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authornormal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2015-12-08 01:46:45 (GMT)
committernormal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2015-12-08 01:46:45 (GMT)
commit4ebab10bf5ac061bd71df8db2fd7fea61be658c0 (patch)
tree2fe415b36c663360e268acde49590f34280e1ecd /benchmark
parentc84e62cd32af5a8407f07bdb0fa8a737492acffb (diff)
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.rb19
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 0000000..c62b294
--- /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