[PATCH olang v1 0/1] deref operation returning value

[Carlos Maniero <carlos@maniero.me>]

We had discussed over IRC about may adding some extra information on the
deref operation to support this feature, but there are two reasons why I
opted to keep this on code gen:

1) Modifying the AST would require changing the unary data structure
from a struct to an union, but no other operator would be beneficed by
this since only the deref needs some extra information.

2) The assign operation is required to identify if its LHS is a deref,
once the mov instruction will differ from a simple ref: The simple ref
will mov the expression result to a RBP offset and the deref will mov
the expression result to the pointer location.

Also, once we have the IR, this logic could easily fit the layer that
will build the IR.

V2:
- Fix code style
- Allows multiple pointer dereference

Carlos Maniero (1):
  codegen: x64: deref returns pointer value

 src/codegen_x86_64.c                 | 88 +++++++++++++++++++++++++---
 src/parser.c                         | 11 ++--
 tests/olc/0038_pointers_deref.ol     | 24 ++++++++
 tests/olc/0039_pointer_of_pointer.ol | 55 +++++++++++++++++
 4 files changed, 164 insertions(+), 14 deletions(-)
 create mode 100644 tests/olc/0038_pointers_deref.ol
 create mode 100644 tests/olc/0039_pointer_of_pointer.ol


base-commit: 2dbf9a9896e5778535bd3dc1d5069a762d3b94fa
-- 
2.46.1