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1# RUN: llc -start-after=livedebugvalues --filetype=obj %s -o - \2# RUN: | llvm-dwarfdump -v --name local - \3# RUN: | FileCheck %s4#5## Generated with opt -inline -mem2reg, llc -stop-after=livedebugvalues from:6## int glob;7## int ext1(int);8## int ext2(int);9##10## __attribute__((always_inline))11## static int inline_me() {12## int local = glob;13## int r = 0;14## if (local)15## r = ext1(local);16## else17## r = ext2(local);18## return r * local;19## }20##21## int fun(int p) {22## glob = p;23## glob = inline_me();24## return 0;25## }26##27## Check that the location for inlined variable 'local' (RBX), which spans28## multiple basic blocks, is given a single location.29#30# CHECK: DW_AT_location [DW_FORM_exprloc] (DW_OP_reg3 RBX)31# CHECK-NEXT: DW_AT_abstract_origin [DW_FORM_ref4] ({{.*}}"local")32 33--- |34 target triple = "x86_64-unknown-linux-gnu"35 36 @glob = dso_local global i32 0, align 4, !dbg !037 38 define dso_local i32 @_Z3funi(i32 %p) !dbg !11 {39 entry:40 call void @llvm.dbg.value(metadata i32 %p, metadata !15, metadata !DIExpression()), !dbg !1641 store i32 %p, ptr @glob, align 4, !dbg !1742 %0 = load i32, ptr @glob, align 4, !dbg !2243 call void @llvm.dbg.value(metadata i32 %0, metadata !27, metadata !DIExpression()), !dbg !3044 call void @llvm.dbg.value(metadata i32 0, metadata !28, metadata !DIExpression()), !dbg !3045 %tobool.i = icmp ne i32 %0, 0, !dbg !3146 br i1 %tobool.i, label %if.then.i, label %if.else.i, !dbg !3347 48 if.then.i: ; preds = %entry49 %call.i = call i32 @_Z4ext1i(i32 %0), !dbg !3450 call void @llvm.dbg.value(metadata i32 %call.i, metadata !28, metadata !DIExpression()), !dbg !3051 br label %_ZL9inline_mev.exit, !dbg !3552 53 if.else.i: ; preds = %entry54 %call1.i = call i32 @_Z4ext2i(i32 %0), !dbg !3655 call void @llvm.dbg.value(metadata i32 %call1.i, metadata !28, metadata !DIExpression()), !dbg !3056 br label %_ZL9inline_mev.exit57 58 _ZL9inline_mev.exit: ; preds = %if.else.i, %if.then.i59 %r.0.i = phi i32 [ %call.i, %if.then.i ], [ %call1.i, %if.else.i ], !dbg !3760 call void @llvm.dbg.value(metadata i32 %r.0.i, metadata !28, metadata !DIExpression()), !dbg !3061 %mul.i = mul nsw i32 %r.0.i, %0, !dbg !3862 store i32 %mul.i, ptr @glob, align 4, !dbg !3963 ret i32 0, !dbg !4064 }65 66 declare !dbg !41 dso_local i32 @_Z4ext1i(i32)67 declare !dbg !42 dso_local i32 @_Z4ext2i(i32)68 declare void @llvm.dbg.value(metadata, metadata, metadata)69 70 !llvm.dbg.cu = !{!2}71 !llvm.module.flags = !{!7, !8, !9}72 !llvm.ident = !{!10}73 74 !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())75 !1 = distinct !DIGlobalVariable(name: "glob", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)76 !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !3, producer: "clang version 12.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, splitDebugInlining: false, nameTableKind: None)77 !3 = !DIFile(filename: "test.cpp", directory: "/")78 !4 = !{}79 !5 = !{!0}80 !6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)81 !7 = !{i32 7, !"Dwarf Version", i32 4}82 !8 = !{i32 2, !"Debug Info Version", i32 3}83 !9 = !{i32 1, !"wchar_size", i32 4}84 !10 = !{!"clang version 12.0.0"}85 !11 = distinct !DISubprogram(name: "fun", linkageName: "_Z3funi", scope: !3, file: !3, line: 16, type: !12, scopeLine: 16, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !14)86 !12 = !DISubroutineType(types: !13)87 !13 = !{!6, !6}88 !14 = !{!15}89 !15 = !DILocalVariable(name: "p", arg: 1, scope: !11, file: !3, line: 16, type: !6)90 !16 = !DILocation(line: 0, scope: !11)91 !17 = !DILocation(line: 17, column: 8, scope: !11)92 !22 = !DILocation(line: 7, column: 15, scope: !23, inlinedAt: !29)93 !23 = distinct !DISubprogram(name: "inline_me", linkageName: "_ZL9inline_mev", scope: !3, file: !3, line: 6, type: !24, scopeLine: 6, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !26)94 !24 = !DISubroutineType(types: !25)95 !25 = !{!6}96 !26 = !{!27, !28}97 !27 = !DILocalVariable(name: "local", scope: !23, file: !3, line: 7, type: !6)98 !28 = !DILocalVariable(name: "r", scope: !23, file: !3, line: 8, type: !6)99 !29 = distinct !DILocation(line: 18, column: 10, scope: !11)100 !30 = !DILocation(line: 0, scope: !23, inlinedAt: !29)101 !31 = !DILocation(line: 9, column: 7, scope: !32, inlinedAt: !29)102 !32 = distinct !DILexicalBlock(scope: !23, file: !3, line: 9, column: 7)103 !33 = !DILocation(line: 9, column: 7, scope: !23, inlinedAt: !29)104 !34 = !DILocation(line: 10, column: 9, scope: !32, inlinedAt: !29)105 !35 = !DILocation(line: 10, column: 5, scope: !32, inlinedAt: !29)106 !36 = !DILocation(line: 12, column: 9, scope: !32, inlinedAt: !29)107 !37 = !DILocation(line: 0, scope: !32, inlinedAt: !29)108 !38 = !DILocation(line: 13, column: 12, scope: !23, inlinedAt: !29)109 !39 = !DILocation(line: 18, column: 8, scope: !11)110 !40 = !DILocation(line: 19, column: 3, scope: !11)111 !41 = !DISubprogram(name: "ext1", linkageName: "_Z4ext1i", scope: !3, file: !3, line: 2, type: !12, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !4)112 !42 = !DISubprogram(name: "ext2", linkageName: "_Z4ext2i", scope: !3, file: !3, line: 3, type: !12, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !4)113 114...115---116name: _Z3funi117body: |118 bb.0.entry:119 successors: %bb.1(0x50000000), %bb.2(0x30000000)120 liveins: $edi, $rbx121 122 DBG_VALUE $edi, $noreg, !15, !DIExpression(), debug-location !16123 frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp124 CFI_INSTRUCTION def_cfa_offset 16125 CFI_INSTRUCTION offset $rbx, -16126 $ebx = MOV32rr $edi127 DBG_VALUE $ebx, $noreg, !15, !DIExpression(), debug-location !16128 MOV32mr $rip, 1, $noreg, @glob, $noreg, $edi, debug-location !17 :: (store (s32) into @glob)129 DBG_VALUE $ebx, $noreg, !27, !DIExpression(), debug-location !30130 DBG_VALUE 0, $noreg, !28, !DIExpression(), debug-location !30131 TEST32rr $edi, $edi, implicit-def $eflags, debug-location !31132 JCC_1 %bb.2, 4, implicit killed $eflags, debug-location !33133 134 bb.1.if.then.i:135 successors: %bb.3(0x80000000)136 liveins: $ebx137 138 DBG_VALUE $ebx, $noreg, !27, !DIExpression(), debug-location !30139 DBG_VALUE $ebx, $noreg, !15, !DIExpression(), debug-location !16140 DBG_VALUE 0, $noreg, !28, !DIExpression(), debug-location !30141 $edi = MOV32rr $ebx, debug-location !34142 CALL64pcrel32 @_Z4ext1i, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !34143 DBG_VALUE $eax, $noreg, !28, !DIExpression(), debug-location !30144 JMP_1 %bb.3145 146 bb.2.if.else.i:147 successors: %bb.3(0x80000000)148 liveins: $ebx149 150 DBG_VALUE $ebx, $noreg, !27, !DIExpression(), debug-location !30151 DBG_VALUE $ebx, $noreg, !15, !DIExpression(), debug-location !16152 DBG_VALUE 0, $noreg, !28, !DIExpression(), debug-location !30153 $edi = MOV32rr $ebx, debug-location !36154 CALL64pcrel32 @_Z4ext2i, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !36155 DBG_VALUE $eax, $noreg, !28, !DIExpression(), debug-location !30156 157 bb.3._ZL9inline_mev.exit:158 liveins: $eax, $ebx159 160 DBG_VALUE $ebx, $noreg, !27, !DIExpression(), debug-location !30161 DBG_VALUE $ebx, $noreg, !15, !DIExpression(), debug-location !16162 DBG_VALUE $eax, $noreg, !28, !DIExpression(), debug-location !30163 DBG_VALUE $eax, $noreg, !28, !DIExpression(), debug-location !30164 renamable $eax = nsw IMUL32rr killed renamable $eax, killed renamable $ebx, implicit-def dead $eflags, debug-location !38165 MOV32mr $rip, 1, $noreg, @glob, $noreg, killed renamable $eax, debug-location !39 :: (store (s32) into @glob)166 $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, debug-location !40167 $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !40168 DBG_VALUE $edi, $noreg, !15, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !16169 CFI_INSTRUCTION def_cfa_offset 8, debug-location !40170 RET64 $eax, debug-location !40171 172...173