The ARM backend uses several tricks to support selection of
VFP3_D16/VFP3_D32 when ocamlopt is invoked, which introduces
interferences with non-existing floating-point registers when
the VFP3_D16 fpu option is used. These invalid interferences
must be skipped while coloring the graph.
git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@13229 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
The interference graph no longer contains "ill-typed" interferences
between registers of different class, so we no longer need to test
in the coloring algorithm.
git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@13208 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
Sets allow for faster insertion than ordered lists, while also supporting
iteration according to the comparison function.
git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@13150 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
There's no need to first split the registers into constrained/unconstrained
sets first and transform these sets into a list using an additional pass;
instead we can directly place the registers on lists, where the constrained
list is sorted by spill cost.
Afterwards all that's left to do is to assign locations to the constrained
and unconstrained registers by traversing the lists.
git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@13145 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
This combines the preallocation of spilled registers and splitting of
the remaining registers into constrained and unconstrained, and thereby
saves one pass on the register set.
git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@13143 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
Iload(byte)
autres: introduction du flag Proc.rotate_registers, histoire de tasser
les registres sur l'Intel.
git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@358 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
cmmgen: prise en compte du flag -compact.
coloring: dissymetrisation des preferences.
interf: ne pas ajouter de preferences entre registres qui conflictent.
emit_mips: masquage du bit "deja scanne" sur les addresses de retour.
git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@105 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
Benedikt Meurer
Damien Doligez
Xavier Leroy
Pierre Weis
Jérôme Vouillon