Turn on argument promotion in gccas. This can give us substantially better

code in cases where the file has lots of static functions or anon namespaces.

llvm-svn: 12361

llvm/tools/gccas/gccas.cpp

@@ -79,6 +79,7 @@ void AddConfiguredTransformationPasses(PassManager &PM) {
 
   if (!DisableInline)
     addPass(PM, createFunctionInliningPass());   // Inline small functions
+  addPass(PM, createArgumentPromotionPass());    // Scalarize uninlined fn args
 
   addPass(PM, createRaisePointerReferencesPass());// Recover type information
   addPass(PM, createTailDuplicationPass());      // Simplify cfg by copying code