On 30 Aug 2011, at 09:59, Michael Schnell wrote:
On 08/29/2011 05:58 PM, Hans-Peter Diettrich wrote:
Michael Schnell schrieb:
That is why I am astonished that converting Java-Bytecode to
Dalvik code should be an easy task.
A stackbased internal or intermediate representation is the most
general one, from which a compiler can decide which registers to
use for expression evaluation etc. FPC itself uses registers only
for the actual code generation, depending on how many registers are
available on the target machine.
I don't see what you mean here.
He means that converting a stack based program representation (whether
it's compiler-internal or Java byte code is irrelevant) of a program
to a flat register file based program representation has been a solved
problem since a long time ago. I tried to explain the same thing with
my example of JIT compilers, which perform exactly the same task
starting from exactly the same Java byte code.
Jonas
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