Bug due to the fact that a variable can be "defined" and "read"
(in scheduling sense) by the same equation, without being a memory:
e.g., a clock defined as the result of a node application, together
with another result on this same clock.
Bug correction: basically removed the "assert false" on killed_vars,
decr_uses; do not count as "use" the self reads.
- We can do a better allocation if we take into
account 'when' in extvalues
(test/good/memalloc_clocks.ept shows the
improvement)
- Fixed a bug with memalloc on records: if we
translate:
o = { a with .f = u }
to
o = a; o.f = u
then we cannot share u and o.f
test :
node f(c :bool) returns (out :int)
let
out = (0 fby 1) when c
tel
et
node f(x :int) returns (out : int)
let
out = 0 fby x
tel
node g(c :bool) returns (out :int)
let
out = f(0) when c
tel
This helped solve a few bugs with linear types,
for instance when using automata.
The intermediate code is not well-typed (wrt to
linear types only), after the encoding of automata.
( = ) in pervasives is a stub, it will be typed in a polymorphic way.
This is necessary to have a simple way to transform exp into a static_exp
even when there is the = operator.
Ewhen is now the only case of possible recursion for minils exps.
This add was motivated by equations like :
(y,z) = f(x) when c
This equation to be correctly normalized in minils before needed :
y',z' = f(x)
y = y' when c
z = z' when c
But this new variables where needless since the final translation of when c
is the identity.
in the old fix was missing the renaming, and there was wrong equations
order :
f () returns x
[here rename x by mem_x]
mem_x = fby ...
x = mem_x
so the simplest was :
f () returns out_x
var x;
[ nothing to do]
out_x = x
x = fby ...
pay attention to the order of equations since we are after the
scheduling..
probably it should be done before the scheduling anyway ?
Created two new files:
- utilities/global/compiler_options.ml: contains
the options that can be set using the cli
- utilities/global/errors.ml: contains global
errors definition
Misc now only contains helper functions that have
nothing to do with the ast or the compiler.
Warn as error for partial match.
Warn for unused variables : added some TODO to check.
PS : I'll deal with callgraph which is doing things that Modules does.
