nitc: renamed --no-check-initialization in --no-check-attr-isset to follow the new...
[nit.git] / src / abstract_compiler.nit
index 708c041..dae3d88 100644 (file)
@@ -21,7 +21,8 @@ import literal
 import typing
 import auto_super_init
 import frontend
-import common_ffi
+import platform
+import c_tools
 
 # Add compiling options
 redef class ToolContext
@@ -41,8 +42,8 @@ redef class ToolContext
        var opt_no_shortcut_range: OptionBool = new OptionBool("Always insantiate a range and its iterator on 'for' loops", "--no-shortcut-range")
        # --no-check-covariance
        var opt_no_check_covariance: OptionBool = new OptionBool("Disable type tests of covariant parameters (dangerous)", "--no-check-covariance")
-       # --no-check-initialization
-       var opt_no_check_initialization: OptionBool = new OptionBool("Disable isset tests at the end of constructors (dangerous)", "--no-check-initialization")
+       # --no-check-attr-isset
+       var opt_no_check_attr_isset: OptionBool = new OptionBool("Disable isset tests before each attribute access (dangerous)", "--no-check-attr-isset")
        # --no-check-assert
        var opt_no_check_assert: OptionBool = new OptionBool("Disable the evaluation of explicit 'assert' and 'as' (dangerous)", "--no-check-assert")
        # --no-check-autocast
@@ -51,54 +52,99 @@ redef class ToolContext
        var opt_no_check_other: OptionBool = new OptionBool("Disable implicit tests: unset attribute, null receiver (dangerous)", "--no-check-other")
        # --typing-test-metrics
        var opt_typing_test_metrics: OptionBool = new OptionBool("Enable static and dynamic count of all type tests", "--typing-test-metrics")
-       # --no-stacktrace
-       var opt_no_stacktrace: OptionBool = new OptionBool("Disables libunwind and generation of C stack traces (can be problematic when compiling to targets such as Android or NaCl)", "--no-stacktrace")
-       # --stack-trace-C-to-Nit-name-binding
-       var opt_stacktrace: OptionBool = new OptionBool("Enables the use of gperf to bind C to Nit function names when encountering a Stack trace at runtime", "--nit-stacktrace")
+       # --invocation-metrics
+       var opt_invocation_metrics: OptionBool = new OptionBool("Enable static and dynamic count of all method invocations", "--invocation-metrics")
+       # --stacktrace
+       var opt_stacktrace: OptionString = new OptionString("Control the generation of stack traces", "--stacktrace")
+       # --no-gcc-directives
+       var opt_no_gcc_directive = new OptionArray("Disable a advanced gcc directives for optimization", "--no-gcc-directive")
 
        redef init
        do
                super
                self.option_context.add_option(self.opt_output, self.opt_no_cc, self.opt_make_flags, self.opt_compile_dir, self.opt_hardening, self.opt_no_shortcut_range)
-               self.option_context.add_option(self.opt_no_check_covariance, self.opt_no_check_initialization, self.opt_no_check_assert, self.opt_no_check_autocast, self.opt_no_check_other)
-               self.option_context.add_option(self.opt_typing_test_metrics)
+               self.option_context.add_option(self.opt_no_check_covariance, self.opt_no_check_attr_isset, self.opt_no_check_assert, self.opt_no_check_autocast, self.opt_no_check_other)
+               self.option_context.add_option(self.opt_typing_test_metrics, self.opt_invocation_metrics)
                self.option_context.add_option(self.opt_stacktrace)
-               self.option_context.add_option(self.opt_no_stacktrace)
+               self.option_context.add_option(self.opt_no_gcc_directive)
+       end
+
+       redef fun process_options(args)
+       do
+               super
+
+               var st = opt_stacktrace.value
+               if st == null or st == "none" or st == "libunwind" or st == "nitstack" then
+                       # Fine, do nothing
+               else if st == "auto" then
+                       # Default just unset
+                       opt_stacktrace.value = null
+               else
+                       print "Error: unknown value `{st}` for --stacktrace. Use `none`, `libunwind`, `nitstack` or `auto`."
+                       exit(1)
+               end
        end
 end
 
 redef class ModelBuilder
+       # The compilation directory
+       var compile_dir: String
+
+       # Simple indirection to `Toolchain::write_and_make`
+       protected fun write_and_make(compiler: AbstractCompiler)
+       do
+               var platform = compiler.mainmodule.target_platform
+               var toolchain
+               if platform == null then
+                       toolchain = new MakefileToolchain(toolcontext)
+               else
+                       toolchain = platform.toolchain(toolcontext)
+               end
+               compile_dir = toolchain.compile_dir
+               toolchain.write_and_make compiler
+       end
+end
+
+redef class Platform
+       fun toolchain(toolcontext: ToolContext): Toolchain is abstract
+end
+
+class Toolchain
+       var toolcontext: ToolContext
+
+       fun compile_dir: String
+       do
+               var compile_dir = toolcontext.opt_compile_dir.value
+               if compile_dir == null then compile_dir = ".nit_compile"
+               return compile_dir
+       end
+
+       fun write_and_make(compiler: AbstractCompiler) is abstract
+end
+
+class MakefileToolchain
+       super Toolchain
        # The list of directories to search for included C headers (-I for C compilers)
        # The list is initially set with :
        #   * the toolcontext --cc-path option
        #   * the NIT_CC_PATH environment variable
-       #   * some heuristics including the NIT_DIR environment variable and the progname of the process
+       #   * `toolcontext.nit_dir`
        # Path can be added (or removed) by the client
        var cc_paths = new Array[String]
 
-       redef init(model, toolcontext)
+       protected fun gather_cc_paths
        do
-               super
-
                # Look for the the Nit clib path
-               var path_env = "NIT_DIR".environ
-               if not path_env.is_empty then
+               var path_env = toolcontext.nit_dir
+               if path_env != null then
                        var libname = "{path_env}/clib"
                        if libname.file_exists then cc_paths.add(libname)
                end
 
-               var libname = "{sys.program_name.dirname}/../clib"
-               if libname.file_exists then cc_paths.add(libname.simplify_path)
-
                if cc_paths.is_empty then
                        toolcontext.error(null, "Cannot determine the nit clib path. define envvar NIT_DIR.")
                end
 
-               if toolcontext.opt_no_stacktrace.value and toolcontext.opt_stacktrace.value then
-                       print "Cannot use --nit-stacktrace when --no-stacktrace is activated"
-                       exit(1)
-               end
-
                # Add user defined cc_paths
                cc_paths.append(toolcontext.opt_cc_path.value)
 
@@ -106,18 +152,14 @@ redef class ModelBuilder
                if not path_env.is_empty then
                        cc_paths.append(path_env.split_with(':'))
                end
-
-               var compile_dir = toolcontext.opt_compile_dir.value
-               if compile_dir == null then compile_dir = ".nit_compile"
-               self.compile_dir = compile_dir
        end
 
-       # The compilation directory
-       var compile_dir: String
-
-       protected fun write_and_make(compiler: AbstractCompiler)
+       redef fun write_and_make(compiler)
        do
+               gather_cc_paths
+
                var mainmodule = compiler.mainmodule
+               var compile_dir = compile_dir
 
                # Generate the .h and .c files
                # A single C file regroups many compiled rumtime functions
@@ -152,7 +194,7 @@ redef class ModelBuilder
 
        fun write_files(compiler: AbstractCompiler, compile_dir: String, cfiles: Array[String])
        do
-               if self.toolcontext.opt_stacktrace.value then compiler.build_c_to_nit_bindings
+               if self.toolcontext.opt_stacktrace.value == "nitstack" then compiler.build_c_to_nit_bindings
 
                # Add gc_choser.h to aditionnal bodies
                var gc_chooser = new ExternCFile("gc_chooser.c", "-DWITH_LIBGC")
@@ -161,11 +203,9 @@ redef class ModelBuilder
                compiler.files_to_copy.add "{cc_paths.first}/gc_chooser.h"
 
                # FFI
-               for m in compiler.mainmodule.in_importation.greaters do if mmodule2nmodule.keys.has(m) then
-                       var amodule = mmodule2nmodule[m]
-                       if m.uses_ffi or amodule.uses_legacy_ni then
-                               compiler.finalize_ffi_for_module(amodule)
-                       end
+               var m2m = toolcontext.modelbuilder.mmodule2nmodule
+               for m in compiler.mainmodule.in_importation.greaters do
+                       compiler.finalize_ffi_for_module(m)
                end
 
                # Copy original .[ch] files to compile_dir
@@ -198,7 +238,12 @@ redef class ModelBuilder
                        hfile.write "#include \"{hfilename}\"\n"
                        for key in f.required_declarations do
                                if not compiler.provided_declarations.has_key(key) then
-                                       print "No provided declaration for {key}"
+                                       var node = compiler.requirers_of_declarations.get_or_null(key)
+                                       if node != null then
+                                               node.debug "No provided declaration for {key}"
+                                       else
+                                               print "No provided declaration for {key}"
+                                       end
                                        abort
                                end
                                hfile.write compiler.provided_declarations[key]
@@ -258,12 +303,14 @@ redef class ModelBuilder
                end
 
                var linker_options = new HashSet[String]
-               for m in mainmodule.in_importation.greaters do if mmodule2nmodule.keys.has(m) then
-                       var amod = mmodule2nmodule[m]
-                       linker_options.add(amod.c_linker_options)
+               var m2m = toolcontext.modelbuilder.mmodule2nmodule
+               for m in mainmodule.in_importation.greaters do
+                       var libs = m.collect_linker_libs
+                       if libs != null then linker_options.add_all(libs)
                end
 
-               if not toolcontext.opt_no_stacktrace.value then linker_options.add("-lunwind")
+               var ost = toolcontext.opt_stacktrace.value
+               if ost == "libunwind" or ost == "nitstack" then linker_options.add("-lunwind")
 
                makefile.write("CC = ccache cc\nCFLAGS = -g -O2\nCINCL = {cc_includes}\nLDFLAGS ?= \nLDLIBS  ?= -lm -lgc {linker_options.join(" ")}\n\n")
                makefile.write("all: {outpath}\n\n")
@@ -273,33 +320,39 @@ redef class ModelBuilder
                # Compile each generated file
                for f in cfiles do
                        var o = f.strip_extension(".c") + ".o"
-                       makefile.write("{o}: {f}\n\t$(CC) $(CFLAGS) $(CINCL) -D NONITCNI -c -o {o} {f}\n\n")
+                       makefile.write("{o}: {f}\n\t$(CC) $(CFLAGS) $(CINCL) -c -o {o} {f}\n\n")
                        ofiles.add(o)
                        dep_rules.add(o)
                end
 
+               var java_files = new Array[ExternFile]
+
                # Compile each required extern body into a specific .o
                for f in compiler.extern_bodies do
-                       if f isa ExternCFile then
-                               var basename = f.filename.basename(".c")
-                               var o = "{basename}.extern.o"
-                               var ff = f.filename.basename("")
-                               makefile.write("{o}: {ff}\n\t$(CC) $(CFLAGS) -D NONITCNI {f.cflags} -c -o {o} {ff}\n\n")
-                               ofiles.add(o)
-                               dep_rules.add(o)
-                       else
-                               var o = f.makefile_rule_name
-                               var ff = f.filename.basename("")
-                               makefile.write("{o}: {ff}\n")
-                               makefile.write("\t{f.makefile_rule_content}\n")
-                               dep_rules.add(f.makefile_rule_name)
+                       var o = f.makefile_rule_name
+                       var ff = f.filename.basename("")
+                       makefile.write("{o}: {ff}\n")
+                       makefile.write("\t{f.makefile_rule_content}\n\n")
+                       dep_rules.add(f.makefile_rule_name)
 
-                               if f isa ExternCppFile then ofiles.add(o)
-                       end
+                       if f.compiles_to_o_file then ofiles.add(o)
+                       if f.add_to_jar then java_files.add(f)
+               end
+               
+               if not java_files.is_empty then
+                       var jar_file = "{outpath}.jar"
+
+                       var class_files_array = new Array[String]
+                       for f in java_files do class_files_array.add(f.makefile_rule_name)
+                       var class_files = class_files_array.join(" ")
+
+                       makefile.write("{jar_file}: {class_files}\n")
+                       makefile.write("\tjar cf {jar_file} {class_files}\n\n")
+                       dep_rules.add jar_file
                end
 
                # Link edition
-               makefile.write("{outpath}: {ofiles.join(" ")}\n\t$(CC) $(LDFLAGS) -o {outpath} {ofiles.join(" ")} $(LDLIBS)\n\n")
+               makefile.write("{outpath}: {dep_rules.join(" ")}\n\t$(CC) $(LDFLAGS) -o {outpath} {ofiles.join(" ")} $(LDLIBS)\n\n")
                # Clean
                makefile.write("clean:\n\trm {ofiles.join(" ")} 2>/dev/null\n\n")
                makefile.close
@@ -383,36 +436,48 @@ abstract class AbstractCompiler
 
        private var provided_declarations = new HashMap[String, String]
 
+       private var requirers_of_declarations = new HashMap[String, ANode]
+
        # Builds the .c and .h files to be used when generating a Stack Trace
        # Binds the generated C function names to Nit function names
        fun build_c_to_nit_bindings
        do
                var compile_dir = modelbuilder.compile_dir
 
-               var stream = new OFStream.open("{compile_dir}/C_fun_names")
-               stream.write("%\{\n#include \"c_functions_hash.h\"\n%\}\n")
-               stream.write("%define lookup-function-name get_nit_name\n")
-               stream.write("struct C_Nit_Names;\n")
-               stream.write("%%\n")
-               stream.write("####\n")
+               var stream = new OFStream.open("{compile_dir}/c_functions_hash.c")
+               stream.write("#include <string.h>\n")
+               stream.write("#include <stdlib.h>\n")
+               stream.write("#include \"c_functions_hash.h\"\n")
+               stream.write("typedef struct C_Nit_Names\{char* name; char* nit_name;\}C_Nit_Names;\n")
+               stream.write("const char* get_nit_name(register const char* procproc, register unsigned int len)\{\n")
+               stream.write("char* procname = malloc(len+1);")
+               stream.write("memcpy(procname, procproc, len);")
+               stream.write("procname[len] = '\\0';")
+               stream.write("static const C_Nit_Names map[{names.length}] = \{\n")
                for i in names.keys do
+                       stream.write("\{\"")
                        stream.write(i)
-                       stream.write(",\t\"")
+                       stream.write("\",\"")
                        stream.write(names[i])
-                       stream.write("\"\n")
-               end
-               stream.write("####\n")
-               stream.write("%%\n")
+                       stream.write("\"\},\n")
+               end
+               stream.write("\};\n")
+               stream.write("int i;")
+               stream.write("for(i = 0; i < {names.length}; i++)\{")
+               stream.write("if(strcmp(procname,map[i].name) == 0)\{")
+               stream.write("free(procname);")
+               stream.write("return map[i].nit_name;")
+               stream.write("\}")
+               stream.write("\}")
+               stream.write("free(procname);")
+               stream.write("return NULL;")
+               stream.write("\}\n")
                stream.close
 
                stream = new OFStream.open("{compile_dir}/c_functions_hash.h")
-               stream.write("typedef struct C_Nit_Names\{char* name; char* nit_name;\}C_Nit_Names;\n")
-               stream.write("const struct C_Nit_Names* get_nit_name(register const char *str, register unsigned int len);\n")
+               stream.write("const char* get_nit_name(register const char* procname, register unsigned int len);\n")
                stream.close
 
-               var x = new Process("gperf","{compile_dir}/C_fun_names","-t","-7","--output-file={compile_dir}/c_functions_hash.c","-C")
-               x.wait
-
                extern_bodies.add(new ExternCFile("{compile_dir}/c_functions_hash.c", ""))
        end
 
@@ -429,8 +494,26 @@ abstract class AbstractCompiler
                compile_header_structs
                compile_nitni_structs
 
-               # Signal handler function prototype
-               self.header.add_decl("void show_backtrace(int);")
+               var gccd_disable = modelbuilder.toolcontext.opt_no_gcc_directive.value
+               if gccd_disable.has("noreturn") or gccd_disable.has("all") then
+                       # Signal handler function prototype
+                       self.header.add_decl("void show_backtrace(int);")
+               else
+                       self.header.add_decl("void show_backtrace(int) __attribute__ ((noreturn));")
+               end
+
+               if gccd_disable.has("likely") or gccd_disable.has("all") then
+                       self.header.add_decl("#define likely(x)       (x)")
+                       self.header.add_decl("#define unlikely(x)     (x)")
+               else if gccd_disable.has("correct-likely") then
+                       # invert the `likely` definition
+                       # Used by masochists to bench the worst case
+                       self.header.add_decl("#define likely(x)       __builtin_expect((x),0)")
+                       self.header.add_decl("#define unlikely(x)     __builtin_expect((x),1)")
+               else
+                       self.header.add_decl("#define likely(x)       __builtin_expect((x),1)")
+                       self.header.add_decl("#define unlikely(x)     __builtin_expect((x),0)")
+               end
 
                # Global variable used by intern methods
                self.header.add_decl("extern int glob_argc;")
@@ -452,13 +535,20 @@ abstract class AbstractCompiler
        fun compile_main_function
        do
                var v = self.new_visitor
-               if modelbuilder.toolcontext.opt_stacktrace.value then
-                       v.add_decl("#include \"c_functions_hash.h\"")
-               end
                v.add_decl("#include <signal.h>")
-               if not modelbuilder.toolcontext.opt_no_stacktrace.value then
+               var ost = modelbuilder.toolcontext.opt_stacktrace.value
+
+               if ost == null then
+                       ost = "nitstack"
+                       modelbuilder.toolcontext.opt_stacktrace.value = ost
+               end
+
+               if ost == "nitstack" or ost == "libunwind" then
                        v.add_decl("#define UNW_LOCAL_ONLY")
                        v.add_decl("#include <libunwind.h>")
+                       if ost == "nitstack" then
+                               v.add_decl("#include \"c_functions_hash.h\"")
+                       end
                end
                v.add_decl("int glob_argc;")
                v.add_decl("char **glob_argv;")
@@ -475,13 +565,22 @@ abstract class AbstractCompiler
                        end
                end
 
+               if self.modelbuilder.toolcontext.opt_invocation_metrics.value then
+                       v.add_decl("long count_invoke_by_tables;")
+                       v.add_decl("long count_invoke_by_direct;")
+                       v.add_decl("long count_invoke_by_inline;")
+                       v.compiler.header.add_decl("extern long count_invoke_by_tables;")
+                       v.compiler.header.add_decl("extern long count_invoke_by_direct;")
+                       v.compiler.header.add_decl("extern long count_invoke_by_inline;")
+               end
+
                v.add_decl("void sig_handler(int signo)\{")
                v.add_decl("printf(\"Caught signal : %s\\n\", strsignal(signo));")
                v.add_decl("show_backtrace(signo);")
                v.add_decl("\}")
 
                v.add_decl("void show_backtrace (int signo) \{")
-               if not modelbuilder.toolcontext.opt_no_stacktrace.value then
+               if ost == "nitstack" or ost == "libunwind" then
                        v.add_decl("char* opt = getenv(\"NIT_NO_STACK\");")
                        v.add_decl("unw_cursor_t cursor;")
                        v.add_decl("if(opt==NULL)\{")
@@ -495,10 +594,10 @@ abstract class AbstractCompiler
                        v.add_decl("printf(\"-------------------------------------------------\\n\");")
                        v.add_decl("while (unw_step(&cursor) > 0) \{")
                        v.add_decl("    unw_get_proc_name(&cursor, procname, 100, &ip);")
-                       if modelbuilder.toolcontext.opt_stacktrace.value then
-                       v.add_decl("    const C_Nit_Names* recv = get_nit_name(procname, strlen(procname));")
-                       v.add_decl("    if (recv != 0)\{")
-                       v.add_decl("            printf(\"` %s\\n\", recv->nit_name);")
+                       if ost == "nitstack" then
+                       v.add_decl("    const char* recv = get_nit_name(procname, strlen(procname));")
+                       v.add_decl("    if (recv != NULL)\{")
+                       v.add_decl("            printf(\"` %s\\n\", recv);")
                        v.add_decl("    \}else\{")
                        v.add_decl("            printf(\"` %s\\n\", procname);")
                        v.add_decl("    \}")
@@ -521,6 +620,7 @@ abstract class AbstractCompiler
                v.add("signal(SIGINT, sig_handler);")
                v.add("signal(SIGTERM, sig_handler);")
                v.add("signal(SIGSEGV, sig_handler);")
+               v.add("signal(SIGPIPE, sig_handler);")
 
                v.add("glob_argc = argc; glob_argv = argv;")
                v.add("initialize_gc_option();")
@@ -565,6 +665,14 @@ abstract class AbstractCompiler
                        end
                end
 
+               if self.modelbuilder.toolcontext.opt_invocation_metrics.value then
+                       v.add_decl("long count_invoke_total;")
+                       v.add("count_invoke_total = count_invoke_by_tables + count_invoke_by_direct + count_invoke_by_inline;")
+                       v.add("printf(\"# dynamic count_invocation: total %ld\\n\", count_invoke_total);")
+                       v.add("printf(\"by table: %ld (%.2f%%)\\n\", count_invoke_by_tables, 100.0*count_invoke_by_tables/count_invoke_total);")
+                       v.add("printf(\"direct:   %ld (%.2f%%)\\n\", count_invoke_by_direct, 100.0*count_invoke_by_direct/count_invoke_total);")
+                       v.add("printf(\"inlined:  %ld (%.2f%%)\\n\", count_invoke_by_inline, 100.0*count_invoke_by_inline/count_invoke_total);")
+               end
                v.add("return 0;")
                v.add("\}")
        end
@@ -662,6 +770,8 @@ abstract class AbstractCompiler
                end
        end
 
+       fun finalize_ffi_for_module(mmodule: MModule) do mmodule.finalize_ffi(self)
+
        # Division facility
        # Avoid division by zero by returning the string "n/a"
        fun div(a,b:Int):String
@@ -669,16 +779,6 @@ abstract class AbstractCompiler
                if b == 0 then return "n/a"
                return ((a*10000/b).to_f / 100.0).to_precision(2)
        end
-
-       fun finalize_ffi_for_module(nmodule: AModule)
-       do
-               var visitor = new_visitor
-               nmodule.finalize_ffi(visitor, modelbuilder)
-               nmodule.finalize_nitni(visitor)
-       end
-
-       # Does this compiler support the FFI?
-       fun supports_ffi: Bool do return false
 end
 
 # A file unit (may be more than one file if
@@ -889,7 +989,7 @@ abstract class AbstractCompilerVisitor
 
                var maybenull = recv.mcasttype isa MNullableType or recv.mcasttype isa MNullType
                if maybenull then
-                       self.add("if ({recv} == NULL) \{")
+                       self.add("if (unlikely({recv} == NULL)) \{")
                        self.add_abort("Receiver is null")
                        self.add("\}")
                end
@@ -1035,7 +1135,11 @@ abstract class AbstractCompilerVisitor
        # Request the presence of a global declaration
        fun require_declaration(key: String)
        do
-               self.writer.file.required_declarations.add(key)
+               var reqs = self.writer.file.required_declarations
+               if reqs.has(key) then return
+               reqs.add(key)
+               var node = current_node
+               if node != null then compiler.requirers_of_declarations[key] = node
        end
 
        # Add a declaration in the local-header
@@ -1104,7 +1208,7 @@ abstract class AbstractCompilerVisitor
        fun add_cast(value: RuntimeVariable, mtype: MType, tag: String)
        do
                var res = self.type_test(value, mtype, tag)
-               self.add("if (!{res}) \{")
+               self.add("if (unlikely(!{res})) \{")
                var cn = self.class_name_string(value)
                self.add("fprintf(stderr, \"Runtime error: Cast failed. Expected `%s`, got `%s`\", \"{mtype.to_s.escape_to_c}\", {cn});")
                self.add_raw_abort
@@ -1509,13 +1613,13 @@ redef class AConcreteMethPropdef
                # Call the implicit super-init
                var auto_super_inits = self.auto_super_inits
                if auto_super_inits != null then
-                       var selfarg = [arguments.first]
+                       var args = [arguments.first]
                        for auto_super_init in auto_super_inits do
-                               if auto_super_init.intro.msignature.arity == 0 then
-                                       v.send(auto_super_init, selfarg)
-                               else
-                                       v.send(auto_super_init, arguments)
+                               args.clear
+                               for i in [0..auto_super_init.msignature.arity+1[ do
+                                       args.add(arguments[i])
                                end
+                               v.compile_callsite(auto_super_init, args)
                        end
                end
                v.stmt(self.n_block)
@@ -1560,12 +1664,6 @@ redef class AInternMethPropdef
                        else if pname == "unary -" then
                                v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
                                return
-                       else if pname == "succ" then
-                               v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
-                               return
-                       else if pname == "prec" then
-                               v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
-                               return
                        else if pname == "*" then
                                v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
                                return
@@ -1614,10 +1712,10 @@ redef class AInternMethPropdef
                        else if pname == "object_id" then
                                v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
                                return
-                       else if pname == "+" then
+                       else if pname == "successor" then
                                v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
                                return
-                       else if pname == "-" then
+                       else if pname == "predecessor" then
                                v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
                                return
                        else if pname == "==" then
@@ -1627,12 +1725,6 @@ redef class AInternMethPropdef
                                var res = v.equal_test(arguments[0], arguments[1])
                                v.ret(v.new_expr("!{res}", ret.as(not null)))
                                return
-                       else if pname == "succ" then
-                               v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
-                               return
-                       else if pname == "prec" then
-                               v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
-                               return
                        else if pname == "<" then
                                v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
                                return
@@ -2142,29 +2234,29 @@ redef class AForExpr
                var cl = v.expr(self.n_expr, null)
                var it_meth = self.method_iterator
                assert it_meth != null
-               var it = v.send(it_meth, [cl])
+               var it = v.compile_callsite(it_meth, [cl])
                assert it != null
                v.add("for(;;) \{")
                var isok_meth = self.method_is_ok
                assert isok_meth != null
-               var ok = v.send(isok_meth, [it])
+               var ok = v.compile_callsite(isok_meth, [it])
                assert ok != null
                v.add("if(!{ok}) break;")
                if self.variables.length == 1 then
                        var item_meth = self.method_item
                        assert item_meth != null
-                       var i = v.send(item_meth, [it])
+                       var i = v.compile_callsite(item_meth, [it])
                        assert i != null
                        v.assign(v.variable(variables.first), i)
                else if self.variables.length == 2 then
                        var key_meth = self.method_key
                        assert key_meth != null
-                       var i = v.send(key_meth, [it])
+                       var i = v.compile_callsite(key_meth, [it])
                        assert i != null
                        v.assign(v.variable(variables[0]), i)
                        var item_meth = self.method_item
                        assert item_meth != null
-                       i = v.send(item_meth, [it])
+                       i = v.compile_callsite(item_meth, [it])
                        assert i != null
                        v.assign(v.variable(variables[1]), i)
                else
@@ -2174,7 +2266,7 @@ redef class AForExpr
                v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
                var next_meth = self.method_next
                assert next_meth != null
-               v.send(next_meth, [it])
+               v.compile_callsite(next_meth, [it])
                v.add("\}")
                v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
        end
@@ -2186,7 +2278,7 @@ redef class AAssertExpr
                if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return
 
                var cond = v.expr_bool(self.n_expr)
-               v.add("if (!{cond}) \{")
+               v.add("if (unlikely(!{cond})) \{")
                v.stmt(self.n_else)
                var nid = self.n_id
                if nid != null then
@@ -2317,7 +2409,7 @@ redef class ACrangeExpr
                var i2 = v.expr(self.n_expr2, null)
                var mtype = self.mtype.as(MClassType)
                var res = v.init_instance(mtype)
-               var it = v.send(v.get_property("init", res.mtype), [res, i1, i2])
+               var it = v.compile_callsite(init_callsite.as(not null), [res, i1, i2])
                return res
        end
 end
@@ -2329,7 +2421,7 @@ redef class AOrangeExpr
                var i2 = v.expr(self.n_expr2, null)
                var mtype = self.mtype.as(MClassType)
                var res = v.init_instance(mtype)
-               var it = v.send(v.get_property("without_last", res.mtype), [res, i1, i2])
+               var it = v.compile_callsite(init_callsite.as(not null), [res, i1, i2])
                return res
        end
 end
@@ -2371,7 +2463,7 @@ redef class AAsNotnullExpr
                var i = v.expr(self.n_expr, null)
                if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
 
-               v.add("if ({i} == NULL) \{")
+               v.add("if (unlikely({i} == NULL)) \{")
                v.add_abort("Cast failed")
                v.add("\}")
                return i
@@ -2444,22 +2536,26 @@ redef class ASuperExpr
                for a in self.n_args.n_exprs do
                        args.add(v.expr(a, null))
                end
-               if args.length == 1 then
-                       args = v.frame.arguments
-               end
 
                var callsite = self.callsite
                if callsite != null then
-                       if callsite.mproperty.intro.msignature.arity == 0 then
-                               args = [recv]
+                       # Add additionnals arguments for the super init call
+                       if args.length == 1 then
+                               for i in [0..callsite.mproperty.intro.msignature.arity[ do
+                                       args.add(v.frame.arguments[i+1])
+                               end
                        end
                        # Super init call
                        var res = v.compile_callsite(callsite, args)
                        return res
                end
 
+               if args.length == 1 then
+                       args = v.frame.arguments
+               end
+
                # stantard call-next-method
-               return v.supercall(v.frame.mpropdef.as(MMethodDef), recv.mtype.as(MClassType), args)
+               return v.supercall(mpropdef.as(not null), recv.mtype.as(MClassType), args)
        end
 end
 
@@ -2571,15 +2667,11 @@ redef class MModule
                return properties_cache[mclass]
        end
        private var properties_cache: Map[MClass, Set[MProperty]] = new HashMap[MClass, Set[MProperty]]
-end
-
-redef class AModule
-       # Does this module use the legacy native interface?
-       fun uses_legacy_ni: Bool is abstract
 
-       # Write FFI results to file
-       fun finalize_ffi(v: AbstractCompilerVisitor, modelbuilder: ModelBuilder) is abstract
+       # Write FFI and nitni results to file
+       fun finalize_ffi(c: AbstractCompiler) do end
 
-       # Write nitni results to file
-       fun finalize_nitni(v: AbstractCompilerVisitor) is abstract
+       # Give requided addinional system libraries (as given to LD_LIBS)
+       # Note: can return null instead of an empty set
+       fun collect_linker_libs: nullable Set[String] do return null
 end