This PR was tested with also the -dsel, -dlinear output (also fixed to
not-print locations), but the output is architecture-dependent so this
part of the test was removed.
Since we cannot access backtrace position in cmmgen.ml anymore,
Cmm.raise_kind in removed. Instead, we use Lambda.raise_kind. When
assembly code is generated, we reset the backtrace position to 0 in the
case of regular raise. Importantly, the semantics remains the same.
The code in this commit was written by Marcell Fischbach & Benedikt Meurer.
See [Mantis#5324](http://caml.inria.fr/mantis/view.php?id=5324) for some
context.
The code (which was originally written against 3.12) was ported to trunk by
doing
```bash
git clone https://github.com/bmeurer/ocaml-experimental/
cd ocaml-experimental
git diff master...linear-scan-register-allocator > t.diff
```
and then applying the diff by hand.
since the semantic changed. There is no need to check Clflags.debug
anymore Raise_withtrace, means that traces must be computed (if the
runtime boolean is true).
The fix consists in representing float literals by their bit patterns (int64) in the Mach and Linear intermediate languages.
A regression test was added to the test suite.
- 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
(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
Constant propagation for floats can be turned off with option
-no-float-const-prop, for codes that change FP rounding modes at
run-time.
- Clambda / C-- / Mach: represent float constants as FP numbers of type
float rather than literals of type string.
- Tested for AMD64; other archs need testing.
git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@14673 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
pour condenser les programmes et aussi préparer une future (éventuelle)
internationalisation d'Objective Caml.
git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@2796 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
Strength reduction sur les multiplications, divisions, modulo de
puissances de 2.
git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@147 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
Nicolás Ojeda Bär
Gabriel Scherer
Florian Angeletti
KC Sivaramakrishnan
Vincent Laviron
Daniel Bünzli
Mark Shinwell
Leo White
Pierre Chambart
François Bobot
Alain Frisch
Damien Doligez
Xavier Leroy
Mark Shinwell
Benedikt Meurer
Damien Doligez
Luc Maranget
Pierre Weis