From cbe34b4cc98148b386a0c96cd195e7f62f52a6e3 Mon Sep 17 00:00:00 2001 From: Hans Wennborg Date: Sat, 23 Jun 2012 11:37:03 +0000 Subject: Extend the IL for selecting TLS models (PR9788) This allows the user/front-end to specify a model that is better than what LLVM would choose by default. For example, a variable might be declared as @x = thread_local(initialexec) global i32 42 if it will not be used in a shared library that is dlopen'ed. If the specified model isn't supported by the target, or if LLVM can make a better choice, a different model may be used. llvm-svn: 159077 --- llvm/lib/Target/CppBackend/CPPBackend.cpp | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) (limited to 'llvm/lib/Target/CppBackend/CPPBackend.cpp') diff --git a/llvm/lib/Target/CppBackend/CPPBackend.cpp b/llvm/lib/Target/CppBackend/CPPBackend.cpp index cd2ebcb5087..0ea2a299dd8 100644 --- a/llvm/lib/Target/CppBackend/CPPBackend.cpp +++ b/llvm/lib/Target/CppBackend/CPPBackend.cpp @@ -130,6 +130,7 @@ namespace { private: void printLinkageType(GlobalValue::LinkageTypes LT); void printVisibilityType(GlobalValue::VisibilityTypes VisTypes); + void printThreadLocalMode(GlobalVariable::ThreadLocalMode TLM); void printCallingConv(CallingConv::ID cc); void printEscapedString(const std::string& str); void printCFP(const ConstantFP* CFP); @@ -325,6 +326,26 @@ void CppWriter::printVisibilityType(GlobalValue::VisibilityTypes VisType) { } } +void CppWriter::printThreadLocalMode(GlobalVariable::ThreadLocalMode TLM) { + switch (TLM) { + case GlobalVariable::NotThreadLocal: + Out << "GlobalVariable::NotThreadLocal"; + break; + case GlobalVariable::GeneralDynamicTLSModel: + Out << "GlobalVariable::GeneralDynamicTLSModel"; + break; + case GlobalVariable::LocalDynamicTLSModel: + Out << "GlobalVariable::LocalDynamicTLSModel"; + break; + case GlobalVariable::InitialExecTLSModel: + Out << "GlobalVariable::InitialExecTLSModel"; + break; + case GlobalVariable::LocalExecTLSModel: + Out << "GlobalVariable::LocalExecTLSModel"; + break; + } +} + // printEscapedString - Print each character of the specified string, escaping // it if it is not printable or if it is an escape char. void CppWriter::printEscapedString(const std::string &Str) { @@ -996,7 +1017,9 @@ void CppWriter::printVariableHead(const GlobalVariable *GV) { } if (GV->isThreadLocal()) { printCppName(GV); - Out << "->setThreadLocal(true);"; + Out << "->setThreadLocalMode("; + printThreadLocalMode(GV->getThreadLocalMode()); + Out << ");"; nl(Out); } if (is_inline) { -- cgit v1.2.3