1# RUN: llc -start-after=livedebugvalues --filetype=obj %s -o - \ 2# RUN: | llvm-dwarfdump -v --name local - \ 3# RUN: | FileCheck %s 4# 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## else 17## 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 spans 28## 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 !0 37 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 !16 41 store i32 %p, ptr @glob, align 4, !dbg !17 42 %0 = load i32, ptr @glob, align 4, !dbg !22 43 call void @llvm.dbg.value(metadata i32 %0, metadata !27, metadata !DIExpression()), !dbg !30 44 call void @llvm.dbg.value(metadata i32 0, metadata !28, metadata !DIExpression()), !dbg !30 45 %tobool.i = icmp ne i32 %0, 0, !dbg !31 46 br i1 %tobool.i, label %if.then.i, label %if.else.i, !dbg !33 47 48 if.then.i: ; preds = %entry 49 %call.i = call i32 @_Z4ext1i(i32 %0), !dbg !34 50 call void @llvm.dbg.value(metadata i32 %call.i, metadata !28, metadata !DIExpression()), !dbg !30 51 br label %_ZL9inline_mev.exit, !dbg !35 52 53 if.else.i: ; preds = %entry 54 %call1.i = call i32 @_Z4ext2i(i32 %0), !dbg !36 55 call void @llvm.dbg.value(metadata i32 %call1.i, metadata !28, metadata !DIExpression()), !dbg !30 56 br label %_ZL9inline_mev.exit 57 58 _ZL9inline_mev.exit: ; preds = %if.else.i, %if.then.i 59 %r.0.i = phi i32 [ %call.i, %if.then.i ], [ %call1.i, %if.else.i ], !dbg !37 60 call void @llvm.dbg.value(metadata i32 %r.0.i, metadata !28, metadata !DIExpression()), !dbg !30 61 %mul.i = mul nsw i32 %r.0.i, %0, !dbg !38 62 store i32 %mul.i, ptr @glob, align 4, !dbg !39 63 ret i32 0, !dbg !40 64 } 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: _Z3funi 117body: | 118 bb.0.entry: 119 successors: %bb.1(0x50000000), %bb.2(0x30000000) 120 liveins: $edi, $rbx 121 122 DBG_VALUE $edi, $noreg, !15, !DIExpression(), debug-location !16 123 frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp 124 CFI_INSTRUCTION def_cfa_offset 16 125 CFI_INSTRUCTION offset $rbx, -16 126 $ebx = MOV32rr $edi 127 DBG_VALUE $ebx, $noreg, !15, !DIExpression(), debug-location !16 128 MOV32mr $rip, 1, $noreg, @glob, $noreg, $edi, debug-location !17 :: (store (s32) into @glob) 129 DBG_VALUE $ebx, $noreg, !27, !DIExpression(), debug-location !30 130 DBG_VALUE 0, $noreg, !28, !DIExpression(), debug-location !30 131 TEST32rr $edi, $edi, implicit-def $eflags, debug-location !31 132 JCC_1 %bb.2, 4, implicit killed $eflags, debug-location !33 133 134 bb.1.if.then.i: 135 successors: %bb.3(0x80000000) 136 liveins: $ebx 137 138 DBG_VALUE $ebx, $noreg, !27, !DIExpression(), debug-location !30 139 DBG_VALUE $ebx, $noreg, !15, !DIExpression(), debug-location !16 140 DBG_VALUE 0, $noreg, !28, !DIExpression(), debug-location !30 141 $edi = MOV32rr $ebx, debug-location !34 142 CALL64pcrel32 @_Z4ext1i, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !34 143 DBG_VALUE $eax, $noreg, !28, !DIExpression(), debug-location !30 144 JMP_1 %bb.3 145 146 bb.2.if.else.i: 147 successors: %bb.3(0x80000000) 148 liveins: $ebx 149 150 DBG_VALUE $ebx, $noreg, !27, !DIExpression(), debug-location !30 151 DBG_VALUE $ebx, $noreg, !15, !DIExpression(), debug-location !16 152 DBG_VALUE 0, $noreg, !28, !DIExpression(), debug-location !30 153 $edi = MOV32rr $ebx, debug-location !36 154 CALL64pcrel32 @_Z4ext2i, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !36 155 DBG_VALUE $eax, $noreg, !28, !DIExpression(), debug-location !30 156 157 bb.3._ZL9inline_mev.exit: 158 liveins: $eax, $ebx 159 160 DBG_VALUE $ebx, $noreg, !27, !DIExpression(), debug-location !30 161 DBG_VALUE $ebx, $noreg, !15, !DIExpression(), debug-location !16 162 DBG_VALUE $eax, $noreg, !28, !DIExpression(), debug-location !30 163 DBG_VALUE $eax, $noreg, !28, !DIExpression(), debug-location !30 164 renamable $eax = nsw IMUL32rr killed renamable $eax, killed renamable $ebx, implicit-def dead $eflags, debug-location !38 165 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 !40 167 $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !40 168 DBG_VALUE $edi, $noreg, !15, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !16 169 CFI_INSTRUCTION def_cfa_offset 8, debug-location !40 170 RET64 $eax, debug-location !40 171 172... 173