| ; RUN: llc -march=x86-64 -mtriple=x86_64-linux < %s | FileCheck %s |
| ; RUN: opt -strip-debug < %s | llc -march=x86-64 -mtriple=x86_64-linux | FileCheck %s |
| ; http://llvm.org/PR19051. Minor code-motion difference with -g. |
| ; Presence of debug info shouldn't affect the codegen. Make sure that |
| ; we generated the same code sequence with and without debug info. |
| ; |
| ; CHECK: callq _Z3fooPcjPKc |
| ; CHECK: callq _Z3fooPcjPKc |
| ; CHECK: leaq (%rsp), %rdi |
| ; CHECK: movl $4, %esi |
| ; CHECK: testl {{%[a-z]+}}, {{%[a-z]+}} |
| ; CHECK: je .LBB0_4 |
| |
| ; Regenerate test with this command: |
| ; clang -emit-llvm -S -O2 -g |
| ; from this source: |
| ; |
| ; extern void foo(char *dst,unsigned siz,const char *src); |
| ; extern const char * i2str(int); |
| ; |
| ; struct AAA3 { |
| ; AAA3(const char *value) { foo(text,sizeof(text),value);} |
| ; void operator=(const char *value) { foo(text,sizeof(text),value);} |
| ; operator const char*() const { return text;} |
| ; char text[4]; |
| ; }; |
| ; |
| ; void bar (int param1,int param2) { |
| ; const char * temp(0); |
| ; |
| ; if (param2) { |
| ; temp = i2str(param2); |
| ; } |
| ; AAA3 var1(""); |
| ; AAA3 var2(""); |
| ; |
| ; if (param1) |
| ; var2 = "+"; |
| ; else |
| ; var2 = "-"; |
| ; var1 = ""; |
| ; } |
| |
| %struct.AAA3 = type { [4 x i8] } |
| |
| @.str = private unnamed_addr constant [1 x i8] zeroinitializer, align 1 |
| @.str1 = private unnamed_addr constant [2 x i8] c"+\00", align 1 |
| @.str2 = private unnamed_addr constant [2 x i8] c"-\00", align 1 |
| |
| ; Function Attrs: uwtable |
| define void @_Z3barii(i32 %param1, i32 %param2) #0 { |
| entry: |
| %var1 = alloca %struct.AAA3, align 1 |
| %var2 = alloca %struct.AAA3, align 1 |
| tail call void @llvm.dbg.value(metadata i32 %param1, i64 0, metadata !30, metadata !{!"0x102"}), !dbg !47 |
| tail call void @llvm.dbg.value(metadata i32 %param2, i64 0, metadata !31, metadata !{!"0x102"}), !dbg !47 |
| tail call void @llvm.dbg.value(metadata i8* null, i64 0, metadata !32, metadata !{!"0x102"}), !dbg !49 |
| %tobool = icmp eq i32 %param2, 0, !dbg !50 |
| br i1 %tobool, label %if.end, label %if.then, !dbg !50 |
| |
| if.then: ; preds = %entry |
| %call = tail call i8* @_Z5i2stri(i32 %param2), !dbg !52 |
| tail call void @llvm.dbg.value(metadata i8* %call, i64 0, metadata !32, metadata !{!"0x102"}), !dbg !49 |
| br label %if.end, !dbg !54 |
| |
| if.end: ; preds = %entry, %if.then |
| tail call void @llvm.dbg.value(metadata %struct.AAA3* %var1, i64 0, metadata !33, metadata !{!"0x102"}), !dbg !55 |
| tail call void @llvm.dbg.value(metadata %struct.AAA3* %var1, i64 0, metadata !56, metadata !{!"0x102"}), !dbg !57 |
| tail call void @llvm.dbg.value(metadata !58, i64 0, metadata !59, metadata !{!"0x102"}), !dbg !60 |
| %arraydecay.i = getelementptr inbounds %struct.AAA3* %var1, i64 0, i32 0, i64 0, !dbg !61 |
| call void @_Z3fooPcjPKc(i8* %arraydecay.i, i32 4, i8* getelementptr inbounds ([1 x i8]* @.str, i64 0, i64 0)), !dbg !61 |
| call void @llvm.dbg.value(metadata %struct.AAA3* %var2, i64 0, metadata !34, metadata !{!"0x102"}), !dbg !63 |
| call void @llvm.dbg.value(metadata %struct.AAA3* %var2, i64 0, metadata !64, metadata !{!"0x102"}), !dbg !65 |
| call void @llvm.dbg.value(metadata !58, i64 0, metadata !66, metadata !{!"0x102"}), !dbg !67 |
| %arraydecay.i5 = getelementptr inbounds %struct.AAA3* %var2, i64 0, i32 0, i64 0, !dbg !68 |
| call void @_Z3fooPcjPKc(i8* %arraydecay.i5, i32 4, i8* getelementptr inbounds ([1 x i8]* @.str, i64 0, i64 0)), !dbg !68 |
| %tobool1 = icmp eq i32 %param1, 0, !dbg !69 |
| call void @llvm.dbg.value(metadata %struct.AAA3* %var2, i64 0, metadata !34, metadata !{!"0x102"}), !dbg !63 |
| br i1 %tobool1, label %if.else, label %if.then2, !dbg !69 |
| |
| if.then2: ; preds = %if.end |
| call void @llvm.dbg.value(metadata %struct.AAA3* %var2, i64 0, metadata !71, metadata !{!"0x102"}), !dbg !73 |
| call void @llvm.dbg.value(metadata !74, i64 0, metadata !75, metadata !{!"0x102"}), !dbg !76 |
| call void @_Z3fooPcjPKc(i8* %arraydecay.i5, i32 4, i8* getelementptr inbounds ([2 x i8]* @.str1, i64 0, i64 0)), !dbg !76 |
| br label %if.end3, !dbg !72 |
| |
| if.else: ; preds = %if.end |
| call void @llvm.dbg.value(metadata %struct.AAA3* %var2, i64 0, metadata !77, metadata !{!"0x102"}), !dbg !79 |
| call void @llvm.dbg.value(metadata !80, i64 0, metadata !81, metadata !{!"0x102"}), !dbg !82 |
| call void @_Z3fooPcjPKc(i8* %arraydecay.i5, i32 4, i8* getelementptr inbounds ([2 x i8]* @.str2, i64 0, i64 0)), !dbg !82 |
| br label %if.end3 |
| |
| if.end3: ; preds = %if.else, %if.then2 |
| call void @llvm.dbg.value(metadata %struct.AAA3* %var1, i64 0, metadata !33, metadata !{!"0x102"}), !dbg !55 |
| call void @llvm.dbg.value(metadata %struct.AAA3* %var1, i64 0, metadata !83, metadata !{!"0x102"}), !dbg !85 |
| call void @llvm.dbg.value(metadata !58, i64 0, metadata !86, metadata !{!"0x102"}), !dbg !87 |
| call void @_Z3fooPcjPKc(i8* %arraydecay.i, i32 4, i8* getelementptr inbounds ([1 x i8]* @.str, i64 0, i64 0)), !dbg !87 |
| ret void, !dbg !88 |
| } |
| |
| declare i8* @_Z5i2stri(i32) #1 |
| |
| declare void @_Z3fooPcjPKc(i8*, i32, i8*) #1 |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2 |
| |
| 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" } |
| 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" } |
| attributes #2 = { nounwind readnone } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!44, !45} |
| !llvm.ident = !{!46} |
| |
| !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] |
| !1 = !{!"dbg-changes-codegen-branch-folding.cpp", !"/tmp/dbginfo"} |
| !2 = !{} |
| !3 = !{!4} |
| !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 ] |
| !5 = !{!6, !11, !17, !18} |
| !6 = !{!"0xd\00text\008\0032\008\000\000", !1, !"_ZTS4AAA3", !7} ; [ DW_TAG_member ] [text] [line 8, size 32, align 8, offset 0] [from ] |
| !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] |
| !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] |
| !9 = !{!10} |
| !10 = !{!"0x21\000\004"} ; [ DW_TAG_subrange_type ] [0, 3] |
| !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] |
| !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 ] |
| !13 = !{null, !14, !15} |
| !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] |
| !15 = !{!"0xf\00\000\0064\0064\000\000", null, null, !16} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from ] |
| !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] |
| !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=] |
| !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 *] |
| !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 ] |
| !20 = !{!15, !21} |
| !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 ] |
| !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] |
| !23 = !{!24, !35, !40} |
| !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] |
| !25 = !{!"0x29", !1} ; [ DW_TAG_file_type ] [/tmp/dbginfo/dbg-changes-codegen-branch-folding.cpp] |
| !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 ] |
| !27 = !{null, !28, !28} |
| !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] |
| !29 = !{!30, !31, !32, !33, !34} |
| !30 = !{!"0x101\00param1\0016777227\000", !24, !25, !28} ; [ DW_TAG_arg_variable ] [param1] [line 11] |
| !31 = !{!"0x101\00param2\0033554443\000", !24, !25, !28} ; [ DW_TAG_arg_variable ] [param2] [line 11] |
| !32 = !{!"0x100\00temp\0012\000", !24, !25, !15} ; [ DW_TAG_auto_variable ] [temp] [line 12] |
| !33 = !{!"0x100\00var1\0017\000", !24, !25, !"_ZTS4AAA3"} ; [ DW_TAG_auto_variable ] [var1] [line 17] |
| !34 = !{!"0x100\00var2\0018\000", !24, !25, !"_ZTS4AAA3"} ; [ DW_TAG_auto_variable ] [var2] [line 18] |
| !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=] |
| !36 = !{!37, !39} |
| !37 = !{!"0x101\00this\0016777216\001088", !35, null, !38} ; [ DW_TAG_arg_variable ] [this] [line 0] |
| !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] |
| !39 = !{!"0x101\00value\0033554438\000", !35, !25, !15} ; [ DW_TAG_arg_variable ] [value] [line 6] |
| !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] |
| !41 = !{!42, !43} |
| !42 = !{!"0x101\00this\0016777216\001088", !40, null, !38} ; [ DW_TAG_arg_variable ] [this] [line 0] |
| !43 = !{!"0x101\00value\0033554437\000", !40, !25, !15} ; [ DW_TAG_arg_variable ] [value] [line 5] |
| !44 = !{i32 2, !"Dwarf Version", i32 4} |
| !45 = !{i32 2, !"Debug Info Version", i32 2} |
| !46 = !{!"clang version 3.5.0 "} |
| !47 = !MDLocation(line: 11, scope: !24) |
| !48 = !{i8* null} |
| !49 = !MDLocation(line: 12, scope: !24) |
| !50 = !MDLocation(line: 14, scope: !51) |
| !51 = !{!"0xb\0014\000\000", !1, !24} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/dbg-changes-codegen-branch-folding.cpp] |
| !52 = !MDLocation(line: 15, scope: !53) |
| !53 = !{!"0xb\0014\000\000", !1, !51} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/dbg-changes-codegen-branch-folding.cpp] |
| !54 = !MDLocation(line: 16, scope: !53) |
| !55 = !MDLocation(line: 17, scope: !24) |
| !56 = !{!"0x101\00this\0016777216\001088", !40, null, !38, !55} ; [ DW_TAG_arg_variable ] [this] [line 0] |
| !57 = !MDLocation(line: 0, scope: !40, inlinedAt: !55) |
| !58 = !{i8* getelementptr inbounds ([1 x i8]* @.str, i64 0, i64 0)} |
| !59 = !{!"0x101\00value\0033554437\000", !40, !25, !15, !55} ; [ DW_TAG_arg_variable ] [value] [line 5] |
| !60 = !MDLocation(line: 5, scope: !40, inlinedAt: !55) |
| !61 = !MDLocation(line: 5, scope: !62, inlinedAt: !55) |
| !62 = !{!"0xb\005\000\000", !1, !40} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/dbg-changes-codegen-branch-folding.cpp] |
| !63 = !MDLocation(line: 18, scope: !24) |
| !64 = !{!"0x101\00this\0016777216\001088", !40, null, !38, !63} ; [ DW_TAG_arg_variable ] [this] [line 0] |
| !65 = !MDLocation(line: 0, scope: !40, inlinedAt: !63) |
| !66 = !{!"0x101\00value\0033554437\000", !40, !25, !15, !63} ; [ DW_TAG_arg_variable ] [value] [line 5] |
| !67 = !MDLocation(line: 5, scope: !40, inlinedAt: !63) |
| !68 = !MDLocation(line: 5, scope: !62, inlinedAt: !63) |
| !69 = !MDLocation(line: 20, scope: !70) |
| !70 = !{!"0xb\0020\000\000", !1, !24} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/dbg-changes-codegen-branch-folding.cpp] |
| !71 = !{!"0x101\00this\0016777216\001088", !35, null, !38, !72} ; [ DW_TAG_arg_variable ] [this] [line 0] |
| !72 = !MDLocation(line: 21, scope: !70) |
| !73 = !MDLocation(line: 0, scope: !35, inlinedAt: !72) |
| !74 = !{i8* getelementptr inbounds ([2 x i8]* @.str1, i64 0, i64 0)} |
| !75 = !{!"0x101\00value\0033554438\000", !35, !25, !15, !72} ; [ DW_TAG_arg_variable ] [value] [line 6] |
| !76 = !MDLocation(line: 6, scope: !35, inlinedAt: !72) |
| !77 = !{!"0x101\00this\0016777216\001088", !35, null, !38, !78} ; [ DW_TAG_arg_variable ] [this] [line 0] |
| !78 = !MDLocation(line: 23, scope: !70) |
| !79 = !MDLocation(line: 0, scope: !35, inlinedAt: !78) |
| !80 = !{i8* getelementptr inbounds ([2 x i8]* @.str2, i64 0, i64 0)} |
| !81 = !{!"0x101\00value\0033554438\000", !35, !25, !15, !78} ; [ DW_TAG_arg_variable ] [value] [line 6] |
| !82 = !MDLocation(line: 6, scope: !35, inlinedAt: !78) |
| !83 = !{!"0x101\00this\0016777216\001088", !35, null, !38, !84} ; [ DW_TAG_arg_variable ] [this] [line 0] |
| !84 = !MDLocation(line: 24, scope: !24) |
| !85 = !MDLocation(line: 0, scope: !35, inlinedAt: !84) |
| !86 = !{!"0x101\00value\0033554438\000", !35, !25, !15, !84} ; [ DW_TAG_arg_variable ] [value] [line 6] |
| !87 = !MDLocation(line: 6, scope: !35, inlinedAt: !84) |
| !88 = !MDLocation(line: 25, scope: !24) |