diff options
author | shyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-01-09 13:30:31 +0000 |
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committer | shyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-01-09 13:30:31 +0000 |
commit | 55317a74f7df73bb3531ade54418c4bf6f95b30b (patch) | |
tree | e83ff5745104434e1373cafe8bb5a859a05b59c2 /tool/ruby_vm/models/operands_unifications.rb | |
parent | ae4045f0cab0a9188124a00f55fdb804a3ec1cfd (diff) |
delete tool/instruction.rb
Previous commit changed insns.def format. Now is the time for its
generators. In doing so I chose to modernize the system, not just
patch. My attempt includes
- extensive use of Onigumo regular expressions
- split from one big file (instruction.rb) into separated MVC
- partial view
Also, let me take this opportunity to kill old unused features
such as
- stack caching
- minsns / yasmdata which are never seriously used
- yarvarch document generation (moved to doc/)
- vast majority of unused arguments to insns2vm.rb
This commit generates VM source codes that cleanly compile, and
the generated binary passes tests. At least for me.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61733 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'tool/ruby_vm/models/operands_unifications.rb')
-rw-r--r-- | tool/ruby_vm/models/operands_unifications.rb | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/tool/ruby_vm/models/operands_unifications.rb b/tool/ruby_vm/models/operands_unifications.rb new file mode 100644 index 0000000000..c0ae0ece45 --- /dev/null +++ b/tool/ruby_vm/models/operands_unifications.rb @@ -0,0 +1,137 @@ +#! /your/favourite/path/to/ruby +# -*- mode: ruby; coding: utf-8; indent-tabs-mode: nil; ruby-indent-level: 2 -*- +# -*- frozen_string_literal: true; -*- +# -*- warn_indent: true; -*- +# +# Copyright (c) 2017 Urabe, Shyouhei. All rights reserved. +# +# This file is a part of the programming language Ruby. Permission is hereby +# granted, to either redistribute and/or modify this file, provided that the +# conditions mentioned in the file COPYING are met. Consult the file for +# details. + +require_relative '../helpers/c_escape' +require_relative '../loaders/opt_operand_def' +require_relative 'bare_instructions' + +class RubyVM::OperandsUnifications < RubyVM::BareInstructions + include RubyVM::CEscape + + attr_reader :preamble, :original, :spec + + def initialize location:, signature: + name = signature[0] + @original = RubyVM::BareInstructions.fetch name + template = @original.template + parts = compose location, signature, template[:signature] + json = template.dup + json[:location] = location + json[:signature] = parts[:signature] + json[:name] = parts[:name] + @preamble = parts[:preamble] + @spec = parts[:spec] + super template: template, **json + parts[:vars].each do |v| + @variables[v[:name]] ||= v + end + end + + def operand_shift_of var + before = @original.opes.find_index var + after = @opes.find_index var + raise "no #{var} for #{@name}" unless before and after + return before - after + end + + def condition ptr + # :FIXME: I'm not sure if this method should be in model? + exprs = @spec.each_with_index.map do |(var, val), i| + case val when '*' then + next nil + else + type = @original.opes[i][:type] + expr = RubyVM::Typemap.typecast_to_VALUE type, val + next "#{ptr}[#{i}] == #{expr}" + end + end + exprs.compact! + if exprs.size == 1 then + return exprs[0] + else + exprs.map! {|i| "(#{i})" } + return exprs.join ' && ' + end + end + + private + + def namegen signature + insn, argv = *signature + wcary = argv.map do |i| + case i when '*' then + 'WC' + else + i + end + end + as_tr_cpp [insn, *wcary].join(', ') + end + + def compose location, spec, template + name = namegen spec + *, argv = *spec + opes = @original.opes + if opes.size != argv.size + raise sprintf("operand size mismatch for %s (%s's: %d, given: %d)", + name, template[:name], opes.size, argv.size) + else + src = [] + mod = [] + spec = [] + vars = [] + argv.each_index do |i| + j = argv[i] + k = opes[i] + spec[i] = [k, j] + case j when '*' then + # operand is from iseq + mod << k[:decl] + else + # operand is inside C + vars << k + src << { + location: location, + expr: " #{k[:name]} = #{j};" + } + end + end + src.map! {|i| RubyVM::CExpr.new i } + return { + name: name, + signature: { + name: name, + ope: mod, + pop: template[:pop], + ret: template[:ret], + }, + preamble: src, + vars: vars, + spec: spec + } + end + end + + @instances = RubyVM::OptOperandDef.map do |h| + new(**h) + end + + def self.to_a + @instances + end + + def self.each_group + to_a.group_by(&:original).each_pair do |k, v| + yield k, v + end + end +end |