[llvm] 2ed29d8 - [CodeView] Fortran debug info emission in Code View.

Chih-Ping Chen via llvm-commits llvm-commits at lists.llvm.org
Tue Nov 2 12:06:52 PDT 2021


Author: Chih-Ping Chen
Date: 2021-11-02T15:06:21-04:00
New Revision: 2ed29d87efbe8a440fed6d171d4e33851fbb1c59

URL: https://github.com/llvm/llvm-project/commit/2ed29d87efbe8a440fed6d171d4e33851fbb1c59
DIFF: https://github.com/llvm/llvm-project/commit/2ed29d87efbe8a440fed6d171d4e33851fbb1c59.diff

LOG: [CodeView] Fortran debug info emission in Code View.

Differential Revision: https://reviews.llvm.org/D112826

Added: 
    llvm/test/DebugInfo/COFF/fortran-basic.ll

Modified: 
    llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
    llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h

Removed: 
    


################################################################################
diff  --git a/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
index 8d828f9b4ce3c..f997dc89b398d 100644
--- a/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
@@ -561,6 +561,44 @@ void CodeViewDebug::emitCodeViewMagicVersion() {
   OS.emitInt32(COFF::DEBUG_SECTION_MAGIC);
 }
 
+static SourceLanguage MapDWLangToCVLang(unsigned DWLang) {
+  switch (DWLang) {
+  case dwarf::DW_LANG_C:
+  case dwarf::DW_LANG_C89:
+  case dwarf::DW_LANG_C99:
+  case dwarf::DW_LANG_C11:
+  case dwarf::DW_LANG_ObjC:
+    return SourceLanguage::C;
+  case dwarf::DW_LANG_C_plus_plus:
+  case dwarf::DW_LANG_C_plus_plus_03:
+  case dwarf::DW_LANG_C_plus_plus_11:
+  case dwarf::DW_LANG_C_plus_plus_14:
+    return SourceLanguage::Cpp;
+  case dwarf::DW_LANG_Fortran77:
+  case dwarf::DW_LANG_Fortran90:
+  case dwarf::DW_LANG_Fortran95:
+  case dwarf::DW_LANG_Fortran03:
+  case dwarf::DW_LANG_Fortran08:
+    return SourceLanguage::Fortran;
+  case dwarf::DW_LANG_Pascal83:
+    return SourceLanguage::Pascal;
+  case dwarf::DW_LANG_Cobol74:
+  case dwarf::DW_LANG_Cobol85:
+    return SourceLanguage::Cobol;
+  case dwarf::DW_LANG_Java:
+    return SourceLanguage::Java;
+  case dwarf::DW_LANG_D:
+    return SourceLanguage::D;
+  case dwarf::DW_LANG_Swift:
+    return SourceLanguage::Swift;
+  default:
+    // There's no CodeView representation for this language, and CV doesn't
+    // have an "unknown" option for the language field, so we'll use MASM,
+    // as it's very low level.
+    return SourceLanguage::Masm;
+  }
+}
+
 void CodeViewDebug::beginModule(Module *M) {
   // If module doesn't have named metadata anchors or COFF debug section
   // is not available, skip any debug info related stuff.
@@ -574,6 +612,13 @@ void CodeViewDebug::beginModule(Module *M) {
 
   TheCPU = mapArchToCVCPUType(Triple(M->getTargetTriple()).getArch());
 
+  // Get the current source language.
+  NamedMDNode *CUs = MMI->getModule()->getNamedMetadata("llvm.dbg.cu");
+  const MDNode *Node = *CUs->operands().begin();
+  const auto *CU = cast<DICompileUnit>(Node);
+
+  CurrentSourceLanguage = MapDWLangToCVLang(CU->getSourceLanguage());
+
   collectGlobalVariableInfo();
 
   // Check if we should emit type record hashes.
@@ -731,44 +776,6 @@ void CodeViewDebug::emitTypeGlobalHashes() {
   }
 }
 
-static SourceLanguage MapDWLangToCVLang(unsigned DWLang) {
-  switch (DWLang) {
-  case dwarf::DW_LANG_C:
-  case dwarf::DW_LANG_C89:
-  case dwarf::DW_LANG_C99:
-  case dwarf::DW_LANG_C11:
-  case dwarf::DW_LANG_ObjC:
-    return SourceLanguage::C;
-  case dwarf::DW_LANG_C_plus_plus:
-  case dwarf::DW_LANG_C_plus_plus_03:
-  case dwarf::DW_LANG_C_plus_plus_11:
-  case dwarf::DW_LANG_C_plus_plus_14:
-    return SourceLanguage::Cpp;
-  case dwarf::DW_LANG_Fortran77:
-  case dwarf::DW_LANG_Fortran90:
-  case dwarf::DW_LANG_Fortran95:
-  case dwarf::DW_LANG_Fortran03:
-  case dwarf::DW_LANG_Fortran08:
-    return SourceLanguage::Fortran;
-  case dwarf::DW_LANG_Pascal83:
-    return SourceLanguage::Pascal;
-  case dwarf::DW_LANG_Cobol74:
-  case dwarf::DW_LANG_Cobol85:
-    return SourceLanguage::Cobol;
-  case dwarf::DW_LANG_Java:
-    return SourceLanguage::Java;
-  case dwarf::DW_LANG_D:
-    return SourceLanguage::D;
-  case dwarf::DW_LANG_Swift:
-    return SourceLanguage::Swift;
-  default:
-    // There's no CodeView representation for this language, and CV doesn't
-    // have an "unknown" option for the language field, so we'll use MASM,
-    // as it's very low level.
-    return SourceLanguage::Masm;
-  }
-}
-
 namespace {
 struct Version {
   int Part[4];
@@ -798,12 +805,8 @@ void CodeViewDebug::emitCompilerInformation() {
   MCSymbol *CompilerEnd = beginSymbolRecord(SymbolKind::S_COMPILE3);
   uint32_t Flags = 0;
 
-  NamedMDNode *CUs = MMI->getModule()->getNamedMetadata("llvm.dbg.cu");
-  const MDNode *Node = *CUs->operands().begin();
-  const auto *CU = cast<DICompileUnit>(Node);
-
   // The low byte of the flags indicates the source language.
-  Flags = MapDWLangToCVLang(CU->getSourceLanguage());
+  Flags = CurrentSourceLanguage;
   // TODO:  Figure out which other flags need to be set.
   if (MMI->getModule()->getProfileSummary(/*IsCS*/ false) != nullptr) {
     Flags |= static_cast<uint32_t>(CompileSym3Flags::PGO);
@@ -815,6 +818,10 @@ void CodeViewDebug::emitCompilerInformation() {
   OS.AddComment("CPUType");
   OS.emitInt16(static_cast<uint64_t>(TheCPU));
 
+  NamedMDNode *CUs = MMI->getModule()->getNamedMetadata("llvm.dbg.cu");
+  const MDNode *Node = *CUs->operands().begin();
+  const auto *CU = cast<DICompileUnit>(Node);
+
   StringRef CompilerVersion = CU->getProducer();
   Version FrontVer = parseVersion(CompilerVersion);
   OS.AddComment("Frontend version");
@@ -1574,6 +1581,8 @@ TypeIndex CodeViewDebug::lowerType(const DIType *Ty, const DIType *ClassTy) {
     return lowerTypeClass(cast<DICompositeType>(Ty));
   case dwarf::DW_TAG_union_type:
     return lowerTypeUnion(cast<DICompositeType>(Ty));
+  case dwarf::DW_TAG_string_type:
+    return lowerTypeString(cast<DIStringType>(Ty));
   case dwarf::DW_TAG_unspecified_type:
     if (Ty->getName() == "decltype(nullptr)")
       return TypeIndex::NullptrT();
@@ -1618,14 +1627,19 @@ TypeIndex CodeViewDebug::lowerTypeArray(const DICompositeType *Ty) {
 
     const DISubrange *Subrange = cast<DISubrange>(Element);
     int64_t Count = -1;
-    // Calculate the count if either LowerBound is absent or is zero and
-    // either of Count or UpperBound are constant.
-    auto *LI = Subrange->getLowerBound().dyn_cast<ConstantInt *>();
-    if (!Subrange->getRawLowerBound() || (LI && (LI->getSExtValue() == 0))) {
-      if (auto *CI = Subrange->getCount().dyn_cast<ConstantInt*>())
-        Count = CI->getSExtValue();
-      else if (auto *UI = Subrange->getUpperBound().dyn_cast<ConstantInt*>())
-        Count = UI->getSExtValue() + 1; // LowerBound is zero
+
+    // If Subrange has a Count field, use it.
+    // Otherwise, if it has an upperboud, use (upperbound - lowerbound + 1),
+    // where lowerbound is from the LowerBound field of the Subrange,
+    // or the language default lowerbound if that field is unspecified.
+    if (auto *CI = Subrange->getCount().dyn_cast<ConstantInt *>())
+      Count = CI->getSExtValue();
+    else if (auto *UI = Subrange->getUpperBound().dyn_cast<ConstantInt *>()) {
+      // Fortran uses 1 as the default lowerbound; other languages use 0.
+      int64_t Lowerbound = (moduleIsInFortran()) ? 1 : 0;
+      auto *LI = Subrange->getLowerBound().dyn_cast<ConstantInt *>();
+      Lowerbound = (LI) ? LI->getSExtValue() : Lowerbound;
+      Count = UI->getSExtValue() - Lowerbound + 1;
     }
 
     // Forward declarations of arrays without a size and VLAs use a count of -1.
@@ -1651,6 +1665,26 @@ TypeIndex CodeViewDebug::lowerTypeArray(const DICompositeType *Ty) {
   return ElementTypeIndex;
 }
 
+// This function lowers a Fortran character type (DIStringType).
+// Note that it handles only the character*n variant (using SizeInBits
+// field in DIString to describe the type size) at the moment.
+// Other variants (leveraging the StringLength and StringLengthExp
+// fields in DIStringType) remain TBD.
+TypeIndex CodeViewDebug::lowerTypeString(const DIStringType *Ty) {
+  TypeIndex CharType = TypeIndex(SimpleTypeKind::NarrowCharacter);
+  uint64_t ArraySize = Ty->getSizeInBits() >> 3;
+  StringRef Name = Ty->getName();
+  // IndexType is size_t, which depends on the bitness of the target.
+  TypeIndex IndexType = getPointerSizeInBytes() == 8
+                            ? TypeIndex(SimpleTypeKind::UInt64Quad)
+                            : TypeIndex(SimpleTypeKind::UInt32Long);
+
+  // Create a type of character array of ArraySize.
+  ArrayRecord AR(CharType, IndexType, ArraySize, Name);
+
+  return TypeTable.writeLeafType(AR);
+}
+
 TypeIndex CodeViewDebug::lowerTypeBasic(const DIBasicType *Ty) {
   TypeIndex Index;
   dwarf::TypeKind Kind;
@@ -2183,6 +2217,7 @@ void CodeViewDebug::clear() {
   TypeIndices.clear();
   CompleteTypeIndices.clear();
   ScopeGlobals.clear();
+  CVGlobalVariableOffsets.clear();
 }
 
 void CodeViewDebug::collectMemberInfo(ClassInfo &Info,
@@ -3068,6 +3103,15 @@ void CodeViewDebug::collectGlobalVariableInfo() {
       const DIGlobalVariable *DIGV = GVE->getVariable();
       const DIExpression *DIE = GVE->getExpression();
 
+      if ((DIE->getNumElements() == 2) &&
+          (DIE->getElement(0) == dwarf::DW_OP_plus_uconst))
+        // Record the constant offset for the variable.
+        //
+        // A Fortran common block uses this idiom to encode the offset
+        // of a variable from the common block's starting address.
+        CVGlobalVariableOffsets.insert(
+            std::make_pair(DIGV, DIE->getElement(1)));
+
       // Emit constant global variables in a global symbol section.
       if (GlobalMap.count(GVE) == 0 && DIE->isConstant()) {
         CVGlobalVariable CVGV = {DIGV, DIE};
@@ -3232,7 +3276,11 @@ void CodeViewDebug::emitDebugInfoForGlobal(const CVGlobalVariable &CVGV) {
   if (const auto *MemberDecl = dyn_cast_or_null<DIDerivedType>(
           DIGV->getRawStaticDataMemberDeclaration()))
     Scope = MemberDecl->getScope();
-  std::string QualifiedName = getFullyQualifiedName(Scope, DIGV->getName());
+  // For Fortran, the scoping portion is elided in its name so that we can
+  // reference the variable in the command line of the VS debugger.
+  std::string QualifiedName =
+      (moduleIsInFortran()) ? std::string(DIGV->getName())
+                            : getFullyQualifiedName(Scope, DIGV->getName());
 
   if (const GlobalVariable *GV =
           CVGV.GVInfo.dyn_cast<const GlobalVariable *>()) {
@@ -3248,7 +3296,13 @@ void CodeViewDebug::emitDebugInfoForGlobal(const CVGlobalVariable &CVGV) {
     OS.AddComment("Type");
     OS.emitInt32(getCompleteTypeIndex(DIGV->getType()).getIndex());
     OS.AddComment("DataOffset");
-    OS.EmitCOFFSecRel32(GVSym, /*Offset=*/0);
+
+    uint64_t Offset = 0;
+    if (CVGlobalVariableOffsets.find(DIGV) != CVGlobalVariableOffsets.end())
+      // Use the offset seen while collecting info on globals.
+      Offset = CVGlobalVariableOffsets[DIGV];
+    OS.EmitCOFFSecRel32(GVSym, Offset);
+
     OS.AddComment("Segment");
     OS.EmitCOFFSectionIndex(GVSym);
     OS.AddComment("Name");

diff  --git a/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h b/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h
index d133474ee5aab..6f88e15ee8fee 100644
--- a/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h
+++ b/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h
@@ -186,6 +186,13 @@ class LLVM_LIBRARY_VISIBILITY CodeViewDebug : public DebugHandlerBase {
   };
   FunctionInfo *CurFn = nullptr;
 
+  codeview::SourceLanguage CurrentSourceLanguage =
+      codeview::SourceLanguage::Masm;
+
+  // This map records the constant offset in DIExpression of the
+  // DIGlobalVariableExpression referencing the DIGlobalVariable.
+  DenseMap<const DIGlobalVariable *, uint64_t> CVGlobalVariableOffsets;
+
   // Map used to seperate variables according to the lexical scope they belong
   // in.  This is populated by recordLocalVariable() before
   // collectLexicalBlocks() separates the variables between the FunctionInfo
@@ -400,6 +407,7 @@ class LLVM_LIBRARY_VISIBILITY CodeViewDebug : public DebugHandlerBase {
   codeview::TypeIndex lowerType(const DIType *Ty, const DIType *ClassTy);
   codeview::TypeIndex lowerTypeAlias(const DIDerivedType *Ty);
   codeview::TypeIndex lowerTypeArray(const DICompositeType *Ty);
+  codeview::TypeIndex lowerTypeString(const DIStringType *Ty);
   codeview::TypeIndex lowerTypeBasic(const DIBasicType *Ty);
   codeview::TypeIndex lowerTypePointer(
       const DIDerivedType *Ty,
@@ -464,6 +472,11 @@ class LLVM_LIBRARY_VISIBILITY CodeViewDebug : public DebugHandlerBase {
   /// Gather post-function debug information.
   void endFunctionImpl(const MachineFunction *) override;
 
+  /// Check if the current module is in Fortran.
+  bool moduleIsInFortran() {
+    return CurrentSourceLanguage == codeview::SourceLanguage::Fortran;
+  }
+
 public:
   CodeViewDebug(AsmPrinter *AP);
 

diff  --git a/llvm/test/DebugInfo/COFF/fortran-basic.ll b/llvm/test/DebugInfo/COFF/fortran-basic.ll
new file mode 100644
index 0000000000000..96f3af3ebda96
--- /dev/null
+++ b/llvm/test/DebugInfo/COFF/fortran-basic.ll
@@ -0,0 +1,143 @@
+; RUN: llc < %s -filetype=obj | llvm-readobj - --codeview | FileCheck %s
+;
+; The IR in this test derives from the following Fortran program:
+;	program array
+;	  integer array1, array2
+;	  dimension array1(10)
+;         dimension array2(3:10)
+;         double precision d
+;         logical l
+;         character*6 c
+;
+;         common /com/ d, l, c
+;
+;         array1(1) = 1
+;         array2(3) = 2
+;         d = 8.0
+;         l = .TRUE.
+;         c = 'oooooo'
+;	end
+;
+; CHECK: Array ([[array2_t:.*]]) {
+; CHECK-NEXT: TypeLeafKind: LF_ARRAY
+; CHECK-NEXT: ElementType: int
+; CHECK-NEXT: IndexType: unsigned __int64
+; CHECK-NEXT: SizeOf: 32
+;
+; CHECK: Array ([[array1_t:.*]]) {
+; CHECK-NEXT: TypeLeafKind: LF_ARRAY
+; CHECK-NEXT: ElementType: int
+; CHECK-NEXT: IndexType: unsigned __int64
+; CHECK-NEXT: SizeOf: 40
+;
+; CHECK: Array ([[char_6_t:.*]]) {
+; CHECK-NEXT: TypeLeafKind: LF_ARRAY
+; CHECK-NEXT: ElementType: char
+; CHECK-NEXT: IndexType: unsigned __int64
+; CHECK-NEXT: SizeOf: 6
+; CHECK-NEXT: CHARACTER_0
+;
+; CHECK: DataOffset: ARRAY$ARRAY2+0x0
+; CHECK-NEXT: Type: [[array2_t]]
+; CHECK-NEXT: DisplayName: ARRAY2
+; CHECK-NEXT: LinkageName: ARRAY$ARRAY2
+;
+; CHECK: DataOffset: ARRAY$ARRAY1+0x0
+; CHECK-NEXT: Type: [[array1_t]]
+; CHECK-NEXT: DisplayName: ARRAY1
+; CHECK-NEXT: LinkageName: ARRAY$ARRAY1
+;
+; CHECK: DataOffset: COM+0x0
+; CHECK-NEXT: Type: double
+; CHECK-NEXT: DisplayName: D
+; CHECK-NEXT: LinkageName: COM
+;
+; CHECK: DataOffset: COM+0x8
+; CHECK-NEXT: Type: __bool32
+; CHECK-NEXT: DisplayName: L
+; CHECK-NEXT: LinkageName: COM
+;
+; CHECK: DataOffset: COM+0xC
+; CHECK-NEXT: Type: CHARACTER_0 ([[char_6_t]])
+; CHECK-NEXT: DisplayName: C
+; CHECK-NEXT: LinkageName: COM
+
+; ModuleID = 'fortran-basic.f'
+source_filename = "fortran-basic.f"
+target datalayout = "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-windows-msvc"
+
+ at strlit = internal unnamed_addr constant [6 x i8] c"oooooo"
+ at COM = common unnamed_addr global [18 x i8] zeroinitializer, align 32, !dbg !0, !dbg !9, !dbg !12
+@"ARRAY$ARRAY2" = internal global [8 x i32] zeroinitializer, align 16, !dbg !15
+@"ARRAY$ARRAY1" = internal global [10 x i32] zeroinitializer, align 16, !dbg !21
+ at 0 = internal unnamed_addr constant i32 2
+
+; Function Attrs: noinline nounwind optnone uwtable
+define void @MAIN__() #0 !dbg !3 {
+alloca_0:
+  %"$io_ctx" = alloca [6 x i64], align 8
+  %strlit_fetch.1 = load [6 x i8], [6 x i8]* @strlit, align 1, !dbg !39
+  %func_result = call i32 @for_set_reentrancy(i32* @0), !dbg !39
+  store i32 1, i32* getelementptr inbounds ([10 x i32], [10 x i32]* @"ARRAY$ARRAY1", i32 0, i32 0), align 1, !dbg !40
+  store i32 2, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @"ARRAY$ARRAY2", i32 0, i32 0), align 1, !dbg !41
+  store double 8.000000e+00, double* bitcast ([18 x i8]* @COM to double*), align 1, !dbg !42
+  store i32 -1, i32* bitcast (i8* getelementptr inbounds ([18 x i8], [18 x i8]* @COM, i32 0, i64 8) to i32*), align 1, !dbg !43
+  call void @llvm.for.cpystr.i64.i64.i64(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @COM, i32 0, i64 12), i64 6, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @strlit, i32 0, i32 0), i64 3, i64 0, i1 false), !dbg !44
+  ret void, !dbg !45
+}
+
+declare i32 @for_set_reentrancy(i32* nocapture readonly)
+
+; Function Attrs: nounwind readnone speculatable
+declare i32* @llvm.intel.subscript.p0i32.i64.i64.p0i32.i64(i8, i64, i64, i32*, i64) #1
+
+; Function Attrs: argmemonly nofree nosync nounwind willreturn
+declare void @llvm.for.cpystr.i64.i64.i64(i8* noalias nocapture writeonly, i64, i8* noalias nocapture readonly, i64, i64, i1 immarg) #2
+
+attributes #0 = { noinline nounwind optnone uwtable "frame-pointer"="none" "intel-lang"="fortran" "min-legal-vector-width"="0" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" }
+attributes #1 = { nounwind readnone speculatable }
+attributes #2 = { argmemonly nofree nosync nounwind willreturn }
+
+!llvm.module.flags = !{!28, !29, !30}
+!llvm.dbg.cu = !{!7}
+!omp_offload.info = !{}
+
+!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
+!1 = distinct !DIGlobalVariable(name: "D", linkageName: "COM", scope: !2, file: !4, line: 5, type: !27, isLocal: false, isDefinition: true)
+!2 = !DICommonBlock(scope: !3, declaration: null, name: "COM", file: !4, line: 8)
+!3 = distinct !DISubprogram(name: "ARRAY", linkageName: "MAIN__", scope: !4, file: !4, line: 1, type: !5, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagMainSubprogram, unit: !7, retainedNodes: !26)
+!4 = !DIFile(filename: "fortran-basic.f", directory: "d:\\iusers\\cchen15\\examples\\tests\\vsdF-nightly\\vsdF\\opt_none_debug")
+!5 = !DISubroutineType(types: !6)
+!6 = !{null}
+!7 = distinct !DICompileUnit(language: DW_LANG_Fortran95, file: !4, producer: "Intel(R) Fortran 22.0-1034", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, globals: !8, splitDebugInlining: false, nameTableKind: None)
+!8 = !{!0, !9, !12, !15, !21}
+!9 = !DIGlobalVariableExpression(var: !10, expr: !DIExpression(DW_OP_plus_uconst, 8))
+!10 = distinct !DIGlobalVariable(name: "L", linkageName: "COM", scope: !2, file: !4, line: 6, type: !11, isLocal: false, isDefinition: true)
+!11 = !DIBasicType(name: "LOGICAL*4", size: 32, encoding: DW_ATE_boolean)
+!12 = !DIGlobalVariableExpression(var: !13, expr: !DIExpression(DW_OP_plus_uconst, 12))
+!13 = distinct !DIGlobalVariable(name: "C", linkageName: "COM", scope: !2, file: !4, line: 7, type: !14, isLocal: false, isDefinition: true)
+!14 = !DIStringType(name: "CHARACTER_0", size: 48)
+!15 = !DIGlobalVariableExpression(var: !16, expr: !DIExpression())
+!16 = distinct !DIGlobalVariable(name: "ARRAY2", linkageName: "ARRAY$ARRAY2", scope: !3, file: !4, line: 2, type: !17, isLocal: true, isDefinition: true)
+!17 = !DICompositeType(tag: DW_TAG_array_type, baseType: !18, elements: !19)
+!18 = !DIBasicType(name: "INTEGER*4", size: 32, encoding: DW_ATE_signed)
+!19 = !{!20}
+!20 = !DISubrange(lowerBound: 3, upperBound: 10)
+!21 = !DIGlobalVariableExpression(var: !22, expr: !DIExpression())
+!22 = distinct !DIGlobalVariable(name: "ARRAY1", linkageName: "ARRAY$ARRAY1", scope: !3, file: !4, line: 2, type: !23, isLocal: true, isDefinition: true)
+!23 = !DICompositeType(tag: DW_TAG_array_type, baseType: !18, elements: !24)
+!24 = !{!25}
+!25 = !DISubrange(count: 10, lowerBound: 1)
+!26 = !{}
+!27 = !DIBasicType(name: "REAL*8", size: 64, encoding: DW_ATE_float)
+!28 = !{i32 7, !"PIC Level", i32 2}
+!29 = !{i32 2, !"Debug Info Version", i32 3}
+!30 = !{i32 2, !"CodeView", i32 1}
+!39 = !DILocation(line: 1, column: 10, scope: !3)
+!40 = !DILocation(line: 9, column: 9, scope: !3)
+!41 = !DILocation(line: 10, column: 9, scope: !3)
+!42 = !DILocation(line: 11, column: 9, scope: !3)
+!43 = !DILocation(line: 12, column: 9, scope: !3)
+!44 = !DILocation(line: 13, column: 9, scope: !3)
+!45 = !DILocation(line: 14, column: 2, scope: !3)


        


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