var opt_no_union_attribute = new OptionBool("Put primitive attibutes in a box instead of an union", "--no-union-attribute")
# --no-shortcut-equate
var opt_no_shortcut_equate = new OptionBool("Always call == in a polymorphic way", "--no-shortcut-equal")
+
+ # --colors-are-symbols
+ var opt_colors_are_symbols = new OptionBool("Store colors as symbols (link-boost)", "--colors-are-symbols")
+ # --trampoline-call
+ var opt_trampoline_call = new OptionBool("Use an indirection when calling", "--trampoline-call")
+ # --guard-call
+ var opt_guard_call = new OptionBool("Guard VFT calls with a direct call", "--guard-call")
+ # --substitute-monomorph
+ var opt_substitute_monomorph = new OptionBool("Replace monomorph trampoline with direct call (link-boost)", "--substitute-monomorph")
+ # --link-boost
+ var opt_link_boost = new OptionBool("Enable all link-boost optimizations", "--link-boost")
+
# --inline-coloring-numbers
var opt_inline_coloring_numbers = new OptionBool("Inline colors and ids (semi-global)", "--inline-coloring-numbers")
# --inline-some-methods
var opt_inline_some_methods = new OptionBool("Allow the separate compiler to inline some methods (semi-global)", "--inline-some-methods")
# --direct-call-monomorph
var opt_direct_call_monomorph = new OptionBool("Allow the separate compiler to direct call monomorph sites (semi-global)", "--direct-call-monomorph")
+ # --direct-call-monomorph0
+ var opt_direct_call_monomorph0 = new OptionBool("Allow the separate compiler to direct call monomorph sites (semi-global)", "--direct-call-monomorph0")
# --skip-dead-methods
var opt_skip_dead_methods = new OptionBool("Do not compile dead methods (semi-global)", "--skip-dead-methods")
# --semi-global
self.option_context.add_option(self.opt_no_inline_intern)
self.option_context.add_option(self.opt_no_union_attribute)
self.option_context.add_option(self.opt_no_shortcut_equate)
+ self.option_context.add_option(opt_colors_are_symbols, opt_trampoline_call, opt_guard_call, opt_direct_call_monomorph0, opt_substitute_monomorph, opt_link_boost)
self.option_context.add_option(self.opt_inline_coloring_numbers, opt_inline_some_methods, opt_direct_call_monomorph, opt_skip_dead_methods, opt_semi_global)
self.option_context.add_option(self.opt_colo_dead_methods)
self.option_context.add_option(self.opt_tables_metrics)
tc.opt_direct_call_monomorph.value = true
tc.opt_skip_dead_methods.value = true
end
+ if tc.opt_link_boost.value then
+ tc.opt_colors_are_symbols.value = true
+ tc.opt_substitute_monomorph.value = true
+ end
+ if tc.opt_substitute_monomorph.value then
+ tc.opt_trampoline_call.value = true
+ end
end
var separate_compiler_phase = new SeparateCompilerPhase(self, null)
self.toolcontext.info("*** GENERATING C ***", 1)
var compiler = new SeparateCompiler(mainmodule, self, runtime_type_analysis)
- compiler.compile_header
-
- # compile class structures
- self.toolcontext.info("Property coloring", 2)
- compiler.new_file("{mainmodule.name}.classes")
- compiler.do_property_coloring
- for m in mainmodule.in_importation.greaters do
- for mclass in m.intro_mclasses do
- if mclass.kind == abstract_kind or mclass.kind == interface_kind then continue
- compiler.compile_class_to_c(mclass)
- end
- end
-
- # The main function of the C
- compiler.new_file("{mainmodule.name}.main")
- compiler.compile_nitni_global_ref_functions
- compiler.compile_main_function
- compiler.compile_finalizer_function
-
- # compile methods
- for m in mainmodule.in_importation.greaters do
- self.toolcontext.info("Generate C for module {m}", 2)
- compiler.new_file("{m.name}.sep")
- compiler.compile_module_to_c(m)
- end
-
- # compile live & cast type structures
- self.toolcontext.info("Type coloring", 2)
- compiler.new_file("{mainmodule.name}.types")
- var mtypes = compiler.do_type_coloring
- for t in mtypes do
- compiler.compile_type_to_c(t)
- end
- # compile remaining types structures (useless but needed for the symbol resolution at link-time)
- for t in compiler.undead_types do
- if mtypes.has(t) then continue
- compiler.compile_type_to_c(t)
- end
-
+ compiler.do_compilation
compiler.display_stats
var time1 = get_time
private var undead_types: Set[MType] = new HashSet[MType]
private var live_unresolved_types: Map[MClassDef, Set[MType]] = new HashMap[MClassDef, HashSet[MType]]
- private var type_ids: Map[MType, Int]
- private var type_colors: Map[MType, Int]
- private var opentype_colors: Map[MType, Int]
- protected var method_colors: Map[PropertyLayoutElement, Int]
- protected var attr_colors: Map[MAttribute, Int]
+ private var type_ids: Map[MType, Int] is noinit
+ private var type_colors: Map[MType, Int] is noinit
+ private var opentype_colors: Map[MType, Int] is noinit
+ protected var method_colors: Map[PropertyLayoutElement, Int] is noinit
+ protected var attr_colors: Map[MAttribute, Int] is noinit
- init(mainmodule: MModule, mmbuilder: ModelBuilder, runtime_type_analysis: nullable RapidTypeAnalysis) do
- super(mainmodule, mmbuilder)
+ init do
var file = new_file("nit.common")
self.header = new CodeWriter(file)
- self.runtime_type_analysis = runtime_type_analysis
self.compile_box_kinds
end
+ redef fun do_compilation
+ do
+ var compiler = self
+ compiler.compile_header
+
+ var c_name = mainmodule.c_name
+
+ # compile class structures
+ modelbuilder.toolcontext.info("Property coloring", 2)
+ compiler.new_file("{c_name}.classes")
+ compiler.do_property_coloring
+ for m in mainmodule.in_importation.greaters do
+ for mclass in m.intro_mclasses do
+ #if mclass.kind == abstract_kind or mclass.kind == interface_kind then continue
+ compiler.compile_class_to_c(mclass)
+ end
+ end
+
+ # The main function of the C
+ compiler.new_file("{c_name}.main")
+ compiler.compile_nitni_global_ref_functions
+ compiler.compile_main_function
+ compiler.compile_finalizer_function
+ compiler.link_mmethods
+
+ # compile methods
+ for m in mainmodule.in_importation.greaters do
+ modelbuilder.toolcontext.info("Generate C for module {m.full_name}", 2)
+ compiler.new_file("{m.c_name}.sep")
+ compiler.compile_module_to_c(m)
+ end
+
+ # compile live & cast type structures
+ modelbuilder.toolcontext.info("Type coloring", 2)
+ compiler.new_file("{c_name}.types")
+ compiler.compile_types
+ end
+
+ # Color and compile type structures and cast information
+ fun compile_types
+ do
+ var compiler = self
+
+ var mtypes = compiler.do_type_coloring
+ for t in mtypes do
+ compiler.compile_type_to_c(t)
+ end
+ # compile remaining types structures (useless but needed for the symbol resolution at link-time)
+ for t in compiler.undead_types do
+ if mtypes.has(t) then continue
+ compiler.compile_type_to_c(t)
+ end
+
+ end
+
redef fun compile_header_structs do
self.header.add_decl("typedef void(*nitmethod_t)(void); /* general C type representing a Nit method. */")
self.compile_header_attribute_structs
fun compile_color_const(v: SeparateCompilerVisitor, m: Object, color: Int) do
if color_consts_done.has(m) then return
- if m isa MProperty then
- if modelbuilder.toolcontext.opt_inline_coloring_numbers.value then
- self.provide_declaration(m.const_color, "#define {m.const_color} {color}")
- else
- self.provide_declaration(m.const_color, "extern const int {m.const_color};")
- v.add("const int {m.const_color} = {color};")
- end
- else if m isa MPropDef then
+ if m isa MEntity then
if modelbuilder.toolcontext.opt_inline_coloring_numbers.value then
self.provide_declaration(m.const_color, "#define {m.const_color} {color}")
- else
+ else if not modelbuilder.toolcontext.opt_colors_are_symbols.value or not v.compiler.target_platform.supports_linker_script then
self.provide_declaration(m.const_color, "extern const int {m.const_color};")
v.add("const int {m.const_color} = {color};")
- end
- else if m isa MType then
- if modelbuilder.toolcontext.opt_inline_coloring_numbers.value then
- self.provide_declaration(m.const_color, "#define {m.const_color} {color}")
else
- self.provide_declaration(m.const_color, "extern const int {m.const_color};")
- v.add("const int {m.const_color} = {color};")
+ # The color 'C' is the ``address'' of a false static variable 'XC'
+ self.provide_declaration(m.const_color, "#define {m.const_color} ((long)&X{m.const_color})\nextern const void X{m.const_color};")
+ if color == -1 then color = 0 # Symbols cannot be negative, so just use 0 for dead things
+ # Teach the linker that the address of 'XC' is `color`.
+ linker_script.add("X{m.const_color} = {color};")
end
+ else
+ abort
end
color_consts_done.add(m)
end
var live_cast_types = runtime_type_analysis.live_cast_types
var mtypes = new HashSet[MType]
mtypes.add_all(live_types)
- mtypes.add_all(live_cast_types)
for c in self.box_kinds.keys do
mtypes.add(c.mclass_type)
end
# Compute colors
- var poset = poset_from_mtypes(mtypes)
+ var poset = poset_from_mtypes(mtypes, live_cast_types)
var colorer = new POSetColorer[MType]
colorer.colorize(poset)
type_ids = colorer.ids
return poset
end
- private fun poset_from_mtypes(mtypes: Set[MType]): POSet[MType] do
+ private fun poset_from_mtypes(mtypes, cast_types: Set[MType]): POSet[MType] do
var poset = new POSet[MType]
for e in mtypes do
poset.add_node(e)
- for o in mtypes do
+ for o in cast_types do
if e == o then continue
+ poset.add_node(o)
if e.is_subtype(mainmodule, null, o) then
poset.add_edge(e, o)
end
var r = pd.separate_runtime_function
r.compile_to_c(self)
var r2 = pd.virtual_runtime_function
- r2.compile_to_c(self)
+ if r2 != r then r2.compile_to_c(self)
+
+ # Generate trampolines
+ if modelbuilder.toolcontext.opt_trampoline_call.value then
+ r2.compile_trampolines(self)
+ end
end
end
self.mainmodule = old_module
end
+ # Process all introduced methods and compile some linking information (if needed)
+ fun link_mmethods
+ do
+ if not modelbuilder.toolcontext.opt_substitute_monomorph.value and not modelbuilder.toolcontext.opt_guard_call.value then return
+
+ for mmodule in mainmodule.in_importation.greaters do
+ for cd in mmodule.mclassdefs do
+ for m in cd.intro_mproperties do
+ if not m isa MMethod then continue
+ link_mmethod(m)
+ end
+ end
+ end
+ end
+
+ # Compile some linking information (if needed)
+ fun link_mmethod(m: MMethod)
+ do
+ var n2 = "CALL_" + m.const_color
+
+ # Replace monomorphic call by a direct call to the virtual implementation
+ var md = is_monomorphic(m)
+ if md != null then
+ linker_script.add("{n2} = {md.virtual_runtime_function.c_name};")
+ end
+
+ # If opt_substitute_monomorph then a trampoline is used, else a weak symbol is used
+ if modelbuilder.toolcontext.opt_guard_call.value then
+ var r = m.intro.virtual_runtime_function
+ provide_declaration(n2, "{r.c_ret} {n2}{r.c_sig} __attribute__((weak));")
+ end
+ end
+
+ # The single mmethodef called in case of monomorphism.
+ # Returns nul if dead or polymorphic.
+ fun is_monomorphic(m: MMethod): nullable MMethodDef
+ do
+ var rta = runtime_type_analysis
+ if rta == null then
+ # Without RTA, monomorphic means alone (uniq name)
+ if m.mpropdefs.length == 1 then
+ return m.mpropdefs.first
+ else
+ return null
+ end
+ else
+ # With RTA, monomorphic means only live methoddef
+ var res: nullable MMethodDef = null
+ for md in m.mpropdefs do
+ if rta.live_methoddefs.has(md) then
+ if res != null then return null
+ res = md
+ end
+ end
+ return res
+ end
+ end
+
# Globaly compile the type structure of a live type
fun compile_type_to_c(mtype: MType)
do
redef fun compile_callsite(callsite, args)
do
var rta = compiler.runtime_type_analysis
- var mmethod = callsite.mproperty
- # TODO: Inlining of new-style constructors
- if compiler.modelbuilder.toolcontext.opt_direct_call_monomorph.value and rta != null and not mmethod.is_root_init then
+ # TODO: Inlining of new-style constructors with initializers
+ if compiler.modelbuilder.toolcontext.opt_direct_call_monomorph.value and rta != null and callsite.mpropdef.initializers.is_empty then
var tgs = rta.live_targets(callsite)
if tgs.length == 1 then
- # DIRECT CALL
- var res0 = before_send(mmethod, args)
- var res = call(tgs.first, tgs.first.mclassdef.bound_mtype, args)
- if res0 != null then
- assert res != null
- self.assign(res0, res)
- res = res0
- end
- add("\}") # close the before_send
- return res
+ return direct_call(tgs.first, args)
end
end
+ # Shortcut intern methods as they are not usually redefinable
+ if callsite.mpropdef.is_intern and callsite.mproperty.name != "object_id" then
+ # `object_id` is the only redefined intern method, so it can not be directly called.
+ # TODO find a less ugly approach?
+ return direct_call(callsite.mpropdef, args)
+ end
return super
end
+
+ # Fully and directly call a mpropdef
+ #
+ # This method is used by `compile_callsite`
+ private fun direct_call(mpropdef: MMethodDef, args: Array[RuntimeVariable]): nullable RuntimeVariable
+ do
+ var res0 = before_send(mpropdef.mproperty, args)
+ var res = call(mpropdef, mpropdef.mclassdef.bound_mtype, args)
+ if res0 != null then
+ assert res != null
+ self.assign(res0, res)
+ res = res0
+ end
+ add("\}") # close the before_send
+ return res
+ end
redef fun send(mmethod, arguments)
do
if arguments.first.mcasttype.ctype != "val*" then
return res
end
- return table_send(mmethod, arguments, mmethod.const_color)
+ return table_send(mmethod, arguments, mmethod)
end
# Handle common special cases before doing the effective method invocation
var res: nullable RuntimeVariable = null
var recv = arguments.first
var consider_null = not self.compiler.modelbuilder.toolcontext.opt_no_check_null.value or mmethod.name == "==" or mmethod.name == "!="
- var maybenull = recv.mcasttype isa MNullableType and consider_null
+ var maybenull = (recv.mcasttype isa MNullableType or recv.mcasttype isa MNullType) and consider_null
if maybenull then
self.add("if ({recv} == NULL) \{")
- if mmethod.name == "==" then
+ if mmethod.name == "==" or mmethod.name == "is_same_instance" then
res = self.new_var(bool_type)
var arg = arguments[1]
if arg.mcasttype isa MNullableType then
else
self.add("\{")
end
- if not self.compiler.modelbuilder.toolcontext.opt_no_shortcut_equate.value and (mmethod.name == "==" or mmethod.name == "!=") then
- if res == null then res = self.new_var(bool_type)
- # Recv is not null, thus is arg is, it is easy to conclude (and respect the invariants)
+ if not self.compiler.modelbuilder.toolcontext.opt_no_shortcut_equate.value and (mmethod.name == "==" or mmethod.name == "!=" or mmethod.name == "is_same_instance") then
+ # Recv is not null, thus if arg is, it is easy to conclude (and respect the invariants)
var arg = arguments[1]
if arg.mcasttype isa MNullType then
- if mmethod.name == "==" then
- self.add("{res} = 0; /* arg is null but recv is not */")
- else
+ if res == null then res = self.new_var(bool_type)
+ if mmethod.name == "!=" then
self.add("{res} = 1; /* arg is null and recv is not */")
+ else # `==` and `is_same_instance`
+ self.add("{res} = 0; /* arg is null but recv is not */")
end
self.add("\}") # closes the null case
self.add("if (0) \{") # what follow is useless, CC will drop it
return res
end
- private fun table_send(mmethod: MMethod, arguments: Array[RuntimeVariable], const_color: String): nullable RuntimeVariable
+ private fun table_send(mmethod: MMethod, arguments: Array[RuntimeVariable], mentity: MEntity): nullable RuntimeVariable
do
compiler.modelbuilder.nb_invok_by_tables += 1
if compiler.modelbuilder.toolcontext.opt_invocation_metrics.value then add("count_invoke_by_tables++;")
var res0 = before_send(mmethod, arguments)
+ var runtime_function = mmethod.intro.virtual_runtime_function
+ var msignature = runtime_function.called_signature
+
var res: nullable RuntimeVariable
- var msignature = mmethod.intro.msignature.resolve_for(mmethod.intro.mclassdef.bound_mtype, mmethod.intro.mclassdef.bound_mtype, mmethod.intro.mclassdef.mmodule, true)
var ret = msignature.return_mtype
- if mmethod.is_new then
- ret = arguments.first.mtype
- res = self.new_var(ret)
- else if ret == null then
+ if ret == null then
res = null
else
res = self.new_var(ret)
end
- var s = new FlatBuffer
var ss = new FlatBuffer
- s.append("val*")
ss.append("{recv}")
for i in [0..msignature.arity[ do
var a = arguments[i+1]
if i == msignature.vararg_rank then
t = arguments[i+1].mcasttype
end
- s.append(", {t.ctype}")
a = self.autobox(a, t)
ss.append(", {a}")
end
-
- var r
- if ret == null then r = "void" else r = ret.ctype
- self.require_declaration(const_color)
- var call = "(({r} (*)({s}))({arguments.first}->class->vft[{const_color}]))({ss}) /* {mmethod} on {arguments.first.inspect}*/"
-
+ var const_color = mentity.const_color
+ var ress
if res != null then
- self.add("{res} = {call};")
+ ress = "{res} = "
else
- self.add("{call};")
+ ress = ""
+ end
+ if mentity isa MMethod and compiler.modelbuilder.toolcontext.opt_direct_call_monomorph0.value then
+ # opt_direct_call_monomorph0 is used to compare the efficiency of the alternative lookup implementation, ceteris paribus.
+ # The difference with the non-zero option is that the monomorphism is looked-at on the mmethod level and not at the callsite level.
+ # TODO: remove this mess and use per callsite service to detect monomorphism in a single place.
+ var md = compiler.is_monomorphic(mentity)
+ if md != null then
+ var callsym = md.virtual_runtime_function.c_name
+ self.require_declaration(callsym)
+ self.add "{ress}{callsym}({ss}); /* {mmethod} on {arguments.first.inspect}*/"
+ else
+ self.require_declaration(const_color)
+ self.add "{ress}(({runtime_function.c_funptrtype})({arguments.first}->class->vft[{const_color}]))({ss}); /* {mmethod} on {arguments.first.inspect}*/"
+ end
+ else if mentity isa MMethod and compiler.modelbuilder.toolcontext.opt_guard_call.value then
+ var callsym = "CALL_" + const_color
+ self.require_declaration(callsym)
+ self.add "if (!{callsym}) \{"
+ self.require_declaration(const_color)
+ self.add "{ress}(({runtime_function.c_funptrtype})({arguments.first}->class->vft[{const_color}]))({ss}); /* {mmethod} on {arguments.first.inspect}*/"
+ self.add "\} else \{"
+ self.add "{ress}{callsym}({ss}); /* {mmethod} on {arguments.first.inspect}*/"
+ self.add "\}"
+ else if mentity isa MMethod and compiler.modelbuilder.toolcontext.opt_trampoline_call.value then
+ var callsym = "CALL_" + const_color
+ self.require_declaration(callsym)
+ self.add "{ress}{callsym}({ss}); /* {mmethod} on {arguments.first.inspect}*/"
+ else
+ self.require_declaration(const_color)
+ self.add "{ress}(({runtime_function.c_funptrtype})({arguments.first}->class->vft[{const_color}]))({ss}); /* {mmethod} on {arguments.first.inspect}*/"
end
if res0 != null then
var res: nullable RuntimeVariable
var ret = mmethoddef.msignature.return_mtype
- if mmethoddef.mproperty.is_new then
- ret = arguments.first.mtype
- res = self.new_var(ret)
- else if ret == null then
+ if ret == null then
res = null
else
ret = ret.resolve_for(mmethoddef.mclassdef.bound_mtype, mmethoddef.mclassdef.bound_mtype, mmethoddef.mclassdef.mmodule, true)
(compiler.modelbuilder.toolcontext.opt_inline_some_methods.value and mmethoddef.can_inline(self)) then
compiler.modelbuilder.nb_invok_by_inline += 1
if compiler.modelbuilder.toolcontext.opt_invocation_metrics.value then add("count_invoke_by_inline++;")
- var frame = new Frame(self, mmethoddef, recvtype, arguments)
+ var frame = new StaticFrame(self, mmethoddef, recvtype, arguments)
frame.returnlabel = self.get_name("RET_LABEL")
frame.returnvar = res
var old_frame = self.frame
self.compiler.mainmodule = main
return res
end
- return table_send(m.mproperty, arguments, m.const_color)
+ return table_send(m.mproperty, arguments, m)
end
redef fun vararg_instance(mpropdef, recv, varargs, elttype)
# of the method (ie recv) if the static type is unresolved
# This is more complex than usual because the unresolved type must not be resolved
# with the current receiver (ie self).
- # Therefore to isolate the resolution from self, a local Frame is created.
+ # Therefore to isolate the resolution from self, a local StaticFrame is created.
# One can see this implementation as an inlined method of the receiver whose only
# job is to allocate the array
var old_frame = self.frame
- var frame = new Frame(self, mpropdef, mpropdef.mclassdef.bound_mtype, [recv])
+ var frame = new StaticFrame(self, mpropdef, mpropdef.mclassdef.bound_mtype, [recv])
self.frame = frame
#print "required Array[{elttype}] for recv {recv.inspect}. bound=Array[{self.resolve_for(elttype, recv)}]. selfvar={frame.arguments.first.inspect}"
var res = self.array_instance(varargs, elttype)
var nclass = self.get_class("NativeArray")
var recv = "((struct instance_{nclass.c_name}*){arguments[0]})->values"
if pname == "[]" then
- self.ret(self.new_expr("{recv}[{arguments[1]}]", ret_type.as(not null)))
+ # Because the objects are boxed, return the box to avoid unnecessary (or broken) unboxing/reboxing
+ var res = self.new_expr("{recv}[{arguments[1]}]", compiler.mainmodule.object_type)
+ res.mcasttype = ret_type.as(not null)
+ self.ret(res)
return
else if pname == "[]=" then
self.add("{recv}[{arguments[1]}]={arguments[2]};")
end
redef class MMethodDef
- fun separate_runtime_function: AbstractRuntimeFunction
+ # The C function associated to a mmethoddef
+ fun separate_runtime_function: SeparateRuntimeFunction
do
var res = self.separate_runtime_function_cache
if res == null then
- res = new SeparateRuntimeFunction(self)
+ var recv = mclassdef.bound_mtype
+ var msignature = msignature.resolve_for(recv, recv, mclassdef.mmodule, true)
+ res = new SeparateRuntimeFunction(self, recv, msignature, c_name)
self.separate_runtime_function_cache = res
end
return res
end
private var separate_runtime_function_cache: nullable SeparateRuntimeFunction
- fun virtual_runtime_function: AbstractRuntimeFunction
+ # The C function associated to a mmethoddef, that can be stored into a VFT of a class
+ # The first parameter (the reciever) is always typed by val* in order to accept an object value
+ # The C-signature is always compatible with the intro
+ fun virtual_runtime_function: SeparateRuntimeFunction
do
var res = self.virtual_runtime_function_cache
if res == null then
- res = new VirtualRuntimeFunction(self)
+ # Because the function is virtual, the signature must match the one of the original class
+ var intromclassdef = mproperty.intro.mclassdef
+ var recv = intromclassdef.bound_mtype
+
+ res = separate_runtime_function
+ if res.called_recv == recv then
+ self.virtual_runtime_function_cache = res
+ return res
+ end
+
+ var msignature = mproperty.intro.msignature.resolve_for(recv, recv, intromclassdef.mmodule, true)
+
+ if recv.ctype == res.called_recv.ctype and msignature.c_equiv(res.called_signature) then
+ self.virtual_runtime_function_cache = res
+ return res
+ end
+
+ res = new SeparateRuntimeFunction(self, recv, msignature, "VIRTUAL_{c_name}")
self.virtual_runtime_function_cache = res
+ res.is_thunk = true
end
return res
end
- private var virtual_runtime_function_cache: nullable VirtualRuntimeFunction
+ private var virtual_runtime_function_cache: nullable SeparateRuntimeFunction
+end
+
+redef class MSignature
+ # Does the C-version of `self` the same than the C-version of `other`?
+ fun c_equiv(other: MSignature): Bool
+ do
+ if self == other then return true
+ if arity != other.arity then return false
+ for i in [0..arity[ do
+ if mparameters[i].mtype.ctype != other.mparameters[i].mtype.ctype then return false
+ end
+ if return_mtype != other.return_mtype then
+ if return_mtype == null or other.return_mtype == null then return false
+ if return_mtype.ctype != other.return_mtype.ctype then return false
+ end
+ return true
+ end
end
# The C function associated to a methoddef separately compiled
class SeparateRuntimeFunction
super AbstractRuntimeFunction
- redef fun build_c_name: String do return "{mmethoddef.c_name}"
+ # The call-side static receiver
+ var called_recv: MType
- redef fun to_s do return self.mmethoddef.to_s
+ # The call-side static signature
+ var called_signature: MSignature
- redef fun compile_to_c(compiler)
- do
- var mmethoddef = self.mmethoddef
+ # The name on the compiled method
+ redef var build_c_name: String
- var recv = self.mmethoddef.mclassdef.bound_mtype
- var v = compiler.new_visitor
- var selfvar = new RuntimeVariable("self", recv, recv)
- var arguments = new Array[RuntimeVariable]
- var frame = new Frame(v, mmethoddef, recv, arguments)
- v.frame = frame
+ # Statically call the original body instead
+ var is_thunk = false
- var msignature = mmethoddef.msignature.resolve_for(mmethoddef.mclassdef.bound_mtype, mmethoddef.mclassdef.bound_mtype, mmethoddef.mclassdef.mmodule, true)
+ redef fun to_s do return self.mmethoddef.to_s
- var sig = new FlatBuffer
- var comment = new FlatBuffer
- var ret = msignature.return_mtype
+ # The C return type (something or `void`)
+ var c_ret: String is lazy do
+ var ret = called_signature.return_mtype
if ret != null then
- sig.append("{ret.ctype} ")
- else if mmethoddef.mproperty.is_new then
- ret = recv
- sig.append("{ret.ctype} ")
+ return ret.ctype
else
- sig.append("void ")
+ return "void"
end
- sig.append(self.c_name)
- sig.append("({selfvar.mtype.ctype} {selfvar}")
- comment.append("({selfvar}: {selfvar.mtype}")
- arguments.add(selfvar)
- for i in [0..msignature.arity[ do
- var mtype = msignature.mparameters[i].mtype
- if i == msignature.vararg_rank then
- mtype = v.get_class("Array").get_mtype([mtype])
+ end
+
+ # The C signature (only the parmeter part)
+ var c_sig: String is lazy do
+ var sig = new FlatBuffer
+ sig.append("({called_recv.ctype} self")
+ for i in [0..called_signature.arity[ do
+ var mtype = called_signature.mparameters[i].mtype
+ if i == called_signature.vararg_rank then
+ mtype = mmethoddef.mclassdef.mmodule.get_primitive_class("Array").get_mtype([mtype])
end
- comment.append(", {mtype}")
sig.append(", {mtype.ctype} p{i}")
- var argvar = new RuntimeVariable("p{i}", mtype, mtype)
- arguments.add(argvar)
end
sig.append(")")
- comment.append(")")
- if ret != null then
- comment.append(": {ret}")
- end
- compiler.provide_declaration(self.c_name, "{sig};")
-
- v.add_decl("/* method {self} for {comment} */")
- v.add_decl("{sig} \{")
- if ret != null then
- frame.returnvar = v.new_var(ret)
- end
- frame.returnlabel = v.get_name("RET_LABEL")
-
- if recv != arguments.first.mtype then
- #print "{self} {recv} {arguments.first}"
- end
- mmethoddef.compile_inside_to_c(v, arguments)
-
- v.add("{frame.returnlabel.as(not null)}:;")
- if ret != null then
- v.add("return {frame.returnvar.as(not null)};")
- end
- v.add("\}")
- if not self.c_name.has_substring("VIRTUAL", 0) then compiler.names[self.c_name] = "{mmethoddef.mclassdef.mmodule.name}::{mmethoddef.mclassdef.mclass.name}::{mmethoddef.mproperty.name} ({mmethoddef.location.file.filename}:{mmethoddef.location.line_start})"
+ return sig.to_s
end
-end
-
-# The C function associated to a methoddef on a primitive type, stored into a VFT of a class
-# The first parameter (the reciever) is always typed by val* in order to accept an object value
-class VirtualRuntimeFunction
- super AbstractRuntimeFunction
- redef fun build_c_name: String do return "VIRTUAL_{mmethoddef.c_name}"
+ # The C type for the function pointer.
+ var c_funptrtype: String is lazy do return "{c_ret}(*){c_sig}"
- redef fun to_s do return self.mmethoddef.to_s
+ # The arguments, as generated by `compile_to_c`
+ private var arguments: Array[RuntimeVariable] is noinit
redef fun compile_to_c(compiler)
do
var recv = self.mmethoddef.mclassdef.bound_mtype
var v = compiler.new_visitor
- var selfvar = new RuntimeVariable("self", v.object_type, recv)
+ var selfvar = new RuntimeVariable("self", called_recv, recv)
var arguments = new Array[RuntimeVariable]
- var frame = new Frame(v, mmethoddef, recv, arguments)
+ var frame = new StaticFrame(v, mmethoddef, recv, arguments)
v.frame = frame
+ var msignature = called_signature
+ var ret = called_signature.return_mtype
+
var sig = new FlatBuffer
var comment = new FlatBuffer
-
- # Because the function is virtual, the signature must match the one of the original class
- var intromclassdef = self.mmethoddef.mproperty.intro.mclassdef
- var msignature = mmethoddef.mproperty.intro.msignature.resolve_for(intromclassdef.bound_mtype, intromclassdef.bound_mtype, intromclassdef.mmodule, true)
- var ret = msignature.return_mtype
- if ret != null then
- sig.append("{ret.ctype} ")
- else if mmethoddef.mproperty.is_new then
- ret = recv
- sig.append("{ret.ctype} ")
- else
- sig.append("void ")
- end
+ sig.append(c_ret)
+ sig.append(" ")
sig.append(self.c_name)
- sig.append("({selfvar.mtype.ctype} {selfvar}")
+ sig.append(c_sig)
comment.append("({selfvar}: {selfvar.mtype}")
arguments.add(selfvar)
for i in [0..msignature.arity[ do
mtype = v.get_class("Array").get_mtype([mtype])
end
comment.append(", {mtype}")
- sig.append(", {mtype.ctype} p{i}")
var argvar = new RuntimeVariable("p{i}", mtype, mtype)
arguments.add(argvar)
end
- sig.append(")")
comment.append(")")
if ret != null then
comment.append(": {ret}")
end
compiler.provide_declaration(self.c_name, "{sig};")
+ self.arguments = arguments.to_a
v.add_decl("/* method {self} for {comment} */")
v.add_decl("{sig} \{")
end
frame.returnlabel = v.get_name("RET_LABEL")
- var subret = v.call(mmethoddef, recv, arguments)
- if ret != null then
- assert subret != null
- v.assign(frame.returnvar.as(not null), subret)
+ if is_thunk then
+ var subret = v.call(mmethoddef, recv, arguments)
+ if ret != null then
+ assert subret != null
+ v.assign(frame.returnvar.as(not null), subret)
+ end
+ else
+ mmethoddef.compile_inside_to_c(v, arguments)
end
v.add("{frame.returnlabel.as(not null)}:;")
v.add("return {frame.returnvar.as(not null)};")
end
v.add("\}")
- if not self.c_name.has_substring("VIRTUAL", 0) then compiler.names[self.c_name] = "{mmethoddef.mclassdef.mmodule.name}::{mmethoddef.mclassdef.mclass.name}::{mmethoddef.mproperty.name} ({mmethoddef.location.file.filename}--{mmethoddef.location.line_start})"
+ compiler.names[self.c_name] = "{mmethoddef.full_name} ({mmethoddef.location.file.filename}:{mmethoddef.location.line_start})"
end
- # TODO ?
- redef fun call(v, arguments) do abort
+ # Compile the trampolines used to implement late-binding.
+ #
+ # See `opt_trampoline_call`.
+ fun compile_trampolines(compiler: SeparateCompiler)
+ do
+ var recv = self.mmethoddef.mclassdef.bound_mtype
+ var selfvar = arguments.first
+ var ret = called_signature.return_mtype
+
+ if mmethoddef.is_intro and recv.ctype == "val*" then
+ var m = mmethoddef.mproperty
+ var n2 = "CALL_" + m.const_color
+ compiler.provide_declaration(n2, "{c_ret} {n2}{c_sig};")
+ var v2 = compiler.new_visitor
+ v2.add "{c_ret} {n2}{c_sig} \{"
+ v2.require_declaration(m.const_color)
+ var call = "(({c_funptrtype})({selfvar}->class->vft[{m.const_color}]))({arguments.join(", ")});"
+ if ret != null then
+ v2.add "return {call}"
+ else
+ v2.add call
+ end
+
+ v2.add "\}"
+
+ end
+ if mmethoddef.has_supercall and recv.ctype == "val*" then
+ var m = mmethoddef
+ var n2 = "CALL_" + m.const_color
+ compiler.provide_declaration(n2, "{c_ret} {n2}{c_sig};")
+ var v2 = compiler.new_visitor
+ v2.add "{c_ret} {n2}{c_sig} \{"
+ v2.require_declaration(m.const_color)
+ var call = "(({c_funptrtype})({selfvar}->class->vft[{m.const_color}]))({arguments.join(", ")});"
+ if ret != null then
+ v2.add "return {call}"
+ else
+ v2.add call
+ end
+
+ v2.add "\}"
+ end
+ end
end
-redef class MType
- fun const_color: String do return "COLOR_{c_name}"
+redef class MEntity
+ var const_color: String is lazy do return "COLOR_{c_name}"
end
interface PropertyLayoutElement end
redef class MProperty
super PropertyLayoutElement
- fun const_color: String do return "COLOR_{c_name}"
end
redef class MPropDef
super PropertyLayoutElement
- fun const_color: String do return "COLOR_{c_name}"
end
redef class AMethPropdef
nitlanguage / nit.git / blobdiff