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transform_mjit_header.rb: inline VM instructions

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* Optcarrot benchmark (--jit)

Before: 62.42 fps
After: 65.31 fps

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62677 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
k0kubun 2018-03-06 12:53:19 +00:00
parent 5053851ef8
commit eeaa053eae
1 changed files with 33 additions and 2 deletions
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35
tool/transform_mjit_header.rb
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@ -20,6 +20,11 @@ module MJITHeader
'__clang__', # clang
]
# These macros are relied on this script's transformation
PREFIXED_MACROS = [
'ALWAYS_INLINE',
]
# For MinGW's ras.h. Those macros have its name in its definition and can't be preprocessed multiple times.
RECURSIVE_MACROS = %w[
RASCTRYINFO
@ -31,6 +36,25 @@ module MJITHeader
'rb_equal_opt', # Not used from VM and not compilable
]
ALWAYS_INLINED_FUNCTIONS = [
'vm_opt_plus',
'vm_opt_minus',
'vm_opt_mult',
'vm_opt_div',
'vm_opt_mod',
'vm_opt_neq',
'vm_opt_lt',
'vm_opt_le',
'vm_opt_gt',
'vm_opt_ge',
'vm_opt_ltlt',
'vm_opt_aref',
'vm_opt_aset',
'vm_opt_aref_with',
'vm_opt_aset_with',
'vm_opt_not',
]
# Return start..stop of last decl in CODE ending STOP
def self.find_decl(code, stop)
level = 0
@ -106,9 +130,11 @@ module MJITHeader
code.sub!(/\A(#define [^\n]+|\n)*(#define MJIT_HEADER 1\n)/, '\2')
end
# This makes easier to process code
# Return [macro, others]. But others include PREFIXED_MACROS to be used in code.
def self.separate_macro_and_code(code)
code.lines.partition { |l| l.start_with?('#') }.map! {|lines| lines.join('')}
code.lines.partition do |l|
l.start_with?('#') && PREFIXED_MACROS.all? { |m| !l.start_with?("#define #{m}") }
end.map! { |lines| lines.join('') }
end
def self.write(code, out)
@ -203,6 +229,11 @@ while (decl_range = MJITHeader.find_decl(code, stop_pos))
if MJITHeader::IGNORED_FUNCTIONS.include?(decl_name) && /#{MJITHeader::FUNC_HEADER_REGEXP}{/.match(decl)
puts "#{PROGRAM}: changing definition of '#{decl_name}' to declaration"
code[decl_range] = decl.sub(/{.+}/m, ';')
elsif MJITHeader::ALWAYS_INLINED_FUNCTIONS.include?(decl_name) && match = /#{MJITHeader::FUNC_HEADER_REGEXP}{/.match(decl)
header = match[0].sub(/{\z/, '').strip
header = "static inline #{header.sub(/\A((static|inline) )+/, '')}"
decl[match.begin(0)...match.end(0)] = '{' # remove header
code[decl_range] = "\nALWAYS_INLINE(#{header});\n#{header} #{decl}"
elsif extern_names.include?(decl_name) && (decl =~ /#{MJITHeader::FUNC_HEADER_REGEXP};/)
decl.sub!(/(extern|static|inline) /, ' ')
unless decl_name =~ /\Aattr_\w+_\w+\z/ # skip too-many false-positive warnings in insns_info.inc.