Since #9316 was merged, Cconst_pointer is compiled in exactly the same way as Cconst_int. This commit removes the now-redundant Cconst_pointer and Cconst_natpointer.
Following on from GPR#851 and GPR#873, this pull request further enhances debugging information in Cmm terms. This was driven both by manually examining the debugger's behaviour and also by a report received from a user regarding substandard DWARF location information.
- Ident.create now takes a scope as argument
- added Ident.create_var to use when the scope doesn't matter
- the current_time and the current_level are unrelated as of this
commit. But one has to remember to bump the level when creating new
scopes.
- Register type "Addr" is split into
. "Val" (well-formed OCaml values, appropriate as GC roots)
. "Addr" (derived pointers within the heap, must not survive a GC)
- memory_chunk "Word" is split into
. "Word_val" (OCaml value)
. "Word_int" (native-sized integer, not a pointer into the heap)
Cmmgen was updated to use Word_val or Word_int as appropriate.
Application #1: fail at compile-time if a derived pointer within the heap
survives a GC point (cf. PR#6484).
Application #2: CSE can do a better job across allocation points
(keep factoring expressions of type Int, Val, Float, but not Addr).
git-svn-id: http://caml.inria.fr/svn/ocaml/branches/cmm-mach-types@15568 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
Stephen Dolan
Mark Shinwell
Daniel Bünzli
Thomas Refis
Damien Doligez
Vincent Laviron
Fourchaux
Pierre Chambart
Mark Shinwell
alainfrisch
Xavier Leroy
Damien Doligez
Luc Maranget