diff options
| author | k0kubun <k0kubun@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-09-11 12:53:52 +0000 |
|---|---|---|
| committer | k0kubun <k0kubun@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-09-11 12:53:52 +0000 |
| commit | 67bd8fb36b56858cb35aa05c5279b6f281954935 (patch) | |
| tree | e9b5b76ea81ee725fbc49a727f9026b9f69743ce /tool/ruby_vm/views | |
| parent | 24e30ef76e33449f72be8387cbcac5f5d21e668d (diff) | |
_mjit_compile_pc_and_sp.erb: skip moving pc
when catch_except_p is false and insn.always_leaf? is true (never makes
arbitrary method call in the insn).
On Optcarrot, unfortunately this didn't have measureable performance impact.
But still this is a good direction since it becomes much faster when
marking all insns as always leaf.
bare_instructions.rb: add `#always_leaf?` that indicates the insn can
always be considered as leaf. Using dynamic leaf for JIT would be hard
since it requires to discard outdated code somehow.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64683 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'tool/ruby_vm/views')
| -rw-r--r-- | tool/ruby_vm/views/_mjit_compile_pc_and_sp.erb | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/tool/ruby_vm/views/_mjit_compile_pc_and_sp.erb b/tool/ruby_vm/views/_mjit_compile_pc_and_sp.erb index 5143f7bcb4..f33e60cf19 100644 --- a/tool/ruby_vm/views/_mjit_compile_pc_and_sp.erb +++ b/tool/ruby_vm/views/_mjit_compile_pc_and_sp.erb @@ -5,8 +5,10 @@ % # conditions mentioned in the file COPYING are met. Consult the file for % # details. % -% # JIT: Move pc so that catch table lookup condition is met, and for #caller_locations and rb_profile_frames. - fprintf(f, " reg_cfp->pc = original_body_iseq + %d;\n", next_pos); /* ADD_PC(INSN_ATTR(width)); */ +% # JIT: Move pc for catch table on catch_except_p, and for #caller_locations and rb_profile_frames on !insn.always_leaf? + if (body->catch_except_p || <%= insn.always_leaf? ? 'FALSE' : 'TRUE' %>) { + fprintf(f, " reg_cfp->pc = original_body_iseq + %d;\n", next_pos); /* ADD_PC(INSN_ATTR(width)); */ + } % % # JIT: move sp to use or preserve stack variables if (status->local_stack_p) { |