Extracting code from individual files in LLVM

I need to inline several functions at runtime using LLVM. The complication is that such functions are defined in separate bitcode files.

At runtime, I need to generate code for a function such as

void snippet1();         //declaring that snippet1 and 2 are defined in snippet1.c and snippet2.c
void snippet2();

void combo12(){
    snippet1();
    snippet1();
    snippet2();
    snippet2();
}

From individual LLVM bitcode files compiled from combo12.c, snippet1.c and snippet2.c. The thing is, I need to include all snippet1 and snippet2 calls in combo12. I tried to do this using the following code (main.cpp):

OwningPtr<MemoryBuffer> MB, MB2, MB3;
Module *M1, *M2, *MC12, *MOUT;
LLVMContext Context;
std::string ErrorStr;

MemoryBuffer::getFile("snippet1.bc", MB);
M1 = ParseBitcodeFile(MB.get(), Context);

MemoryBuffer::getFile("snippet2.bc", MB2);
M2 = ParseBitcodeFile(MB2.get(), Context);    

MemoryBuffer::getFile("combo12.bc", MB3);
MC12 = ParseBitcodeFile(MB3.get(), Context);    

Linker* L;

L = new Linker("testprog", M1, 0);

L->setFlags(llvm::Linker::Verbose);

if (!(L->LinkInModule(M2, &ErrorStr)))
    std::cout << ErrorStr;

if (!(L->LinkInModule(MC12, &ErrorStr)))
    std::cout << ErrorStr;

MOUT = L->getModule();

MOUT->dump();

PassManager *PM;

PM = new PassManager();

PM->add(createInternalizePass(true));

PM->add(createAlwaysInlinerPass());

if (PM->run(*MOUT)){
    std::cout << "\n\n\nCode was altered!\n\n\n" << std::endl;
    MOUT->dump();
    std::cout << "\n\n ALTERED BEAST \n\n" << std::endl;
}

snippet1.c:

//What this function does is irrelevant
#include "post_opt.h"     //contains the struct exstr declaration
extern struct exstr a;
inline void snippet1() __attribute((always_inline));
void snippet1(){
    int x, y;
    a.b = 10;
    x = 2;
    if(x < a.a){
        y = x + 1;
    }
}

I compiled snippet1.c, snippet2.c and combo12.c using

clang -c -emit-llvm snippet1.c -o snippet1.bc -O0
clang -c -emit-llvm snippet2.c -o snippet2.bc -O0
clang -c -emit-llvm combo12.c -o combo12.bc -O0

And main.cpp with

clang++ -g main.cpp `llvm-config --cppflags --ldflags --libs --cppflags --ldflags --libs core jit native linker transformutils ipo bitreader` -O0 -o main

When I started. / main, it does not build fragment code, although I explicitly mark the function with the always_inline attribute and use passin AlwaysInline. It never prints ALTERED BEAST on the screen.

? , , IPO- (AlwaysInline), .

!