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-rw-r--r--tools/lto/LTOModule.cpp83
-rw-r--r--tools/lto/LTOModule.h8
2 files changed, 55 insertions, 36 deletions
diff --git a/tools/lto/LTOModule.cpp b/tools/lto/LTOModule.cpp
index 1c06f27..97e4e54 100644
--- a/tools/lto/LTOModule.cpp
+++ b/tools/lto/LTOModule.cpp
@@ -204,6 +204,8 @@ void LTOModule::addObjCClass(GlobalVariable *clgv) {
const char *symbolName = entry.getKey().data();
info.name = symbolName;
info.attributes = LTO_SYMBOL_DEFINITION_UNDEFINED;
+ info.isFunction = false;
+ info.symbol = clgv;
entry.setValue(info);
}
}
@@ -213,11 +215,13 @@ void LTOModule::addObjCClass(GlobalVariable *clgv) {
if (objcClassNameFromExpression(c->getOperand(2), className)) {
StringSet::value_type &entry = _defines.GetOrCreateValue(className);
entry.setValue(1);
+
NameAndAttributes info;
info.name = entry.getKey().data();
- info.attributes = lto_symbol_attributes(LTO_SYMBOL_PERMISSIONS_DATA |
- LTO_SYMBOL_DEFINITION_REGULAR |
- LTO_SYMBOL_SCOPE_DEFAULT);
+ info.attributes = LTO_SYMBOL_PERMISSIONS_DATA |
+ LTO_SYMBOL_DEFINITION_REGULAR | LTO_SYMBOL_SCOPE_DEFAULT;
+ info.isFunction = false;
+ info.symbol = clgv;
_symbols.push_back(info);
}
}
@@ -242,6 +246,8 @@ void LTOModule::addObjCCategory(GlobalVariable *clgv) {
const char *symbolName = entry.getKey().data();
info.name = symbolName;
info.attributes = LTO_SYMBOL_DEFINITION_UNDEFINED;
+ info.isFunction = false;
+ info.symbol = clgv;
entry.setValue(info);
}
@@ -260,6 +266,8 @@ void LTOModule::addObjCClassRef(GlobalVariable *clgv) {
const char *symbolName = entry.getKey().data();
info.name = symbolName;
info.attributes = LTO_SYMBOL_DEFINITION_UNDEFINED;
+ info.isFunction = false;
+ info.symbol = clgv;
entry.setValue(info);
}
@@ -332,9 +340,9 @@ void LTOModule::addDefinedSymbol(GlobalValue *def, bool isFunction) {
uint32_t attr = align ? CountTrailingZeros_32(def->getAlignment()) : 0;
// set permissions part
- if (isFunction)
+ if (isFunction) {
attr |= LTO_SYMBOL_PERMISSIONS_CODE;
- else {
+ } else {
GlobalVariable *gv = dyn_cast<GlobalVariable>(def);
if (gv && gv->isConstant())
attr |= LTO_SYMBOL_PERMISSIONS_RODATA;
@@ -366,15 +374,19 @@ void LTOModule::addDefinedSymbol(GlobalValue *def, bool isFunction) {
else
attr |= LTO_SYMBOL_SCOPE_INTERNAL;
- // add to table of symbols
- NameAndAttributes info;
StringSet::value_type &entry = _defines.GetOrCreateValue(Buffer);
entry.setValue(1);
+ // fill information structure
+ NameAndAttributes info;
StringRef Name = entry.getKey();
info.name = Name.data();
assert(info.name[Name.size()] == '\0');
- info.attributes = (lto_symbol_attributes)attr;
+ info.attributes = attr;
+ info.isFunction = isFunction;
+ info.symbol = def;
+
+ // add to table of symbols
_symbols.push_back(info);
}
@@ -389,13 +401,13 @@ void LTOModule::addAsmGlobalSymbol(const char *name,
return;
entry.setValue(1);
- const char *symbolName = entry.getKey().data();
- uint32_t attr = LTO_SYMBOL_DEFINITION_REGULAR;
- attr |= scope;
- NameAndAttributes info;
- info.name = symbolName;
- info.attributes = (lto_symbol_attributes)attr;
- _symbols.push_back(info);
+
+ NameAndAttributes &info = _undefines[entry.getKey().data()];
+
+ if (info.isFunction)
+ addDefinedFunctionSymbol(cast<Function>(info.symbol));
+ else
+ addDefinedDataSymbol(info.symbol);
}
/// addAsmGlobalSymbolUndef - Add a global symbol from module-level ASM to the
@@ -414,14 +426,16 @@ void LTOModule::addAsmGlobalSymbolUndef(const char *name) {
attr |= LTO_SYMBOL_SCOPE_DEFAULT;
NameAndAttributes info;
info.name = entry.getKey().data();
- info.attributes = (lto_symbol_attributes)attr;
+ info.attributes = attr;
+ info.isFunction = false;
+ info.symbol = 0;
entry.setValue(info);
}
/// addPotentialUndefinedSymbol - Add a symbol which isn't defined just yet to a
/// list to be resolved later.
-void LTOModule::addPotentialUndefinedSymbol(GlobalValue *decl) {
+void LTOModule::addPotentialUndefinedSymbol(GlobalValue *decl, bool isFunc) {
// ignore all llvm.* symbols
if (decl->getName().startswith("llvm."))
return;
@@ -449,6 +463,9 @@ void LTOModule::addPotentialUndefinedSymbol(GlobalValue *decl) {
else
info.attributes = LTO_SYMBOL_DEFINITION_UNDEFINED;
+ info.isFunction = isFunc;
+ info.symbol = decl;
+
entry.setValue(info);
}
@@ -605,7 +622,7 @@ namespace {
}
virtual void FinishImpl() {}
};
-}
+} // end anonymous namespace
/// addAsmGlobalSymbols - Add global symbols from module-level ASM to the
/// defined or undefined lists.
@@ -668,7 +685,7 @@ bool LTOModule::parseSymbols(std::string &errMsg) {
// add functions
for (Module::iterator f = _module->begin(), e = _module->end(); f != e; ++f) {
if (isDeclaration(*f))
- addPotentialUndefinedSymbol(f);
+ addPotentialUndefinedSymbol(f, true);
else
addDefinedFunctionSymbol(f);
}
@@ -677,7 +694,7 @@ bool LTOModule::parseSymbols(std::string &errMsg) {
for (Module::global_iterator v = _module->global_begin(),
e = _module->global_end(); v != e; ++v) {
if (isDeclaration(*v))
- addPotentialUndefinedSymbol(v);
+ addPotentialUndefinedSymbol(v, false);
else
addDefinedDataSymbol(v);
}
@@ -687,24 +704,24 @@ bool LTOModule::parseSymbols(std::string &errMsg) {
return true;
// add aliases
- for (Module::alias_iterator i = _module->alias_begin(),
- e = _module->alias_end(); i != e; ++i) {
- if (isDeclaration(*i->getAliasedGlobal()))
+ for (Module::alias_iterator a = _module->alias_begin(),
+ e = _module->alias_end(); a != e; ++a) {
+ if (isDeclaration(*a->getAliasedGlobal()))
// Is an alias to a declaration.
- addPotentialUndefinedSymbol(i);
+ addPotentialUndefinedSymbol(a, false);
else
- addDefinedDataSymbol(i);
+ addDefinedDataSymbol(a);
}
// make symbols for all undefines
- for (StringMap<NameAndAttributes>::iterator it=_undefines.begin(),
- e = _undefines.end(); it != e; ++it) {
- // if this symbol also has a definition, then don't make an undefine
- // because it is a tentative definition
- if (_defines.count(it->getKey()) == 0) {
- NameAndAttributes info = it->getValue();
- _symbols.push_back(info);
- }
+ for (StringMap<NameAndAttributes>::iterator u =_undefines.begin(),
+ e = _undefines.end(); u != e; ++u) {
+ // If this symbol also has a definition, then don't make an undefine because
+ // it is a tentative definition.
+ if (_defines.count(u->getKey())) continue;
+ NameAndAttributes info = u->getValue();
+ _symbols.push_back(info);
}
+
return false;
}
diff --git a/tools/lto/LTOModule.h b/tools/lto/LTOModule.h
index 2c52948..e5f6dea 100644
--- a/tools/lto/LTOModule.h
+++ b/tools/lto/LTOModule.h
@@ -43,8 +43,10 @@ private:
typedef llvm::StringMap<uint8_t> StringSet;
struct NameAndAttributes {
- const char *name;
- uint32_t attributes;
+ const char *name;
+ uint32_t attributes;
+ bool isFunction;
+ llvm::GlobalValue *symbol;
};
llvm::OwningPtr<llvm::Module> _module;
@@ -134,7 +136,7 @@ private:
/// addPotentialUndefinedSymbol - Add a symbol which isn't defined just yet
/// to a list to be resolved later.
- void addPotentialUndefinedSymbol(llvm::GlobalValue *dcl);
+ void addPotentialUndefinedSymbol(llvm::GlobalValue *dcl, bool isFunc);
/// addDefinedSymbol - Add a defined symbol to the list.
void addDefinedSymbol(llvm::GlobalValue *def, bool isFunction);
generated by cgit v1.1 at 2025-01-10 21:14:43 +0000