Fix a crash in SROA. The FunctionPass::doInitialization method was never

being called so that Context was never initialized.  I'm not sure if this
is the right fix but at least it keeps opt from crashing.

llvm-svn: 76220

tools/opt/opt.cpp

@@ -504,6 +504,7 @@ int main(int argc, char **argv) {
     }
 
     if (OptLevelO1 || OptLevelO2 || OptLevelO3) {
+      FPasses->doInitialization();
       for (Module::iterator I = M.get()->begin(), E = M.get()->end();
            I != E; ++I)
         FPasses->run(*I);