Revert "[BTF] Add BTF DebugInfo"

This reverts commit 9c6b970db8bc63b28ce58a129bb1580a6a3c6caf.

llvm-svn: 348004
diff --git a/llvm/include/llvm/BinaryFormat/BTF.def b/llvm/include/llvm/BinaryFormat/BTF.def
deleted file mode 100644
index 5dcef30..0000000
--- a/llvm/include/llvm/BinaryFormat/BTF.def
+++ /dev/null
@@ -1,33 +0,0 @@
-//===- llvm/BinaryFormat/BTF.def - BTF definitions --------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// Macros for BTF.
-//
-//===----------------------------------------------------------------------===//
-
-#if !defined(HANDLE_BTF_KIND)
-#error "Missing macro definition of HANDLE_BTF_*"
-#endif
-
-HANDLE_BTF_KIND(0, UNKN)
-HANDLE_BTF_KIND(1, INT)
-HANDLE_BTF_KIND(2, PTR)
-HANDLE_BTF_KIND(3, ARRAY)
-HANDLE_BTF_KIND(4, STRUCT)
-HANDLE_BTF_KIND(5, UNION)
-HANDLE_BTF_KIND(6, ENUM)
-HANDLE_BTF_KIND(7, FWD)
-HANDLE_BTF_KIND(8, TYPEDEF)
-HANDLE_BTF_KIND(9, VOLATILE)
-HANDLE_BTF_KIND(10, CONST)
-HANDLE_BTF_KIND(11, RESTRICT)
-HANDLE_BTF_KIND(12, FUNC)
-HANDLE_BTF_KIND(13, FUNC_PROTO)
-
-#undef HANDLE_BTF_KIND
diff --git a/llvm/include/llvm/BinaryFormat/BTF.h b/llvm/include/llvm/BinaryFormat/BTF.h
deleted file mode 100644
index 3885e04..0000000
--- a/llvm/include/llvm/BinaryFormat/BTF.h
+++ /dev/null
@@ -1,203 +0,0 @@
-//===-- llvm/BinaryFormat/BTF.h ---------------------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-///
-/// \file
-/// This file contains the layout of .BTF and .BTF.ext ELF sections.
-///
-/// The binary layout for .BTF section:
-///   struct Header
-///   Type and Str subsections
-/// The Type subsection is a collection of types with type id starting with 1.
-/// The Str subsection is simply a collection of strings.
-///
-/// The binary layout for .BTF.ext section:
-///   struct ExtHeader
-///   FuncInfo and LineInfo subsections
-/// The FuncInfo subsection is defined as below:
-///   BTFFuncInfo Size
-///   struct SecFuncInfo for ELF section #1
-///   A number of struct BPFFuncInfo for ELF section #1
-///   struct SecFuncInfo for ELF section #2
-///   A number of struct BPFFuncInfo for ELF section #2
-///   ...
-/// The LineInfo subsection is defined as below:
-///   BPFLineInfo Size
-///   struct SecLineInfo for ELF section #1
-///   A number of struct BPFLineInfo for ELF section #1
-///   struct SecLineInfo for ELF section #2
-///   A number of struct BPFLineInfo for ELF section #2
-///   ...
-///
-/// The section formats are also defined at
-///    https://github.com/torvalds/linux/blob/master/include/uapi/linux/btf.h
-///
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_BINARYFORMAT_BTF_H
-#define LLVM_BINARYFORMAT_BTF_H
-
-namespace llvm {
-namespace BTF {
-
-enum : uint32_t { MAGIC = 0xeB9F, VERSION = 1 };
-
-/// Sizes in bytes of various things in the BTF format.
-enum {
-  HeaderSize = 24,
-  ExtHeaderSize = 24,
-  CommonTypeSize = 12,
-  BTFArraySize = 12,
-  BTFEnumSize = 8,
-  BTFMemberSize = 12,
-  BTFParamSize = 8,
-  SecFuncInfoSize = 8,
-  SecLineInfoSize = 8,
-  BPFFuncInfoSize = 8,
-  BPFLineInfoSize = 16
-};
-
-/// The .BTF section header definition.
-struct Header {
-  uint16_t Magic;  ///< Magic value
-  uint8_t Version; ///< Version number
-  uint8_t Flags;   ///< Extra flags
-  uint32_t HdrLen; ///< Length of this header
-
-  /// All offsets are in bytes relative to the end of this header.
-  uint32_t TypeOff; ///< Offset of type section
-  uint32_t TypeLen; ///< Length of type section
-  uint32_t StrOff;  ///< Offset of string section
-  uint32_t StrLen;  ///< Length of string section
-};
-
-enum : uint32_t {
-  MAX_TYPE = 0xffff,        ///< Max # of type identifier
-  MAX_NAME_OFFSET = 0xffff, ///< Max offset into the string section
-  MAX_VLEN = 0xffff         ///< Max # of struct/union/enum members or func args
-};
-
-enum TypeKinds : uint8_t {
-#define HANDLE_BTF_KIND(ID, NAME) BTF_KIND_##NAME = ID,
-#include "llvm/BinaryFormat/BTF.def"
-};
-
-/// The BTF common type definition. Different kinds may have
-/// additional information after this structure data.
-struct CommonType {
-  /// Type name offset in the string table.
-  uint32_t NameOff;
-
-  /// "Info" bits arrangement:
-  /// Bits  0-15: vlen (e.g. # of struct's members)
-  /// Bits 16-23: unused
-  /// Bits 24-27: kind (e.g. int, ptr, array...etc)
-  /// Bits 28-31: unused
-  uint32_t Info;
-
-  /// "Size" is used by INT, ENUM, STRUCT and UNION.
-  /// "Size" tells the size of the type it is describing.
-  ///
-  /// "Type" is used by PTR, TYPEDEF, VOLATILE, CONST, RESTRICT,
-  /// FUNC and FUNC_PROTO.
-  /// "Type" is a type_id referring to another type.
-  union {
-    uint32_t Size;
-    uint32_t Type;
-  };
-};
-
-// For some specific BTF_KIND, "struct CommonType" is immediately
-// followed by extra data.
-
-// BTF_KIND_INT is followed by a u32 and the following
-// is the 32 bits arrangement:
-// BTF_INT_ENCODING(VAL) : (((VAL) & 0x0f000000) >> 24)
-// BTF_INT_OFFSET(VAL) : (((VAL & 0x00ff0000)) >> 16)
-// BTF_INT_BITS(VAL) : ((VAL) & 0x000000ff)
-
-/// Attributes stored in the INT_ENCODING.
-enum : uint8_t { INT_SIGNED = (1 << 0), INT_CHAR = (1 << 1), INT_BOOL = (1 << 2) };
-
-/// BTF_KIND_ENUM is followed by multiple "struct BTFEnum".
-/// The exact number of btf_enum is stored in the vlen (of the
-/// info in "struct CommonType").
-struct BTFEnum {
-  uint32_t NameOff; ///< Enum name offset in the string table
-  int32_t Val;      ///< Enum member value
-};
-
-/// BTF_KIND_ARRAY is followed by one "struct BTFArray".
-struct BTFArray {
-  uint32_t ElemType;  ///< Element type
-  uint32_t IndexType; ///< Index type
-  uint32_t Nelems;    ///< Number of elements for this array
-};
-
-/// BTF_KIND_STRUCT and BTF_KIND_UNION are followed
-/// by multiple "struct BTFMember".  The exact number
-/// of BTFMember is stored in the vlen (of the info in
-/// "struct CommonType").
-struct BTFMember {
-  uint32_t NameOff; ///< Member name offset in the string table
-  uint32_t Type;    ///< Member type
-  uint32_t Offset;  ///< Offset in bits from the struct start
-};
-
-/// BTF_KIND_FUNC_PROTO are followed by multiple "struct BTFParam".
-/// The exist number of BTFParam is stored in the vlen (of the info
-/// in "struct CommonType").
-struct BTFParam {
-  uint32_t NameOff;
-  uint32_t Type;
-};
-
-/// The .BTF.ext section header definition.
-struct ExtHeader {
-  uint16_t Magic;
-  uint8_t Version;
-  uint8_t Flags;
-  uint32_t HdrLen;
-
-  uint32_t FuncInfoOff; ///< Offset of func info section
-  uint32_t FuncInfoLen; ///< Length of func info section
-  uint32_t LineInfoOff; ///< Offset of line info section
-  uint32_t LineInfoLen; ///< Length of line info section
-};
-
-/// Specifying one function info.
-struct BPFFuncInfo {
-  uint32_t InsnOffset; ///< Byte offset in the section
-  uint32_t TypeId;     ///< Type id referring to .BTF type section
-};
-
-/// Specifying function info's in one section.
-struct SecFuncInfo {
-  uint32_t SecNameOff;  ///< Section name index in the .BTF string table
-  uint32_t NumFuncInfo; ///< Number of func info's in this section
-};
-
-/// Specifying one line info.
-struct BPFLineInfo {
-  uint32_t InsnOffset;  ///< Byte offset in this section
-  uint32_t FileNameOff; ///< File name index in the .BTF string table
-  uint32_t LineOff;     ///< Line index in the .BTF string table
-  uint32_t LineCol;     ///< Line num: line_col >> 10,
-                        ///  col num: line_col & 0x3ff
-};
-
-/// Specifying line info's in one section.
-struct SecLineInfo {
-  uint32_t SecNameOff;  ///< Section name index in the .BTF string tble
-  uint32_t NumLineInfo; ///< Number of line info's in this section
-};
-
-} // End namespace BTF.
-} // End namespace llvm.
-
-#endif
diff --git a/llvm/include/llvm/MC/MCObjectFileInfo.h b/llvm/include/llvm/MC/MCObjectFileInfo.h
index 696b18a..97c1f27 100644
--- a/llvm/include/llvm/MC/MCObjectFileInfo.h
+++ b/llvm/include/llvm/MC/MCObjectFileInfo.h
@@ -209,14 +209,6 @@
   MCSection *SXDataSection;
   MCSection *GFIDsSection;
 
-  /// BTF-specific sections. BTF stands for BPF Type Format which is
-  /// designed for BPF target and consumed by BPF loader and
-  /// the kernel.
-  /// @{
-  MCSection *BTFSection;
-  MCSection *BTFExtSection;
-  /// @}
-
 public:
   void InitMCObjectFileInfo(const Triple &TT, bool PIC, MCContext &ctx,
                             bool LargeCodeModel = false);
@@ -388,12 +380,6 @@
     return EHFrameSection;
   }
 
-  // BTF specific sections.
-  /// @{
-  MCSection *getBTFSection() const { return BTFSection; }
-  MCSection *getBTFExtSection() const { return BTFExtSection; }
-  /// @}
-
   enum Environment { IsMachO, IsELF, IsCOFF, IsWasm };
   Environment getObjectFileType() const { return Env; }
 
diff --git a/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index dd930fe..a1622da 100644
--- a/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -13,7 +13,6 @@
 
 #include "llvm/CodeGen/AsmPrinter.h"
 #include "AsmPrinterHandler.h"
-#include "BTFDebug.h"
 #include "CodeViewDebug.h"
 #include "DwarfDebug.h"
 #include "DwarfException.h"
@@ -141,8 +140,6 @@
 static const char *const CodeViewLineTablesGroupName = "linetables";
 static const char *const CodeViewLineTablesGroupDescription =
   "CodeView Line Tables";
-static const char *const BTFGroupName = "BTF";
-static const char *const BTFGroupDescription = "BTF Emission";
 
 STATISTIC(EmittedInsts, "Number of machine instrs printed");
 
@@ -314,12 +311,6 @@
       Handlers.push_back(HandlerInfo(DD, DbgTimerName, DbgTimerDescription,
                                      DWARFGroupName, DWARFGroupDescription));
     }
-    const Triple &TT = TM.getTargetTriple();
-    if (TT.getArch() == Triple::bpfel || TT.getArch() == Triple::bpfeb) {
-      Handlers.push_back(HandlerInfo(new BTFDebug(this),
-                                     DbgTimerName, DbgTimerDescription,
-                                     BTFGroupName, BTFGroupDescription));
-    }
   }
 
   switch (MAI->getExceptionHandlingType()) {
diff --git a/llvm/lib/CodeGen/AsmPrinter/BTFDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/BTFDebug.cpp
deleted file mode 100644
index be5a60c..0000000
--- a/llvm/lib/CodeGen/AsmPrinter/BTFDebug.cpp
+++ /dev/null
@@ -1,770 +0,0 @@
-//===- llvm/lib/CodeGen/AsmPrinter/BTFDebug.cpp ---------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file contains support for writing BTF debug info.
-//
-//===----------------------------------------------------------------------===//
-
-#include "BTFDebug.h"
-#include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/CodeGen/MachineModuleInfo.h"
-#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCObjectFileInfo.h"
-#include "llvm/MC/MCSectionELF.h"
-#include "llvm/MC/MCStreamer.h"
-#include <fstream>
-#include <sstream>
-
-using namespace llvm;
-
-static const char *BTFKindStr[] = {
-#define HANDLE_BTF_KIND(ID, NAME) "BTF_KIND_" #NAME,
-#include "llvm/BinaryFormat/BTF.def"
-};
-
-/// Emit a BTF common type.
-void BTFTypeBase::emitType(MCStreamer &OS) {
-  OS.AddComment(std::string(BTFKindStr[Kind]) + "(id = " + std::to_string(Id) +
-                ")");
-  OS.EmitIntValue(BTFType.NameOff, 4);
-  OS.AddComment("0x" + Twine::utohexstr(BTFType.Info));
-  OS.EmitIntValue(BTFType.Info, 4);
-  OS.EmitIntValue(BTFType.Size, 4);
-}
-
-BTFTypeDerived::BTFTypeDerived(const DIDerivedType *DTy, unsigned Tag)
-    : DTy(DTy) {
-  switch (Tag) {
-  case dwarf::DW_TAG_pointer_type:
-    Kind = BTF::BTF_KIND_PTR;
-    break;
-  case dwarf::DW_TAG_const_type:
-    Kind = BTF::BTF_KIND_CONST;
-    break;
-  case dwarf::DW_TAG_volatile_type:
-    Kind = BTF::BTF_KIND_VOLATILE;
-    break;
-  case dwarf::DW_TAG_typedef:
-    Kind = BTF::BTF_KIND_TYPEDEF;
-    break;
-  case dwarf::DW_TAG_restrict_type:
-    Kind = BTF::BTF_KIND_RESTRICT;
-    break;
-  default:
-    llvm_unreachable("Unknown DIDerivedType Tag");
-  }
-  BTFType.Info = Kind << 24;
-}
-
-void BTFTypeDerived::completeType(BTFDebug &BDebug) {
-  BTFType.NameOff = BDebug.addString(DTy->getName());
-
-  // The base type for PTR/CONST/VOLATILE could be void.
-  const DIType *ResolvedType = DTy->getBaseType().resolve();
-  if (!ResolvedType) {
-    assert((Kind == BTF::BTF_KIND_PTR || Kind == BTF::BTF_KIND_CONST ||
-            Kind == BTF::BTF_KIND_VOLATILE) &&
-           "Invalid null basetype");
-    BTFType.Type = 0;
-  } else {
-    BTFType.Type = BDebug.getTypeId(ResolvedType);
-  }
-}
-
-void BTFTypeDerived::emitType(MCStreamer &OS) { BTFTypeBase::emitType(OS); }
-
-/// Represent a struct/union forward declaration.
-BTFTypeFwd::BTFTypeFwd(StringRef Name) : Name(Name) {
-  Kind = BTF::BTF_KIND_FWD;
-  BTFType.Info = Kind << 24;
-  BTFType.Type = 0;
-}
-
-void BTFTypeFwd::completeType(BTFDebug &BDebug) {
-  BTFType.NameOff = BDebug.addString(Name);
-}
-
-void BTFTypeFwd::emitType(MCStreamer &OS) { BTFTypeBase::emitType(OS); }
-
-BTFTypeInt::BTFTypeInt(uint32_t Encoding, uint32_t SizeInBits,
-                       uint32_t OffsetInBits, StringRef TypeName)
-    : Name(TypeName) {
-  // Translate IR int encoding to BTF int encoding.
-  uint8_t BTFEncoding;
-  switch (Encoding) {
-  case dwarf::DW_ATE_boolean:
-    BTFEncoding = BTF::INT_BOOL;
-    break;
-  case dwarf::DW_ATE_signed:
-  case dwarf::DW_ATE_signed_char:
-    BTFEncoding = BTF::INT_SIGNED;
-    break;
-  case dwarf::DW_ATE_unsigned:
-  case dwarf::DW_ATE_unsigned_char:
-    BTFEncoding = 0;
-    break;
-  default:
-    llvm_unreachable("Unknown BTFTypeInt Encoding");
-  }
-
-  Kind = BTF::BTF_KIND_INT;
-  BTFType.Info = Kind << 24;
-  BTFType.Size = roundupToBytes(SizeInBits);
-  IntVal = (BTFEncoding << 24) | OffsetInBits << 16 | SizeInBits;
-}
-
-void BTFTypeInt::completeType(BTFDebug &BDebug) {
-  BTFType.NameOff = BDebug.addString(Name);
-}
-
-void BTFTypeInt::emitType(MCStreamer &OS) {
-  BTFTypeBase::emitType(OS);
-  OS.AddComment("0x" + Twine::utohexstr(IntVal));
-  OS.EmitIntValue(IntVal, 4);
-}
-
-BTFTypeEnum::BTFTypeEnum(const DICompositeType *ETy, uint32_t VLen) : ETy(ETy) {
-  Kind = BTF::BTF_KIND_ENUM;
-  BTFType.Info = Kind << 24 | VLen;
-  BTFType.Size = roundupToBytes(ETy->getSizeInBits());
-}
-
-void BTFTypeEnum::completeType(BTFDebug &BDebug) {
-  BTFType.NameOff = BDebug.addString(ETy->getName());
-
-  DINodeArray Elements = ETy->getElements();
-  for (const auto Element : Elements) {
-    const auto *Enum = cast<DIEnumerator>(Element);
-
-    struct BTF::BTFEnum BTFEnum;
-    BTFEnum.NameOff = BDebug.addString(Enum->getName());
-    // BTF enum value is 32bit, enforce it.
-    BTFEnum.Val = static_cast<uint32_t>(Enum->getValue());
-    EnumValues.push_back(BTFEnum);
-  }
-}
-
-void BTFTypeEnum::emitType(MCStreamer &OS) {
-  BTFTypeBase::emitType(OS);
-  for (const auto &Enum : EnumValues) {
-    OS.EmitIntValue(Enum.NameOff, 4);
-    OS.EmitIntValue(Enum.Val, 4);
-  }
-}
-
-BTFTypeArray::BTFTypeArray(const DICompositeType *ATy) : ATy(ATy) {
-  Kind = BTF::BTF_KIND_ARRAY;
-  BTFType.Info = Kind << 24;
-}
-
-/// Represent a BTF array. BTF does not record array dimensions,
-/// so conceptually a BTF array is a one-dimensional array.
-void BTFTypeArray::completeType(BTFDebug &BDebug) {
-  BTFType.NameOff = BDebug.addString(ATy->getName());
-  BTFType.Size = 0;
-
-  auto *BaseType = ATy->getBaseType().resolve();
-  ArrayInfo.ElemType = BDebug.getTypeId(BaseType);
-
-  // The IR does not really have a type for the index.
-  // A special type for array index should have been
-  // created during initial type traversal. Just
-  // retrieve that type id.
-  ArrayInfo.IndexType = BDebug.getArrayIndexTypeId();
-
-  // Get the number of array elements.
-  // If the array size is 0, set the number of elements as 0.
-  // Otherwise, recursively traverse the base types to
-  // find the element size. The number of elements is
-  // the totoal array size in bits divided by
-  // element size in bits.
-  uint64_t ArraySizeInBits = ATy->getSizeInBits();
-  if (!ArraySizeInBits) {
-    ArrayInfo.Nelems = 0;
-  } else {
-    uint32_t BaseTypeSize = BaseType->getSizeInBits();
-    while (!BaseTypeSize) {
-      const auto *DDTy = cast<DIDerivedType>(BaseType);
-      BaseType = DDTy->getBaseType().resolve();
-      assert(BaseType);
-      BaseTypeSize = BaseType->getSizeInBits();
-    }
-    ArrayInfo.Nelems = ATy->getSizeInBits() / BaseTypeSize;
-  }
-}
-
-void BTFTypeArray::emitType(MCStreamer &OS) {
-  BTFTypeBase::emitType(OS);
-  OS.EmitIntValue(ArrayInfo.ElemType, 4);
-  OS.EmitIntValue(ArrayInfo.IndexType, 4);
-  OS.EmitIntValue(ArrayInfo.Nelems, 4);
-}
-
-/// Represent either a struct or a union.
-BTFTypeStruct::BTFTypeStruct(const DICompositeType *STy, bool IsStruct,
-                             uint32_t Vlen)
-    : STy(STy) {
-  Kind = IsStruct ? BTF::BTF_KIND_STRUCT : BTF::BTF_KIND_UNION;
-  BTFType.Size = roundupToBytes(STy->getSizeInBits());
-  BTFType.Info = (Kind << 24) | Vlen;
-}
-
-void BTFTypeStruct::completeType(BTFDebug &BDebug) {
-  BTFType.NameOff = BDebug.addString(STy->getName());
-
-  // Add struct/union members.
-  // If the member is a bitfield, get the corresponding int type
-  // specially created to represent the bitfield. Otherwise,
-  // the member type is the base type of this member.
-  //
-  // FIXME: The real bitfield base type is lost. There
-  // is discussion to define a different type kind for
-  // bitfield in order to preserve its base type.
-  // Revisit this if the new kind or new mechanism is available.
-  const DINodeArray Elements = STy->getElements();
-  for (const auto *Element : Elements) {
-    struct BTF::BTFMember BTFMember;
-    const auto *DDTy = cast<DIDerivedType>(Element);
-
-    BTFMember.NameOff = BDebug.addString(DDTy->getName());
-    BTFMember.Offset = DDTy->getOffsetInBits();
-    if (DDTy->isBitField())
-      BTFMember.Type = BDebug.getBitFieldTypeId(DDTy);
-    else
-      BTFMember.Type = BDebug.getTypeId(DDTy->getBaseType().resolve());
-    Members.push_back(BTFMember);
-  }
-}
-
-void BTFTypeStruct::emitType(MCStreamer &OS) {
-  BTFTypeBase::emitType(OS);
-  for (const auto &Member : Members) {
-    OS.EmitIntValue(Member.NameOff, 4);
-    OS.EmitIntValue(Member.Type, 4);
-    OS.EmitIntValue(Member.Offset, 4);
-  }
-}
-
-/// The Func kind represents both subprogram and pointee of function
-/// pointers. If the FuncName is empty, it represents a pointee of function
-/// pointer. Otherwise, it represents a subprogram. The func arg names
-/// are empty for pointee of function pointer case, and are valid names
-/// for subprogram.
-BTFTypeFuncProto::BTFTypeFuncProto(
-    const DISubroutineType *STy, uint32_t VLen,
-    const std::unordered_map<uint32_t, StringRef> &FuncArgNames)
-    : STy(STy), FuncArgNames(FuncArgNames) {
-  Kind = BTF::BTF_KIND_FUNC_PROTO;
-  BTFType.Info = (Kind << 24) | VLen;
-}
-
-void BTFTypeFuncProto::completeType(BTFDebug &BDebug) {
-  DITypeRefArray Elements = STy->getTypeArray();
-  auto RetType = Elements[0].resolve();
-  BTFType.Type = RetType ? BDebug.getTypeId(RetType) : 0;
-  BTFType.NameOff = 0;
-
-  // For null parameter which is typically the last one
-  // to represent the vararg, encode the NameOff/Type to be 0.
-  for (unsigned I = 1, N = Elements.size(); I < N; ++I) {
-    struct BTF::BTFParam Param;
-    auto Element = Elements[I].resolve();
-    if (Element) {
-      Param.NameOff = BDebug.addString(FuncArgNames[I]);
-      Param.Type = BDebug.getTypeId(Element);
-    } else {
-      Param.NameOff = 0;
-      Param.Type = 0;
-    }
-    Parameters.push_back(Param);
-  }
-}
-
-void BTFTypeFuncProto::emitType(MCStreamer &OS) {
-  BTFTypeBase::emitType(OS);
-  for (const auto &Param : Parameters) {
-    OS.EmitIntValue(Param.NameOff, 4);
-    OS.EmitIntValue(Param.Type, 4);
-  }
-}
-
-BTFTypeFunc::BTFTypeFunc(StringRef FuncName, uint32_t ProtoTypeId)
-    : Name(FuncName) {
-  Kind = BTF::BTF_KIND_FUNC;
-  BTFType.Info = Kind << 24;
-  BTFType.Type = ProtoTypeId;
-}
-
-void BTFTypeFunc::completeType(BTFDebug &BDebug) {
-  BTFType.NameOff = BDebug.addString(Name);
-}
-
-void BTFTypeFunc::emitType(MCStreamer &OS) { BTFTypeBase::emitType(OS); }
-
-uint32_t BTFStringTable::addString(StringRef S) {
-  // Check whether the string already exists.
-  for (auto &OffsetM : OffsetToIdMap) {
-    if (Table[OffsetM.second] == S)
-      return OffsetM.first;
-  }
-  // Not find, add to the string table.
-  uint32_t Offset = Size;
-  OffsetToIdMap[Offset] = Table.size();
-  Table.push_back(S);
-  Size += S.size() + 1;
-  return Offset;
-}
-
-BTFDebug::BTFDebug(AsmPrinter *AP)
-    : DebugHandlerBase(AP), OS(*Asm->OutStreamer), SkipInstruction(false),
-      LineInfoGenerated(false), SecNameOff(0), ArrayIndexTypeId(0) {
-  addString("\0");
-}
-
-void BTFDebug::addType(std::unique_ptr<BTFTypeBase> TypeEntry,
-                       const DIType *Ty) {
-  TypeEntry->setId(TypeEntries.size() + 1);
-  DIToIdMap[Ty] = TypeEntry->getId();
-  TypeEntries.push_back(std::move(TypeEntry));
-}
-
-uint32_t BTFDebug::addType(std::unique_ptr<BTFTypeBase> TypeEntry) {
-  TypeEntry->setId(TypeEntries.size() + 1);
-  uint32_t Id = TypeEntry->getId();
-  TypeEntries.push_back(std::move(TypeEntry));
-  return Id;
-}
-
-void BTFDebug::visitBasicType(const DIBasicType *BTy) {
-  // Only int types are supported in BTF.
-  uint32_t Encoding = BTy->getEncoding();
-  if (Encoding != dwarf::DW_ATE_boolean && Encoding != dwarf::DW_ATE_signed &&
-      Encoding != dwarf::DW_ATE_signed_char &&
-      Encoding != dwarf::DW_ATE_unsigned &&
-      Encoding != dwarf::DW_ATE_unsigned_char)
-    return;
-
-  // Create a BTF type instance for this DIBasicType and put it into
-  // DIToIdMap for cross-type reference check.
-  auto TypeEntry = llvm::make_unique<BTFTypeInt>(
-      Encoding, BTy->getSizeInBits(), BTy->getOffsetInBits(), BTy->getName());
-  addType(std::move(TypeEntry), BTy);
-}
-
-/// Handle subprogram or subroutine types.
-void BTFDebug::visitSubroutineType(
-    const DISubroutineType *STy, bool ForSubprog,
-    const std::unordered_map<uint32_t, StringRef> &FuncArgNames,
-    uint32_t &TypeId) {
-  DITypeRefArray Elements = STy->getTypeArray();
-  uint32_t VLen = Elements.size() - 1;
-  if (VLen > BTF::MAX_VLEN)
-    return;
-
-  // Subprogram has a valid non-zero-length name, and the pointee of
-  // a function pointer has an empty name. The subprogram type will
-  // not be added to DIToIdMap as it should not be referenced by
-  // any other types.
-  auto TypeEntry = llvm::make_unique<BTFTypeFuncProto>(STy, VLen, FuncArgNames);
-  if (ForSubprog)
-    TypeId = addType(std::move(TypeEntry)); // For subprogram
-  else
-    addType(std::move(TypeEntry), STy); // For func ptr
-
-  // Visit return type and func arg types.
-  for (const auto Element : Elements) {
-    visitTypeEntry(Element.resolve());
-  }
-}
-
-/// Handle structure/union types.
-void BTFDebug::visitStructType(const DICompositeType *CTy, bool IsStruct) {
-  const DINodeArray Elements = CTy->getElements();
-  uint32_t VLen = Elements.size();
-  if (VLen > BTF::MAX_VLEN)
-    return;
-
-  auto TypeEntry = llvm::make_unique<BTFTypeStruct>(CTy, IsStruct, VLen);
-  addType(std::move(TypeEntry), CTy);
-
-  // Visit all struct members.
-  for (const auto *Element : Elements)
-    visitTypeEntry(cast<DIDerivedType>(Element));
-}
-
-void BTFDebug::visitArrayType(const DICompositeType *CTy) {
-  auto TypeEntry = llvm::make_unique<BTFTypeArray>(CTy);
-  addType(std::move(TypeEntry), CTy);
-
-  // The IR does not have a type for array index while BTF wants one.
-  // So create an array index type if there is none.
-  if (!ArrayIndexTypeId) {
-    auto TypeEntry = llvm::make_unique<BTFTypeInt>(dwarf::DW_ATE_unsigned, 32,
-                                                   0, "__ARRAY_SIZE_TYPE__");
-    ArrayIndexTypeId = addType(std::move(TypeEntry));
-  }
-
-  // Visit array element type.
-  visitTypeEntry(CTy->getBaseType().resolve());
-}
-
-void BTFDebug::visitEnumType(const DICompositeType *CTy) {
-  DINodeArray Elements = CTy->getElements();
-  uint32_t VLen = Elements.size();
-  if (VLen > BTF::MAX_VLEN)
-    return;
-
-  auto TypeEntry = llvm::make_unique<BTFTypeEnum>(CTy, VLen);
-  addType(std::move(TypeEntry), CTy);
-  // No need to visit base type as BTF does not encode it.
-}
-
-/// Handle structure/union forward declarations.
-void BTFDebug::visitFwdDeclType(const DICompositeType *CTy) {
-  auto TypeEntry = llvm::make_unique<BTFTypeFwd>(CTy->getName());
-  addType(std::move(TypeEntry), CTy);
-}
-
-/// Handle structure, union, array and enumeration types.
-void BTFDebug::visitCompositeType(const DICompositeType *CTy) {
-  auto Tag = CTy->getTag();
-  if (Tag == dwarf::DW_TAG_structure_type || Tag == dwarf::DW_TAG_union_type) {
-    // Handle forward declaration differently as it does not have members.
-    if (CTy->isForwardDecl())
-      visitFwdDeclType(CTy);
-    else
-      visitStructType(CTy, Tag == dwarf::DW_TAG_structure_type);
-  } else if (Tag == dwarf::DW_TAG_array_type)
-    visitArrayType(CTy);
-  else if (Tag == dwarf::DW_TAG_enumeration_type)
-    visitEnumType(CTy);
-}
-
-/// Handle pointer, typedef, const, volatile, restrict and member types.
-void BTFDebug::visitDerivedType(const DIDerivedType *DTy) {
-  unsigned Tag = DTy->getTag();
-
-  if (Tag == dwarf::DW_TAG_pointer_type || Tag == dwarf::DW_TAG_typedef ||
-      Tag == dwarf::DW_TAG_const_type || Tag == dwarf::DW_TAG_volatile_type ||
-      Tag == dwarf::DW_TAG_restrict_type) {
-    auto TypeEntry = llvm::make_unique<BTFTypeDerived>(DTy, Tag);
-    addType(std::move(TypeEntry), DTy);
-  } else if (Tag != dwarf::DW_TAG_member) {
-    return;
-  } else {
-    // Special process member bitfield type.
-    // For bitfield, recursively find the base type and then
-    // construct a special int type with correct bitfield size.
-    // Install the type id in BitFieldTypeMap for later retrieval.
-    //
-    // FIXME: The real bitfield base type is lost. There
-    // is discussion to define a different type kind for
-    // bitfield in order to preserve its base type.
-    // Revisit this if the new kind or new mechanism is available.
-    if (DTy->isBitField()) {
-      const DIType *ResolvedTy = DTy->getBaseType().resolve();
-
-      while (ResolvedTy) {
-        if (const auto *DerivedTy = dyn_cast<DIDerivedType>(ResolvedTy)) {
-          ResolvedTy = DerivedTy->getBaseType().resolve();
-        } else if (const auto *CompositeTy =
-                       dyn_cast<DICompositeType>(ResolvedTy)) {
-          assert(CompositeTy->getTag() == dwarf::DW_TAG_enumeration_type &&
-                 "Invalid member composite type");
-          ResolvedTy = CompositeTy->getBaseType().resolve();
-        } else
-          break;
-      }
-
-      const auto *BaseTy = cast<DIBasicType>(ResolvedTy);
-      auto TypeEntry = llvm::make_unique<BTFTypeInt>(
-          BaseTy->getEncoding(), DTy->getSizeInBits(), 0, BaseTy->getName());
-      BitFieldTypeMap[DTy] = addType(std::move(TypeEntry));
-      return;
-    }
-  }
-
-  // Visit base type of pointer, typedef, const, volatile, restrict or
-  // non-bitfield member type.
-  visitTypeEntry(DTy->getBaseType().resolve());
-}
-
-void BTFDebug::visitTypeEntry(const DIType *Ty) {
-  if (!Ty || DIToIdMap.find(Ty) != DIToIdMap.end())
-    return;
-
-  uint32_t TypeId;
-  if (const auto *BTy = dyn_cast<DIBasicType>(Ty))
-    visitBasicType(BTy);
-  else if (const auto *STy = dyn_cast<DISubroutineType>(Ty))
-    visitSubroutineType(STy, false, std::unordered_map<uint32_t, StringRef>(),
-                        TypeId);
-  else if (const auto *CTy = dyn_cast<DICompositeType>(Ty))
-    visitCompositeType(CTy);
-  else if (const auto *DTy = dyn_cast<DIDerivedType>(Ty))
-    visitDerivedType(DTy);
-  else
-    llvm_unreachable("Unknown DIType");
-}
-
-/// Read file contents from the actual file or from the source
-std::string BTFDebug::populateFileContent(const DISubprogram *SP) {
-  auto File = SP->getFile();
-  std::string FileName;
-
-  if (File->getDirectory().size())
-    FileName = File->getDirectory().str() + "/" + File->getFilename().str();
-  else
-    FileName = File->getFilename();
-
-  // No need to populate the contends if it has been populated!
-  if (FileContent.find(FileName) != FileContent.end())
-    return FileName;
-
-  std::vector<std::string> Content;
-  std::string Line;
-  Content.push_back(Line); // Line 0 for empty string
-
-  auto Source = File->getSource();
-  if (Source) {
-    std::istringstream InputString(Source.getValue());
-    while (std::getline(InputString, Line))
-      Content.push_back(Line);
-  } else {
-    std::ifstream InputFile(FileName);
-    while (std::getline(InputFile, Line))
-      Content.push_back(Line);
-  }
-
-  FileContent[FileName] = Content;
-  return FileName;
-}
-
-void BTFDebug::constructLineInfo(const DISubprogram *SP, MCSymbol *Label,
-                                 uint32_t Line, uint32_t Column) {
-  std::string FileName = populateFileContent(SP);
-  BTFLineInfo LineInfo;
-
-  LineInfo.Label = Label;
-  LineInfo.FileNameOff = addString(FileName);
-  // If file content is not available, let LineOff = 0.
-  if (Line < FileContent[FileName].size())
-    LineInfo.LineOff = addString(FileContent[FileName][Line]);
-  else
-    LineInfo.LineOff = 0;
-  LineInfo.LineNum = Line;
-  LineInfo.ColumnNum = Column;
-  LineInfoTable[SecNameOff].push_back(LineInfo);
-}
-
-void BTFDebug::emitCommonHeader() {
-  OS.AddComment("0x" + Twine::utohexstr(BTF::MAGIC));
-  OS.EmitIntValue(BTF::MAGIC, 2);
-  OS.EmitIntValue(BTF::VERSION, 1);
-  OS.EmitIntValue(0, 1);
-}
-
-void BTFDebug::emitBTFSection() {
-  MCContext &context = OS.getContext();
-  OS.SwitchSection(context.getObjectFileInfo()->getBTFSection());
-
-  // Emit header.
-  emitCommonHeader();
-  OS.EmitIntValue(BTF::HeaderSize, 4);
-
-  uint32_t TypeLen = 0, StrLen;
-  for (const auto &TypeEntry : TypeEntries)
-    TypeLen += TypeEntry->getSize();
-  StrLen = StringTable.getSize();
-
-  OS.EmitIntValue(0, 4);
-  OS.EmitIntValue(TypeLen, 4);
-  OS.EmitIntValue(TypeLen, 4);
-  OS.EmitIntValue(StrLen, 4);
-
-  // Emit type table.
-  for (const auto &TypeEntry : TypeEntries)
-    TypeEntry->emitType(OS);
-
-  // Emit string table.
-  uint32_t StringOffset = 0;
-  for (const auto &S : StringTable.getTable()) {
-    OS.AddComment("string offset=" + std::to_string(StringOffset));
-    OS.EmitBytes(S);
-    OS.EmitBytes(StringRef("\0", 1));
-    StringOffset += S.size() + 1;
-  }
-}
-
-void BTFDebug::emitBTFExtSection() {
-  MCContext &context = OS.getContext();
-  OS.SwitchSection(context.getObjectFileInfo()->getBTFExtSection());
-
-  // Emit header.
-  emitCommonHeader();
-  OS.EmitIntValue(BTF::ExtHeaderSize, 4);
-
-  // Account for FuncInfo/LineInfo record size as well.
-  uint32_t FuncLen = 4, LineLen = 4;
-  for (const auto &FuncSec : FuncInfoTable) {
-    FuncLen += BTF::SecFuncInfoSize;
-    FuncLen += FuncSec.second.size() * BTF::BPFFuncInfoSize;
-  }
-  for (const auto &LineSec : LineInfoTable) {
-    LineLen += BTF::SecLineInfoSize;
-    LineLen += LineSec.second.size() * BTF::BPFLineInfoSize;
-  }
-
-  OS.EmitIntValue(0, 4);
-  OS.EmitIntValue(FuncLen, 4);
-  OS.EmitIntValue(FuncLen, 4);
-  OS.EmitIntValue(LineLen, 4);
-
-  // Emit func_info table.
-  OS.AddComment("FuncInfo");
-  OS.EmitIntValue(BTF::BPFFuncInfoSize, 4);
-  for (const auto &FuncSec : FuncInfoTable) {
-    OS.AddComment("FuncInfo section string offset=" +
-                  std::to_string(FuncSec.first));
-    OS.EmitIntValue(FuncSec.first, 4);
-    OS.EmitIntValue(FuncSec.second.size(), 4);
-    for (const auto &FuncInfo : FuncSec.second) {
-      Asm->EmitLabelReference(FuncInfo.Label, 4);
-      OS.EmitIntValue(FuncInfo.TypeId, 4);
-    }
-  }
-
-  // Emit line_info table.
-  OS.AddComment("LineInfo");
-  OS.EmitIntValue(BTF::BPFLineInfoSize, 4);
-  for (const auto &LineSec : LineInfoTable) {
-    OS.AddComment("LineInfo section string offset=" +
-                  std::to_string(LineSec.first));
-    OS.EmitIntValue(LineSec.first, 4);
-    OS.EmitIntValue(LineSec.second.size(), 4);
-    for (const auto &LineInfo : LineSec.second) {
-      Asm->EmitLabelReference(LineInfo.Label, 4);
-      OS.EmitIntValue(LineInfo.FileNameOff, 4);
-      OS.EmitIntValue(LineInfo.LineOff, 4);
-      OS.AddComment("Line " + std::to_string(LineInfo.LineNum) + " Col " +
-                    std::to_string(LineInfo.ColumnNum));
-      OS.EmitIntValue(LineInfo.LineNum << 10 | LineInfo.ColumnNum, 4);
-    }
-  }
-}
-
-void BTFDebug::beginFunctionImpl(const MachineFunction *MF) {
-  auto *SP = MF->getFunction().getSubprogram();
-  auto *Unit = SP->getUnit();
-
-  if (Unit->getEmissionKind() == DICompileUnit::NoDebug) {
-    SkipInstruction = true;
-    return;
-  }
-  SkipInstruction = false;
-
-  // Collect all types locally referenced in this function.
-  // Use RetainedNodes so we can collect all argument names
-  // even if the argument is not used.
-  std::unordered_map<uint32_t, StringRef> FuncArgNames;
-  for (const DINode *DN : SP->getRetainedNodes()) {
-    if (const auto *DV = dyn_cast<DILocalVariable>(DN)) {
-      visitTypeEntry(DV->getType().resolve());
-
-      // Collect function arguments for subprogram func type.
-      uint32_t Arg = DV->getArg();
-      if (Arg)
-        FuncArgNames[Arg] = DV->getName();
-    }
-  }
-
-  // Construct subprogram func proto type.
-  uint32_t ProtoTypeId;
-  visitSubroutineType(SP->getType(), true, FuncArgNames, ProtoTypeId);
-
-  // Construct subprogram func type
-  auto FuncTypeEntry =
-      llvm::make_unique<BTFTypeFunc>(SP->getName(), ProtoTypeId);
-  uint32_t FuncTypeId = addType(std::move(FuncTypeEntry));
-
-  // Construct funcinfo and the first lineinfo for the function.
-  MCSymbol *FuncLabel = Asm->getFunctionBegin();
-  BTFFuncInfo FuncInfo;
-  FuncInfo.Label = FuncLabel;
-  FuncInfo.TypeId = FuncTypeId;
-  if (FuncLabel->isInSection()) {
-    MCSection &Section = FuncLabel->getSection();
-    const MCSectionELF *SectionELF = dyn_cast<MCSectionELF>(&Section);
-    assert(SectionELF && "Null section for Function Label");
-    SecNameOff = addString(SectionELF->getSectionName());
-  } else {
-    SecNameOff = addString(".text");
-  }
-  FuncInfoTable[SecNameOff].push_back(FuncInfo);
-}
-
-void BTFDebug::endFunctionImpl(const MachineFunction *MF) {
-  SkipInstruction = false;
-  LineInfoGenerated = false;
-  SecNameOff = 0;
-}
-
-void BTFDebug::beginInstruction(const MachineInstr *MI) {
-  DebugHandlerBase::beginInstruction(MI);
-
-  if (SkipInstruction || MI->isMetaInstruction() ||
-      MI->getFlag(MachineInstr::FrameSetup))
-    return;
-
-  // Skip this instruction if no DebugLoc or the DebugLoc
-  // is the same as the previous instruction.
-  const DebugLoc &DL = MI->getDebugLoc();
-  if (!DL || PrevInstLoc == DL) {
-    // This instruction will be skipped, no LineInfo has
-    // been generated, construct one based on function signature.
-    if (LineInfoGenerated == false) {
-      auto *S = MI->getMF()->getFunction().getSubprogram();
-      MCSymbol *FuncLabel = Asm->getFunctionBegin();
-      constructLineInfo(S, FuncLabel, S->getLine(), 0);
-      LineInfoGenerated = true;
-    }
-
-    return;
-  }
-
-  // Create a temporary label to remember the insn for lineinfo.
-  MCSymbol *LineSym = OS.getContext().createTempSymbol();
-  OS.EmitLabel(LineSym);
-
-  // Construct the lineinfo.
-  auto SP = DL.get()->getScope()->getSubprogram();
-  constructLineInfo(SP, LineSym, DL.getLine(), DL.getCol());
-
-  LineInfoGenerated = true;
-  PrevInstLoc = DL;
-}
-
-void BTFDebug::endModule() {
-  // Collect all types referenced by globals.
-  const Module *M = MMI->getModule();
-  for (const DICompileUnit *CUNode : M->debug_compile_units()) {
-    for (const auto *GVE : CUNode->getGlobalVariables()) {
-      DIGlobalVariable *GV = GVE->getVariable();
-      visitTypeEntry(GV->getType().resolve());
-    }
-  }
-
-  // Complete BTF type cross refereences.
-  for (const auto &TypeEntry : TypeEntries)
-    TypeEntry->completeType(*this);
-
-  // Emit BTF sections.
-  emitBTFSection();
-  emitBTFExtSection();
-}
diff --git a/llvm/lib/CodeGen/AsmPrinter/BTFDebug.h b/llvm/lib/CodeGen/AsmPrinter/BTFDebug.h
deleted file mode 100644
index 736ef69..0000000
--- a/llvm/lib/CodeGen/AsmPrinter/BTFDebug.h
+++ /dev/null
@@ -1,293 +0,0 @@
-//===- llvm/lib/CodeGen/AsmPrinter/BTFDebug.h -------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-///
-/// \file
-/// This file contains support for writing BTF debug info.
-///
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_BTFDEBUG_H
-#define LLVM_LIB_CODEGEN_ASMPRINTER_BTFDEBUG_H
-
-#include "DebugHandlerBase.h"
-#include "llvm/ADT/StringMap.h"
-#include "llvm/BinaryFormat/BTF.h"
-#include <unordered_map>
-
-namespace llvm {
-
-class AsmPrinter;
-class BTFDebug;
-class DIType;
-class MCStreamer;
-class MCSymbol;
-class MachineFunction;
-
-/// The base class for BTF type generation.
-class BTFTypeBase {
-protected:
-  uint8_t Kind;
-  uint32_t Id;
-  struct BTF::CommonType BTFType;
-
-public:
-  virtual ~BTFTypeBase() = default;
-  void setId(uint32_t Id) { this->Id = Id; }
-  uint32_t getId() { return Id; }
-  uint32_t roundupToBytes(uint32_t NumBits) { return (NumBits + 7) >> 3; }
-  /// Get the size of this BTF type entry.
-  virtual uint32_t getSize() { return BTF::CommonTypeSize; }
-  /// Complete BTF type generation after all related DebugInfo types
-  /// have been visited so their BTF type id's are available
-  /// for cross referece.
-  virtual void completeType(BTFDebug &BDebug) {}
-  /// Emit types for this BTF type entry.
-  virtual void emitType(MCStreamer &OS);
-};
-
-/// Handle several derived types include pointer, const,
-/// volatile, typedef and restrict.
-class BTFTypeDerived : public BTFTypeBase {
-  const DIDerivedType *DTy;
-
-public:
-  BTFTypeDerived(const DIDerivedType *Ty, unsigned Tag);
-  void completeType(BTFDebug &BDebug);
-  void emitType(MCStreamer &OS);
-};
-
-/// Handle struct or union forward declaration.
-class BTFTypeFwd : public BTFTypeBase {
-  StringRef Name;
-
-public:
-  BTFTypeFwd(StringRef Name);
-  void completeType(BTFDebug &BDebug);
-  void emitType(MCStreamer &OS);
-};
-
-/// Handle int type.
-class BTFTypeInt : public BTFTypeBase {
-  StringRef Name;
-  uint32_t IntVal; ///< Encoding, offset, bits
-
-public:
-  BTFTypeInt(uint32_t Encoding, uint32_t SizeInBits, uint32_t OffsetInBits,
-             StringRef TypeName);
-  uint32_t getSize() { return BTFTypeBase::getSize() + sizeof(uint32_t); }
-  void completeType(BTFDebug &BDebug);
-  void emitType(MCStreamer &OS);
-};
-
-/// Handle enumerate type.
-class BTFTypeEnum : public BTFTypeBase {
-  const DICompositeType *ETy;
-  std::vector<struct BTF::BTFEnum> EnumValues;
-
-public:
-  BTFTypeEnum(const DICompositeType *ETy, uint32_t NumValues);
-  uint32_t getSize() {
-    return BTFTypeBase::getSize() + EnumValues.size() * BTF::BTFEnumSize;
-  }
-  void completeType(BTFDebug &BDebug);
-  void emitType(MCStreamer &OS);
-};
-
-/// Handle array type.
-class BTFTypeArray : public BTFTypeBase {
-  const DICompositeType *ATy;
-  struct BTF::BTFArray ArrayInfo;
-
-public:
-  BTFTypeArray(const DICompositeType *ATy);
-  uint32_t getSize() { return BTFTypeBase::getSize() + BTF::BTFArraySize; }
-  void completeType(BTFDebug &BDebug);
-  void emitType(MCStreamer &OS);
-};
-
-/// Handle struct/union type.
-class BTFTypeStruct : public BTFTypeBase {
-  const DICompositeType *STy;
-  std::vector<struct BTF::BTFMember> Members;
-
-public:
-  BTFTypeStruct(const DICompositeType *STy, bool IsStruct, uint32_t NumMembers);
-  uint32_t getSize() {
-    return BTFTypeBase::getSize() + Members.size() * BTF::BTFMemberSize;
-  }
-  void completeType(BTFDebug &BDebug);
-  void emitType(MCStreamer &OS);
-};
-
-/// Handle function pointer.
-class BTFTypeFuncProto : public BTFTypeBase {
-  const DISubroutineType *STy;
-  std::unordered_map<uint32_t, StringRef> FuncArgNames;
-  std::vector<struct BTF::BTFParam> Parameters;
-
-public:
-  BTFTypeFuncProto(const DISubroutineType *STy, uint32_t NumParams,
-                   const std::unordered_map<uint32_t, StringRef> &FuncArgNames);
-  uint32_t getSize() {
-    return BTFTypeBase::getSize() + Parameters.size() * BTF::BTFParamSize;
-  }
-  void completeType(BTFDebug &BDebug);
-  void emitType(MCStreamer &OS);
-};
-
-/// Handle subprogram
-class BTFTypeFunc : public BTFTypeBase {
-  StringRef Name;
-
-public:
-  BTFTypeFunc(StringRef FuncName, uint32_t ProtoTypeId);
-  uint32_t getSize() { return BTFTypeBase::getSize(); }
-  void completeType(BTFDebug &BDebug);
-  void emitType(MCStreamer &OS);
-};
-
-/// String table.
-class BTFStringTable {
-  /// String table size in bytes.
-  uint32_t Size;
-  /// A mapping from string table offset to the index
-  /// of the Table. It is used to avoid putting
-  /// duplicated strings in the table.
-  std::unordered_map<uint32_t, uint32_t> OffsetToIdMap;
-  /// A vector of strings to represent the string table.
-  std::vector<std::string> Table;
-
-public:
-  BTFStringTable() : Size(0) {}
-  uint32_t getSize() { return Size; }
-  std::vector<std::string> &getTable() { return Table; }
-  /// Add a string to the string table and returns its offset
-  /// in the table.
-  uint32_t addString(StringRef S);
-};
-
-/// Represent one func and its type id.
-struct BTFFuncInfo {
-  const MCSymbol *Label; ///< Func MCSymbol
-  uint32_t TypeId;       ///< Type id referring to .BTF type section
-};
-
-/// Represent one line info.
-struct BTFLineInfo {
-  MCSymbol *Label;      ///< MCSymbol identifying insn for the lineinfo
-  uint32_t FileNameOff; ///< file name offset in the .BTF string table
-  uint32_t LineOff;     ///< line offset in the .BTF string table
-  uint32_t LineNum;     ///< the line number
-  uint32_t ColumnNum;   ///< the column number
-};
-
-/// Collect and emit BTF information.
-class BTFDebug : public DebugHandlerBase {
-  MCStreamer &OS;
-  bool SkipInstruction;
-  bool LineInfoGenerated;
-  uint32_t SecNameOff;
-  uint32_t ArrayIndexTypeId;
-  BTFStringTable StringTable;
-  std::vector<std::unique_ptr<BTFTypeBase>> TypeEntries;
-  std::unordered_map<const DIType *, uint32_t> DIToIdMap;
-  std::unordered_map<const DIType *, uint32_t> BitFieldTypeMap;
-  std::unordered_map<uint32_t, std::vector<BTFFuncInfo>> FuncInfoTable;
-  std::unordered_map<uint32_t, std::vector<BTFLineInfo>> LineInfoTable;
-  StringMap<std::vector<std::string>> FileContent;
-
-  /// Add types to TypeEntries.
-  /// @{
-  /// Add types to TypeEntries and DIToIdMap.
-  void addType(std::unique_ptr<BTFTypeBase> TypeEntry, const DIType *Ty);
-  /// Add types to TypeEntries only and return type id.
-  uint32_t addType(std::unique_ptr<BTFTypeBase> TypeEntry);
-  /// @}
-
-  /// IR type visiting functions.
-  /// @{
-  void visitTypeEntry(const DIType *Ty);
-  void visitBasicType(const DIBasicType *BTy);
-  void visitSubroutineType(
-      const DISubroutineType *STy, bool ForSubprog,
-      const std::unordered_map<uint32_t, StringRef> &FuncArgNames,
-      uint32_t &TypeId);
-  void visitFwdDeclType(const DICompositeType *CTy);
-  void visitCompositeType(const DICompositeType *CTy);
-  void visitStructType(const DICompositeType *STy, bool IsStruct);
-  void visitArrayType(const DICompositeType *ATy);
-  void visitEnumType(const DICompositeType *ETy);
-  void visitDerivedType(const DIDerivedType *DTy);
-  /// @}
-
-  /// Get the file content for the subprogram. Certain lines of the file
-  /// later may be put into string table and referenced by line info.
-  std::string populateFileContent(const DISubprogram *SP);
-
-  /// Construct a line info.
-  void constructLineInfo(const DISubprogram *SP, MCSymbol *Label, uint32_t Line,
-                         uint32_t Column);
-
-  /// Emit common header of .BTF and .BTF.ext sections.
-  void emitCommonHeader();
-
-  /// Emit the .BTF section.
-  void emitBTFSection();
-
-  /// Emit the .BTF.ext section.
-  void emitBTFExtSection();
-
-protected:
-  /// Gather pre-function debug information.
-  void beginFunctionImpl(const MachineFunction *MF) override;
-
-  /// Post process after all instructions in this function are processed.
-  void endFunctionImpl(const MachineFunction *MF) override;
-
-public:
-  BTFDebug(AsmPrinter *AP);
-
-  /// Get the special array index type id.
-  uint32_t getArrayIndexTypeId() {
-    assert(ArrayIndexTypeId);
-    return ArrayIndexTypeId;
-  }
-
-  /// Add string to the string table.
-  size_t addString(StringRef S) { return StringTable.addString(S); }
-
-  /// Get the type id for a particular DIType.
-  uint32_t getTypeId(const DIType *Ty) {
-    assert(Ty && "Invalid null Type");
-    assert(DIToIdMap.find(Ty) != DIToIdMap.end() &&
-           "DIType not added in the BDIToIdMap");
-    return DIToIdMap[Ty];
-  }
-
-  /// Get the bitfield type id. If the struct/union member
-  /// is a bitfield, a special type is created for it.
-  uint32_t getBitFieldTypeId(const DIDerivedType *Ty) {
-    assert(Ty && "Invalid null Type");
-    assert(BitFieldTypeMap.find(Ty) != BitFieldTypeMap.end() &&
-           "DIDerivedType not added in the BitFieldTypeMap");
-    return BitFieldTypeMap[Ty];
-  }
-
-  void setSymbolSize(const MCSymbol *Symbol, uint64_t Size) override {}
-
-  /// Process beginning of an instruction.
-  void beginInstruction(const MachineInstr *MI) override;
-
-  /// Complete all the types and emit the BTF sections.
-  void endModule() override;
-};
-
-} // end namespace llvm
-
-#endif // LLVM_LIB_CODEGEN_ASMPRINTER_BTFDEBUG_H
diff --git a/llvm/lib/CodeGen/AsmPrinter/BTFDebugStub.cpp b/llvm/lib/CodeGen/AsmPrinter/BTFDebugStub.cpp
deleted file mode 100644
index be48768..0000000
--- a/llvm/lib/CodeGen/AsmPrinter/BTFDebugStub.cpp
+++ /dev/null
@@ -1,28 +0,0 @@
-//===- llvm/lib/CodeGen/AsmPrinter/BTFDebugStub.cpp -------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-///
-/// \file
-/// This file is a stub for BTF generation support. The real implementation
-/// is at BTFDebug.cpp which will be included if BPF target is built.
-///
-//===----------------------------------------------------------------------===//
-
-#include "DebugHandlerBase.h"
-
-namespace llvm {
-
-/// Stub class for emitting the BTF .
-class BTFDebug : public DebugHandlerBase {
-public:
-  BTFDebug(AsmPrinter *AP);
-};
-
-BTFDebug::BTFDebug(AsmPrinter *AP) : DebugHandlerBase(AP) {}
-
-} // end namespace llvm
diff --git a/llvm/lib/CodeGen/AsmPrinter/CMakeLists.txt b/llvm/lib/CodeGen/AsmPrinter/CMakeLists.txt
index c1f3f7b..3fb088a 100644
--- a/llvm/lib/CodeGen/AsmPrinter/CMakeLists.txt
+++ b/llvm/lib/CodeGen/AsmPrinter/CMakeLists.txt
@@ -1,14 +1,3 @@
-# Based on whether BPF target is built or not,
-# either BTFDebug.cpp or BTFDebugStub.cpp will be included,
-# but not both.
-set(LLVM_OPTIONAL_SOURCES "BTFDebug.cpp" "BTFDebugStub.cpp")
-list(FIND LLVM_TARGETS_TO_BUILD "BPF" idx)
-if( NOT idx LESS 0 )
-  set(BTFDebug_File "BTFDebug.cpp")
-else()
-  set(BTFDebug_File "BTFDebugStub.cpp")
-endif()
-
 add_llvm_library(LLVMAsmPrinter
   AccelTable.cpp
   AddressPool.cpp
@@ -35,7 +24,6 @@
   WinException.cpp
   CodeViewDebug.cpp
   WasmException.cpp
-  ${BTFDebug_File}
 
   DEPENDS
   intrinsics_gen
diff --git a/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp b/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp
index ee693aa..a362dd4 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp
@@ -8,7 +8,7 @@
 //===----------------------------------------------------------------------===//
 //
 // Common functionality for different debug information format backends.
-// LLVM currently supports DWARF, CodeView and BTF.
+// LLVM currently supports DWARF and CodeView.
 //
 //===----------------------------------------------------------------------===//
 
diff --git a/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.h b/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.h
index 7dcd561..cdf8dc7 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.h
+++ b/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.h
@@ -8,7 +8,7 @@
 //===----------------------------------------------------------------------===//
 //
 // Common functionality for different debug information format backends.
-// LLVM currently supports DWARF, CodeView and BTF.
+// LLVM currently supports DWARF and CodeView.
 //
 //===----------------------------------------------------------------------===//
 
diff --git a/llvm/lib/MC/MCObjectFileInfo.cpp b/llvm/lib/MC/MCObjectFileInfo.cpp
index d9d3c50..0513ba5 100644
--- a/llvm/lib/MC/MCObjectFileInfo.cpp
+++ b/llvm/lib/MC/MCObjectFileInfo.cpp
@@ -476,9 +476,6 @@
       Ctx->getELFSection(".eh_frame", EHSectionType, EHSectionFlags);
 
   StackSizesSection = Ctx->getELFSection(".stack_sizes", ELF::SHT_PROGBITS, 0);
-
-  BTFSection = Ctx->getELFSection(".BTF", ELF::SHT_PROGBITS, 0);
-  BTFExtSection = Ctx->getELFSection(".BTF.ext", ELF::SHT_PROGBITS, 0);
 }
 
 void MCObjectFileInfo::initCOFFMCObjectFileInfo(const Triple &T) {
diff --git a/llvm/test/DebugInfo/BTF/array-1d-char.ll b/llvm/test/DebugInfo/BTF/array-1d-char.ll
deleted file mode 100644
index 5ef3e92..0000000
--- a/llvm/test/DebugInfo/BTF/array-1d-char.ll
+++ /dev/null
@@ -1,68 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   char a[10];
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-@a = common dso_local local_unnamed_addr global [10 x i8] zeroinitializer, align 1, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!10, !11, !12}
-!llvm.ident = !{!13}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   56
-; CHECK-NEXT:        .long   56
-; CHECK-NEXT:        .long   26
-; CHECK-NEXT:        .long   0                       # BTF_KIND_ARRAY(id = 1)
-; CHECK-NEXT:        .long   50331648                # 0x3000000
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   10
-; CHECK-NEXT:        .long   1                       # BTF_KIND_INT(id = 2)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   32                      # 0x20
-; CHECK-NEXT:        .long   21                      # BTF_KIND_INT(id = 3)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   16777224                # 0x1000008
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  "__ARRAY_SIZE_TYPE__"   # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "char"                  # string offset=21
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 80, elements: !8)
-!7 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
-!8 = !{!9}
-!9 = !DISubrange(count: 10)
-!10 = !{i32 2, !"Dwarf Version", i32 4}
-!11 = !{i32 2, !"Debug Info Version", i32 3}
-!12 = !{i32 1, !"wchar_size", i32 4}
-!13 = !{!"clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)"}
diff --git a/llvm/test/DebugInfo/BTF/array-1d-int.ll b/llvm/test/DebugInfo/BTF/array-1d-int.ll
deleted file mode 100644
index 8d81dbe..0000000
--- a/llvm/test/DebugInfo/BTF/array-1d-int.ll
+++ /dev/null
@@ -1,68 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   int a[10];
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-@a = common dso_local local_unnamed_addr global [10 x i32] zeroinitializer, align 4, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!10, !11, !12}
-!llvm.ident = !{!13}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   56
-; CHECK-NEXT:        .long   56
-; CHECK-NEXT:        .long   25
-; CHECK-NEXT:        .long   0                       # BTF_KIND_ARRAY(id = 1)
-; CHECK-NEXT:        .long   50331648                # 0x3000000
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   10
-; CHECK-NEXT:        .long   1                       # BTF_KIND_INT(id = 2)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   32                      # 0x20
-; CHECK-NEXT:        .long   21                      # BTF_KIND_INT(id = 3)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   16777248                # 0x1000020
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  "__ARRAY_SIZE_TYPE__"   # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "int"                   # string offset=21
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 320, elements: !8)
-!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
-!8 = !{!9}
-!9 = !DISubrange(count: 10)
-!10 = !{i32 2, !"Dwarf Version", i32 4}
-!11 = !{i32 2, !"Debug Info Version", i32 3}
-!12 = !{i32 1, !"wchar_size", i32 4}
-!13 = !{!"clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)"}
diff --git a/llvm/test/DebugInfo/BTF/array-2d-int.ll b/llvm/test/DebugInfo/BTF/array-2d-int.ll
deleted file mode 100644
index 00db42e..0000000
--- a/llvm/test/DebugInfo/BTF/array-2d-int.ll
+++ /dev/null
@@ -1,68 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   int a[10][10];
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-@a = common dso_local local_unnamed_addr global [10 x [10 x i32]] zeroinitializer, align 4, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!10, !11, !12}
-!llvm.ident = !{!13}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   56
-; CHECK-NEXT:        .long   56
-; CHECK-NEXT:        .long   25
-; CHECK-NEXT:        .long   0                       # BTF_KIND_ARRAY(id = 1)
-; CHECK-NEXT:        .long   50331648                # 0x3000000
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   100
-; CHECK-NEXT:        .long   1                       # BTF_KIND_INT(id = 2)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   32                      # 0x20
-; CHECK-NEXT:        .long   21                      # BTF_KIND_INT(id = 3)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   16777248                # 0x1000020
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  "__ARRAY_SIZE_TYPE__"   # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "int"                   # string offset=21
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 3200, elements: !8)
-!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
-!8 = !{!9, !9}
-!9 = !DISubrange(count: 10)
-!10 = !{i32 2, !"Dwarf Version", i32 4}
-!11 = !{i32 2, !"Debug Info Version", i32 3}
-!12 = !{i32 1, !"wchar_size", i32 4}
-!13 = !{!"clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)"}
diff --git a/llvm/test/DebugInfo/BTF/array-size-0.ll b/llvm/test/DebugInfo/BTF/array-size-0.ll
deleted file mode 100644
index 11e694a..0000000
--- a/llvm/test/DebugInfo/BTF/array-size-0.ll
+++ /dev/null
@@ -1,70 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   struct t {};
-;   struct t a[10];
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-%struct.t = type {}
-
-@a = common dso_local local_unnamed_addr global [10 x %struct.t] zeroinitializer, align 1, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!10, !11, !12}
-!llvm.ident = !{!13}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   52
-; CHECK-NEXT:        .long   52
-; CHECK-NEXT:        .long   23
-; CHECK-NEXT:        .long   0                       # BTF_KIND_ARRAY(id = 1)
-; CHECK-NEXT:        .long   50331648                # 0x3000000
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   1                       # BTF_KIND_INT(id = 2)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   32                      # 0x20
-; CHECK-NEXT:        .long   21                      # BTF_KIND_STRUCT(id = 3)
-; CHECK-NEXT:        .long   67108864                # 0x4000000
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  "__ARRAY_SIZE_TYPE__"   # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .byte   116                     # string offset=21
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 2, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, elements: !8)
-!7 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "t", file: !3, line: 1, elements: !4)
-!8 = !{!9}
-!9 = !DISubrange(count: 10)
-!10 = !{i32 2, !"Dwarf Version", i32 4}
-!11 = !{i32 2, !"Debug Info Version", i32 3}
-!12 = !{i32 1, !"wchar_size", i32 4}
-!13 = !{!"clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)"}
diff --git a/llvm/test/DebugInfo/BTF/array-typedef.ll b/llvm/test/DebugInfo/BTF/array-typedef.ll
deleted file mode 100644
index 9fe57c9..0000000
--- a/llvm/test/DebugInfo/BTF/array-typedef.ll
+++ /dev/null
@@ -1,82 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   typedef unsigned _int;
-;   typedef _int __int;
-;   __int a[10];
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-@a = common dso_local local_unnamed_addr global [10 x i32] zeroinitializer, align 4, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!12, !13, !14}
-!llvm.ident = !{!15}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   80
-; CHECK-NEXT:        .long   80
-; CHECK-NEXT:        .long   45
-; CHECK-NEXT:        .long   0                       # BTF_KIND_ARRAY(id = 1)
-; CHECK-NEXT:        .long   50331648                # 0x3000000
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   10
-; CHECK-NEXT:        .long   1                       # BTF_KIND_INT(id = 2)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   32                      # 0x20
-; CHECK-NEXT:        .long   21                      # BTF_KIND_TYPEDEF(id = 3)
-; CHECK-NEXT:        .long   134217728               # 0x8000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   27                      # BTF_KIND_TYPEDEF(id = 4)
-; CHECK-NEXT:        .long   134217728               # 0x8000000
-; CHECK-NEXT:        .long   5
-; CHECK-NEXT:        .long   32                      # BTF_KIND_INT(id = 5)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   32                      # 0x20
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  "__ARRAY_SIZE_TYPE__"   # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "__int"                 # string offset=21
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "_int"                  # string offset=27
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "unsigned int"          # string offset=32
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 3, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 320, elements: !10)
-!7 = !DIDerivedType(tag: DW_TAG_typedef, name: "__int", file: !3, line: 2, baseType: !8)
-!8 = !DIDerivedType(tag: DW_TAG_typedef, name: "_int", file: !3, line: 1, baseType: !9)
-!9 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
-!10 = !{!11}
-!11 = !DISubrange(count: 10)
-!12 = !{i32 2, !"Dwarf Version", i32 4}
-!13 = !{i32 2, !"Debug Info Version", i32 3}
-!14 = !{i32 1, !"wchar_size", i32 4}
-!15 = !{!"clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)"}
diff --git a/llvm/test/DebugInfo/BTF/binary-format.ll b/llvm/test/DebugInfo/BTF/binary-format.ll
deleted file mode 100644
index 39d699b..0000000
--- a/llvm/test/DebugInfo/BTF/binary-format.ll
+++ /dev/null
@@ -1,68 +0,0 @@
-; RUN: llc -march=bpfel -filetype=obj -o - %s | llvm-readelf -x ".BTF" -x ".BTF.ext" | FileCheck -check-prefixes=CHECK,CHECK-EL %s
-; RUN: llc -march=bpfeb -filetype=obj -o - %s | llvm-readelf -x ".BTF" -x ".BTF.ext" | FileCheck -check-prefixes=CHECK,CHECK-EB %s
-
-; Source code:
-;   int f(int a) { return a; }
-; Compilation flag:
-;   clang -target bpf -O2 -g -gdwarf-5 -gembed-source -S -emit-llvm t.c
-
-; Function Attrs: nounwind readnone
-define dso_local i32 @f(i32 returned %a) local_unnamed_addr #0 !dbg !7 {
-entry:
-  call void @llvm.dbg.value(metadata i32 %a, metadata !12, metadata !DIExpression()), !dbg !13
-  ret i32 %a, !dbg !14
-}
-
-; CHECK:    '.BTF'
-; CHECK-EL: 0x00000000 9feb0100 18000000 00000000 30000000
-; CHECK-EL: 0x00000010 30000000 33000000 2b000000 00000001
-; CHECK-EL: 0x00000020 04000000 20000001 00000000 0100000d
-; CHECK-EL: 0x00000030 01000000 2f000000 01000000 31000000
-; CHECK-EL: 0x00000040 0000000c 02000000 002e7465 7874002f
-; CHECK-EB: 0x00000000 eb9f0100 00000018 00000000 00000030
-; CHECK-EB: 0x00000010 00000030 00000033 0000002b 01000000
-; CHECK-EB: 0x00000020 00000004 01000020 00000000 0d000001
-; CHECK-EB: 0x00000030 00000001 0000002f 00000001 00000031
-; CHECK-EB: 0x00000040 0c000000 00000002 002e7465 7874002f
-; CHECK:    0x00000050 746d702f 742e6300 696e7420 6628696e
-; CHECK:    0x00000060 74206129 207b2072 65747572 6e20613b
-; CHECK:    0x00000070 207d0069 6e740061 006600
-; CHECK:    '.BTF.ext'
-; CHECK-EL: 0x00000000 9feb0100 18000000 00000000 14000000
-; CHECK-EL: 0x00000010 14000000 2c000000 08000000 01000000
-; CHECK-EL: 0x00000020 01000000 00000000 03000000 10000000
-; CHECK-EL: 0x00000030 01000000 02000000 00000000 07000000
-; CHECK-EL: 0x00000040 10000000 00040000 08000000 07000000
-; CHECK-EL: 0x00000050 10000000 10040000
-; CHECK-EB: 0x00000000 eb9f0100 00000018 00000000 00000014
-; CHECK-EB: 0x00000010 00000014 0000002c 00000008 00000001
-; CHECK-EB: 0x00000020 00000001 00000000 00000003 00000010
-; CHECK-EB: 0x00000030 00000001 00000002 00000000 00000007
-; CHECK-EB: 0x00000040 00000010 00000400 00000008 00000007
-; CHECK-EB: 0x00000050 00000010 00000410
-
-; Function Attrs: nounwind readnone speculatable
-declare void @llvm.dbg.value(metadata, metadata, metadata) #1
-
-attributes #0 = { nounwind readnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
-attributes #1 = { nounwind readnone speculatable }
-
-!llvm.dbg.cu = !{!0}
-!llvm.module.flags = !{!3, !4, !5}
-!llvm.ident = !{!6}
-
-!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
-!1 = !DIFile(filename: "t.c", directory: "/tmp", checksumkind: CSK_MD5, checksum: "1924f0d78deb326ceb76cd8e9f450775", source: "int f(int a) { return a; }\0A")
-!2 = !{}
-!3 = !{i32 2, !"Dwarf Version", i32 5}
-!4 = !{i32 2, !"Debug Info Version", i32 3}
-!5 = !{i32 1, !"wchar_size", i32 4}
-!6 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}
-!7 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, isOptimized: true, unit: !0, retainedNodes: !11)
-!8 = !DISubroutineType(types: !9)
-!9 = !{!10, !10}
-!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
-!11 = !{!12}
-!12 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 1, type: !10)
-!13 = !DILocation(line: 1, column: 11, scope: !7)
-!14 = !DILocation(line: 1, column: 16, scope: !7)
diff --git a/llvm/test/DebugInfo/BTF/char.ll b/llvm/test/DebugInfo/BTF/char.ll
deleted file mode 100644
index 122f698..0000000
--- a/llvm/test/DebugInfo/BTF/char.ll
+++ /dev/null
@@ -1,53 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   char a;
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-@a = common dso_local local_unnamed_addr global i8 0, align 1, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!7, !8, !9}
-!llvm.ident = !{!10}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   16
-; CHECK-NEXT:        .long   16
-; CHECK-NEXT:        .long   6
-; CHECK-NEXT:        .long   1                       # BTF_KIND_INT(id = 1)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   16777224                # 0x1000008
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  "char"                  # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
-!7 = !{i32 2, !"Dwarf Version", i32 4}
-!8 = !{i32 2, !"Debug Info Version", i32 3}
-!9 = !{i32 1, !"wchar_size", i32 4}
-!10 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}
diff --git a/llvm/test/DebugInfo/BTF/enum-basic.ll b/llvm/test/DebugInfo/BTF/enum-basic.ll
deleted file mode 100644
index 5b71030..0000000
--- a/llvm/test/DebugInfo/BTF/enum-basic.ll
+++ /dev/null
@@ -1,62 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   enum { A = -1, B = 2 } a;
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-@a = common dso_local local_unnamed_addr global i32 0, align 4, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!11, !12, !13}
-!llvm.ident = !{!14}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   28
-; CHECK-NEXT:        .long   28
-; CHECK-NEXT:        .long   5
-; CHECK-NEXT:        .long   0                       # BTF_KIND_ENUM(id = 1)
-; CHECK-NEXT:        .long   100663298               # 0x6000002
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   -1
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .byte   65                      # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .byte   66                      # string offset=3
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !5, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !10, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{!5}
-!5 = !DICompositeType(tag: DW_TAG_enumeration_type, file: !3, line: 1, baseType: !6, size: 32, elements: !7)
-!6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
-!7 = !{!8, !9}
-!8 = !DIEnumerator(name: "A", value: -1)
-!9 = !DIEnumerator(name: "B", value: 2)
-!10 = !{!0}
-!11 = !{i32 2, !"Dwarf Version", i32 4}
-!12 = !{i32 2, !"Debug Info Version", i32 3}
-!13 = !{i32 1, !"wchar_size", i32 4}
-!14 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}
diff --git a/llvm/test/DebugInfo/BTF/func-func-ptr.ll b/llvm/test/DebugInfo/BTF/func-func-ptr.ll
deleted file mode 100644
index df564f5..0000000
--- a/llvm/test/DebugInfo/BTF/func-func-ptr.ll
+++ /dev/null
@@ -1,128 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   void (*a1)(int p1);
-;   struct t1 { void (*a1)(int p1); } b1;
-;   void f1(int p2) { }
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-%struct.t1 = type { void (i32)* }
-
-@a1 = common dso_local local_unnamed_addr global void (i32)* null, align 8, !dbg !0
-@b1 = common dso_local local_unnamed_addr global %struct.t1 zeroinitializer, align 8, !dbg !6
-
-; Function Attrs: nounwind readnone
-define dso_local void @f1(i32 %p2) local_unnamed_addr #0 !dbg !19 {
-entry:
-  call void @llvm.dbg.value(metadata i32 %p2, metadata !21, metadata !DIExpression()), !dbg !22
-  ret void, !dbg !23
-}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   104
-; CHECK-NEXT:        .long   104
-; CHECK-NEXT:        .long   32
-; CHECK-NEXT:        .long   16                      # BTF_KIND_INT(id = 1)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   16777248                # 0x1000020
-; CHECK-NEXT:        .long   0                       # BTF_KIND_FUNC_PROTO(id = 2)
-; CHECK-NEXT:        .long   218103809               # 0xd000001
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   20
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   23                      # BTF_KIND_FUNC(id = 3)
-; CHECK-NEXT:        .long   201326592               # 0xc000000
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   0                       # BTF_KIND_PTR(id = 4)
-; CHECK-NEXT:        .long   33554432                # 0x2000000
-; CHECK-NEXT:        .long   5
-; CHECK-NEXT:        .long   0                       # BTF_KIND_FUNC_PROTO(id = 5)
-; CHECK-NEXT:        .long   218103809               # 0xd000001
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   26                      # BTF_KIND_STRUCT(id = 6)
-; CHECK-NEXT:        .long   67108865                # 0x4000001
-; CHECK-NEXT:        .long   8
-; CHECK-NEXT:        .long   29
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  ".text"                 # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "/tmp/t.c"              # string offset=7
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "int"                   # string offset=16
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "p2"                    # string offset=20
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "f1"                    # string offset=23
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "t1"                    # string offset=26
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "a1"                    # string offset=29
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   20
-; CHECK-NEXT:        .long   20
-; CHECK-NEXT:        .long   28
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   1                       # FuncInfo section string offset=1
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   .Lfunc_begin0
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   16                      # LineInfo
-; CHECK-NEXT:        .long   1                       # LineInfo section string offset=1
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   .Ltmp{{[0-9]+}}
-; CHECK-NEXT:        .long   7
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   3091                    # Line 3 Col 19
-
-; Function Attrs: nounwind readnone speculatable
-declare void @llvm.dbg.value(metadata, metadata, metadata) #1
-
-attributes #0 = { nounwind readnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
-attributes #1 = { nounwind readnone speculatable }
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!15, !16, !17}
-!llvm.ident = !{!18}
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a1", scope: !2, file: !3, line: 1, type: !11, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/tmp")
-!4 = !{}
-!5 = !{!0, !6}
-!6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression())
-!7 = distinct !DIGlobalVariable(name: "b1", scope: !2, file: !3, line: 2, type: !8, isLocal: false, isDefinition: true)
-!8 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "t1", file: !3, line: 2, size: 64, elements: !9)
-!9 = !{!10}
-!10 = !DIDerivedType(tag: DW_TAG_member, name: "a1", scope: !8, file: !3, line: 2, baseType: !11, size: 64)
-!11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64)
-!12 = !DISubroutineType(types: !13)
-!13 = !{null, !14}
-!14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
-!15 = !{i32 2, !"Dwarf Version", i32 4}
-!16 = !{i32 2, !"Debug Info Version", i32 3}
-!17 = !{i32 1, !"wchar_size", i32 4}
-!18 = !{!"clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)"}
-!19 = distinct !DISubprogram(name: "f1", scope: !3, file: !3, line: 3, type: !12, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !20)
-!20 = !{!21}
-!21 = !DILocalVariable(name: "p2", arg: 1, scope: !19, file: !3, line: 3, type: !14)
-!22 = !DILocation(line: 3, column: 13, scope: !19)
-!23 = !DILocation(line: 3, column: 19, scope: !19)
diff --git a/llvm/test/DebugInfo/BTF/func-non-void.ll b/llvm/test/DebugInfo/BTF/func-non-void.ll
deleted file mode 100644
index e5361b9..0000000
--- a/llvm/test/DebugInfo/BTF/func-non-void.ll
+++ /dev/null
@@ -1,97 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   int f1(int a1) { return a1; }
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-; Function Attrs: nounwind readnone
-define dso_local i32 @f1(i32 returned) local_unnamed_addr #0 !dbg !7 {
-  call void @llvm.dbg.value(metadata i32 %0, metadata !12, metadata !DIExpression()), !dbg !13
-  ret i32 %0, !dbg !14
-}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   48
-; CHECK-NEXT:        .long   48
-; CHECK-NEXT:        .long   26
-; CHECK-NEXT:        .long   16                      # BTF_KIND_INT(id = 1)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   16777248                # 0x1000020
-; CHECK-NEXT:        .long   0                       # BTF_KIND_FUNC_PROTO(id = 2)
-; CHECK-NEXT:        .long   218103809               # 0xd000001
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   20
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   23                      # BTF_KIND_FUNC(id = 3)
-; CHECK-NEXT:        .long   201326592               # 0xc000000
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  ".text"                 # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "/tmp/t.c"              # string offset=7
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "int"                   # string offset=16
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "a1"                    # string offset=20
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "f1"                    # string offset=23
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   20
-; CHECK-NEXT:        .long   20
-; CHECK-NEXT:        .long   44
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   1                       # FuncInfo section string offset=1
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   .Lfunc_begin0
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   16                      # LineInfo
-; CHECK-NEXT:        .long   1                       # LineInfo section string offset=1
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   .Lfunc_begin0
-; CHECK-NEXT:        .long   7
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   1024                    # Line 1 Col 0
-; CHECK-NEXT:        .long   .Ltmp{{[0-9]+}}
-; CHECK-NEXT:        .long   7
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   1042                    # Line 1 Col 18
-
-; Function Attrs: nounwind readnone speculatable
-declare void @llvm.dbg.value(metadata, metadata, metadata) #1
-
-attributes #0 = { nounwind readnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
-attributes #1 = { nounwind readnone speculatable }
-
-!llvm.dbg.cu = !{!0}
-!llvm.module.flags = !{!3, !4, !5}
-!llvm.ident = !{!6}
-
-!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 8.0.0 (trunk 345562) (llvm/trunk 345560)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
-!1 = !DIFile(filename: "t.c", directory: "/tmp")
-!2 = !{}
-!3 = !{i32 2, !"Dwarf Version", i32 4}
-!4 = !{i32 2, !"Debug Info Version", i32 3}
-!5 = !{i32 1, !"wchar_size", i32 4}
-!6 = !{!"clang version 8.0.0 (trunk 345562) (llvm/trunk 345560)"}
-!7 = distinct !DISubprogram(name: "f1", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !11)
-!8 = !DISubroutineType(types: !9)
-!9 = !{!10, !10}
-!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
-!11 = !{!12}
-!12 = !DILocalVariable(name: "a1", arg: 1, scope: !7, file: !1, line: 1, type: !10)
-!13 = !DILocation(line: 1, column: 12, scope: !7)
-!14 = !DILocation(line: 1, column: 18, scope: !7)
diff --git a/llvm/test/DebugInfo/BTF/func-source.ll b/llvm/test/DebugInfo/BTF/func-source.ll
deleted file mode 100644
index 6e1bed3..0000000
--- a/llvm/test/DebugInfo/BTF/func-source.ll
+++ /dev/null
@@ -1,80 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   void f(void) { }
-; Compilation flag:
-;   clang -target bpf -O2 -g -gdwarf-5 -gembed-source -S -emit-llvm t.c
-;
-; This test embeds the source code in the IR, so the line info should have
-; correct reference to the lines in the string table.
-
-; Function Attrs: norecurse nounwind readnone
-define dso_local void @f() local_unnamed_addr #0 !dbg !7 {
-entry:
-  ret void, !dbg !10
-}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   35
-; CHECK-NEXT:        .long   0                       # BTF_KIND_FUNC_PROTO(id = 1)
-; CHECK-NEXT:        .long   218103808               # 0xd000000
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   33                      # BTF_KIND_FUNC(id = 2)
-; CHECK-NEXT:        .long   201326592               # 0xc000000
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  ".text"                 # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "/tmp/t.c"              # string offset=7
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "void f(void) { }"      # string offset=16
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .byte   102                     # string offset=33
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   20
-; CHECK-NEXT:        .long   20
-; CHECK-NEXT:        .long   28
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   1                       # FuncInfo section string offset=1
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   .Lfunc_begin0
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   16                      # LineInfo
-; CHECK-NEXT:        .long   1                       # LineInfo section string offset=1
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   .Ltmp{{[0-9]+}}
-; CHECK-NEXT:        .long   7
-; CHECK-NEXT:        .long   16
-; CHECK-NEXT:        .long   1040                    # Line 1 Col 16
-
-attributes #0 = { norecurse nounwind readnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
-
-!llvm.dbg.cu = !{!0}
-!llvm.module.flags = !{!3, !4, !5}
-!llvm.ident = !{!6}
-
-!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
-!1 = !DIFile(filename: "t.c", directory: "/tmp", checksumkind: CSK_MD5, checksum: "978599fafe3a080b456e3d95a3710359", source: "void f(void) { }\0A")
-!2 = !{}
-!3 = !{i32 2, !"Dwarf Version", i32 5}
-!4 = !{i32 2, !"Debug Info Version", i32 3}
-!5 = !{i32 1, !"wchar_size", i32 4}
-!6 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}
-!7 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, isOptimized: true, unit: !0, retainedNodes: !2)
-!8 = !DISubroutineType(types: !9)
-!9 = !{null}
-!10 = !DILocation(line: 1, column: 16, scope: !7)
diff --git a/llvm/test/DebugInfo/BTF/func-typedef.ll b/llvm/test/DebugInfo/BTF/func-typedef.ll
deleted file mode 100644
index 8deac0f..0000000
--- a/llvm/test/DebugInfo/BTF/func-typedef.ll
+++ /dev/null
@@ -1,112 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   typedef int _int;
-;   typedef _int __int;
-;   __int f(__int a) { return a; }
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-; Function Attrs: nounwind readnone
-define dso_local i32 @f(i32 returned %a) local_unnamed_addr #0 !dbg !7 {
-entry:
-  call void @llvm.dbg.value(metadata i32 %a, metadata !14, metadata !DIExpression()), !dbg !15
-  ret i32 %a, !dbg !16
-}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   72
-; CHECK-NEXT:        .long   72
-; CHECK-NEXT:        .long   35
-; CHECK-NEXT:        .long   16                      # BTF_KIND_TYPEDEF(id = 1)
-; CHECK-NEXT:        .long   134217728               # 0x8000000
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   22                      # BTF_KIND_TYPEDEF(id = 2)
-; CHECK-NEXT:        .long   134217728               # 0x8000000
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   27                      # BTF_KIND_INT(id = 3)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   16777248                # 0x1000020
-; CHECK-NEXT:        .long   0                       # BTF_KIND_FUNC_PROTO(id = 4)
-; CHECK-NEXT:        .long   218103809               # 0xd000001
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   31
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   33                      # BTF_KIND_FUNC(id = 5)
-; CHECK-NEXT:        .long   201326592               # 0xc000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  ".text"                 # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "/tmp/t.c"              # string offset=7
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "__int"                 # string offset=16
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "_int"                  # string offset=22
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "int"                   # string offset=27
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .byte   97                      # string offset=31
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .byte   102                     # string offset=33
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   20
-; CHECK-NEXT:        .long   20
-; CHECK-NEXT:        .long   44
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   1                       # FuncInfo section string offset=1
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   .Lfunc_begin0
-; CHECK-NEXT:        .long   5
-; CHECK-NEXT:        .long   16                      # LineInfo
-; CHECK-NEXT:        .long   1                       # LineInfo section string offset=1
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   .Lfunc_begin0
-; CHECK-NEXT:        .long   7
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   3072                    # Line 3 Col 0
-; CHECK-NEXT:        .long   .Ltmp{{[0-9]+}}
-; CHECK-NEXT:        .long   7
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   3092                    # Line 3 Col 20
-
-; Function Attrs: nounwind readnone speculatable
-declare void @llvm.dbg.value(metadata, metadata, metadata) #1
-
-attributes #0 = { nounwind readnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
-attributes #1 = { nounwind readnone speculatable }
-
-!llvm.dbg.cu = !{!0}
-!llvm.module.flags = !{!3, !4, !5}
-!llvm.ident = !{!6}
-
-!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
-!1 = !DIFile(filename: "t.c", directory: "/tmp")
-!2 = !{}
-!3 = !{i32 2, !"Dwarf Version", i32 4}
-!4 = !{i32 2, !"Debug Info Version", i32 3}
-!5 = !{i32 1, !"wchar_size", i32 4}
-!6 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}
-!7 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 3, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !13)
-!8 = !DISubroutineType(types: !9)
-!9 = !{!10, !10}
-!10 = !DIDerivedType(tag: DW_TAG_typedef, name: "__int", file: !1, line: 2, baseType: !11)
-!11 = !DIDerivedType(tag: DW_TAG_typedef, name: "_int", file: !1, line: 1, baseType: !12)
-!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
-!13 = !{!14}
-!14 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 3, type: !10)
-!15 = !DILocation(line: 3, column: 15, scope: !7)
-!16 = !DILocation(line: 3, column: 20, scope: !7)
diff --git a/llvm/test/DebugInfo/BTF/func-unused-arg.ll b/llvm/test/DebugInfo/BTF/func-unused-arg.ll
deleted file mode 100644
index 62e9d40..0000000
--- a/llvm/test/DebugInfo/BTF/func-unused-arg.ll
+++ /dev/null
@@ -1,93 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   int f1(int a1) { return 0; }
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-; Function Attrs: nounwind readnone
-define dso_local i32 @f1(i32) local_unnamed_addr #0 !dbg !7 {
-  call void @llvm.dbg.value(metadata i32 %0, metadata !12, metadata !DIExpression()), !dbg !13
-  ret i32 0, !dbg !14
-}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   48
-; CHECK-NEXT:        .long   48
-; CHECK-NEXT:        .long   26
-; CHECK-NEXT:        .long   16                      # BTF_KIND_INT(id = 1)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   16777248                # 0x1000020
-; CHECK-NEXT:        .long   0                       # BTF_KIND_FUNC_PROTO(id = 2)
-; CHECK-NEXT:        .long   218103809               # 0xd000001
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   20
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   23                      # BTF_KIND_FUNC(id = 3)
-; CHECK-NEXT:        .long   201326592               # 0xc000000
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  ".text"                 # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "/tmp/t.c"              # string offset=7
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "int"                   # string offset=16
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "a1"                    # string offset=20
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "f1"                    # string offset=23
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   20
-; CHECK-NEXT:        .long   20
-; CHECK-NEXT:        .long   28
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   1                       # FuncInfo section string offset=1
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   .Lfunc_begin0
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   16                      # LineInfo
-; CHECK-NEXT:        .long   1                       # LineInfo section string offset=1
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   .Ltmp{{[0-9]+}}
-; CHECK-NEXT:        .long   7
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   1042                    # Line 1 Col 18
-
-; Function Attrs: nounwind readnone speculatable
-declare void @llvm.dbg.value(metadata, metadata, metadata) #1
-
-attributes #0 = { nounwind readnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
-attributes #1 = { nounwind readnone speculatable }
-
-!llvm.dbg.cu = !{!0}
-!llvm.module.flags = !{!3, !4, !5}
-!llvm.ident = !{!6}
-
-!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 8.0.0 (trunk 345562) (llvm/trunk 345560)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
-!1 = !DIFile(filename: "t.c", directory: "/tmp")
-!2 = !{}
-!3 = !{i32 2, !"Dwarf Version", i32 4}
-!4 = !{i32 2, !"Debug Info Version", i32 3}
-!5 = !{i32 1, !"wchar_size", i32 4}
-!6 = !{!"clang version 8.0.0 (trunk 345562) (llvm/trunk 345560)"}
-!7 = distinct !DISubprogram(name: "f1", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !11)
-!8 = !DISubroutineType(types: !9)
-!9 = !{!10, !10}
-!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
-!11 = !{!12}
-!12 = !DILocalVariable(name: "a1", arg: 1, scope: !7, file: !1, line: 1, type: !10)
-!13 = !DILocation(line: 1, column: 12, scope: !7)
-!14 = !DILocation(line: 1, column: 18, scope: !7)
diff --git a/llvm/test/DebugInfo/BTF/func-void.ll b/llvm/test/DebugInfo/BTF/func-void.ll
deleted file mode 100644
index f86643b..0000000
--- a/llvm/test/DebugInfo/BTF/func-void.ll
+++ /dev/null
@@ -1,74 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   void f1(void) {}
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-; Function Attrs: norecurse nounwind readnone
-define dso_local void @f1() local_unnamed_addr #0 !dbg !7 {
-  ret void, !dbg !10
-}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   19
-; CHECK-NEXT:        .long   0                       # BTF_KIND_FUNC_PROTO(id = 1)
-; CHECK-NEXT:        .long   218103808               # 0xd000000
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   16                      # BTF_KIND_FUNC(id = 2)
-; CHECK-NEXT:        .long   201326592               # 0xc000000
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  ".text"                 # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "/tmp/t.c"              # string offset=7
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "f1"                    # string offset=16
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   20
-; CHECK-NEXT:        .long   20
-; CHECK-NEXT:        .long   28
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   1                       # FuncInfo section string offset=1
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   .Lfunc_begin0
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   16                      # LineInfo
-; CHECK-NEXT:        .long   1                       # LineInfo section string offset=1
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   .Ltmp{{[0-9]+}}
-; CHECK-NEXT:        .long   7
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   1040                    # Line 1 Col 16
-
-attributes #0 = { norecurse nounwind readnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
-
-!llvm.dbg.cu = !{!0}
-!llvm.module.flags = !{!3, !4, !5}
-!llvm.ident = !{!6}
-
-!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 8.0.0 (trunk 345562) (llvm/trunk 345560)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
-!1 = !DIFile(filename: "t.c", directory: "/tmp")
-!2 = !{}
-!3 = !{i32 2, !"Dwarf Version", i32 4}
-!4 = !{i32 2, !"Debug Info Version", i32 3}
-!5 = !{i32 1, !"wchar_size", i32 4}
-!6 = !{!"clang version 8.0.0 (trunk 345562) (llvm/trunk 345560)"}
-!7 = distinct !DISubprogram(name: "f1", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2)
-!8 = !DISubroutineType(types: !9)
-!9 = !{null}
-!10 = !DILocation(line: 1, column: 16, scope: !7)
diff --git a/llvm/test/DebugInfo/BTF/fwd-no-define.ll b/llvm/test/DebugInfo/BTF/fwd-no-define.ll
deleted file mode 100644
index c3d082e..0000000
--- a/llvm/test/DebugInfo/BTF/fwd-no-define.ll
+++ /dev/null
@@ -1,73 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   struct t1;
-;   struct t2 {struct t1 *p;} a;
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-%struct.t2 = type { %struct.t1* }
-%struct.t1 = type opaque
-
-@a = common dso_local local_unnamed_addr global %struct.t2 zeroinitializer, align 8, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!11, !12, !13}
-!llvm.ident = !{!14}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   48
-; CHECK-NEXT:        .long   48
-; CHECK-NEXT:        .long   9
-; CHECK-NEXT:        .long   1                       # BTF_KIND_STRUCT(id = 1)
-; CHECK-NEXT:        .long   67108865                # 0x4000001
-; CHECK-NEXT:        .long   8
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   0                       # BTF_KIND_PTR(id = 2)
-; CHECK-NEXT:        .long   33554432                # 0x2000000
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   6                       # BTF_KIND_FWD(id = 3)
-; CHECK-NEXT:        .long   117440512               # 0x7000000
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  "t2"                    # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .byte   112                     # string offset=4
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "t1"                    # string offset=6
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 2, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "t2", file: !3, line: 2, size: 64, elements: !7)
-!7 = !{!8}
-!8 = !DIDerivedType(tag: DW_TAG_member, name: "p", scope: !6, file: !3, line: 2, baseType: !9, size: 64)
-!9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64)
-!10 = !DICompositeType(tag: DW_TAG_structure_type, name: "t1", file: !3, line: 1, flags: DIFlagFwdDecl)
-!11 = !{i32 2, !"Dwarf Version", i32 4}
-!12 = !{i32 2, !"Debug Info Version", i32 3}
-!13 = !{i32 1, !"wchar_size", i32 4}
-!14 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}
diff --git a/llvm/test/DebugInfo/BTF/fwd-with-define.ll b/llvm/test/DebugInfo/BTF/fwd-with-define.ll
deleted file mode 100644
index 8a88c89..0000000
--- a/llvm/test/DebugInfo/BTF/fwd-with-define.ll
+++ /dev/null
@@ -1,66 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   struct t1;
-;   struct t1 {struct t1 *p;} a;
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-%struct.t1 = type { %struct.t1* }
-
-@a = common dso_local local_unnamed_addr global %struct.t1 zeroinitializer, align 8, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!10, !11, !12}
-!llvm.ident = !{!13}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   36
-; CHECK-NEXT:        .long   36
-; CHECK-NEXT:        .long   6
-; CHECK-NEXT:        .long   1                       # BTF_KIND_STRUCT(id = 1)
-; CHECK-NEXT:        .long   67108865                # 0x4000001
-; CHECK-NEXT:        .long   8
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   0                       # BTF_KIND_PTR(id = 2)
-; CHECK-NEXT:        .long   33554432                # 0x2000000
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  "t1"                    # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .byte   112                     # string offset=4
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 2, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "t1", file: !3, line: 2, size: 64, elements: !7)
-!7 = !{!8}
-!8 = !DIDerivedType(tag: DW_TAG_member, name: "p", scope: !6, file: !3, line: 2, baseType: !9, size: 64)
-!9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !6, size: 64)
-!10 = !{i32 2, !"Dwarf Version", i32 4}
-!11 = !{i32 2, !"Debug Info Version", i32 3}
-!12 = !{i32 1, !"wchar_size", i32 4}
-!13 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}
diff --git a/llvm/test/DebugInfo/BTF/int.ll b/llvm/test/DebugInfo/BTF/int.ll
deleted file mode 100644
index fd12cd0..0000000
--- a/llvm/test/DebugInfo/BTF/int.ll
+++ /dev/null
@@ -1,53 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   int a;
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-@a = common dso_local local_unnamed_addr global i32 0, align 4, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!7, !8, !9}
-!llvm.ident = !{!10}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   16
-; CHECK-NEXT:        .long   16
-; CHECK-NEXT:        .long   5
-; CHECK-NEXT:        .long   1                       # BTF_KIND_INT(id = 1)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   16777248                # 0x1000020
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  "int"                   # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
-!7 = !{i32 2, !"Dwarf Version", i32 4}
-!8 = !{i32 2, !"Debug Info Version", i32 3}
-!9 = !{i32 1, !"wchar_size", i32 4}
-!10 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}
diff --git a/llvm/test/DebugInfo/BTF/lit.local.cfg b/llvm/test/DebugInfo/BTF/lit.local.cfg
deleted file mode 100644
index a4ab262..0000000
--- a/llvm/test/DebugInfo/BTF/lit.local.cfg
+++ /dev/null
@@ -1,2 +0,0 @@
-if not 'BPF' in config.root.targets:
-    config.unsupported = True
diff --git a/llvm/test/DebugInfo/BTF/longlong.ll b/llvm/test/DebugInfo/BTF/longlong.ll
deleted file mode 100644
index f936e1e..0000000
--- a/llvm/test/DebugInfo/BTF/longlong.ll
+++ /dev/null
@@ -1,53 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   long long a;
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-@a = common dso_local local_unnamed_addr global i64 0, align 8, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!7, !8, !9}
-!llvm.ident = !{!10}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   16
-; CHECK-NEXT:        .long   16
-; CHECK-NEXT:        .long   15
-; CHECK-NEXT:        .long   1                       # BTF_KIND_INT(id = 1)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   8
-; CHECK-NEXT:        .long   16777280                # 0x1000040
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  "long long int"         # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = !DIBasicType(name: "long long int", size: 64, encoding: DW_ATE_signed)
-!7 = !{i32 2, !"Dwarf Version", i32 4}
-!8 = !{i32 2, !"Debug Info Version", i32 3}
-!9 = !{i32 1, !"wchar_size", i32 4}
-!10 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}
diff --git a/llvm/test/DebugInfo/BTF/ptr-const-void.ll b/llvm/test/DebugInfo/BTF/ptr-const-void.ll
deleted file mode 100644
index ccc7b8d..0000000
--- a/llvm/test/DebugInfo/BTF/ptr-const-void.ll
+++ /dev/null
@@ -1,54 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   const void *a;
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-@p = common dso_local local_unnamed_addr global i8* null, align 8, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!8, !9, !10}
-!llvm.ident = !{!11}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   0                       # BTF_KIND_PTR(id = 1)
-; CHECK-NEXT:        .long   33554432                # 0x2000000
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   0                       # BTF_KIND_CONST(id = 2)
-; CHECK-NEXT:        .long   167772160               # 0xa000000
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "p", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64)
-!7 = !DIDerivedType(tag: DW_TAG_const_type, baseType: null)
-!8 = !{i32 2, !"Dwarf Version", i32 4}
-!9 = !{i32 2, !"Debug Info Version", i32 3}
-!10 = !{i32 1, !"wchar_size", i32 4}
-!11 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}
diff --git a/llvm/test/DebugInfo/BTF/ptr-func-1.ll b/llvm/test/DebugInfo/BTF/ptr-func-1.ll
deleted file mode 100644
index e80158b..0000000
--- a/llvm/test/DebugInfo/BTF/ptr-func-1.ll
+++ /dev/null
@@ -1,55 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   void (*a)(void);
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-@a = common dso_local local_unnamed_addr global void ()* null, align 8, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!9, !10, !11}
-!llvm.ident = !{!12}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   0                       # BTF_KIND_PTR(id = 1)
-; CHECK-NEXT:        .long   33554432                # 0x2000000
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   0                       # BTF_KIND_FUNC_PROTO(id = 2)
-; CHECK-NEXT:        .long   218103808               # 0xd000000
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64)
-!7 = !DISubroutineType(types: !8)
-!8 = !{null}
-!9 = !{i32 2, !"Dwarf Version", i32 4}
-!10 = !{i32 2, !"Debug Info Version", i32 3}
-!11 = !{i32 1, !"wchar_size", i32 4}
-!12 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}
diff --git a/llvm/test/DebugInfo/BTF/ptr-func-2.ll b/llvm/test/DebugInfo/BTF/ptr-func-2.ll
deleted file mode 100644
index 2972121..0000000
--- a/llvm/test/DebugInfo/BTF/ptr-func-2.ll
+++ /dev/null
@@ -1,73 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   int (*a)(int a, char b);
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-@a = common dso_local local_unnamed_addr global i32 (i32, i8)* null, align 8, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!11, !12, !13}
-!llvm.ident = !{!14}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   72
-; CHECK-NEXT:        .long   72
-; CHECK-NEXT:        .long   10
-; CHECK-NEXT:        .long   0                       # BTF_KIND_PTR(id = 1)
-; CHECK-NEXT:        .long   33554432                # 0x2000000
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   0                       # BTF_KIND_FUNC_PROTO(id = 2)
-; CHECK-NEXT:        .long   218103810               # 0xd000002
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   1                       # BTF_KIND_INT(id = 3)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   16777248                # 0x1000020
-; CHECK-NEXT:        .long   5                       # BTF_KIND_INT(id = 4)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   16777224                # 0x1000008
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  "int"                   # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "char"                  # string offset=5
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64)
-!7 = !DISubroutineType(types: !8)
-!8 = !{!9, !9, !10}
-!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
-!10 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
-!11 = !{i32 2, !"Dwarf Version", i32 4}
-!12 = !{i32 2, !"Debug Info Version", i32 3}
-!13 = !{i32 1, !"wchar_size", i32 4}
-!14 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}
diff --git a/llvm/test/DebugInfo/BTF/ptr-func-3.ll b/llvm/test/DebugInfo/BTF/ptr-func-3.ll
deleted file mode 100644
index 85a15b3..0000000
--- a/llvm/test/DebugInfo/BTF/ptr-func-3.ll
+++ /dev/null
@@ -1,73 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   typedef int __int;
-;   __int (*a)(__int a, __int b);
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-@a = common dso_local local_unnamed_addr global i32 (i32, i32)* null, align 8, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!11, !12, !13}
-!llvm.ident = !{!14}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   68
-; CHECK-NEXT:        .long   68
-; CHECK-NEXT:        .long   11
-; CHECK-NEXT:        .long   0                       # BTF_KIND_PTR(id = 1)
-; CHECK-NEXT:        .long   33554432                # 0x2000000
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   0                       # BTF_KIND_FUNC_PROTO(id = 2)
-; CHECK-NEXT:        .long   218103810               # 0xd000002
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   1                       # BTF_KIND_TYPEDEF(id = 3)
-; CHECK-NEXT:        .long   134217728               # 0x8000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   7                       # BTF_KIND_INT(id = 4)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   16777248                # 0x1000020
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  "__int"                 # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "int"                   # string offset=7
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 2, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64)
-!7 = !DISubroutineType(types: !8)
-!8 = !{!9, !9, !9}
-!9 = !DIDerivedType(tag: DW_TAG_typedef, name: "__int", file: !3, line: 1, baseType: !10)
-!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
-!11 = !{i32 2, !"Dwarf Version", i32 4}
-!12 = !{i32 2, !"Debug Info Version", i32 3}
-!13 = !{i32 1, !"wchar_size", i32 4}
-!14 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}
diff --git a/llvm/test/DebugInfo/BTF/ptr-int.ll b/llvm/test/DebugInfo/BTF/ptr-int.ll
deleted file mode 100644
index 1203f79..0000000
--- a/llvm/test/DebugInfo/BTF/ptr-int.ll
+++ /dev/null
@@ -1,58 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   int *a;
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-@a = common dso_local local_unnamed_addr global i32* null, align 8, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!8, !9, !10}
-!llvm.ident = !{!11}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   28
-; CHECK-NEXT:        .long   28
-; CHECK-NEXT:        .long   5
-; CHECK-NEXT:        .long   0                       # BTF_KIND_PTR(id = 1)
-; CHECK-NEXT:        .long   33554432                # 0x2000000
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   1                       # BTF_KIND_INT(id = 2)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   16777248                # 0x1000020
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  "int"                   # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64)
-!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
-!8 = !{i32 2, !"Dwarf Version", i32 4}
-!9 = !{i32 2, !"Debug Info Version", i32 3}
-!10 = !{i32 1, !"wchar_size", i32 4}
-!11 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}
diff --git a/llvm/test/DebugInfo/BTF/ptr-void.ll b/llvm/test/DebugInfo/BTF/ptr-void.ll
deleted file mode 100644
index e83e130..0000000
--- a/llvm/test/DebugInfo/BTF/ptr-void.ll
+++ /dev/null
@@ -1,50 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   void *a;
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-@a = common dso_local local_unnamed_addr global i8* null, align 8, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!7, !8, !9}
-!llvm.ident = !{!10}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   12
-; CHECK-NEXT:        .long   12
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   0                       # BTF_KIND_PTR(id = 1)
-; CHECK-NEXT:        .long   33554432                # 0x2000000
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
-!7 = !{i32 2, !"Dwarf Version", i32 4}
-!8 = !{i32 2, !"Debug Info Version", i32 3}
-!9 = !{i32 1, !"wchar_size", i32 4}
-!10 = !{!"clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)"}
diff --git a/llvm/test/DebugInfo/BTF/ptr-volatile-const-void.ll b/llvm/test/DebugInfo/BTF/ptr-volatile-const-void.ll
deleted file mode 100644
index 3d5a227..0000000
--- a/llvm/test/DebugInfo/BTF/ptr-volatile-const-void.ll
+++ /dev/null
@@ -1,58 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   volatile const void *p;
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-@p = common dso_local local_unnamed_addr global i8* null, align 8, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!9, !10, !11}
-!llvm.ident = !{!12}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   36
-; CHECK-NEXT:        .long   36
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   0                       # BTF_KIND_PTR(id = 1)
-; CHECK-NEXT:        .long   33554432                # 0x2000000
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   0                       # BTF_KIND_CONST(id = 2)
-; CHECK-NEXT:        .long   167772160               # 0xa000000
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   0                       # BTF_KIND_VOLATILE(id = 3)
-; CHECK-NEXT:        .long   150994944               # 0x9000000
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "p", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64)
-!7 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !8)
-!8 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: null)
-!9 = !{i32 2, !"Dwarf Version", i32 4}
-!10 = !{i32 2, !"Debug Info Version", i32 3}
-!11 = !{i32 1, !"wchar_size", i32 4}
-!12 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}
diff --git a/llvm/test/DebugInfo/BTF/ptr-volatile-void.ll b/llvm/test/DebugInfo/BTF/ptr-volatile-void.ll
deleted file mode 100644
index 185eee0..0000000
--- a/llvm/test/DebugInfo/BTF/ptr-volatile-void.ll
+++ /dev/null
@@ -1,54 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   volatile void *a;
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-@p = common dso_local local_unnamed_addr global i8* null, align 8, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!8, !9, !10}
-!llvm.ident = !{!11}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   0                       # BTF_KIND_PTR(id = 1)
-; CHECK-NEXT:        .long   33554432                # 0x2000000
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   0                       # BTF_KIND_VOLATILE(id = 2)
-; CHECK-NEXT:        .long   150994944               # 0x9000000
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "p", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64)
-!7 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: null)
-!8 = !{i32 2, !"Dwarf Version", i32 4}
-!9 = !{i32 2, !"Debug Info Version", i32 3}
-!10 = !{i32 1, !"wchar_size", i32 4}
-!11 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}
diff --git a/llvm/test/DebugInfo/BTF/restrict-ptr.ll b/llvm/test/DebugInfo/BTF/restrict-ptr.ll
deleted file mode 100644
index 97cbbe4..0000000
--- a/llvm/test/DebugInfo/BTF/restrict-ptr.ll
+++ /dev/null
@@ -1,61 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   int * restrict p;
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-@p = common dso_local local_unnamed_addr global i32* null, align 8, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!9, !10, !11}
-!llvm.ident = !{!12}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   40
-; CHECK-NEXT:        .long   40
-; CHECK-NEXT:        .long   5
-; CHECK-NEXT:        .long   0                       # BTF_KIND_RESTRICT(id = 1)
-; CHECK-NEXT:        .long   184549376               # 0xb000000
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   0                       # BTF_KIND_PTR(id = 2)
-; CHECK-NEXT:        .long   33554432                # 0x2000000
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   1                       # BTF_KIND_INT(id = 3)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   16777248                # 0x1000020
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  "int"                   # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "p", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = !DIDerivedType(tag: DW_TAG_restrict_type, baseType: !7)
-!7 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !8, size: 64)
-!8 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
-!9 = !{i32 2, !"Dwarf Version", i32 4}
-!10 = !{i32 2, !"Debug Info Version", i32 3}
-!11 = !{i32 1, !"wchar_size", i32 4}
-!12 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}
diff --git a/llvm/test/DebugInfo/BTF/short.ll b/llvm/test/DebugInfo/BTF/short.ll
deleted file mode 100644
index 56b779c..0000000
--- a/llvm/test/DebugInfo/BTF/short.ll
+++ /dev/null
@@ -1,54 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   short a;
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-
-@a = common dso_local local_unnamed_addr global i16 0, align 2, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!7, !8, !9}
-!llvm.ident = !{!10}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   16
-; CHECK-NEXT:        .long   16
-; CHECK-NEXT:        .long   7
-; CHECK-NEXT:        .long   1                       # BTF_KIND_INT(id = 1)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   16777232                # 0x1000010
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  "short"                 # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = !DIBasicType(name: "short", size: 16, encoding: DW_ATE_signed)
-!7 = !{i32 2, !"Dwarf Version", i32 4}
-!8 = !{i32 2, !"Debug Info Version", i32 3}
-!9 = !{i32 1, !"wchar_size", i32 4}
-!10 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}
diff --git a/llvm/test/DebugInfo/BTF/struct-anon.ll b/llvm/test/DebugInfo/BTF/struct-anon.ll
deleted file mode 100644
index 3be1752..0000000
--- a/llvm/test/DebugInfo/BTF/struct-anon.ll
+++ /dev/null
@@ -1,76 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   struct { struct {int m;}; } a;
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-%struct.anon = type { %struct.anon.0 }
-%struct.anon.0 = type { i32 }
-
-@a = common dso_local local_unnamed_addr global %struct.anon zeroinitializer, align 4, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!13, !14, !15}
-!llvm.ident = !{!16}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   64
-; CHECK-NEXT:        .long   64
-; CHECK-NEXT:        .long   7
-; CHECK-NEXT:        .long   0                       # BTF_KIND_STRUCT(id = 1)
-; CHECK-NEXT:        .long   67108865                # 0x4000001
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   0                       # BTF_KIND_STRUCT(id = 2)
-; CHECK-NEXT:        .long   67108865                # 0x4000001
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   3                       # BTF_KIND_INT(id = 3)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   16777248                # 0x1000020
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .byte   109                     # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "int"                   # string offset=3
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, file: !3, line: 1, size: 32, elements: !7)
-!7 = !{!8}
-!8 = !DIDerivedType(tag: DW_TAG_member, scope: !6, file: !3, line: 1, baseType: !9, size: 32)
-!9 = distinct !DICompositeType(tag: DW_TAG_structure_type, scope: !6, file: !3, line: 1, size: 32, elements: !10)
-!10 = !{!11}
-!11 = !DIDerivedType(tag: DW_TAG_member, name: "m", scope: !9, file: !3, line: 1, baseType: !12, size: 32)
-!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
-!13 = !{i32 2, !"Dwarf Version", i32 4}
-!14 = !{i32 2, !"Debug Info Version", i32 3}
-!15 = !{i32 1, !"wchar_size", i32 4}
-!16 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}
diff --git a/llvm/test/DebugInfo/BTF/struct-basic.ll b/llvm/test/DebugInfo/BTF/struct-basic.ll
deleted file mode 100644
index 69dc0ca..0000000
--- a/llvm/test/DebugInfo/BTF/struct-basic.ll
+++ /dev/null
@@ -1,81 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   struct t1 {char m1; int n1;} a;
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-%struct.t1 = type { i8, i32 }
-
-@a = common dso_local local_unnamed_addr global %struct.t1 zeroinitializer, align 4, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!12, !13, !14}
-!llvm.ident = !{!15}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   68
-; CHECK-NEXT:        .long   68
-; CHECK-NEXT:        .long   19
-; CHECK-NEXT:        .long   1                       # BTF_KIND_STRUCT(id = 1)
-; CHECK-NEXT:        .long   67108866                # 0x4000002
-; CHECK-NEXT:        .long   8
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   7
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   32
-; CHECK-NEXT:        .long   10                      # BTF_KIND_INT(id = 2)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   16777224                # 0x1000008
-; CHECK-NEXT:        .long   15                      # BTF_KIND_INT(id = 3)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   16777248                # 0x1000020
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  "t1"                    # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "m1"                    # string offset=4
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "n1"                    # string offset=7
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "char"                  # string offset=10
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "int"                   # string offset=15
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "t1", file: !3, line: 1, size: 64, elements: !7)
-!7 = !{!8, !10}
-!8 = !DIDerivedType(tag: DW_TAG_member, name: "m1", scope: !6, file: !3, line: 1, baseType: !9, size: 8)
-!9 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
-!10 = !DIDerivedType(tag: DW_TAG_member, name: "n1", scope: !6, file: !3, line: 1, baseType: !11, size: 32, offset: 32)
-!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
-!12 = !{i32 2, !"Dwarf Version", i32 4}
-!13 = !{i32 2, !"Debug Info Version", i32 3}
-!14 = !{i32 1, !"wchar_size", i32 4}
-!15 = !{!"clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)"}
diff --git a/llvm/test/DebugInfo/BTF/struct-bitfield-typedef.ll b/llvm/test/DebugInfo/BTF/struct-bitfield-typedef.ll
deleted file mode 100644
index 75c7b59..0000000
--- a/llvm/test/DebugInfo/BTF/struct-bitfield-typedef.ll
+++ /dev/null
@@ -1,93 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   typedef int _int;
-;   typedef _int __int;
-;   struct {char m:2; __int n:3; char p;} a;
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-%struct.anon = type { i8, i8, [2 x i8] }
-
-@a = common dso_local local_unnamed_addr global %struct.anon zeroinitializer, align 4, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!15, !16, !17}
-!llvm.ident = !{!18}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   96
-; CHECK-NEXT:        .long   96
-; CHECK-NEXT:        .long   16
-; CHECK-NEXT:        .long   0                       # BTF_KIND_STRUCT(id = 1)
-; CHECK-NEXT:        .long   67108867                # 0x4000003
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   5
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8
-; CHECK-NEXT:        .long   7                       # BTF_KIND_INT(id = 2)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   16777218                # 0x1000002
-; CHECK-NEXT:        .long   12                      # BTF_KIND_INT(id = 3)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   16777219                # 0x1000003
-; CHECK-NEXT:        .long   7                       # BTF_KIND_INT(id = 4)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   16777224                # 0x1000008
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .byte   109                     # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .byte   110                     # string offset=3
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .byte   112                     # string offset=5
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "char"                  # string offset=7
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "int"                   # string offset=12
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 3, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, file: !3, line: 3, size: 32, elements: !7)
-!7 = !{!8, !10, !14}
-!8 = !DIDerivedType(tag: DW_TAG_member, name: "m", scope: !6, file: !3, line: 3, baseType: !9, size: 2, flags: DIFlagBitField, extraData: i64 0)
-!9 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
-!10 = !DIDerivedType(tag: DW_TAG_member, name: "n", scope: !6, file: !3, line: 3, baseType: !11, size: 3, offset: 2, flags: DIFlagBitField, extraData: i64 0)
-!11 = !DIDerivedType(tag: DW_TAG_typedef, name: "__int", file: !3, line: 2, baseType: !12)
-!12 = !DIDerivedType(tag: DW_TAG_typedef, name: "_int", file: !3, line: 1, baseType: !13)
-!13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
-!14 = !DIDerivedType(tag: DW_TAG_member, name: "p", scope: !6, file: !3, line: 3, baseType: !9, size: 8, offset: 8)
-!15 = !{i32 2, !"Dwarf Version", i32 4}
-!16 = !{i32 2, !"Debug Info Version", i32 3}
-!17 = !{i32 1, !"wchar_size", i32 4}
-!18 = !{!"clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)"}
diff --git a/llvm/test/DebugInfo/BTF/struct-enum.ll b/llvm/test/DebugInfo/BTF/struct-enum.ll
deleted file mode 100644
index 37561ec..0000000
--- a/llvm/test/DebugInfo/BTF/struct-enum.ll
+++ /dev/null
@@ -1,92 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   enum t1 { A , B };
-;   struct t2 { enum t1 m:2; enum t1 n; } a;
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-%struct.t2 = type { i8, i32 }
-
-@a = common dso_local local_unnamed_addr global %struct.t2 zeroinitializer, align 4, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!15, !16, !17}
-!llvm.ident = !{!18}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   80
-; CHECK-NEXT:        .long   80
-; CHECK-NEXT:        .long   28
-; CHECK-NEXT:        .long   1                       # BTF_KIND_STRUCT(id = 1)
-; CHECK-NEXT:        .long   67108866                # 0x4000002
-; CHECK-NEXT:        .long   8
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   6
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   32
-; CHECK-NEXT:        .long   8                       # BTF_KIND_INT(id = 2)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   2                       # 0x2
-; CHECK-NEXT:        .long   21                      # BTF_KIND_ENUM(id = 3)
-; CHECK-NEXT:        .long   100663298               # 0x6000002
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   26
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  "t2"                    # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .byte   109                     # string offset=4
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .byte   110                     # string offset=6
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "unsigned int"          # string offset=8
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "t1"                    # string offset=21
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .byte   65                      # string offset=24
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .byte   66                      # string offset=26
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 2, type: !11, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !10, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{!5}
-!5 = !DICompositeType(tag: DW_TAG_enumeration_type, name: "t1", file: !3, line: 1, baseType: !6, size: 32, elements: !7)
-!6 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
-!7 = !{!8, !9}
-!8 = !DIEnumerator(name: "A", value: 0, isUnsigned: true)
-!9 = !DIEnumerator(name: "B", value: 1, isUnsigned: true)
-!10 = !{!0}
-!11 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "t2", file: !3, line: 2, size: 64, elements: !12)
-!12 = !{!13, !14}
-!13 = !DIDerivedType(tag: DW_TAG_member, name: "m", scope: !11, file: !3, line: 2, baseType: !5, size: 2, flags: DIFlagBitField, extraData: i64 0)
-!14 = !DIDerivedType(tag: DW_TAG_member, name: "n", scope: !11, file: !3, line: 2, baseType: !5, size: 32, offset: 32)
-!15 = !{i32 2, !"Dwarf Version", i32 4}
-!16 = !{i32 2, !"Debug Info Version", i32 3}
-!17 = !{i32 1, !"wchar_size", i32 4}
-!18 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}
diff --git a/llvm/test/DebugInfo/BTF/uchar.ll b/llvm/test/DebugInfo/BTF/uchar.ll
deleted file mode 100644
index 19dad38..0000000
--- a/llvm/test/DebugInfo/BTF/uchar.ll
+++ /dev/null
@@ -1,53 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   unsigned char a;
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-@a = common dso_local local_unnamed_addr global i8 0, align 1, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!7, !8, !9}
-!llvm.ident = !{!10}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   16
-; CHECK-NEXT:        .long   16
-; CHECK-NEXT:        .long   15
-; CHECK-NEXT:        .long   1                       # BTF_KIND_INT(id = 1)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   8                       # 0x8
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  "unsigned char"         # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = !DIBasicType(name: "unsigned char", size: 8, encoding: DW_ATE_unsigned_char)
-!7 = !{i32 2, !"Dwarf Version", i32 4}
-!8 = !{i32 2, !"Debug Info Version", i32 3}
-!9 = !{i32 1, !"wchar_size", i32 4}
-!10 = !{!"clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)"}
diff --git a/llvm/test/DebugInfo/BTF/uint.ll b/llvm/test/DebugInfo/BTF/uint.ll
deleted file mode 100644
index b87b2ab..0000000
--- a/llvm/test/DebugInfo/BTF/uint.ll
+++ /dev/null
@@ -1,53 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   unsigned a;
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-@a = common dso_local local_unnamed_addr global i32 0, align 4, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!7, !8, !9}
-!llvm.ident = !{!10}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   16
-; CHECK-NEXT:        .long   16
-; CHECK-NEXT:        .long   14
-; CHECK-NEXT:        .long   1                       # BTF_KIND_INT(id = 1)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   32                      # 0x20
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  "unsigned int"          # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
-!7 = !{i32 2, !"Dwarf Version", i32 4}
-!8 = !{i32 2, !"Debug Info Version", i32 3}
-!9 = !{i32 1, !"wchar_size", i32 4}
-!10 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}
diff --git a/llvm/test/DebugInfo/BTF/ulonglong.ll b/llvm/test/DebugInfo/BTF/ulonglong.ll
deleted file mode 100644
index b8ff144..0000000
--- a/llvm/test/DebugInfo/BTF/ulonglong.ll
+++ /dev/null
@@ -1,53 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   unsigned long long a;
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-@a = common dso_local local_unnamed_addr global i64 0, align 8, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!7, !8, !9}
-!llvm.ident = !{!10}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   16
-; CHECK-NEXT:        .long   16
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   1                       # BTF_KIND_INT(id = 1)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   8
-; CHECK-NEXT:        .long   64                      # 0x40
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  "long long unsigned int" # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = !DIBasicType(name: "long long unsigned int", size: 64, encoding: DW_ATE_unsigned)
-!7 = !{i32 2, !"Dwarf Version", i32 4}
-!8 = !{i32 2, !"Debug Info Version", i32 3}
-!9 = !{i32 1, !"wchar_size", i32 4}
-!10 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}
diff --git a/llvm/test/DebugInfo/BTF/union-array-typedef.ll b/llvm/test/DebugInfo/BTF/union-array-typedef.ll
deleted file mode 100644
index 53a4c60..0000000
--- a/llvm/test/DebugInfo/BTF/union-array-typedef.ll
+++ /dev/null
@@ -1,103 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   typedef int _int;
-;   union t {char m[4]; _int n;} a;
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-%union.t = type { i32 }
-
-@a = common dso_local local_unnamed_addr global %union.t zeroinitializer, align 4, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!16, !17, !18}
-!llvm.ident = !{!19}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   120
-; CHECK-NEXT:        .long   120
-; CHECK-NEXT:        .long   41
-; CHECK-NEXT:        .long   1                       # BTF_KIND_UNION(id = 1)
-; CHECK-NEXT:        .long   83886082                # 0x5000002
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   5
-; CHECK-NEXT:        .long   5
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   0                       # BTF_KIND_ARRAY(id = 2)
-; CHECK-NEXT:        .long   50331648                # 0x3000000
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   3
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   7                       # BTF_KIND_INT(id = 3)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   32                      # 0x20
-; CHECK-NEXT:        .long   27                      # BTF_KIND_INT(id = 4)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   1
-; CHECK-NEXT:        .long   16777224                # 0x1000008
-; CHECK-NEXT:        .long   32                      # BTF_KIND_TYPEDEF(id = 5)
-; CHECK-NEXT:        .long   134217728               # 0x8000000
-; CHECK-NEXT:        .long   6
-; CHECK-NEXT:        .long   37                      # BTF_KIND_INT(id = 6)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   16777248                # 0x1000020
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .byte   116                     # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .byte   109                     # string offset=3
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .byte   110                     # string offset=5
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "__ARRAY_SIZE_TYPE__"   # string offset=7
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "char"                  # string offset=27
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "_int"                  # string offset=32
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .ascii  "int"                   # string offset=37
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 2, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = distinct !DICompositeType(tag: DW_TAG_union_type, name: "t", file: !3, line: 2, size: 32, elements: !7)
-!7 = !{!8, !13}
-!8 = !DIDerivedType(tag: DW_TAG_member, name: "m", scope: !6, file: !3, line: 2, baseType: !9, size: 32)
-!9 = !DICompositeType(tag: DW_TAG_array_type, baseType: !10, size: 32, elements: !11)
-!10 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
-!11 = !{!12}
-!12 = !DISubrange(count: 4)
-!13 = !DIDerivedType(tag: DW_TAG_member, name: "n", scope: !6, file: !3, line: 2, baseType: !14, size: 32)
-!14 = !DIDerivedType(tag: DW_TAG_typedef, name: "_int", file: !3, line: 1, baseType: !15)
-!15 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
-!16 = !{i32 2, !"Dwarf Version", i32 4}
-!17 = !{i32 2, !"Debug Info Version", i32 3}
-!18 = !{i32 1, !"wchar_size", i32 4}
-!19 = !{!"clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)"}
diff --git a/llvm/test/DebugInfo/BTF/ushort.ll b/llvm/test/DebugInfo/BTF/ushort.ll
deleted file mode 100644
index 2eb28a31..0000000
--- a/llvm/test/DebugInfo/BTF/ushort.ll
+++ /dev/null
@@ -1,53 +0,0 @@
-; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
-
-; Source code:
-;   unsigned short a;
-; Compilation flag:
-;   clang -target bpf -O2 -g -S -emit-llvm t.c
-
-@a = common dso_local local_unnamed_addr global i16 0, align 2, !dbg !0
-
-!llvm.dbg.cu = !{!2}
-!llvm.module.flags = !{!7, !8, !9}
-!llvm.ident = !{!10}
-
-; CHECK:             .section        .BTF,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   16
-; CHECK-NEXT:        .long   16
-; CHECK-NEXT:        .long   16
-; CHECK-NEXT:        .long   1                       # BTF_KIND_INT(id = 1)
-; CHECK-NEXT:        .long   16777216                # 0x1000000
-; CHECK-NEXT:        .long   2
-; CHECK-NEXT:        .long   16                      # 0x10
-; CHECK-NEXT:        .byte   0                       # string offset=0
-; CHECK-NEXT:        .ascii  "unsigned short"        # string offset=1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .section        .BTF.ext,"",@progbits
-; CHECK-NEXT:        .short  60319                   # 0xeb9f
-; CHECK-NEXT:        .byte   1
-; CHECK-NEXT:        .byte   0
-; CHECK-NEXT:        .long   24
-; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   4
-; CHECK-NEXT:        .long   8                       # FuncInfo
-; CHECK-NEXT:        .long   16                      # LineInfo
-
-!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
-!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
-!3 = !DIFile(filename: "t.c", directory: "/home/yhs/tmp")
-!4 = !{}
-!5 = !{!0}
-!6 = !DIBasicType(name: "unsigned short", size: 16, encoding: DW_ATE_unsigned)
-!7 = !{i32 2, !"Dwarf Version", i32 4}
-!8 = !{i32 2, !"Debug Info Version", i32 3}
-!9 = !{i32 1, !"wchar_size", i32 4}
-!10 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}