %param1, i32 %param2) #0 {
53 %var1 = alloca %struct.AAA3, align 1
54 %var2 = alloca %struct.AAA3, align 1
55 tail call void @llvm.dbg.value(metadata i32 %param1, i64 0, metadata !30, metadata !{!"0x102"}), !dbg !47
56 tail call void @llvm.dbg.value(metadata i32 %param2, i64 0, metadata !31, metadata !{!"0x102"}), !dbg !47
57 tail call void @llvm.dbg.value(metadata i8* null, i64 0, metadata !32, metadata !{!"0x102"}), !dbg !49
58 %tobool = icmp eq i32 %param2, 0, !dbg !50
59 br i1 %tobool, label %if.end, label %if.then, !dbg !50
61 if.then: ; preds = %entry
62 %call = tail call i8* @_Z5i2stri(i32 %param2), !dbg !52
63 tail call void @llvm.dbg.value(metadata i8* %call, i64 0, metadata !32, metadata !{!"0x102"}), !dbg !49
64 br label %if.end, !dbg !54
66 if.end: ; preds = %entry, %if.then
67 tail call void @llvm.dbg.value(metadata %struct.AAA3* %var1, i64 0, metadata !33, metadata !{!"0x102"}), !dbg !55
68 tail call void @llvm.dbg.value(metadata %struct.AAA3* %var1, i64 0, metadata !56, metadata !{!"0x102"}), !dbg !57
69 tail call void @llvm.dbg.value(metadata !58, i64 0, metadata !59, metadata !{!"0x102"}), !dbg !60
70 %arraydecay.i = getelementptr inbounds %struct.AAA3* %var1, i64 0, i32 0, i64 0, !dbg !61
71 call void @_Z3fooPcjPKc(i8* %arraydecay.i, i32 4, i8* getelementptr inbounds ([1 x i8]* @.str, i64 0, i64 0)), !dbg !61
72 call void @llvm.dbg.value(metadata %struct.AAA3* %var2, i64 0, metadata !34, metadata !{!"0x102"}), !dbg !63
73 call void @llvm.dbg.value(metadata %struct.AAA3* %var2, i64 0, metadata !64, metadata !{!"0x102"}), !dbg !65
74 call void @llvm.dbg.value(metadata !58, i64 0, metadata !66, metadata !{!"0x102"}), !dbg !67
75 %arraydecay.i5 = getelementptr inbounds %struct.AAA3* %var2, i64 0, i32 0, i64 0, !dbg !68
76 call void @_Z3fooPcjPKc(i8* %arraydecay.i5, i32 4, i8* getelementptr inbounds ([1 x i8]* @.str, i64 0, i64 0)), !dbg !68
77 %tobool1 = icmp eq i32 %param1, 0, !dbg !69
78 call void @llvm.dbg.value(metadata %struct.AAA3* %var2, i64 0, metadata !34, metadata !{!"0x102"}), !dbg !63
79 br i1 %tobool1, label %if.else, label %if.then2, !dbg !69
81 if.then2: ; preds = %if.end
82 call void @llvm.dbg.value(metadata %struct.AAA3* %var2, i64 0, metadata !71, metadata !{!"0x102"}), !dbg !73
83 call void @llvm.dbg.value(metadata !74, i64 0, metadata !75, metadata !{!"0x102"}), !dbg !76
84 call void @_Z3fooPcjPKc(i8* %arraydecay.i5, i32 4, i8* getelementptr inbounds ([2 x i8]* @.str1, i64 0, i64 0)), !dbg !76
85 br label %if.end3, !dbg !72
87 if.else: ; preds = %if.end
88 call void @llvm.dbg.value(metadata %struct.AAA3* %var2, i64 0, metadata !77, metadata !{!"0x102"}), !dbg !79
89 call void @llvm.dbg.value(metadata !80, i64 0, metadata !81, metadata !{!"0x102"}), !dbg !82
90 call void @_Z3fooPcjPKc(i8* %arraydecay.i5, i32 4, i8* getelementptr inbounds ([2 x i8]* @.str2, i64 0, i64 0)), !dbg !82
93 if.end3: ; preds = %if.else, %if.then2
94 call void @llvm.dbg.value(metadata %struct.AAA3* %var1, i64 0, metadata !33, metadata !{!"0x102"}), !dbg !55
95 call void @llvm.dbg.value(metadata %struct.AAA3* %var1, i64 0, metadata !83, metadata !{!"0x102"}), !dbg !85
96 call void @llvm.dbg.value(metadata !58, i64 0, metadata !86, metadata !{!"0x102"}), !dbg !87
97 call void @_Z3fooPcjPKc(i8* %arraydecay.i, i32 4, i8* getelementptr inbounds ([1 x i8]* @.str, i64 0, i64 0)), !dbg !87
101 declare i8* @_Z5i2stri(i32) #1
103 declare void @_Z3fooPcjPKc(i8*, i32, i8*) #1
105 ; Function Attrs: nounwind readnone
106 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2
108 attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
109 attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
110 attributes #2 = { nounwind readnone }
113 !llvm.module.flags = !{!44, !45}
116 !0 = !{!"0x11\004\00clang version 3.5.0 \001\00\000\00\001", !1, !2, !3, !23, !2, !2} ; [ DW_TAG_compile_unit ] [/tmp/dbginfo/dbg-changes-codegen-branch-folding.cpp] [DW_LANG_C_plus_plus]
117 !1 = !{!"dbg-changes-codegen-branch-folding.cpp", !"/tmp/dbginfo"}
120 !4 = !{!"0x13\00AAA3\004\0032\008\000\000\000", !1, null, null, !5, null, null, !"_ZTS4AAA3"} ; [ DW_TAG_structure_type ] [AAA3] [line 4, size 32, align 8, offset 0] [def] [from ]
121 !5 = !{!6, !11, !17, !18}
122 !6 = !{!"0xd\00text\008\0032\008\000\000", !1, !"_ZTS4AAA3", !7} ; [ DW_TAG_member ] [text] [line 8, size 32, align 8, offset 0] [from ]
123 !7 = !{!"0x1\00\000\0032\008\000\000", null, null, !8, !9, i32 0, null, null, null} ; [ DW_TAG_array_type ] [line 0, size 32, align 8, offset 0] [from char]
124 !8 = !{!"0x24\00char\000\008\008\000\000\006", null, null} ; [ DW_TAG_base_type ] [char] [line 0, size 8, align 8, offset 0, enc DW_ATE_signed_char]
126 !10 = !{!"0x21\000\004"} ; [ DW_TAG_subrange_type ] [0, 3]
127 !11 = !{!"0x2e\00AAA3\00AAA3\00\005\000\000\000\006\00256\001\005", !1, !"_ZTS4AAA3", !12, null, null, null, i32 0, null} ; [ DW_TAG_subprogram ] [line 5] [AAA3]
128 !12 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !13, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
129 !13 = !{null, !14, !15}
130 !14 = !{!"0xf\00\000\0064\0064\000\001088", null, null, !"_ZTS4AAA3"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from _ZTS4AAA3]
131 !15 = !{!"0xf\00\000\0064\0064\000\000", null, null, !16} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from ]
132 !16 = !{!"0x26\00\000\000\000\000\000", null, null, !8} ; [ DW_TAG_const_type ] [line 0, size 0, align 0, offset 0] [from char]
133 !17 = !{!"0x2e\00operator=\00operator=\00_ZN4AAA3aSEPKc\006\000\000\000\006\00256\001\006", !1, !"_ZTS4AAA3", !12, null, null, null, i32 0, null} ; [ DW_TAG_subprogram ] [line 6] [operator=]
134 !18 = !{!"0x2e\00operator const char *\00operator const char *\00_ZNK4AAA3cvPKcEv\007\000\000\000\006\00256\001\007", !1, !"_ZTS4AAA3", !19, null, null, null, i32 0, null} ; [ DW_TAG_subprogram ] [line 7] [operator const char *]
135 !19 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !20, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
137 !21 = !{!"0xf\00\000\0064\0064\000\001088", null, null, !22} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from ]
138 !22 = !{!"0x26\00\000\000\000\000\000", null, null, !"_ZTS4AAA3"} ; [ DW_TAG_const_type ] [line 0, size 0, align 0, offset 0] [from _ZTS4AAA3]
139 !23 = !{!24, !35, !40}
140 !24 = !{!"0x2e\00bar\00bar\00_Z3barii\0011\000\001\000\006\00256\001\0011", !1, !25, !26, null, void (i32, i32)* @_Z3barii, null, null, !29} ; [ DW_TAG_subprogram ] [line 11] [def] [bar]
141 !25 = !{!"0x29", !1} ; [ DW_TAG_file_type ] [/tmp/dbginfo/dbg-changes-codegen-branch-folding.cpp]
142 !26 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !27, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
143 !27 = !{null, !28, !28}
144 !28 = !{!"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
145 !29 = !{!30, !31, !32, !33, !34}
146 !30 = !{!"0x101\00param1\0016777227\000", !24, !25, !28} ; [ DW_TAG_arg_variable ] [param1] [line 11]
147 !31 = !{!"0x101\00param2\0033554443\000", !24, !25, !28} ; [ DW_TAG_arg_variable ] [param2] [line 11]
148 !32 = !{!"0x100\00temp\0012\000", !24, !25, !15} ; [ DW_TAG_auto_variable ] [temp] [line 12]
149 !33 = !{!"0x100\00var1\0017\000", !24, !25, !"_ZTS4AAA3"} ; [ DW_TAG_auto_variable ] [var1] [line 17]
150 !34 = !{!"0x100\00var2\0018\000", !24, !25, !"_ZTS4AAA3"} ; [ DW_TAG_auto_variable ] [var2] [line 18]
151 !35 = !{!"0x2e\00operator=\00operator=\00_ZN4AAA3aSEPKc\006\000\001\000\006\00256\001\006", !1, !"_ZTS4AAA3", !12, null, null, null, !17, !36} ; [ DW_TAG_subprogram ] [line 6] [def] [operator=]
153 !37 = !{!"0x101\00this\0016777216\001088", !35, null, !38} ; [ DW_TAG_arg_variable ] [this] [line 0]
154 !38 = !{!"0xf\00\000\0064\0064\000\000", null, null, !"_ZTS4AAA3"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from _ZTS4AAA3]
155 !39 = !{!"0x101\00value\0033554438\000", !35, !25, !15} ; [ DW_TAG_arg_variable ] [value] [line 6]
156 !40 = !{!"0x2e\00AAA3\00AAA3\00_ZN4AAA3C2EPKc\005\000\001\000\006\00256\001\005", !1, !"_ZTS4AAA3", !12, null, null, null, !11, !41} ; [ DW_TAG_subprogram ] [line 5] [def] [AAA3]
158 !42 = !{!"0x101\00this\0016777216\001088", !40, null, !38} ; [ DW_TAG_arg_variable ] [this] [line 0]
159 !43 = !{!"0x101\00value\0033554437\000", !40, !25, !15} ; [ DW_TAG_arg_variable ] [value] [line 5]
160 !44 = !{i32 2, !"Dwarf Version", i32 4}
161 !45 = !{i32 2, !"Debug Info Version", i32 2}
162 !46 = !{!"clang version 3.5.0 "}
163 !47 = !MDLocation(line: 11, scope: !24)
165 !49 = !MDLocation(line: 12, scope: !24)
166 !50 = !MDLocation(line: 14, scope: !51)
167 !51 = !{!"0xb\0014\000\000", !1, !24} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/dbg-changes-codegen-branch-folding.cpp]
168 !52 = !MDLocation(line: 15, scope: !53)
169 !53 = !{!"0xb\0014\000\000", !1, !51} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/dbg-changes-codegen-branch-folding.cpp]
170 !54 = !MDLocation(line: 16, scope: !53)
171 !55 = !MDLocation(line: 17, scope: !24)
172 !56 = !{!"0x101\00this\0016777216\001088", !40, null, !38, !55} ; [ DW_TAG_arg_variable ] [this] [line 0]
173 !57 = !MDLocation(line: 0, scope: !40, inlinedAt: !55)
174 !58 = !{i8* getelementptr inbounds ([1 x i8]* @.str, i64 0, i64 0)}
175 !59 = !{!"0x101\00value\0033554437\000", !40, !25, !15, !55} ; [ DW_TAG_arg_variable ] [value] [line 5]
176 !60 = !MDLocation(line: 5, scope: !40, inlinedAt: !55)
177 !61 = !MDLocation(line: 5, scope: !62, inlinedAt: !55)
178 !62 = !{!"0xb\005\000\000", !1, !40} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/dbg-changes-codegen-branch-folding.cpp]
179 !63 = !MDLocation(line: 18, scope: !24)
180 !64 = !{!"0x101\00this\0016777216\001088", !40, null, !38, !63} ; [ DW_TAG_arg_variable ] [this] [line 0]
181 !65 = !MDLocation(line: 0, scope: !40, inlinedAt: !63)
182 !66 = !{!"0x101\00value\0033554437\000", !40, !25, !15, !63} ; [ DW_TAG_arg_variable ] [value] [line 5]
183 !67 = !MDLocation(line: 5, scope: !40, inlinedAt: !63)
184 !68 = !MDLocation(line: 5, scope: !62, inlinedAt: !63)
185 !69 = !MDLocation(line: 20, scope: !70)
186 !70 = !{!"0xb\0020\000\000", !1, !24} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/dbg-changes-codegen-branch-folding.cpp]
187 !71 = !{!"0x101\00this\0016777216\001088", !35, null, !38, !72} ; [ DW_TAG_arg_variable ] [this] [line 0]
188 !72 = !MDLocation(line: 21, scope: !70)
189 !73 = !MDLocation(line: 0, scope: !35, inlinedAt: !72)
190 !74 = !{i8* getelementptr inbounds ([2 x i8]* @.str1, i64 0, i64 0)}
191 !75 = !{!"0x101\00value\0033554438\000", !35, !25, !15, !72} ; [ DW_TAG_arg_variable ] [value] [line 6]
192 !76 = !MDLocation(line: 6, scope: !35, inlinedAt: !72)
193 !77 = !{!"0x101\00this\0016777216\001088", !35, null, !38, !78} ; [ DW_TAG_arg_variable ] [this] [line 0]
194 !78 = !MDLocation(line: 23, scope: !70)
195 !79 = !MDLocation(line: 0, scope: !35, inlinedAt: !78)
196 !80 = !{i8* getelementptr inbounds ([2 x i8]* @.str2, i64 0, i64 0)}
197 !81 = !{!"0x101\00value\0033554438\000", !35, !25, !15, !78} ; [ DW_TAG_arg_variable ] [value] [line 6]
198 !82 = !MDLocation(line: 6, scope: !35, inlinedAt: !78)
199 !83 = !{!"0x101\00this\0016777216\001088", !35, null, !38, !84} ; [ DW_TAG_arg_variable ] [this] [line 0]
200 !84 = !MDLocation(line: 24, scope: !24)
201 !85 = !MDLocation(line: 0, scope: !35, inlinedAt: !84)
202 !86 = !{!"0x101\00value\0033554438\000", !35, !25, !15, !84} ; [ DW_TAG_arg_variable ] [value] [line 6]
203 !87 = !MDLocation(line: 6, scope: !35, inlinedAt: !84)
204 !88 = !MDLocation(line: 25, scope: !24)