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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 | 4ebab10bf5ac061bd71df8db2fd7fea61be658c0 (patch) | |
| tree | 2fe415b36c663360e268acde49590f34280e1ecd /insns.def | |
| 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 'insns.def')
| -rw-r--r-- | insns.def | 6 |
1 files changed, 6 insertions, 0 deletions
@@ -1264,6 +1264,9 @@ opt_case_dispatch key = FIXABLE(ival) ? LONG2FIX((long)ival) : rb_dbl2big(ival); } } + case T_TRUE: + case T_FALSE: + case T_NIL: case T_SYMBOL: /* fall through */ case T_FIXNUM: case T_BIGNUM: @@ -1273,6 +1276,9 @@ opt_case_dispatch FIXNUM_REDEFINED_OP_FLAG | FLOAT_REDEFINED_OP_FLAG | BIGNUM_REDEFINED_OP_FLAG | + NIL_REDEFINED_OP_FLAG | + TRUE_REDEFINED_OP_FLAG | + FALSE_REDEFINED_OP_FLAG | STRING_REDEFINED_OP_FLAG)) { st_data_t val; if (st_lookup(RHASH_TBL_RAW(hash), key, &val)) { |