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1# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py2# RUN: llc -O0 -mtriple=x86_64-unknown-linux-gnu -start-before=regallocfast -stop-after=livedebugvalues -verify-machineinstrs -o - %s -experimental-debug-variable-locations=true | FileCheck %s3# DBG_VALUEs for %0 should be present in the use blocks4 5--- |6 define dso_local i32 @foo(i32 %a) #0 !dbg !6 {7 entry:8 %a.addr = alloca i32, align 49 %saved_stack = alloca ptr, align 810 %__vla_expr0 = alloca i64, align 811 %i = alloca i32, align 412 store i32 %a, ptr %a.addr, align 413 call void @llvm.dbg.declare(metadata ptr %a.addr, metadata !11, metadata !DIExpression()), !dbg !1214 %0 = load i32, ptr %a.addr, align 4, !dbg !1315 %1 = zext i32 %0 to i64, !dbg !1416 %2 = call ptr @llvm.stacksave(), !dbg !1417 store ptr %2, ptr %saved_stack, align 8, !dbg !1418 %vla = alloca i32, i64 %1, align 16, !dbg !1419 store i64 %1, ptr %__vla_expr0, align 8, !dbg !1420 call void @llvm.dbg.declare(metadata ptr %__vla_expr0, metadata !15, metadata !DIExpression()), !dbg !1721 call void @llvm.dbg.declare(metadata ptr %vla, metadata !18, metadata !DIExpression()), !dbg !2222 call void @llvm.dbg.declare(metadata ptr %i, metadata !23, metadata !DIExpression()), !dbg !2523 store i32 0, ptr %i, align 4, !dbg !2524 br label %for.cond, !dbg !2625 26 for.cond: ; preds = %for.inc, %entry27 %3 = load i32, ptr %i, align 4, !dbg !2728 %4 = load i32, ptr %a.addr, align 4, !dbg !2929 %cmp = icmp slt i32 %3, %4, !dbg !3030 br i1 %cmp, label %for.body, label %for.end, !dbg !3131 32 for.body: ; preds = %for.cond33 %5 = load i32, ptr %a.addr, align 4, !dbg !3234 %6 = load i32, ptr %i, align 4, !dbg !3335 %sub = sub nsw i32 %5, %6, !dbg !3436 %7 = load i32, ptr %i, align 4, !dbg !3537 %idxprom = sext i32 %7 to i64, !dbg !3638 %arrayidx = getelementptr inbounds i32, ptr %vla, i64 %idxprom, !dbg !3639 store i32 %sub, ptr %arrayidx, align 4, !dbg !3740 br label %for.inc, !dbg !3641 42 for.inc: ; preds = %for.body43 %8 = load i32, ptr %i, align 4, !dbg !3844 %inc = add nsw i32 %8, 1, !dbg !3845 store i32 %inc, ptr %i, align 4, !dbg !3846 br label %for.cond, !dbg !39, !llvm.loop !4047 48 for.end: ; preds = %for.cond49 %9 = load i32, ptr %a.addr, align 4, !dbg !4250 %sub1 = sub nsw i32 %9, 1, !dbg !4351 %idxprom2 = sext i32 %sub1 to i64, !dbg !4452 %arrayidx3 = getelementptr inbounds i32, ptr %vla, i64 %idxprom2, !dbg !4453 %10 = load i32, ptr %arrayidx3, align 4, !dbg !4454 %11 = load ptr, ptr %saved_stack, align 8, !dbg !4555 call void @llvm.stackrestore(ptr %11), !dbg !4556 ret i32 %10, !dbg !4557 }58 59 declare void @llvm.dbg.declare(metadata, metadata, metadata) #160 declare ptr @llvm.stacksave() #261 declare void @llvm.stackrestore(ptr) #262 63 attributes #0 = { noinline nounwind optnone uwtable }64 attributes #1 = { nounwind readnone speculatable willreturn }65 attributes #2 = { nounwind }66 67 !llvm.dbg.cu = !{!0}68 !llvm.module.flags = !{!3, !4, !5}69 70 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 12.0.0 (git@github.com:llvm/llvm-project.git 954995d0a45729c7935b82258c166524ee87ad3f)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)71 !1 = !DIFile(filename: "/home/matt/src/llvm-project/lldb/test/API/lang/c/vla/main.c", directory: "/home/matt/src/llvm-project/build_debug_lldbg")72 !2 = !{}73 !3 = !{i32 7, !"Dwarf Version", i32 4}74 !4 = !{i32 2, !"Debug Info Version", i32 3}75 !5 = !{i32 1, !"wchar_size", i32 4}76 !6 = distinct !DISubprogram(name: "foo", scope: !7, file: !7, line: 3, type: !8, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)77 !7 = !DIFile(filename: "lldb/test/API/lang/c/vla/main.c", directory: "/home/matt/src/llvm-project")78 !8 = !DISubroutineType(types: !9)79 !9 = !{!10, !10}80 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)81 !11 = !DILocalVariable(name: "a", arg: 1, scope: !6, file: !7, line: 3, type: !10)82 !12 = !DILocation(line: 3, column: 13, scope: !6)83 !13 = !DILocation(line: 4, column: 11, scope: !6)84 !14 = !DILocation(line: 4, column: 3, scope: !6)85 !15 = !DILocalVariable(name: "__vla_expr0", scope: !6, type: !16, flags: DIFlagArtificial)86 !16 = !DIBasicType(name: "long unsigned int", size: 64, encoding: DW_ATE_unsigned)87 !17 = !DILocation(line: 0, scope: !6)88 !18 = !DILocalVariable(name: "vla", scope: !6, file: !7, line: 4, type: !19)89 !19 = !DICompositeType(tag: DW_TAG_array_type, baseType: !10, elements: !20)90 !20 = !{!21}91 !21 = !DISubrange(count: !15)92 !22 = !DILocation(line: 4, column: 7, scope: !6)93 !23 = !DILocalVariable(name: "i", scope: !24, file: !7, line: 6, type: !10)94 !24 = distinct !DILexicalBlock(scope: !6, file: !7, line: 6, column: 3)95 !25 = !DILocation(line: 6, column: 12, scope: !24)96 !26 = !DILocation(line: 6, column: 8, scope: !24)97 !27 = !DILocation(line: 6, column: 19, scope: !28)98 !28 = distinct !DILexicalBlock(scope: !24, file: !7, line: 6, column: 3)99 !29 = !DILocation(line: 6, column: 23, scope: !28)100 !30 = !DILocation(line: 6, column: 21, scope: !28)101 !31 = !DILocation(line: 6, column: 3, scope: !24)102 !32 = !DILocation(line: 7, column: 14, scope: !28)103 !33 = !DILocation(line: 7, column: 16, scope: !28)104 !34 = !DILocation(line: 7, column: 15, scope: !28)105 !35 = !DILocation(line: 7, column: 9, scope: !28)106 !36 = !DILocation(line: 7, column: 5, scope: !28)107 !37 = !DILocation(line: 7, column: 12, scope: !28)108 !38 = !DILocation(line: 6, column: 26, scope: !28)109 !39 = !DILocation(line: 6, column: 3, scope: !28)110 !40 = distinct !{!40, !31, !41}111 !41 = !DILocation(line: 7, column: 16, scope: !24)112 !42 = !DILocation(line: 10, column: 14, scope: !6)113 !43 = !DILocation(line: 10, column: 15, scope: !6)114 !44 = !DILocation(line: 10, column: 10, scope: !6)115 !45 = !DILocation(line: 11, column: 1, scope: !6)116 117...118---119name: foo120tracksRegLiveness: true121frameInfo:122 adjustsStack: true123 hasCalls: true124stack:125 - { id: 0, name: a.addr, size: 4, alignment: 4, debug-info-variable: '!11',126 debug-info-expression: '!DIExpression()', debug-info-location: '!12' }127 - { id: 1, name: __vla_expr0, size: 8, alignment: 8, debug-info-variable: '!15',128 debug-info-expression: '!DIExpression()', debug-info-location: '!17' }129 - { id: 2, name: i, size: 4, alignment: 4, debug-info-variable: '!23',130 debug-info-expression: '!DIExpression()', debug-info-location: '!25' }131 - { id: 3, name: vla, type: variable-sized, alignment: 1 }132body: |133 ; CHECK-LABEL: name: foo134 ; CHECK: bb.0.entry:135 ; CHECK: successors: %bb.1(0x80000000)136 ; CHECK: liveins: $edi, $rbx137 ; CHECK: frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp138 ; CHECK: CFI_INSTRUCTION def_cfa_offset 16139 ; CHECK: CFI_INSTRUCTION offset $rbp, -16140 ; CHECK: $rbp = frame-setup MOV64rr $rsp141 ; CHECK: CFI_INSTRUCTION def_cfa_register $rbp142 ; CHECK: frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp, debug-location !13143 ; CHECK: $rsp = frame-setup SUB64ri32 $rsp, 40, implicit-def dead $eflags144 ; CHECK: CFI_INSTRUCTION offset $rbx, -24145 ; CHECK: renamable $eax = MOV32rm $rbp, 1, $noreg, -12, $noreg, debug-location !13 :: (dereferenceable load (s32) from %ir.a.addr)146 ; CHECK: renamable $rax = KILL killed renamable $eax, debug-location !13147 ; CHECK: $rcx = MOV64rr $rsp, debug-location !14148 ; CHECK: MOV64mr $rbp, 1, $noreg, -40, $noreg, $rcx :: (store (s64) into %stack.4)149 ; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22150 ; CHECK: $rsp = MOV64rr $rcx, debug-location !14151 ; CHECK: MOV64mr $rbp, 1, $noreg, -24, $noreg, killed renamable $rax, debug-location !14 :: (store (s64) into %ir.__vla_expr0)152 ; CHECK: DBG_VALUE renamable $rcx, 0, !18, !DIExpression(), debug-location !22153 ; CHECK: MOV32mi $rbp, 1, $noreg, -28, $noreg, 0, debug-location !25 :: (store (s32) into %ir.i)154 ; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22155 ; CHECK: bb.1.for.cond:156 ; CHECK: successors: %bb.4(0x40000000), %bb.2(0x40000000)157 ; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22158 ; CHECK: renamable $eax = MOV32rm $rbp, 1, $noreg, -28, $noreg, debug-location !27 :: (load (s32) from %ir.i)159 ; CHECK: CMP32rm killed renamable $eax, $rbp, 1, $noreg, -12, $noreg, implicit-def $eflags, debug-location !30 :: (load (s32) from %ir.a.addr)160 ; CHECK: JCC_1 %bb.4, 13, implicit killed $eflags, debug-location !31161 ; CHECK: bb.2.for.body:162 ; CHECK: successors: %bb.3(0x80000000)163 ; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22164 ; CHECK: $rax = MOV64rm $rbp, 1, $noreg, -40, $noreg :: (load (s64) from %stack.4)165 ; CHECK: renamable $edx = MOV32rm $rbp, 1, $noreg, -12, $noreg, debug-location !32 :: (load (s32) from %ir.a.addr)166 ; CHECK: renamable $rcx = MOVSX64rm32 $rbp, 1, $noreg, -28, $noreg, debug-location !36 :: (load (s32) from %ir.i)167 ; CHECK: MOV32mr renamable $rax, 4, killed renamable $rcx, 0, $noreg, killed renamable $edx, debug-location !37 :: (store (s32) into %ir.arrayidx)168 ; CHECK: bb.3.for.inc:169 ; CHECK: successors: %bb.1(0x80000000)170 ; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22171 ; CHECK: JMP_1 %bb.1, debug-location !39172 ; CHECK: bb.4.for.end:173 ; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22174 ; CHECK: $rax = IMPLICIT_DEF175 ; CHECK: $rax = MOV64rm $rbp, 1, $noreg, -40, $noreg :: (load (s64) from %stack.4)176 ; CHECK: dead $rbx = IMPLICIT_DEF177 ; CHECK: dead $rcx = IMPLICIT_DEF178 ; CHECK: dead $rdx = IMPLICIT_DEF179 ; CHECK: renamable $rcx = IMPLICIT_DEF180 ; CHECK: renamable $eax = MOV32rm killed renamable $rax, 4, killed renamable $rcx, 0, $noreg, debug-location !44 :: (load (s32) from %ir.arrayidx3)181 ; CHECK: $rsp = LEA64r $rbp, 1, $noreg, -8, $noreg, debug-location !45182 ; CHECK: $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !45183 ; CHECK: $rbp = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !45184 ; CHECK: CFI_INSTRUCTION def_cfa $rsp, 8, debug-location !45185 ; CHECK: RET64 implicit killed $eax, debug-location !45186 bb.0.entry:187 liveins: $edi188 189 %0:gr32 = COPY $edi190 %1:gr32 = MOV32rm %stack.0.a.addr, 1, $noreg, 0, $noreg, debug-location !13 :: (dereferenceable load (s32) from %ir.a.addr)191 %2:gr64_nosp = SUBREG_TO_REG 0, killed %1, %subreg.sub_32bit, debug-location !13192 ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !14193 %3:gr64 = COPY $rsp, debug-location !14194 $rsp = COPY %3, debug-location !14195 ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !14196 MOV64mr %stack.1.__vla_expr0, 1, $noreg, 0, $noreg, %2, debug-location !14 :: (store (s64) into %ir.__vla_expr0)197 DBG_VALUE %3, 0, !18, !DIExpression(), debug-location !22198 MOV32mi %stack.2.i, 1, $noreg, 0, $noreg, 0, debug-location !25 :: (store (s32) into %ir.i)199 200 bb.1.for.cond:201 %4:gr32 = MOV32rm %stack.2.i, 1, $noreg, 0, $noreg, debug-location !27 :: (load (s32) from %ir.i)202 CMP32rm %4, %stack.0.a.addr, 1, $noreg, 0, $noreg, implicit-def $eflags, debug-location !30 :: (load (s32) from %ir.a.addr)203 JCC_1 %bb.4, 13, implicit $eflags, debug-location !31204 205 bb.2.for.body:206 %5:gr32 = MOV32rm %stack.0.a.addr, 1, $noreg, 0, $noreg, debug-location !32 :: (load (s32) from %ir.a.addr)207 %6:gr64_nosp = MOVSX64rm32 %stack.2.i, 1, $noreg, 0, $noreg, debug-location !36 :: (load (s32) from %ir.i)208 MOV32mr %3, 4, %6, 0, $noreg, killed %5, debug-location !37 :: (store (s32) into %ir.arrayidx)209 210 bb.3.for.inc:211 JMP_1 %bb.1, debug-location !39212 213 bb.4.for.end:214 $rax = IMPLICIT_DEF215 $rbx = IMPLICIT_DEF216 $rcx = IMPLICIT_DEF217 $rdx = IMPLICIT_DEF218 %7:gr64_nosp = IMPLICIT_DEF219 %8:gr32 = MOV32rm %3, 4, %7, 0, $noreg, debug-location !44 :: (load (s32) from %ir.arrayidx3)220 $eax = COPY %8, debug-location !45221 RET64 implicit $eax, debug-location !45222 223...224