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. 6; 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]+}} 12; CHECK: je .LBB0_4 13 14; Regenerate test with this command: 15; clang -emit-llvm -S -O2 -g 16; from this source: 17; 18; extern void foo(char *dst,unsigned siz,const char *src); 19; extern const char * i2str(int); 20; 21; struct AAA3 { 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;} 25; char text[4]; 26; }; 27; 28; void bar (int param1,int param2) { 29; const char * temp(0); 30; 31; if (param2) { 32; temp = i2str(param2); 33; } 34; AAA3 var1(""); 35; AAA3 var2(""); 36; 37; if (param1) 38; var2 = "+"; 39; else 40; var2 = "-"; 41; var1 = ""; 42; } 43 44%struct.AAA3 = type { [4 x i8] } 45 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 49 50; Function Attrs: uwtable 51define void @_Z3barii(i32 %param1, i32 %param2) #0 { 52entry: 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), !dbg !47 56 tail call void @llvm.dbg.value(metadata !{i32 %param2}, i64 0, metadata !31), !dbg !47 57 tail call void @llvm.dbg.value(metadata !48, i64 0, metadata !32), !dbg !49 58 %tobool = icmp eq i32 %param2, 0, !dbg !50 59 br i1 %tobool, label %if.end, label %if.then, !dbg !50 60 61if.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), !dbg !49 64 br label %if.end, !dbg !54 65 66if.end: ; preds = %entry, %if.then 67 tail call void @llvm.dbg.value(metadata !{%struct.AAA3* %var1}, i64 0, metadata !33), !dbg !55 68 tail call void @llvm.dbg.value(metadata !{%struct.AAA3* %var1}, i64 0, metadata !56), !dbg !57 69 tail call void @llvm.dbg.value(metadata !58, i64 0, metadata !59), !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), !dbg !63 73 call void @llvm.dbg.value(metadata !{%struct.AAA3* %var2}, i64 0, metadata !64), !dbg !65 74 call void @llvm.dbg.value(metadata !58, i64 0, metadata !66), !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), !dbg !63 79 br i1 %tobool1, label %if.else, label %if.then2, !dbg !69 80 81if.then2: ; preds = %if.end 82 call void @llvm.dbg.value(metadata !{%struct.AAA3* %var2}, i64 0, metadata !71), !dbg !73 83 call void @llvm.dbg.value(metadata !74, i64 0, metadata !75), !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 86 87if.else: ; preds = %if.end 88 call void @llvm.dbg.value(metadata !{%struct.AAA3* %var2}, i64 0, metadata !77), !dbg !79 89 call void @llvm.dbg.value(metadata !80, i64 0, metadata !81), !dbg !82 90 call void @_Z3fooPcjPKc(i8* %arraydecay.i5, i32 4, i8* getelementptr inbounds ([2 x i8]* @.str2, i64 0, i64 0)), !dbg !82 91 br label %if.end3 92 93if.end3: ; preds = %if.else, %if.then2 94 call void @llvm.dbg.value(metadata !{%struct.AAA3* %var1}, i64 0, metadata !33), !dbg !55 95 call void @llvm.dbg.value(metadata !{%struct.AAA3* %var1}, i64 0, metadata !83), !dbg !85 96 call void @llvm.dbg.value(metadata !58, i64 0, metadata !86), !dbg !87 97 call void @_Z3fooPcjPKc(i8* %arraydecay.i, i32 4, i8* getelementptr inbounds ([1 x i8]* @.str, i64 0, i64 0)), !dbg !87 98 ret void, !dbg !88 99} 100 101declare i8* @_Z5i2stri(i32) #1 102 103declare void @_Z3fooPcjPKc(i8*, i32, i8*) #1 104 105; Function Attrs: nounwind readnone 106declare void @llvm.dbg.value(metadata, i64, metadata) #2 107 108attributes #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" } 109attributes #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" } 110attributes #2 = { nounwind readnone } 111 112!llvm.dbg.cu = !{!0} 113!llvm.module.flags = !{!44, !45} 114!llvm.ident = !{!46} 115 116!0 = metadata !{i32 786449, metadata !1, i32 4, metadata !"clang version 3.5.0 ", i1 true, metadata !"", i32 0, metadata !2, metadata !3, metadata !23, metadata !2, metadata !2, metadata !"", i32 1} ; [ DW_TAG_compile_unit ] [/tmp/dbginfo/dbg-changes-codegen-branch-folding.cpp] [DW_LANG_C_plus_plus] 117!1 = metadata !{metadata !"dbg-changes-codegen-branch-folding.cpp", metadata !"/tmp/dbginfo"} 118!2 = metadata !{} 119!3 = metadata !{metadata !4} 120!4 = metadata !{i32 786451, metadata !1, null, metadata !"AAA3", i32 4, i64 32, i64 8, i32 0, i32 0, null, metadata !5, i32 0, null, null, metadata !"_ZTS4AAA3"} ; [ DW_TAG_structure_type ] [AAA3] [line 4, size 32, align 8, offset 0] [def] [from ] 121!5 = metadata !{metadata !6, metadata !11, metadata !17, metadata !18} 122!6 = metadata !{i32 786445, metadata !1, metadata !"_ZTS4AAA3", metadata !"text", i32 8, i64 32, i64 8, i64 0, i32 0, metadata !7} ; [ DW_TAG_member ] [text] [line 8, size 32, align 8, offset 0] [from ] 123!7 = metadata !{i32 786433, null, null, metadata !"", i32 0, i64 32, i64 8, i32 0, i32 0, metadata !8, metadata !9, i32 0, null, null, null} ; [ DW_TAG_array_type ] [line 0, size 32, align 8, offset 0] [from char] 124!8 = metadata !{i32 786468, null, null, metadata !"char", i32 0, i64 8, i64 8, i64 0, i32 0, i32 6} ; [ DW_TAG_base_type ] [char] [line 0, size 8, align 8, offset 0, enc DW_ATE_signed_char] 125!9 = metadata !{metadata !10} 126!10 = metadata !{i32 786465, i64 0, i64 4} ; [ DW_TAG_subrange_type ] [0, 3] 127!11 = metadata !{i32 786478, metadata !1, metadata !"_ZTS4AAA3", metadata !"AAA3", metadata !"AAA3", metadata !"", i32 5, metadata !12, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 true, null, null, i32 0, null, i32 5} ; [ DW_TAG_subprogram ] [line 5] [AAA3] 128!12 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !13, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 129!13 = metadata !{null, metadata !14, metadata !15} 130!14 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !"_ZTS4AAA3"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from _ZTS4AAA3] 131!15 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !16} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from ] 132!16 = metadata !{i32 786470, null, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, metadata !8} ; [ DW_TAG_const_type ] [line 0, size 0, align 0, offset 0] [from char] 133!17 = metadata !{i32 786478, metadata !1, metadata !"_ZTS4AAA3", metadata !"operator=", metadata !"operator=", metadata !"_ZN4AAA3aSEPKc", i32 6, metadata !12, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 true, null, null, i32 0, null, i32 6} ; [ DW_TAG_subprogram ] [line 6] [operator=] 134!18 = metadata !{i32 786478, metadata !1, metadata !"_ZTS4AAA3", metadata !"operator const char *", metadata !"operator const char *", metadata !"_ZNK4AAA3cvPKcEv", i32 7, metadata !19, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 true, null, null, i32 0, null, i32 7} ; [ DW_TAG_subprogram ] [line 7] [operator const char *] 135!19 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !20, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 136!20 = metadata !{metadata !15, metadata !21} 137!21 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !22} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from ] 138!22 = metadata !{i32 786470, null, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, metadata !"_ZTS4AAA3"} ; [ DW_TAG_const_type ] [line 0, size 0, align 0, offset 0] [from _ZTS4AAA3] 139!23 = metadata !{metadata !24, metadata !35, metadata !40} 140!24 = metadata !{i32 786478, metadata !1, metadata !25, metadata !"bar", metadata !"bar", metadata !"_Z3barii", i32 11, metadata !26, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, void (i32, i32)* @_Z3barii, null, null, metadata !29, i32 11} ; [ DW_TAG_subprogram ] [line 11] [def] [bar] 141!25 = metadata !{i32 786473, metadata !1} ; [ DW_TAG_file_type ] [/tmp/dbginfo/dbg-changes-codegen-branch-folding.cpp] 142!26 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !27, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 143!27 = metadata !{null, metadata !28, metadata !28} 144!28 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed] 145!29 = metadata !{metadata !30, metadata !31, metadata !32, metadata !33, metadata !34} 146!30 = metadata !{i32 786689, metadata !24, metadata !"param1", metadata !25, i32 16777227, metadata !28, i32 0, i32 0} ; [ DW_TAG_arg_variable ] [param1] [line 11] 147!31 = metadata !{i32 786689, metadata !24, metadata !"param2", metadata !25, i32 33554443, metadata !28, i32 0, i32 0} ; [ DW_TAG_arg_variable ] [param2] [line 11] 148!32 = metadata !{i32 786688, metadata !24, metadata !"temp", metadata !25, i32 12, metadata !15, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [temp] [line 12] 149!33 = metadata !{i32 786688, metadata !24, metadata !"var1", metadata !25, i32 17, metadata !"_ZTS4AAA3", i32 0, i32 0} ; [ DW_TAG_auto_variable ] [var1] [line 17] 150!34 = metadata !{i32 786688, metadata !24, metadata !"var2", metadata !25, i32 18, metadata !"_ZTS4AAA3", i32 0, i32 0} ; [ DW_TAG_auto_variable ] [var2] [line 18] 151!35 = metadata !{i32 786478, metadata !1, metadata !"_ZTS4AAA3", metadata !"operator=", metadata !"operator=", metadata !"_ZN4AAA3aSEPKc", i32 6, metadata !12, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, null, null, metadata !17, metadata !36, i32 6} ; [ DW_TAG_subprogram ] [line 6] [def] [operator=] 152!36 = metadata !{metadata !37, metadata !39} 153!37 = metadata !{i32 786689, metadata !35, metadata !"this", null, i32 16777216, metadata !38, i32 1088, i32 0} ; [ DW_TAG_arg_variable ] [this] [line 0] 154!38 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !"_ZTS4AAA3"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from _ZTS4AAA3] 155!39 = metadata !{i32 786689, metadata !35, metadata !"value", metadata !25, i32 33554438, metadata !15, i32 0, i32 0} ; [ DW_TAG_arg_variable ] [value] [line 6] 156!40 = metadata !{i32 786478, metadata !1, metadata !"_ZTS4AAA3", metadata !"AAA3", metadata !"AAA3", metadata !"_ZN4AAA3C2EPKc", i32 5, metadata !12, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, null, null, metadata !11, metadata !41, i32 5} ; [ DW_TAG_subprogram ] [line 5] [def] [AAA3] 157!41 = metadata !{metadata !42, metadata !43} 158!42 = metadata !{i32 786689, metadata !40, metadata !"this", null, i32 16777216, metadata !38, i32 1088, i32 0} ; [ DW_TAG_arg_variable ] [this] [line 0] 159!43 = metadata !{i32 786689, metadata !40, metadata !"value", metadata !25, i32 33554437, metadata !15, i32 0, i32 0} ; [ DW_TAG_arg_variable ] [value] [line 5] 160!44 = metadata !{i32 2, metadata !"Dwarf Version", i32 4} 161!45 = metadata !{i32 2, metadata !"Debug Info Version", i32 1} 162!46 = metadata !{metadata !"clang version 3.5.0 "} 163!47 = metadata !{i32 11, i32 0, metadata !24, null} 164!48 = metadata !{i8* null} 165!49 = metadata !{i32 12, i32 0, metadata !24, null} 166!50 = metadata !{i32 14, i32 0, metadata !51, null} 167!51 = metadata !{i32 786443, metadata !1, metadata !24, i32 14, i32 0, i32 0, i32 0} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/dbg-changes-codegen-branch-folding.cpp] 168!52 = metadata !{i32 15, i32 0, metadata !53, null} 169!53 = metadata !{i32 786443, metadata !1, metadata !51, i32 14, i32 0, i32 0, i32 1} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/dbg-changes-codegen-branch-folding.cpp] 170!54 = metadata !{i32 16, i32 0, metadata !53, null} 171!55 = metadata !{i32 17, i32 0, metadata !24, null} 172!56 = metadata !{i32 786689, metadata !40, metadata !"this", null, i32 16777216, metadata !38, i32 1088, metadata !55} ; [ DW_TAG_arg_variable ] [this] [line 0] 173!57 = metadata !{i32 0, i32 0, metadata !40, metadata !55} 174!58 = metadata !{i8* getelementptr inbounds ([1 x i8]* @.str, i64 0, i64 0)} 175!59 = metadata !{i32 786689, metadata !40, metadata !"value", metadata !25, i32 33554437, metadata !15, i32 0, metadata !55} ; [ DW_TAG_arg_variable ] [value] [line 5] 176!60 = metadata !{i32 5, i32 0, metadata !40, metadata !55} 177!61 = metadata !{i32 5, i32 0, metadata !62, metadata !55} 178!62 = metadata !{i32 786443, metadata !1, metadata !40, i32 5, i32 0, i32 0, i32 3} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/dbg-changes-codegen-branch-folding.cpp] 179!63 = metadata !{i32 18, i32 0, metadata !24, null} 180!64 = metadata !{i32 786689, metadata !40, metadata !"this", null, i32 16777216, metadata !38, i32 1088, metadata !63} ; [ DW_TAG_arg_variable ] [this] [line 0] 181!65 = metadata !{i32 0, i32 0, metadata !40, metadata !63} 182!66 = metadata !{i32 786689, metadata !40, metadata !"value", metadata !25, i32 33554437, metadata !15, i32 0, metadata !63} ; [ DW_TAG_arg_variable ] [value] [line 5] 183!67 = metadata !{i32 5, i32 0, metadata !40, metadata !63} 184!68 = metadata !{i32 5, i32 0, metadata !62, metadata !63} 185!69 = metadata !{i32 20, i32 0, metadata !70, null} 186!70 = metadata !{i32 786443, metadata !1, metadata !24, i32 20, i32 0, i32 0, i32 2} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/dbg-changes-codegen-branch-folding.cpp] 187!71 = metadata !{i32 786689, metadata !35, metadata !"this", null, i32 16777216, metadata !38, i32 1088, metadata !72} ; [ DW_TAG_arg_variable ] [this] [line 0] 188!72 = metadata !{i32 21, i32 0, metadata !70, null} 189!73 = metadata !{i32 0, i32 0, metadata !35, metadata !72} 190!74 = metadata !{i8* getelementptr inbounds ([2 x i8]* @.str1, i64 0, i64 0)} 191!75 = metadata !{i32 786689, metadata !35, metadata !"value", metadata !25, i32 33554438, metadata !15, i32 0, metadata !72} ; [ DW_TAG_arg_variable ] [value] [line 6] 192!76 = metadata !{i32 6, i32 0, metadata !35, metadata !72} 193!77 = metadata !{i32 786689, metadata !35, metadata !"this", null, i32 16777216, metadata !38, i32 1088, metadata !78} ; [ DW_TAG_arg_variable ] [this] [line 0] 194!78 = metadata !{i32 23, i32 0, metadata !70, null} 195!79 = metadata !{i32 0, i32 0, metadata !35, metadata !78} 196!80 = metadata !{i8* getelementptr inbounds ([2 x i8]* @.str2, i64 0, i64 0)} 197!81 = metadata !{i32 786689, metadata !35, metadata !"value", metadata !25, i32 33554438, metadata !15, i32 0, metadata !78} ; [ DW_TAG_arg_variable ] [value] [line 6] 198!82 = metadata !{i32 6, i32 0, metadata !35, metadata !78} 199!83 = metadata !{i32 786689, metadata !35, metadata !"this", null, i32 16777216, metadata !38, i32 1088, metadata !84} ; [ DW_TAG_arg_variable ] [this] [line 0] 200!84 = metadata !{i32 24, i32 0, metadata !24, null} 201!85 = metadata !{i32 0, i32 0, metadata !35, metadata !84} 202!86 = metadata !{i32 786689, metadata !35, metadata !"value", metadata !25, i32 33554438, metadata !15, i32 0, metadata !84} ; [ DW_TAG_arg_variable ] [value] [line 6] 203!87 = metadata !{i32 6, i32 0, metadata !35, metadata !84} 204!88 = metadata !{i32 25, i32 0, metadata !24, null} 205