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78352fb52e
because opt_nil/opt_not/opt_eq populates cc even when it doesn't
fallback to opt_send_without_block because of vm_method_cfunc_is.
```
$ benchmark-driver -v --rbenv 'before --jit;after --jit' benchmark/mjit_opt_cc_insns.yml --repeat-count=4
before --jit: ruby 2.8.0dev (2020-06-22T08:11:24Z master d231b8f95b) +JIT [x86_64-linux]
after --jit: ruby 2.8.0dev (2020-06-22T08:53:27Z master e1125879ed) +JIT [x86_64-linux]
last_commit=Compile opt_send for opt_* only when cc has ISeq
Calculating -------------------------------------
before --jit after --jit
mjit_nil?(1) 54.106M 73.693M i/s - 40.000M times in 0.739288s 0.542795s
mjit_not(1) 53.398M 74.477M i/s - 40.000M times in 0.749090s 0.537075s
mjit_eq(1, nil) 7.427M 6.497M i/s - 8.000M times in 1.077136s 1.231326s
Comparison:
mjit_nil?(1)
after --jit: 73692594.3 i/s
before --jit: 54106108.4 i/s - 1.36x slower
mjit_not(1)
after --jit: 74477487.9 i/s
before --jit: 53398125.0 i/s - 1.39x slower
mjit_eq(1, nil)
before --jit: 7427105.9 i/s
after --jit: 6497063.0 i/s - 1.14x slower
```
Actually opt_eq becomes slower by this. Maybe it's indeed using
opt_send_without_block, but I'll approach that one in another commit.
112 lines
6.5 KiB
Text
112 lines
6.5 KiB
Text
% # -*- C -*-
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% # Copyright (c) 2018 Takashi Kokubun. All rights reserved.
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% #
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% # This file is a part of the programming language Ruby. Permission is hereby
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% # granted, to either redistribute and/or modify this file, provided that the
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% # conditions mentioned in the file COPYING are met. Consult the file for
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% # details.
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%
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% # Optimized case of send / opt_send_without_block instructions.
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{
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% # compiler: Prepare operands which may be used by `insn.call_attribute`
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% insn.opes.each_with_index do |ope, i|
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MAYBE_UNUSED(<%= ope.fetch(:decl) %>) = (<%= ope.fetch(:type) %>)operands[<%= i %>];
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% end
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% # compiler: Use captured cc to avoid race condition
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const struct rb_callcache *captured_cc = captured_cc_entries(status)[call_data_index(cd, body)];
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%
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% # compiler: Inline send insn where some supported fastpath is used.
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const rb_iseq_t *iseq = NULL;
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const CALL_INFO ci = cd->ci;
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int kw_splat = IS_ARGS_KW_SPLAT(ci) > 0;
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extern bool rb_splat_or_kwargs_p(const struct rb_callinfo *restrict ci);
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if (!status->compile_info->disable_send_cache && (
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% # `CC_SET_FASTPATH(cd->cc, vm_call_cfunc_with_frame, ...)` in `vm_call_cfunc`
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(has_valid_method_type(captured_cc, VM_METHOD_TYPE_CFUNC)
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&& !rb_splat_or_kwargs_p(ci) && !kw_splat)
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% # `CC_SET_FASTPATH(cc, vm_call_iseq_setup_func(...), vm_call_iseq_optimizable_p(...))` in `vm_callee_setup_arg`,
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% # and support only non-VM_CALL_TAILCALL path inside it
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|| (has_valid_method_type(captured_cc, VM_METHOD_TYPE_ISEQ)
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&& fastpath_applied_iseq_p(ci, captured_cc, iseq = def_iseq_ptr(vm_cc_cme(captured_cc)->def))
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&& !(vm_ci_flag(ci) & VM_CALL_TAILCALL))
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)) {
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int sp_inc = (int)sp_inc_of_sendish(ci);
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fprintf(f, "{\n");
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% # JIT: Invalidate call cache if it requires vm_search_method. This allows to inline some of following things.
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bool opt_class_of = !maybe_special_const_class_p(captured_cc->klass); // If true, use RBASIC_CLASS instead of CLASS_OF to reduce code size
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fprintf(f, " const struct rb_callcache *cc = (const struct rb_callcache *)0x%"PRIxVALUE";\n", (VALUE)captured_cc);
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fprintf(f, " const rb_callable_method_entry_t *cc_cme = (const rb_callable_method_entry_t *)0x%"PRIxVALUE";\n", (VALUE)vm_cc_cme(captured_cc));
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fprintf(f, " const VALUE recv = stack[%d];\n", b->stack_size + sp_inc - 1);
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fprintf(f, " if (UNLIKELY(%s || !vm_cc_valid_p(cc, cc_cme, %s(recv)))) {\n", opt_class_of ? "RB_SPECIAL_CONST_P(recv)" : "false", opt_class_of ? "RBASIC_CLASS" : "CLASS_OF");
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fprintf(f, " reg_cfp->pc = original_body_iseq + %d;\n", pos);
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fprintf(f, " reg_cfp->sp = vm_base_ptr(reg_cfp) + %d;\n", b->stack_size);
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fprintf(f, " goto send_cancel;\n");
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fprintf(f, " }\n");
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% # JIT: move sp and pc if necessary
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<%= render 'mjit_compile_pc_and_sp', locals: { insn: insn } -%>
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% # JIT: If ISeq is inlinable, call the inlined method without pushing a frame.
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if (iseq && status->inlined_iseqs != NULL && iseq->body == status->inlined_iseqs[pos]) {
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fprintf(f, " {\n");
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fprintf(f, " VALUE orig_self = reg_cfp->self;\n");
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fprintf(f, " reg_cfp->self = stack[%d];\n", b->stack_size + sp_inc - 1);
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fprintf(f, " stack[%d] = _mjit%d_inlined_%d(ec, reg_cfp, orig_self, original_iseq);\n", b->stack_size + sp_inc - 1, status->compiled_id, pos);
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fprintf(f, " reg_cfp->self = orig_self;\n");
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fprintf(f, " }\n");
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}
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else {
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% # JIT: Forked `vm_sendish` (except method_explorer = vm_search_method_wrap) to inline various things
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fprintf(f, " {\n");
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fprintf(f, " VALUE val;\n");
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fprintf(f, " struct rb_calling_info calling;\n");
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% if insn.name == 'send'
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fprintf(f, " calling.block_handler = vm_caller_setup_arg_block(ec, reg_cfp, (const struct rb_callinfo *)0x%"PRIxVALUE", (rb_iseq_t *)0x%"PRIxVALUE", FALSE);\n", (VALUE)ci, (VALUE)blockiseq);
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% else
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fprintf(f, " calling.block_handler = VM_BLOCK_HANDLER_NONE;\n");
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% end
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fprintf(f, " calling.kw_splat = %d;\n", kw_splat);
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fprintf(f, " calling.recv = stack[%d];\n", b->stack_size + sp_inc - 1);
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fprintf(f, " calling.argc = %d;\n", vm_ci_argc(ci));
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if (vm_cc_cme(captured_cc)->def->type == VM_METHOD_TYPE_CFUNC) {
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% # TODO: optimize this more
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fprintf(f, " CALL_DATA cd = (CALL_DATA)0x%"PRIxVALUE";\n", operands[0]);
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fprintf(f, " val = vm_call_cfunc_with_frame(ec, reg_cfp, &calling, cd);\n");
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}
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else { // VM_METHOD_TYPE_ISEQ
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% # fastpath_applied_iseq_p checks rb_simple_iseq_p, which ensures has_opt == FALSE
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fprintf(f, " vm_call_iseq_setup_normal(ec, reg_cfp, &calling, cc_cme, 0, %d, %d);\n", iseq->body->param.size, iseq->body->local_table_size);
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if (iseq->body->catch_except_p) {
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fprintf(f, " VM_ENV_FLAGS_SET(ec->cfp->ep, VM_FRAME_FLAG_FINISH);\n");
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fprintf(f, " val = vm_exec(ec, TRUE);\n");
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}
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else {
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fprintf(f, " if ((val = mjit_exec(ec)) == Qundef) {\n");
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fprintf(f, " VM_ENV_FLAGS_SET(ec->cfp->ep, VM_FRAME_FLAG_FINISH);\n"); // This is vm_call0_body's code after vm_call_iseq_setup
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fprintf(f, " val = vm_exec(ec, FALSE);\n");
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fprintf(f, " }\n");
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}
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}
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fprintf(f, " stack[%d] = val;\n", b->stack_size + sp_inc - 1);
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fprintf(f, " }\n");
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% # JIT: We should evaluate ISeq modified for TracePoint if it's enabled. Note: This is slow.
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fprintf(f, " if (UNLIKELY(!mjit_call_p)) {\n");
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fprintf(f, " reg_cfp->sp = vm_base_ptr(reg_cfp) + %d;\n", b->stack_size + (int)<%= insn.call_attribute('sp_inc') %>);
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if (!pc_moved_p) {
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fprintf(f, " reg_cfp->pc = original_body_iseq + %d;\n", next_pos);
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}
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fprintf(f, " RB_DEBUG_COUNTER_INC(mjit_cancel_invalidate_all);\n");
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fprintf(f, " goto cancel;\n");
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fprintf(f, " }\n");
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}
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% # compiler: Move JIT compiler's internal stack pointer
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b->stack_size += <%= insn.call_attribute('sp_inc') %>;
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fprintf(f, "}\n");
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break;
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}
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}
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