add frontend support for -fdata-sections and -ffunction-sections,
patch by Sylvere Teissier!

llvm-svn: 101108
diff --git a/clang/lib/Frontend/CodeGenAction.cpp b/clang/lib/Frontend/CodeGenAction.cpp
index 7ed702e..fdce211 100644
--- a/clang/lib/Frontend/CodeGenAction.cpp
+++ b/clang/lib/Frontend/CodeGenAction.cpp
@@ -261,6 +261,9 @@
 
   TargetMachine::setAsmVerbosityDefault(CodeGenOpts.AsmVerbose);
 
+  TargetMachine::setFunctionSections(CodeGenOpts.FunctionSections);
+  TargetMachine::setDataSections    (CodeGenOpts.DataSections);
+
   // FIXME: Parse this earlier.
   if (CodeGenOpts.RelocationModel == "static") {
     TargetMachine::setRelocationModel(llvm::Reloc::Static);