aprantl created this revision.
aprantl added reviewers: JDevlieghere, jasonmolenda, labath.
Herald added subscribers: MaskRay, arichardson, emaste.
Herald added a reviewer: espindola.
Testing whether a name is mangled or not is extremely cheap and can be done by
looking at the first two characters. `Mangled` knows how to do it. On the flip
side, many call sites that currently pass in an `is_mangled` determination do
not know how to correctly do it (for example, they leave out Swift mangling
prefixes).
This patch removes this entry point and just forced Mangled to determine the
mangledness of a string itself.
https://reviews.llvm.org/D68674
Files:
lldb/include/lldb/Core/Mangled.h
lldb/include/lldb/Symbol/Function.h
lldb/include/lldb/Symbol/Symbol.h
lldb/source/API/SBType.cpp
lldb/source/Core/Mangled.cpp
lldb/source/Expression/IRExecutionUnit.cpp
lldb/source/Plugins/LanguageRuntime/CPlusPlus/ItaniumABI/ItaniumABILanguageRuntime.cpp
lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
lldb/source/Plugins/SymbolFile/Breakpad/SymbolFileBreakpad.cpp
lldb/source/Plugins/SymbolFile/PDB/SymbolFilePDB.cpp
lldb/source/Symbol/Function.cpp
lldb/source/Symbol/Symbol.cpp
Index: lldb/source/Symbol/Symbol.cpp
===================================================================
--- lldb/source/Symbol/Symbol.cpp
+++ lldb/source/Symbol/Symbol.cpp
@@ -31,9 +31,8 @@
m_is_weak(false), m_type(eSymbolTypeInvalid), m_mangled(), m_addr_range(),
m_flags() {}
-Symbol::Symbol(uint32_t symID, const char *name, bool name_is_mangled,
- SymbolType type, bool external, bool is_debug,
- bool is_trampoline, bool is_artificial,
+Symbol::Symbol(uint32_t symID, llvm::StringRef name, SymbolType type, bool external,
+ bool is_debug, bool is_trampoline, bool is_artificial,
const lldb::SectionSP §ion_sp, addr_t offset, addr_t size,
bool size_is_valid, bool contains_linker_annotations,
uint32_t flags)
@@ -42,9 +41,9 @@
m_is_debug(is_debug), m_is_external(external), m_size_is_sibling(false),
m_size_is_synthesized(false), m_size_is_valid(size_is_valid || size > 0),
m_demangled_is_synthesized(false),
- m_contains_linker_annotations(contains_linker_annotations),
+ m_contains_linker_annotations(contains_linker_annotations),
m_is_weak(false), m_type(type),
- m_mangled(ConstString(name), name_is_mangled),
+ m_mangled(name),
m_addr_range(section_sp, offset, size), m_flags(flags) {}
Symbol::Symbol(uint32_t symID, const Mangled &mangled, SymbolType type,
Index: lldb/source/Symbol/Function.cpp
===================================================================
--- lldb/source/Symbol/Function.cpp
+++ lldb/source/Symbol/Function.cpp
@@ -59,10 +59,11 @@
return m_name.MemorySize() + m_declaration.MemorySize();
}
-InlineFunctionInfo::InlineFunctionInfo(const char *name, const char *mangled,
+InlineFunctionInfo::InlineFunctionInfo(const char *name,
+ llvm::StringRef mangled,
const Declaration *decl_ptr,
const Declaration *call_decl_ptr)
- : FunctionInfo(name, decl_ptr), m_mangled(ConstString(mangled), true),
+ : FunctionInfo(name, decl_ptr), m_mangled(mangled),
m_call_decl(call_decl_ptr) {}
InlineFunctionInfo::InlineFunctionInfo(ConstString name,
Index: lldb/source/Plugins/SymbolFile/PDB/SymbolFilePDB.cpp
===================================================================
--- lldb/source/Plugins/SymbolFile/PDB/SymbolFilePDB.cpp
+++ lldb/source/Plugins/SymbolFile/PDB/SymbolFilePDB.cpp
@@ -1422,7 +1422,6 @@
symtab.AddSymbol(
Symbol(pub_symbol->getSymIndexId(), // symID
pub_symbol->getName().c_str(), // name
- true, // name_is_mangled
pub_symbol->isCode() ? eSymbolTypeCode : eSymbolTypeData, // type
true, // external
false, // is_debug
Index: lldb/source/Plugins/SymbolFile/Breakpad/SymbolFileBreakpad.cpp
===================================================================
--- lldb/source/Plugins/SymbolFile/Breakpad/SymbolFileBreakpad.cpp
+++ lldb/source/Plugins/SymbolFile/Breakpad/SymbolFileBreakpad.cpp
@@ -340,8 +340,8 @@
return;
}
symbols.try_emplace(
- address, /*symID*/ 0, Mangled(name, /*is_mangled*/ false),
- eSymbolTypeCode, /*is_global*/ true, /*is_debug*/ false,
+ address, /*symID*/ 0, Mangled(name), eSymbolTypeCode,
+ /*is_global*/ true, /*is_debug*/ false,
/*is_trampoline*/ false, /*is_artificial*/ false,
AddressRange(section_sp, address - section_sp->GetFileAddress(),
size.getValueOr(0)),
Index: lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
===================================================================
--- lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
+++ lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
@@ -2211,8 +2211,6 @@
bool is_global = symbol.getBinding() == STB_GLOBAL;
uint32_t flags = symbol.st_other << 8 | symbol.st_info | additional_flags;
- bool is_mangled = (symbol_name[0] == '_' && symbol_name[1] == 'Z');
-
llvm::StringRef symbol_ref(symbol_name);
// Symbol names may contain @VERSION suffixes. Find those and strip them
@@ -2220,7 +2218,7 @@
size_t version_pos = symbol_ref.find('@');
bool has_suffix = version_pos != llvm::StringRef::npos;
llvm::StringRef symbol_bare = symbol_ref.substr(0, version_pos);
- Mangled mangled(ConstString(symbol_bare), is_mangled);
+ Mangled mangled(symbol_bare);
// Now append the suffix back to mangled and unmangled names. Only do it if
// the demangling was successful (string is not empty).
@@ -2451,14 +2449,11 @@
break;
const char *symbol_name = strtab_data.PeekCStr(symbol.st_name);
- bool is_mangled =
- symbol_name ? (symbol_name[0] == '_' && symbol_name[1] == 'Z') : false;
uint64_t plt_index = plt_offset + i * plt_entsize;
Symbol jump_symbol(
i + start_id, // Symbol table index
symbol_name, // symbol name.
- is_mangled, // is the symbol name mangled?
eSymbolTypeTrampoline, // Type of this symbol
false, // Is this globally visible?
false, // Is this symbol debug info?
@@ -2856,7 +2851,6 @@
Symbol eh_symbol(
symbol_id, // Symbol table index.
symbol_name, // Symbol name.
- false, // Is the symbol name mangled?
eSymbolTypeCode, // Type of this symbol.
true, // Is this globally visible?
false, // Is this symbol debug info?
Index: lldb/source/Plugins/LanguageRuntime/CPlusPlus/ItaniumABI/ItaniumABILanguageRuntime.cpp
===================================================================
--- lldb/source/Plugins/LanguageRuntime/CPlusPlus/ItaniumABI/ItaniumABILanguageRuntime.cpp
+++ lldb/source/Plugins/LanguageRuntime/CPlusPlus/ItaniumABI/ItaniumABILanguageRuntime.cpp
@@ -356,7 +356,7 @@
if (name.startswith("__Z"))
name = name.drop_front();
- Mangled mangled(name, true);
+ Mangled mangled(name);
if (mangled.GuessLanguage() == lldb::eLanguageTypeC_plus_plus) {
ConstString demangled(
mangled.GetDisplayDemangledName(lldb::eLanguageTypeC_plus_plus));
Index: lldb/source/Expression/IRExecutionUnit.cpp
===================================================================
--- lldb/source/Expression/IRExecutionUnit.cpp
+++ lldb/source/Expression/IRExecutionUnit.cpp
@@ -669,7 +669,7 @@
std::vector<ConstString> param_matches;
for (size_t i = 0; i < alternates.size(); i++) {
ConstString alternate_mangled_name = alternates[i];
- Mangled mangled(alternate_mangled_name, true);
+ Mangled mangled(alternate_mangled_name);
ConstString demangled = mangled.GetDemangledName(lang_type);
CPlusPlusLanguage::MethodName alternate_cpp_name(demangled);
@@ -717,7 +717,7 @@
ConstString name = C_spec.name;
if (CPlusPlusLanguage::IsCPPMangledName(name.GetCString())) {
- Mangled mangled(name, true);
+ Mangled mangled(name);
ConstString demangled =
mangled.GetDemangledName(lldb::eLanguageTypeC_plus_plus);
Index: lldb/source/Core/Mangled.cpp
===================================================================
--- lldb/source/Core/Mangled.cpp
+++ lldb/source/Core/Mangled.cpp
@@ -125,19 +125,6 @@
#pragma mark Mangled
-// Constructor with an optional string and a boolean indicating if it is the
-// mangled version.
-Mangled::Mangled(ConstString s, bool mangled)
- : m_mangled(), m_demangled() {
- if (s)
- SetValue(s, mangled);
-}
-
-Mangled::Mangled(llvm::StringRef name, bool is_mangled) {
- if (!name.empty())
- SetValue(ConstString(name), is_mangled);
-}
-
Mangled::Mangled(ConstString s) : m_mangled(), m_demangled() {
if (s)
SetValue(s);
@@ -148,9 +135,6 @@
SetValue(ConstString(name));
}
-// Destructor
-Mangled::~Mangled() {}
-
// Convert to pointer operator. This allows code to check any Mangled objects
// to see if they contain anything valid using code such as:
//
Index: lldb/source/API/SBType.cpp
===================================================================
--- lldb/source/API/SBType.cpp
+++ lldb/source/API/SBType.cpp
@@ -799,7 +799,7 @@
if (m_opaque_sp) {
ConstString mangled_str = m_opaque_sp->GetMangledName();
if (mangled_str) {
- Mangled mangled(mangled_str, true);
+ Mangled mangled(mangled_str);
return mangled.GetDemangledName(mangled.GuessLanguage()).GetCString();
}
}
Index: lldb/include/lldb/Symbol/Symbol.h
===================================================================
--- lldb/include/lldb/Symbol/Symbol.h
+++ lldb/include/lldb/Symbol/Symbol.h
@@ -24,9 +24,8 @@
// drastically different meanings and sorting requirements.
Symbol();
- Symbol(uint32_t symID, const char *name, bool name_is_mangled,
- lldb::SymbolType type, bool external, bool is_debug,
- bool is_trampoline, bool is_artificial,
+ Symbol(uint32_t symID, llvm::StringRef name, lldb::SymbolType type,
+ bool external, bool is_debug, bool is_trampoline, bool is_artificial,
const lldb::SectionSP §ion_sp, lldb::addr_t value,
lldb::addr_t size, bool size_is_valid,
bool contains_linker_annotations, uint32_t flags);
Index: lldb/include/lldb/Symbol/Function.h
===================================================================
--- lldb/include/lldb/Symbol/Function.h
+++ lldb/include/lldb/Symbol/Function.h
@@ -140,7 +140,7 @@
/// \param[in] call_decl_ptr
/// Optional calling location declaration information that
/// describes from where this inlined function was called.
- InlineFunctionInfo(const char *name, const char *mangled,
+ InlineFunctionInfo(const char *name, llvm::StringRef mangled,
const Declaration *decl_ptr,
const Declaration *call_decl_ptr);
Index: lldb/include/lldb/Core/Mangled.h
===================================================================
--- lldb/include/lldb/Core/Mangled.h
+++ lldb/include/lldb/Core/Mangled.h
@@ -51,20 +51,6 @@
/// Initialize with both mangled and demangled names empty.
Mangled() = default;
- /// Construct with name.
- ///
- /// Constructor with an optional string and a boolean indicating if it is
- /// the mangled version.
- ///
- /// \param[in] name
- /// The already const name to copy into this object.
- ///
- /// \param[in] is_mangled
- /// If \b true then \a name is a mangled name, if \b false then
- /// \a name is demangled.
- Mangled(ConstString name, bool is_mangled);
- Mangled(llvm::StringRef name, bool is_mangled);
-
/// Construct with name.
///
/// Constructor with an optional string and auto-detect if \a name is
@@ -76,12 +62,6 @@
explicit Mangled(llvm::StringRef name);
- /// Destructor
- ///
- /// Releases its ref counts on the mangled and demangled strings that live
- /// in the global string pool.
- ~Mangled();
-
/// Convert to pointer operator.
///
/// This allows code to check a Mangled object to see if it contains a valid
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