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move archive-specific stuff out of bcreader into archive library.

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llvm-svn: 34022
This commit is contained in:
Chris Lattner 2007-02-07 23:53:17 +00:00
parent 1c17d65878
commit 3cac8eac4e
4 changed files with 80 additions and 100 deletions
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30
include/llvm/Bytecode/Reader.h
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@ -81,36 +81,6 @@ Module* ParseBytecodeBuffer(
std::string *ErrMsg = 0 ///< Optional place to return an error message
);
/// This function will read only the necessary parts of a bytecode file in order
/// to obtain a list of externally visible global symbols that the bytecode
/// module defines. This is used for archiving and linking when only the list
/// of symbols the module defines is needed.
/// @returns true on error, false otherwise
/// @brief Get a bytecode file's externally visibile defined global symbols.
bool GetBytecodeSymbols(
const sys::Path& fileName, ///< Filename to read bytecode from
std::vector<std::string>& syms, ///< Vector to return symbols in
BCDecompressor_t *BCDC = Compressor::decompressToNewBuffer,
std::string* ErrMsg = 0 ///< Optional error message holder
);
/// This function will read only the necessary parts of a bytecode buffer in
/// order to obtain a list of externally visible global symbols that the
/// bytecode module defines. This is used for archiving and linking when only
/// the list of symbols the module defines is needed and the bytecode is
/// already in memory.
/// @returns the ModuleProvider on success, 0 if the bytecode can't be parsed
/// @brief Get a bytecode file's externally visibile defined global symbols.
ModuleProvider* GetBytecodeSymbols(
const unsigned char*Buffer, ///< The buffer to be parsed
unsigned Length, ///< The length of \p Buffer
const std::string& ModuleID, ///< An identifier for the module
std::vector<std::string>& symbols, ///< The symbols defined in the module
BCDecompressor_t *BCDC = Compressor::decompressToNewBuffer,
std::string* ErrMsg = 0 ///< Optional error message holder
);
} // End llvm namespace
#endif

70
lib/Bytecode/Archive/Archive.cpp
View File

@ -14,8 +14,9 @@
#include "ArchiveInternals.h"
#include "llvm/ModuleProvider.h"
#include "llvm/Module.h"
#include "llvm/Bytecode/Reader.h"
#include "llvm/System/Process.h"
using namespace llvm;
// getMemberSize - compute the actual physical size of the file member as seen
@ -190,3 +191,70 @@ Archive::~Archive() {
cleanUpMemory();
}
static void getSymbols(Module*M, std::vector<std::string>& symbols) {
// Loop over global variables
for (Module::global_iterator GI = M->global_begin(), GE=M->global_end(); GI != GE; ++GI)
if (!GI->isDeclaration() && !GI->hasInternalLinkage())
if (!GI->getName().empty())
symbols.push_back(GI->getName());
// Loop over functions.
for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; ++FI)
if (!FI->isDeclaration() && !FI->hasInternalLinkage())
if (!FI->getName().empty())
symbols.push_back(FI->getName());
}
// Get just the externally visible defined symbols from the bytecode
bool llvm::GetBytecodeSymbols(const sys::Path& fName,
std::vector<std::string>& symbols,
BCDecompressor_t *BCDC,
std::string* ErrMsg) {
ModuleProvider *MP = getBytecodeModuleProvider(fName.toString(), BCDC,ErrMsg);
if (!MP)
return true;
// Get the module from the provider
Module* M = MP->materializeModule();
if (M == 0) {
delete MP;
return true;
}
// Get the symbols
getSymbols(M, symbols);
// Done with the module.
delete MP;
return true;
}
ModuleProvider*
llvm::GetBytecodeSymbols(const unsigned char*Buffer, unsigned Length,
const std::string& ModuleID,
std::vector<std::string>& symbols,
BCDecompressor_t *BCDC,
std::string* ErrMsg) {
// Get the module provider
ModuleProvider* MP =
getBytecodeBufferModuleProvider(Buffer, Length, ModuleID, BCDC, ErrMsg, 0);
if (!MP)
return 0;
// Get the module from the provider
Module* M = MP->materializeModule();
if (M == 0) {
delete MP;
return 0;
}
// Get the symbols
getSymbols(M, symbols);
// Done with the module. Note that ModuleProvider will delete the
// Module when it is deleted. Also note that its the caller's responsibility
// to delete the ModuleProvider.
return MP;
}

13
lib/Bytecode/Archive/ArchiveInternals.h
View File

@ -65,9 +65,18 @@ namespace llvm {
bool checkSignature() {
return 0 == memcmp(fmag, ARFILE_MEMBER_MAGIC,2);
}
};
// Get just the externally visible defined symbols from the bytecode
bool GetBytecodeSymbols(const sys::Path& fName,
std::vector<std::string>& symbols,
BCDecompressor_t *BCDC, std::string* ErrMsg);
ModuleProvider* GetBytecodeSymbols(const unsigned char*Buffer,unsigned Length,
const std::string& ModuleID,
std::vector<std::string>& symbols,
BCDecompressor_t *BCDC,
std::string* ErrMsg);
}
#endif

67
lib/Bytecode/Reader/ReaderWrappers.cpp
View File

@ -254,70 +254,3 @@ Module *llvm::ParseBytecodeFile(const std::string &Filename,
delete MP;
return M;
}
static void getSymbols(Module*M, std::vector<std::string>& symbols) {
// Loop over global variables
for (Module::global_iterator GI = M->global_begin(), GE=M->global_end(); GI != GE; ++GI)
if (!GI->isDeclaration() && !GI->hasInternalLinkage())
if (!GI->getName().empty())
symbols.push_back(GI->getName());
// Loop over functions.
for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; ++FI)
if (!FI->isDeclaration() && !FI->hasInternalLinkage())
if (!FI->getName().empty())
symbols.push_back(FI->getName());
}
// Get just the externally visible defined symbols from the bytecode
bool llvm::GetBytecodeSymbols(const sys::Path& fName,
std::vector<std::string>& symbols,
BCDecompressor_t *BCDC,
std::string* ErrMsg) {
ModuleProvider *MP = getBytecodeModuleProvider(fName.toString(), BCDC,ErrMsg);
if (!MP)
return true;
// Get the module from the provider
Module* M = MP->materializeModule();
if (M == 0) {
delete MP;
return true;
}
// Get the symbols
getSymbols(M, symbols);
// Done with the module.
delete MP;
return true;
}
ModuleProvider*
llvm::GetBytecodeSymbols(const unsigned char*Buffer, unsigned Length,
const std::string& ModuleID,
std::vector<std::string>& symbols,
BCDecompressor_t *BCDC,
std::string* ErrMsg) {
// Get the module provider
ModuleProvider* MP =
getBytecodeBufferModuleProvider(Buffer, Length, ModuleID, BCDC, ErrMsg, 0);
if (!MP)
return 0;
// Get the module from the provider
Module* M = MP->materializeModule();
if (M == 0) {
delete MP;
return 0;
}
// Get the symbols
getSymbols(M, symbols);
// Done with the module. Note that ModuleProvider will delete the
// Module when it is deleted. Also note that its the caller's responsibility
// to delete the ModuleProvider.
return MP;
}