Convert pseudo register-based assembly to stack-based assembly

Hi all,


I'm currently working on a compiler. I use graph coloring to allocate
registers. The compiler targets different platforms, one of them being
the x86. I currently generate code to bypass the fpu stack problem,
every operation being prefixed by a load and postfixed by a store.
The generated code is currently working.


Now I want to optimize that code by using the fpu stack. I've thought
of using the register allocation with pseudo fpu instructions and
pseudo fpu registers. After the register allocation, I would convert
pseudo-instruction into real fpu stack, allocating stack slot to
register. LLVM is using such a technique to allocate stack slot. But I
can't find any information on this process. Does anybody have
experience on this or have information about it?


Thanks


Julien Hamaide

Return to the comp.compilers page.
Search the comp.compilers archives again.