Alan Wu 89e7997622 Combine call info and cache to speed up method invocation ... To perform a regular method call, the VM needs two structs, `rb_call_info` and `rb_call_cache`. At the moment, we allocate these two structures in separate buffers. In the worst case, the CPU needs to read 4 cache lines to complete a method call. Putting the two structures together reduces the maximum number of cache line reads to 2. Combining the structures also saves 8 bytes per call site as the current layout uses separate two pointers for the call info and the call cache. This saves about 2 MiB on Discourse. This change improves the Optcarrot benchmark at least 3%. For more details, see attached bugs.ruby-lang.org ticket. Complications: - A new instruction attribute `comptime_sp_inc` is introduced to calculate SP increase at compile time without using call caches. At compile time, a `TS_CALLDATA` operand points to a call info struct, but at runtime, the same operand points to a call data struct. Instruction that explicitly define `sp_inc` also need to define `comptime_sp_inc`. - MJIT code for copying call cache becomes slightly more complicated. - This changes the bytecode format, which might break existing tools. [Misc #16258]		2019-10-24 18:03:42 +09:00
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_attributes.erb	delete emacs mode lines [ci skip]	2018-12-27 06:12:09 +00:00
_c_expr.erb	delete emacs mode lines [ci skip]	2018-12-27 06:12:09 +00:00
_comptime_insn_stack_increase.erb	Combine call info and cache to speed up method invocation	2019-10-24 18:03:42 +09:00
_copyright.erb	[ci skip] grammers in comments	2019-04-23 10:27:44 +09:00
_insn_entry.erb	vm.inc now in C99	2019-01-25 14:09:10 +00:00
_insn_len_info.erb	_insn_len_info.erb: add ASSERT_VM_INSTRUCTION_SIZE	2019-01-31 05:00:41 +00:00
_insn_name_info.erb	_insn_name_info.erb: use C99	2019-01-31 04:46:03 +00:00
_insn_operand_info.erb	_insn_operand_info.erb: use C99	2019-01-31 05:22:58 +00:00
_insn_sp_pc_dependency.erb	Introduce frame-omitted method inlining	2019-04-16 17:02:16 +00:00
_insn_type_chars.erb	_insn_type_chars.erb: use C99	2019-01-31 05:36:17 +00:00
_leaf_helpers.erb	_leaf_helpers.erb: some functions are not leaf	2019-02-01 04:39:47 +00:00
_mjit_compile_insn.erb	Combine call info and cache to speed up method invocation	2019-10-24 18:03:42 +09:00
_mjit_compile_insn_body.erb	MJIT Support for getblockparamproxy	2019-07-14 18:04:19 +09:00
_mjit_compile_ivar.erb	Check frozen flag on MJIT setinstancevariable	2019-09-04 11:10:21 +09:00
_mjit_compile_pc_and_sp.erb	Prefer using vm_base_ptr rather than cfp->bp	2019-03-25 14:26:11 +00:00
_mjit_compile_send.erb	Combine call info and cache to speed up method invocation	2019-10-24 18:03:42 +09:00
_notice.erb	delete emacs mode lines [ci skip]	2018-12-27 06:12:09 +00:00
_sp_inc_helpers.erb	Arrange as same as comment and return statement	2018-12-27 09:09:42 +00:00
_trace_instruction.erb	delete emacs mode lines [ci skip]	2018-12-27 06:12:09 +00:00
insns.inc.erb	delete emacs mode lines [ci skip]	2018-12-27 06:12:09 +00:00
insns_info.inc.erb	Combine call info and cache to speed up method invocation	2019-10-24 18:03:42 +09:00
mjit_compile.inc.erb	Combine call info and cache to speed up method invocation	2019-10-24 18:03:42 +09:00
opt_sc.inc.erb	delete emacs mode lines [ci skip]	2018-12-27 06:12:09 +00:00
optinsn.inc.erb	delete emacs mode lines [ci skip]	2018-12-27 06:12:09 +00:00
optunifs.inc.erb	delete emacs mode lines [ci skip]	2018-12-27 06:12:09 +00:00
vm.inc.erb	delete emacs mode lines [ci skip]	2018-12-27 06:12:09 +00:00
vmtc.inc.erb	delete emacs mode lines [ci skip]	2018-12-27 06:12:09 +00:00