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| author | Takashi Kokubun <takashikkbn@gmail.com> | 2020-05-17 21:55:41 -0700 |
|---|---|---|
| committer | Takashi Kokubun <takashikkbn@gmail.com> | 2020-05-17 22:21:31 -0700 |
| commit | 0e5a58b6bf6aae72b6290a8d68e0a1b6d9eb4f79 (patch) | |
| tree | b301289b562b6a5856e6940136b47c610feb41a2 /tool/transform_mjit_header.rb | |
| parent | c0cd474d4ffedb1eeb49505f53c0727a008bdd3e (diff) | |
Mark some JIT-ed functions as COLDFUNC
Put some functions which are unlikely to be called on JIT in
.text.unlikely section to improve hot code's locality.
Diffstat (limited to 'tool/transform_mjit_header.rb')
| -rw-r--r-- | tool/transform_mjit_header.rb | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/tool/transform_mjit_header.rb b/tool/transform_mjit_header.rb index 3e6aa6e0d0..4a7e59d526 100644 --- a/tool/transform_mjit_header.rb +++ b/tool/transform_mjit_header.rb @@ -27,7 +27,9 @@ module MJITHeader # These macros are relied on this script's transformation PREFIXED_MACROS = [ 'ALWAYS_INLINE', + 'COLDFUNC', 'inline', + 'RBIMPL_ATTR_COLD', ] # For MinGW's ras.h. Those macros have its name in its definition and can't be preprocessed multiple times. @@ -62,6 +64,15 @@ module MJITHeader 'vm_opt_not', ] + COLD_FUNCTIONS = %w[ + setup_parameters_complex + vm_call_iseq_setup + vm_call_iseq_setup_2 + vm_call_iseq_setup_tailcall + vm_call_method_each_type + vm_ic_update + ] + # Return start..stop of last decl in CODE ending STOP def self.find_decl(code, stop) level = 0 @@ -254,6 +265,11 @@ while (decl_range = MJITHeader.find_decl(code, stop_pos)) if MJITHeader::IGNORED_FUNCTIONS.include?(decl_name) && /#{MJITHeader::FUNC_HEADER_REGEXP}{/.match(decl) transform_logs[:def_to_decl] << decl_name code[decl_range] = decl.sub(/{.+}/m, ';') + elsif MJITHeader::COLD_FUNCTIONS.include?(decl_name) && match = /#{MJITHeader::FUNC_HEADER_REGEXP}{/.match(decl) + header = match[0].sub(/{\z/, '').strip + header = "static #{header.sub(/\A((static|inline) )+/, '')}" + decl[match.begin(0)...match.end(0)] = '{' # remove header + code[decl_range] = "\nCOLDFUNC #{header} #{decl}" 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) )+/, '')}" |