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| author | normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2015-12-08 01:46:45 +0000 |
|---|---|---|
| committer | normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2015-12-08 01:46:45 +0000 |
| commit | 219bb1d433bddff15ac26b002bc8eac168c8588c (patch) | |
| tree | 2fe415b36c663360e268acde49590f34280e1ecd /benchmark | |
| parent | d2f86c9a45e062552dbdee311d9ec633e3a4791f (diff) | |
| download | ruby-219bb1d433bddff15ac26b002bc8eac168c8588c.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 'benchmark')
| -rw-r--r-- | benchmark/bm_vm2_case_lit.rb | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/benchmark/bm_vm2_case_lit.rb b/benchmark/bm_vm2_case_lit.rb new file mode 100644 index 0000000000..c62b294e0e --- /dev/null +++ b/benchmark/bm_vm2_case_lit.rb @@ -0,0 +1,19 @@ +i = 0 +@ret = [ "foo", true, false, :sym, 6, nil, 0.1, 0xffffffffffffffff ] +def foo(i) + @ret[i % @ret.size] +end + +while i<6_000_000 # while loop 2 + case foo(i) + when "foo" then :foo + when true then true + when false then false + when :sym then :sym + when 6 then :fix + when nil then nil + when 0.1 then :float + when 0xffffffffffffffff then :big + end + i += 1 +end |