Introduce the type Cmm.exttype to precisely describe arguments to
external C functions, especially unboxed numerical arguments.
Annotate Cmm.Cextcall with the types of the arguments (Cmm.exttype list).
An empty list means "all arguments have default type XInt".
Annotate Mach.Iextcall with the type of the result (Cmm.machtype)
and the types of the arguments (Cmm.exttype list).
Change (slightly) the API for describing calling conventions in Proc:
- loc_external_arguments now takes a Cmm.exttype list,
in order to know more precisely the types of the arguments.
- loc_arguments, loc_parameters, loc_results, loc_external_results
now take a Cmm.machype instead of an array of pseudoregisters.
(Only the types of the pseudoregisters mattered anyway.)
Update the implementations of module Proc accordingly, in every port.
Introduce a new overridable method in Selectgen, insert_move_extcall_arg,
to produce the code that moves an argument of an external C function
to the locations returned by Proc.loc_external_arguments.
Revise the selection of external calls accordingly
(method emit_extcall_args in Selectgen).
PR#6588 part 2: for ARMv4 and ARMv5, make sure architectural constraints
on the "smull" instruction are respected. (Patch by Mark Shinwell.)
git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@15531 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
Typo in destroyed_at_alloc and destroyed_at_c_call, D17 was incorrectly claimed to be preserved.
git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@15007 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
the x87 FP stack, which must not be eliminated.
CSEgen: harden against the same x87-specific issue + against reuse of
values in fixed hardware registers that were destroyed by a prior
operation.
git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@14877 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
(Reuses results of previous computations instead of recomputing them.)
(Cherry-picked from branch backend-optim.)
Tested on amd64/linux and i386/linux.
Other back-ends compile (after assorted updates) but are untested.
git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@14688 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
This way we can avoid having to duplicate the same functionality for
every backend, and we may also benefit from other optimizations performed
during C-- generation.
git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@14303 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
Fails to compile alt-ergo without frame-pointers. No time to debug
before tonight, so I revert and will merge again after fixing the
problem.
git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@13732 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
This option can be used to tell the native compiler that it should
update frame pointers, so that debuggers and profiling tools
(especially Linux perf) can use them. For now, it is only supported
by the Unix/amd64 port.
git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@13730 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
Initial merge of the new ARM backend (commit ec5b444c7f) from my development
repository at https://github.com/bmeurer/ocaml-arm/tree/ec5b444c7f .
Compared to the old ARM backend, this one does the following:
- Support for both software and hardware floating-point (VFPv3).
- Properly supports interworking with Thumb/Thumb-2 code for both OCaml and C
code.
- Supports dynamic linking and large memory models (PR#5049).
- Optional support for position-independent code via a command line option
-fPIC. This is disabled by default and not required for natdynlink.
- Can emit both ARM and Thumb-2 code, with avg. code size savings of 28% for
Thumb-2 (quite close the optimal 30% advertised by ARM Ltd.).
- Supports both AAPCS (armel) as well as extended VFP calling conventions
(armhf).
- Supports several special ARM instructions to reduce code size and latency.
- Uses standard ARM EABI runtime functions instead of relying on GCC internals.
- Supports exception backtraces.
- Supports profiling using gprof.
git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@12124 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
- Reserve register r9 and treat r10 as callee-save, as per the EABI.
- Treatment of alloc_limit register.
- Fixed bug in inlined allocation sequence.
git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@9252 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
Nicolás Ojeda Bär
Xavier Leroy
Greta Yorsh
KC Sivaramakrishnan
Mark Shinwell
Xavier Clerc
Xavier Leroy
Fourchaux
alainfrisch
Damien Doligez
Mark Shinwell
Damien Doligez
Jérémie Dimino
Xavier Leroy
Gabriel Scherer
Benedikt Meurer
Fabrice Le Fessant