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author | normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2015-12-08 01:46:45 +0000 |
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committer | normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2015-12-08 01:46:45 +0000 |
commit | 4ebab10bf5ac061bd71df8db2fd7fea61be658c0 (patch) | |
tree | 2fe415b36c663360e268acde49590f34280e1ecd /ChangeLog | |
parent | c84e62cd32af5a8407f07bdb0fa8a737492acffb (diff) | |
download | ruby-4ebab10bf5ac061bd71df8db2fd7fea61be658c0.tar.gz |
compile optimized case dispatch for nil/true/false
nil/true/false are special literals just like floats, integers,
literal strings, and symbols. Optimize when statements with
them by using a jump table, too.
target 0: a (ruby 2.3.0dev (2015-12-08 trunk 52928) [x86_64-linux]) at "/home/ew/rrrr/b/ruby"
target 1: b (ruby 2.3.0dev (2015-12-08 master 52928) [x86_64-linux]) at "/home/ew/ruby/b/ruby"
benchmark results:
minimum results in each 5 measurements.
Execution time (sec)
name a b
loop_whileloop2 0.102 0.103
vm2_case_lit* 1.657 0.549
Speedup ratio: compare with the result of `a' (greater is better)
name b
loop_whileloop2 0.988
vm2_case_lit* 3.017
* benchmark/bm_vm2_case_lit.rb: new benchmark
* compile.c (case_when_optimizable_literal): add nil/true/false
* insns.def (opt_case_dispatch): ditto
* vm.c (vm_redefinition_check_flag): ditto
* vm.c (vm_init_redefined_flag): ditto
* vm_core.h: ditto
* object.c (InitVM_Object): define === explicitly for nil/true/false
* test/ruby/test_case.rb (test_deoptimize_nil): new test
* test/ruby/test_optimization.rb (test_opt_case_dispatch): update
(test_eqq): new test
[ruby-core:71923] [Feature #11769]
Original patch by Aaron Patterson <tenderlove@ruby-lang.org>
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52931 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'ChangeLog')
-rw-r--r-- | ChangeLog | 15 |
1 files changed, 15 insertions, 0 deletions
@@ -1,3 +1,18 @@ +Tue Dec 8 10:40:21 2015 Eric Wong <e@80x24.org> + + * benchmark/bm_vm2_case_lit.rb: new benchmark + * compile.c (case_when_optimizable_literal): add nil/true/false + * insns.def (opt_case_dispatch): ditto + * vm.c (vm_redefinition_check_flag): ditto + * vm.c (vm_init_redefined_flag): ditto + * vm_core.h: ditto + * object.c (InitVM_Object): define === explicitly for nil/true/false + * test/ruby/test_case.rb (test_deoptimize_nil): new test + * test/ruby/test_optimization.rb (test_opt_case_dispatch): update + (test_eqq): new test + [ruby-core:71923] [Feature #11769] + Original patch by Aaron Patterson <tenderlove@ruby-lang.org> + Tue Dec 8 10:19:02 2015 Jake Worth <jakeworth82@gmail.com> * lib/optparse.rb: fix double word typo in the document. |