Two more small optimizations

This allows the object to be freed much earlier (and tells the JIT that
the object that linger on some stack do not actually escape).

in theory, an rpython for x in range loop should be exactly equivalent
to a while loop. The only difference is if it contains a JIT driver, in
which case the for loop is slower :-(

enable the main loop jit driver again

this is made possible with a workaround for the JIT bug that so far
disabled inlining when this driver is present.

Pointed out by @cfbolz, having i in the set of greens lets to complete unrolling of the loop.
Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

TruffleSOM also intrinsifies this.
Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

- make bytecode loop unroll safe
- refactor while loop implementation to avoid code duplication
Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

Method invocation takes care of restarts and non-local returns, very similar to the Truffle version.
Signed-off-by: Stefan Marr <git@stefan-marr.de>

- it relies on interpreter returning result values and puts it on the stack
- non-local returns are handled by method call of the context
Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

- remove all unnecessary fields
- pass frame along explicitly
- remove unnecessary parameters from functions
- local returns use simple return statements, while non-local returns rely on exceptions to unwind the stack
- removed unnecessary frame related operations from interpreter (manipulating the stack of frames)
- added comments about the bytecode number associated with each bytecode to ease debugging
Signed-off-by: Stefan Marr <git@stefan-marr.de>

Added control flow exceptions to manage non-local returns and block restarts in this recursively written interpreter
Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

It was for debugging, but #dnu's can be useful on their own.
Signed-off-by: Stefan Marr <git@stefan-marr.de>

Globals are not supported by RPython
Signed-off-by: Stefan Marr <git@stefan-marr.de>

Otherwise, RPython can't proof that it is not going to be modified.
Signed-off-by: Stefan Marr <git@stefan-marr.de>

- delete unneeded frame primitives
- added missing __init__ to AbstractObject
- removed unused parameter from print_stack_trace
- pass instance of universe to get_class(.)
Signed-off-by: Stefan Marr <git@stefan-marr.de>

Introduction of AbstractObject without fields and classes.
Methods are not Arrays anymore to simplify and avoid use of 'object fields'.
Frames are not entirely implementation specific.

- clean out superficial comments
- added missing primitives
Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

Before, we downloaded always the latest head, I think. Not very useful for performance tacking.
Signed-off-by: Stefan Marr <git@stefan-marr.de>

- also added them to .gitignore
Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>