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llvm-mirror/lib/DebugInfo/PDB/CMakeLists.txt
Zachary Turner 5f415496c7 [PDB] Don't build the entire source file list up front.
I tried to run llvm-pdbdump on a very large (~1.5GB) PDB to
try and identify show-stopping performance problems.  This
patch addresses the first such problem.

When loading the DBI stream, before anyone has even tried to
access a single record, we build an in memory map of every
source file for every module.  In the particular PDB I was
using, this was over 85 million files.  Specifically, the
complexity is O(m*n) where m is the number of modules and
n is the average number of source files (including headers)
per module.

The whole reason for doing this was so that we could have
constant time access to any module and any of its source
file lists.  However, we can still get O(1) access to the
source file list for a given module with a simple O(m)
precomputation, and access to the list of modules is
already O(1) anyway.

So this patches reduces the O(m*n) up-front precomputation
to an O(m) one, where n is ~6,500 and n*m is about 85 million
in my pathological test case.

Differential Revision: https://reviews.llvm.org/D32870

llvm-svn: 302205
2017-05-04 23:53:29 +00:00

113 lines
3.0 KiB
CMake

macro(add_pdb_impl_folder group)
list(APPEND PDB_IMPL_SOURCES ${ARGN})
source_group(${group} FILES ${ARGN})
endmacro()
if(LLVM_ENABLE_DIA_SDK)
include_directories(${MSVC_DIA_SDK_DIR}/include)
set(LIBPDB_LINK_FOLDERS "${MSVC_DIA_SDK_DIR}\\lib")
if (CMAKE_SIZEOF_VOID_P EQUAL 8)
set(LIBPDB_LINK_FOLDERS "${LIBPDB_LINK_FOLDERS}\\amd64")
endif()
file(TO_CMAKE_PATH "${LIBPDB_LINK_FOLDERS}\\diaguids.lib" LIBPDB_ADDITIONAL_LIBRARIES)
add_pdb_impl_folder(DIA
DIA/DIADataStream.cpp
DIA/DIAEnumDebugStreams.cpp
DIA/DIAEnumLineNumbers.cpp
DIA/DIAEnumSourceFiles.cpp
DIA/DIAEnumSymbols.cpp
DIA/DIAError.cpp
DIA/DIALineNumber.cpp
DIA/DIARawSymbol.cpp
DIA/DIASession.cpp
DIA/DIASourceFile.cpp
)
set(LIBPDB_ADDITIONAL_HEADER_DIRS "${LLVM_MAIN_INCLUDE_DIR}/llvm/DebugInfo/PDB/DIA")
endif()
add_pdb_impl_folder(Native
Native/DbiModuleDescriptor.cpp
Native/DbiModuleDescriptorBuilder.cpp
Native/DbiModuleList.cpp
Native/DbiStream.cpp
Native/DbiStreamBuilder.cpp
Native/EnumTables.cpp
Native/GlobalsStream.cpp
Native/GSI.cpp
Native/Hash.cpp
Native/HashTable.cpp
Native/InfoStream.cpp
Native/InfoStreamBuilder.cpp
Native/ModuleDebugStream.cpp
Native/NativeCompilandSymbol.cpp
Native/NativeEnumModules.cpp
Native/NativeExeSymbol.cpp
Native/NativeRawSymbol.cpp
Native/NamedStreamMap.cpp
Native/NativeSession.cpp
Native/PDBFile.cpp
Native/PDBFileBuilder.cpp
Native/PDBStringTable.cpp
Native/PDBStringTableBuilder.cpp
Native/PDBTypeServerHandler.cpp
Native/PublicsStream.cpp
Native/RawError.cpp
Native/SymbolStream.cpp
Native/TpiHashing.cpp
Native/TpiStream.cpp
Native/TpiStreamBuilder.cpp)
list(APPEND LIBPDB_ADDITIONAL_HEADER_DIRS "${LLVM_MAIN_INCLUDE_DIR}/llvm/DebugInfo/PDB/Native")
list(APPEND LIBPDB_ADDITIONAL_HEADER_DIRS "${LLVM_MAIN_INCLUDE_DIR}/llvm/DebugInfo/PDB")
add_llvm_library(LLVMDebugInfoPDB
GenericError.cpp
IPDBSourceFile.cpp
PDB.cpp
PDBContext.cpp
PDBExtras.cpp
PDBInterfaceAnchors.cpp
PDBSymbol.cpp
PDBSymbolAnnotation.cpp
PDBSymbolBlock.cpp
PDBSymbolCompiland.cpp
PDBSymbolCompilandDetails.cpp
PDBSymbolCompilandEnv.cpp
PDBSymbolCustom.cpp
PDBSymbolData.cpp
PDBSymbolExe.cpp
PDBSymbolFunc.cpp
PDBSymbolFuncDebugEnd.cpp
PDBSymbolFuncDebugStart.cpp
PDBSymbolLabel.cpp
PDBSymbolPublicSymbol.cpp
PDBSymbolThunk.cpp
PDBSymbolTypeArray.cpp
PDBSymbolTypeBaseClass.cpp
PDBSymbolTypeBuiltin.cpp
PDBSymbolTypeCustom.cpp
PDBSymbolTypeDimension.cpp
PDBSymbolTypeEnum.cpp
PDBSymbolTypeFriend.cpp
PDBSymbolTypeFunctionArg.cpp
PDBSymbolTypeFunctionSig.cpp
PDBSymbolTypeManaged.cpp
PDBSymbolTypePointer.cpp
PDBSymbolTypeTypedef.cpp
PDBSymbolTypeUDT.cpp
PDBSymbolTypeVTable.cpp
PDBSymbolTypeVTableShape.cpp
PDBSymbolUnknown.cpp
PDBSymbolUsingNamespace.cpp
PDBSymDumper.cpp
UDTLayout.cpp
${PDB_IMPL_SOURCES}
ADDITIONAL_HEADER_DIRS
${LIBPDB_ADDITIONAL_HEADER_DIRS}
)
target_link_libraries(LLVMDebugInfoPDB INTERFACE "${LIBPDB_ADDITIONAL_LIBRARIES}")