# RUN: llc -start-after=livedebugvalues --filetype=obj %s -o - \ # RUN: | llvm-dwarfdump -v -name=parama - | FileCheck %s # # Generated with -O2, llc -stop-after=livedebugvalues, with IR modified from # this source: # # int globa, globb; # void ext(); # static void set(int parama, int paramb) { # globa = parama; # globb = paramb; # } # void funone(int one, int two) { # two = two + one; # // 'two = ...' sunk between the inlined assignments to globa and globa. # set(one, two); # if (two > 0) # return ext(); # } # void funtwo(int one, int two) { # two = one + two; # // 'two = ...' sunk between the inlined assignments to globa and globa, # // and rdi is clobbered by the sunk 'two = ...'. # set(one, two); # if (one < two) # return ext(); # } # # Check that the 'parama' is available for the entire inlined scope in funone, # and that it is unavailable in the second DW_AT_ranges segment of the inlined # scope in funtwo. In both cases the inlined scope 'set' is intrerrupted by an # instruction from the calling function. # # Except for 'parama', all DILocalVariable metadata has been removed. # # Ignore first entry (abstract), we want to look at the concrete instances. # CHECK: DW_TAG_formal_parameter [ # CHECK: DW_TAG_formal_parameter [ # CHECK-NEXT: DW_AT_location [DW_FORM_exprloc] (DW_OP_reg5 RDI) # CHECK-NEXT: DW_AT_abstract_origin {{.*}} "parama" # CHECK: DW_TAG_formal_parameter [ # CHECK-NEXT: DW_AT_location [DW_FORM_sec_offset] # CHECK-NEXT: [0x{{[0-9a-b]+}}, 0x{{[0-9a-b]+}}) # CHECK-NEXT: DW_AT_abstract_origin {{.*}} "parama" --- | target triple = "x86_64-unknown-linux-gnu" @globa = dso_local local_unnamed_addr global i32 0, align 4, !dbg !0 @globb = dso_local local_unnamed_addr global i32 0, align 4, !dbg !10 declare !dbg !6 dso_local void @ext(...) local_unnamed_addr declare void @llvm.dbg.value(metadata, metadata, metadata) define dso_local void @funone(i32 %one, i32 %two) local_unnamed_addr !dbg !17 { entry: call void @llvm.dbg.value(metadata i32 %one, metadata !20, metadata !DIExpression()), !dbg !23 store i32 %one, i32* @globa, align 4, !dbg !25 %add = add nsw i32 %two, %one, !dbg !30 store i32 %add, i32* @globb, align 4, !dbg !31 %cmp = icmp sgt i32 %add, 0, !dbg !32 br i1 %cmp, label %if.then, label %if.end, !dbg !34 if.then: ; preds = %entry tail call void (...) @ext(), !dbg !35 ret void, !dbg !36 if.end: ; preds = %entry ret void, !dbg !36 } define dso_local void @funtwo(i32 %one, i32 %two) local_unnamed_addr !dbg !37 { entry: call void @llvm.dbg.value(metadata i32 %one, metadata !20, metadata !DIExpression()), !dbg !41 store i32 %one, i32* @globa, align 4, !dbg !43 %add = add nsw i32 %two, %one, !dbg !44 store i32 %add, i32* @globb, align 4, !dbg !45 %cmp = icmp sgt i32 %two, 0, !dbg !46 br i1 %cmp, label %if.then, label %if.end, !dbg !48 if.then: ; preds = %entry tail call void (...) @ext(), !dbg !49 ret void, !dbg !50 if.end: ; preds = %entry ret void, !dbg !50 } !llvm.dbg.cu = !{!2} !llvm.module.flags = !{!13, !14, !15} !llvm.ident = !{!16} !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) !1 = distinct !DIGlobalVariable(name: "globa", scope: !2, file: !3, line: 16, type: !12, isLocal: false, isDefinition: true) !2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !5, globals: !9, splitDebugInlining: false, nameTableKind: None) !3 = !DIFile(filename: "test.c", directory: "/") !4 = !{} !5 = !{!6} !6 = !DISubprogram(name: "ext", scope: !3, file: !3, line: 17, type: !7, spFlags: DISPFlagOptimized, retainedNodes: !4) !7 = !DISubroutineType(types: !8) !8 = !{null, null} !9 = !{!0, !10} !10 = !DIGlobalVariableExpression(var: !11, expr: !DIExpression()) !11 = distinct !DIGlobalVariable(name: "globb", scope: !2, file: !3, line: 16, type: !12, isLocal: false, isDefinition: true) !12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) !13 = !{i32 7, !"Dwarf Version", i32 4} !14 = !{i32 2, !"Debug Info Version", i32 3} !15 = !{i32 1, !"wchar_size", i32 4} !16 = !{!"clang version 11.0.0"} !17 = distinct !DISubprogram(name: "funone", scope: !3, file: !3, line: 22, type: !18, scopeLine: 22, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !4) !18 = !DISubroutineType(types: !19) !19 = !{null, !12, !12} !20 = !DILocalVariable(name: "parama", arg: 1, scope: !21, file: !3, line: 18, type: !12) !21 = distinct !DISubprogram(name: "set", scope: !3, file: !3, line: 18, type: !18, scopeLine: 18, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !22) !22 = !{!20} !23 = !DILocation(line: 0, scope: !21, inlinedAt: !24) !24 = distinct !DILocation(line: 24, column: 3, scope: !17) !25 = !DILocation(line: 19, column: 9, scope: !21, inlinedAt: !24) !30 = !DILocation(line: 23, column: 13, scope: !17) !31 = !DILocation(line: 20, column: 9, scope: !21, inlinedAt: !24) !32 = !DILocation(line: 25, column: 11, scope: !33) !33 = distinct !DILexicalBlock(scope: !17, file: !3, line: 25, column: 7) !34 = !DILocation(line: 25, column: 7, scope: !17) !35 = !DILocation(line: 26, column: 12, scope: !33) !36 = !DILocation(line: 27, column: 1, scope: !17) !37 = distinct !DISubprogram(name: "funtwo", scope: !3, file: !3, line: 28, type: !18, scopeLine: 28, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !38) !38 = !{} !41 = !DILocation(line: 0, scope: !21, inlinedAt: !42) !42 = distinct !DILocation(line: 30, column: 3, scope: !37) !43 = !DILocation(line: 19, column: 9, scope: !21, inlinedAt: !42) !44 = !DILocation(line: 29, column: 13, scope: !37) !45 = !DILocation(line: 20, column: 9, scope: !21, inlinedAt: !42) !46 = !DILocation(line: 31, column: 11, scope: !47) !47 = distinct !DILexicalBlock(scope: !37, file: !3, line: 31, column: 7) !48 = !DILocation(line: 31, column: 7, scope: !37) !49 = !DILocation(line: 32, column: 12, scope: !47) !50 = !DILocation(line: 33, column: 1, scope: !37) ... --- name: funone body: | bb.0.entry: successors: %bb.2(0x50000000), %bb.1(0x30000000) liveins: $edi, $esi DBG_VALUE $edi, $noreg, !20, !DIExpression(), debug-location !23 MOV32mr $rip, 1, $noreg, @globa, $noreg, renamable $edi, debug-location !25 :: (store 4 into @globa) renamable $esi = ADD32rr killed renamable $esi, killed renamable $edi, implicit-def $eflags, debug-location !32 MOV32mr $rip, 1, $noreg, @globb, $noreg, killed renamable $esi, debug-location !31 :: (store 4 into @globb) JCC_1 %bb.1, 14, implicit $eflags, debug-location !34 bb.2.if.then: dead $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, implicit-def $al, debug-location !35 TAILJMPd64 @ext, csr_64, implicit $rsp, implicit $ssp, implicit $rsp, implicit $ssp, implicit killed $al, debug-location !35 bb.1.if.end: RETQ debug-location !36 ... --- name: funtwo body: | bb.0.entry: successors: %bb.2(0x50000000), %bb.1(0x30000000) liveins: $edi, $esi DBG_VALUE $edi, $noreg, !20, !DIExpression(), debug-location !41 MOV32mr $rip, 1, $noreg, @globa, $noreg, renamable $edi, debug-location !43 :: (store 4 into @globa) renamable $edi = nsw ADD32rr killed renamable $edi, renamable $esi, implicit-def dead $eflags, debug-location !44 MOV32mr $rip, 1, $noreg, @globb, $noreg, killed renamable $edi, debug-location !45 :: (store 4 into @globb) TEST32rr killed renamable $esi, renamable $esi, implicit-def $eflags, debug-location !46 JCC_1 %bb.1, 14, implicit $eflags, debug-location !48 bb.2.if.then: dead $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, implicit-def $al, debug-location !49 TAILJMPd64 @ext, csr_64, implicit $rsp, implicit $ssp, implicit $rsp, implicit $ssp, implicit killed $al, debug-location !49 bb.1.if.end: RETQ debug-location !50 ...