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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159077 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/CppBackend/CPPBackend.cpp b/lib/Target/CppBackend/CPPBackend.cpp
index cd2ebcb..0ea2a29 100644
--- a/lib/Target/CppBackend/CPPBackend.cpp
+++ b/lib/Target/CppBackend/CPPBackend.cpp
@@ -130,6 +130,7 @@
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::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 @@
}
if (GV->isThreadLocal()) {
printCppName(GV);
- Out << "->setThreadLocal(true);";
+ Out << "->setThreadLocalMode(";
+ printThreadLocalMode(GV->getThreadLocalMode());
+ Out << ");";
nl(Out);
}
if (is_inline) {