diff options
Diffstat (limited to 'tool/ruby_vm/views/_mjit_compile_insn.erb')
| -rw-r--r-- | tool/ruby_vm/views/_mjit_compile_insn.erb | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/tool/ruby_vm/views/_mjit_compile_insn.erb b/tool/ruby_vm/views/_mjit_compile_insn.erb new file mode 100644 index 0000000000..60ba2505d2 --- /dev/null +++ b/tool/ruby_vm/views/_mjit_compile_insn.erb @@ -0,0 +1,133 @@ +% # -*- mode:c; style:ruby; coding: utf-8; indent-tabs-mode: nil -*- +% # Copyright (c) 2018 Takashi Kokubun. 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. +% +% trace_enablable_insns = [ +% 'opt_send_without_block', +% 'send', +% 'invokeblock', +% 'invokesuper', +% ] +% +% to_cstr = lambda do |line| +% normalized = line.gsub(/\t/, ' ' * 8) +% indented = normalized.sub(/\A(?!#)/, ' ') # avoid indenting preprocessor +% rstring2cstr(indented.rstrip).sub(/"\z/, '\\n"') +% end +% + fprintf(f, "{\n"); + { +% # compiler: Prepare operands which may be used by `insn.call_attribute` +% insn.opes.each_with_index do |ope, i| + MAYBE_UNUSED(<%= ope.fetch(:decl) %>) = (<%= ope.fetch(:type) %>)operands[<%= i %>]; +% end +% +% # JIT: Declare variables for operands, popped values and return values +% ret_decls = insn.rets.map { |r| "MAYBE_UNUSED(#{r.fetch(:type)}) #{r.fetch(:name)}"} # TODO: fix #declarations to return Hash... +% insn.declarations.each do |decl| +% next if dispatched && ret_decls.include?(decl) # return value should be propagated to dispatcher. TODO: assert it's the same as dispatcher + fprintf(f, " <%= decl %>;\n"); +% end + +% # JIT: Set const expressions for `RubyVM::OperandsUnifications` insn +% insn.preamble.each do |amble| + fprintf(f, "<%= amble.expr %>\n"); +% end +% +% # JIT: Initialize operands +% insn.opes.each_with_index do |ope, i| + fprintf(f, " <%= ope.fetch(:name) %> = (<%= ope.fetch(:type) %>)0x%"PRIxVALUE";\n", operands[<%= i %>]); +% end +% +% # JIT: Initialize popped values +% insn.pops.reverse_each.with_index.reverse_each do |pop, i| + fprintf(f, " <%= pop.fetch(:name) %> = stack[%d];\n", b->stack_size - <%= i + 1 %>); +% end +% +% # JIT: move sp and pc if necessary +% if insn.handles_frame? + fprintf(f, " reg_cfp->pc = (VALUE *)0x%"PRIxVALUE";\n", (VALUE)(body->iseq_encoded + next_pos)); /* ADD_PC(INSN_ATTR(width)); */ + fprintf(f, " reg_cfp->sp = reg_cfp->bp + %d;\n", b->stack_size + 1 - <%= insn.pops.size %>); /* POPN(INSN_ATTR(popn)); */ +% else + fprintf(f, " reg_cfp->pc = (VALUE *)0x%"PRIxVALUE";\n", (VALUE)(body->iseq_encoded + pos)); + fprintf(f, " reg_cfp->sp = reg_cfp->bp + %d;\n", b->stack_size + 1); +% end +% +% # JIT: Print insn body in insns.def +% insn.expr.expr.each_line do |line| +% # Special macro expansion for ones that can't be resolved by macro redefinition. +% if line =~ /\A\s+DISPATCH_ORIGINAL_INSN\((?<insn_name>[^)]+)\);\s+\z/ + fprintf(f, " return Qundef; /* cancel JIT */\n"); +% elsif line =~ /\A\s+JUMP\((?<dest>[^)]+)\);\s+\z/ +% # Before we `goto` next insn, we need to set return values, especially for getinlinecache +% insn.rets.reverse_each.with_index do |ret, i| +% # TOPN(n) = ... + fprintf(f, " stack[%d] = <%= ret.fetch(:name) %>;\n", b->stack_size + (int)<%= insn.call_attribute('sp_inc') %> - <%= i + 1 %>); +% end +% +% dest = Regexp.last_match[:dest] +% if insn.name == 'opt_case_dispatch' # special case... TODO: use another macro to avoid checking name + { + struct case_dispatch_var arg; + arg.f = f; + arg.base_pos = pos + insn_len(insn); + arg.last_value = Qundef; + + fprintf(f, " switch (<%= dest %>) {\n"); + st_foreach(RHASH_TBL_RAW(hash), compile_case_dispatch_each, (VALUE)&arg); + fprintf(f, " case %lu:\n", else_offset); + fprintf(f, " goto label_%lu;\n", arg.base_pos + else_offset); + fprintf(f, " }\n"); + } +% else + next_pos = pos + insn_len(insn) + (unsigned int)<%= dest %>; + fprintf(f, " goto label_%d;\n", next_pos); +% end +% elsif line =~ /\A\s+RESTORE_REGS\(\);\s+\z/ # for `leave` only +#if OPT_CALL_THREADED_CODE + fprintf(f, " rb_ec_thread_ptr(ec)->retval = val;\n"); + fprintf(f, " return 0;\n"); +#else + fprintf(f, " return val;\n"); +#endif +% else + fprintf(f, <%= to_cstr.call(line) %>); +% end +% end +% +% # JIT: Set return values +% unless dispatched +% insn.rets.reverse_each.with_index do |ret, i| +% # TOPN(n) = ... + fprintf(f, " stack[%d] = <%= ret.fetch(:name) %>;\n", b->stack_size + (int)<%= insn.call_attribute('sp_inc') %> - <%= i + 1 %>); +% end +% end +% +% # JIT: We should evaluate ISeq modified for TracePoint if it's enabled. Note: This is slow. +% if trace_enablable_insns.include?(insn.name) + fprintf(f, " if (UNLIKELY(ruby_vm_event_enabled_flags & ISEQ_TRACE_EVENTS)) {\n"); + fprintf(f, " reg_cfp->sp = reg_cfp->bp + %d;\n", b->stack_size + (int)<%= insn.call_attribute('sp_inc') %> + 1); + fprintf(f, " return Qundef; /* cancel JIT */\n"); + fprintf(f, " }\n"); +% end +% +% # compiler: Move JIT compiler's internal stack pointer +% unless dispatched + b->stack_size += <%= insn.call_attribute('sp_inc') %>; +% end + } + fprintf(f, "}\n"); +% +% # compiler: If insn has conditional JUMP, the branch which is not targeted by JUMP should be compiled too. +% if insn.expr.expr =~ /if\s+\([^{}]+\)\s+\{[^{}]+JUMP\([^)]+\);[^{}]+\}/ + compile_insns(f, body, b->stack_size, pos + insn_len(insn), status); +% end +% +% # compiler: If insn returns (leave) or does longjmp (throw), the branch should no longer be compieled. TODO: create attr for it? +% if insn.expr.expr =~ /\sTHROW_EXCEPTION\([^)]+\);/ || insn.expr.expr =~ /\sRESTORE_REGS\(\);/ + b->finish_p = TRUE; +% end |