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speed up Archive::isBytecodeArchive in the case when the archive doesn't have

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an llvm-ranlib symtab.  This speeds up gccld -native on an almost empty .o file
from 1.63s to 0.18s.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23406 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2005-09-23 06:22:58 +00:00
parent 7b5634d213
commit 7c439929bc
2 changed files with 48 additions and 36 deletions
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32
lib/Archive/ArchiveReader.cpp
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@@ -504,13 +504,9 @@ Archive::findModulesDefiningSymbols(std::set<std::string>& symbols,
} }
} }
bool bool Archive::isBytecodeArchive() {
Archive::isBytecodeArchive() // Make sure the symTab has been loaded. In most cases this should have been
{ // done when the archive was constructed, but still, this is just in case.
//Make sure the symTab has been loaded...
//in most cases this should have been done
//when the archive was constructed, but still,
//this is just in case.
if (!symTab.size()) if (!symTab.size())
loadSymbolTable(); loadSymbolTable();
@@ -524,11 +520,21 @@ Archive::isBytecodeArchive()
std::vector<Module *> Modules; std::vector<Module *> Modules;
std::string ErrorMessage; std::string ErrorMessage;
//If getAllModules gives an error then this isn't a proper // Scan the archive, trying to load a bytecode member. We only load one to
//bytecode archive // see if this works.
if ( getAllModules( Modules, &ErrorMessage ) ) return false; for (iterator I = begin(), E = end(); I != E; ++I) {
if (!I->isBytecode() && !I->isCompressedBytecode())
continue;
//Finally, if we find any bytecode modules then this is a proper std::string FullMemberName =
//bytecode archive archPath.toString() + "(" + I->getPath().toString() + ")";
return Modules.size(); Module* M = ParseBytecodeBuffer((const unsigned char*)I->getData(),
I->getSize(), FullMemberName);
if (!M)
return false; // Couldn't parse bytecode, not a bytecode archive.
delete M;
return true;
}
return false;
} }

32
lib/Bytecode/Archive/ArchiveReader.cpp
View File

@@ -504,13 +504,9 @@ Archive::findModulesDefiningSymbols(std::set<std::string>& symbols,
} }
} }
bool bool Archive::isBytecodeArchive() {
Archive::isBytecodeArchive() // Make sure the symTab has been loaded. In most cases this should have been
{ // done when the archive was constructed, but still, this is just in case.
//Make sure the symTab has been loaded...
//in most cases this should have been done
//when the archive was constructed, but still,
//this is just in case.
if (!symTab.size()) if (!symTab.size())
loadSymbolTable(); loadSymbolTable();
@@ -524,11 +520,21 @@ Archive::isBytecodeArchive()
std::vector<Module *> Modules; std::vector<Module *> Modules;
std::string ErrorMessage; std::string ErrorMessage;
//If getAllModules gives an error then this isn't a proper // Scan the archive, trying to load a bytecode member. We only load one to
//bytecode archive // see if this works.
if ( getAllModules( Modules, &ErrorMessage ) ) return false; for (iterator I = begin(), E = end(); I != E; ++I) {
if (!I->isBytecode() && !I->isCompressedBytecode())
continue;
//Finally, if we find any bytecode modules then this is a proper std::string FullMemberName =
//bytecode archive archPath.toString() + "(" + I->getPath().toString() + ")";
return Modules.size(); Module* M = ParseBytecodeBuffer((const unsigned char*)I->getData(),
I->getSize(), FullMemberName);
if (!M)
return false; // Couldn't parse bytecode, not a bytecode archive.
delete M;
return true;
}
return false;
} }