# RUN: llc -start-after=livedebugvalues --filetype=obj %s -o - \ # RUN: | llvm-dwarfdump -v -name=param - | FileCheck %s # # Generated with opt -sroa -inline, llc -stop-after=livedebugvalues, with some # metadata removed by hand. # # int glob; # __attribute__((always_inline)) # static void inline_me(int param) { # { # int local = param; # glob = local; # } # } # int fun(int number) { # inline_me(number); # if (number) # return 0; # return 1; # } # # The inlined parameter 'param' is available for the entirety of its enclosing # scope. We expect to see a single location entry despite the fact that the # final instruction in that scope belongs to a dominated scope. # # Except for 'param', all DILocalVariable metadata has been removed. # # Ignore first entry (abstract), we want to look at the concrete instance. # 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 {{.*}} "param" --- | target triple = "x86_64-unknown-linux-gnu" @glob = dso_local global i32 0, align 4, !dbg !0 declare void @llvm.dbg.declare(metadata, metadata, metadata) declare void @llvm.dbg.value(metadata, metadata, metadata) define dso_local i32 @fun(i32 %number) !dbg !11 { entry: call void @llvm.dbg.value(metadata i32 %number, metadata !17, metadata !DIExpression()), !dbg !24 store i32 %number, i32* @glob, align 4, !dbg !27 %tobool = icmp ne i32 %number, 0, !dbg !32 br i1 %tobool, label %return, label %if.end, !dbg !34 if.end: ; preds = %entry br label %return, !dbg !35 return: ; preds = %entry, %if.end %retval.0 = phi i32 [ 1, %if.end ], [ 0, %entry ], !dbg !16 ret i32 %retval.0, !dbg !36 } !llvm.dbg.cu = !{!2} !llvm.module.flags = !{!7, !8, !9} !llvm.ident = !{!10} !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) !1 = distinct !DIGlobalVariable(name: "glob", scope: !2, file: !3, line: 1, type: !6, 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, globals: !5, splitDebugInlining: false, nameTableKind: None) !3 = !DIFile(filename: "test.c", directory: "/") !4 = !{} !5 = !{!0} !6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) !7 = !{i32 7, !"Dwarf Version", i32 4} !8 = !{i32 2, !"Debug Info Version", i32 3} !9 = !{i32 1, !"wchar_size", i32 4} !10 = !{!"clang version 11.0.0"} !11 = distinct !DISubprogram(name: "fun", scope: !3, file: !3, line: 9, type: !12, scopeLine: 9, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !14) !12 = !DISubroutineType(types: !13) !13 = !{!6, !6} !14 = !{} !16 = !DILocation(line: 0, scope: !11) !17 = !DILocalVariable(name: "param", arg: 1, scope: !18, file: !3, line: 3, type: !6) !18 = distinct !DISubprogram(name: "inline_me", scope: !3, file: !3, line: 3, type: !19, scopeLine: 3, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !21) !19 = !DISubroutineType(types: !20) !20 = !{null, !6} !21 = !{!17} !23 = distinct !DILexicalBlock(scope: !18, file: !3, line: 4, column: 3) !24 = !DILocation(line: 0, scope: !18, inlinedAt: !25) !25 = distinct !DILocation(line: 10, column: 3, scope: !11) !26 = !DILocation(line: 0, scope: !23, inlinedAt: !25) !27 = !DILocation(line: 6, column: 10, scope: !23, inlinedAt: !25) !32 = !DILocation(line: 11, column: 7, scope: !33) !33 = distinct !DILexicalBlock(scope: !11, file: !3, line: 11, column: 7) !34 = !DILocation(line: 11, column: 7, scope: !11) !35 = !DILocation(line: 13, column: 3, scope: !11) !36 = !DILocation(line: 14, column: 1, scope: !11) ... --- name: fun body: | bb.0.entry: successors: %bb.2(0x50000000), %bb.1(0x30000000) liveins: $edi DBG_VALUE $edi, $noreg, !17, !DIExpression(), debug-location !24 MOV32mr $rip, 1, $noreg, @glob, $noreg, renamable $edi, debug-location !27 :: (store 4 into @glob) renamable $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags TEST32rr killed renamable $edi, renamable $edi, implicit-def $eflags, debug-location !32 JCC_1 %bb.1, 4, implicit $eflags, debug-location !34 bb.2.return: liveins: $eax RETQ $eax, debug-location !36 bb.1.if.end: renamable $eax = MOV32ri 1 RETQ $eax, debug-location !36 ...