Add a new option to indicate we want the code generator to emit code quickly,not spending tons of time microoptimizing it. This is useful for an -O0style of build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24233 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/CBackend/CBackend.cpp

@@ -1725,7 +1725,7 @@ void CWriter::visitVAArgInst(VAArgInst &I) {
 //===----------------------------------------------------------------------===//
 
 bool CTargetMachine::addPassesToEmitFile(PassManager &PM, std::ostream &o,
-                                         CodeGenFileType FileType) {
+                                         CodeGenFileType FileType, bool Fast) {
   if (FileType != TargetMachine::AssemblyFile) return true;
 
   PM.add(createLowerGCPass());