s/CALL_SIMPLE_METHOD/DISPATCH_ORIGINAL_INSN/

Now that DISPATCH_ORIGINAL_INSN is introduced, we can replace
CALL_SIMPLE_METHOD with DISPATCH_ORIGINAL_INSN. These two macros
differ in size very much and results in this big difference in
compiled binary size. This changeset reduces the size of
vm_exec_core from 32,352 bytes to 27,008 bytes on my machine.  As
a result it yields slightly better performance.
Closes [GH-1779].

-----------------------------------------------------------
benchmark results:
minimum results in each 3 measurements.
Execution time (sec)
name    before  after
so_ackermann     0.484  0.454
so_array         0.837  0.779
so_binary_trees  5.928  5.801
so_concatenate   3.473  3.543
so_count_words   0.201  0.222
so_exception     0.255  0.252
so_fannkuch      1.080  1.019
so_fasta         1.459  1.463
so_k_nucleotide  1.218  1.180
so_lists         0.499  0.484
so_mandelbrot    2.189  2.324
so_matrix        0.510  0.496
so_meteor_contest        3.025  2.925
so_nbody         1.319  1.273
so_nested_loop   0.941  0.932
so_nsieve        1.806  1.647
so_nsieve_bits   2.151  2.078
so_object        0.632  0.621
so_partial_sums  1.560  1.632
so_pidigits      1.190  1.183
so_random        0.333  0.353
so_reverse_complement    0.604  0.586
so_sieve         0.521  0.481
so_spectralnorm  1.774  1.722

Speedup ratio: compare with the result of `before' (greater is better)
name    after
so_ackermann    1.065
so_array        1.075
so_binary_trees 1.022
so_concatenate  0.980
so_count_words  0.903
so_exception    1.009
so_fannkuch     1.059
so_fasta        0.997
so_k_nucleotide 1.032
so_lists        1.032
so_mandelbrot   0.942
so_matrix       1.028
so_meteor_contest       1.034
so_nbody        1.036
so_nested_loop  1.009
so_nsieve       1.097
so_nsieve_bits  1.035
so_object       1.018
so_partial_sums 0.956
so_pidigits     1.006
so_random       0.943
so_reverse_complement   1.032
so_sieve        1.083
so_spectralnorm 1.030

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62088 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 4 deletions

diff --git a/tool/ruby_vm/models/bare_instructions.rb b/tool/ruby_vm/models/bare_instructions.rb
index f2690501fc..2d6db2849e 100644
--- a/tool/ruby_vm/models/bare_instructions.rb
+++ b/tool/ruby_vm/models/bare_instructions.rb
@@ -69,9 +69,11 @@ class RubyVM::BareInstructions
     return @variables                                        \
       . values                                               \
       . group_by {|h| h[:type] }                             \
+      . sort_by  {|t, v| t }                                 \
       . map      {|t, v| [t, v.map {|i| i[:name] }.sort ] }  \
-      . map      {|t, v| sprintf("%s %s", t, v.join(', ')) } \
-      . sort
+      . map      {|t, v|
+        sprintf("MAYBE_UNUSED(%s) %s", t, v.join(', '))
+      }
   end
 
   def preamble
@@ -127,8 +129,7 @@ class RubyVM::BareInstructions
     generate_attribute 'rb_num_t', 'retn', rets.size
     generate_attribute 'rb_num_t', 'width', width
     generate_attribute 'rb_num_t', 'sp_inc', rets.size - pops.size
-    generate_attribute 'bool', 'handles_frame', \
-      opes.any? {|o| /CALL_INFO/ =~ o[:type] }
+    generate_attribute 'bool', 'handles_frame', false
   end
 
   def typesplit a