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authork0kubun <k0kubun@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2018-09-12 13:32:11 (GMT)
committerk0kubun <k0kubun@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2018-09-12 13:32:11 (GMT)
commitf7b0a791caaa7c16da4c0afccfde4eaf107e0104 (patch)
tree4b672a1dbe14093144d322dfce0ba0d87b143739 /tool
parentdb4c91be27389a9a97ea2181b8640fa7e080bdec (diff)
_mjit_compile_pc_and_sp.erb: forget about memcpy [ci skip]
because using memcpy here actually made performance worse. In Optcarrot, * for loop fps: 55.90428960597268 fps: 57.21690379342434 fps: 58.41751168279789 fps: 58.7317470613203 fps: 62.81371000202459 fps: 63.02541045417479 fps: 63.77324026366317 fps: 65.48067818347447 fps: 66.02324323831398 fps: 66.3816048847424 fps: 66.54526488660156 * memcpy fps: 54.98389812126847 fps: 57.96524857391357 fps: 57.974918725327946 fps: 58.285987089087364 fps: 58.639003211333225 fps: 59.03244214601948 fps: 59.89964772199603 fps: 60.809490242786175 fps: 62.462070790624146 fps: 62.534599002918306 fps: 63.787312566163756 That's probably because the copied size is very small. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64699 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'tool')
-rw-r--r--tool/ruby_vm/views/_mjit_compile_pc_and_sp.erb2
1 files changed, 1 insertions, 1 deletions
diff --git a/tool/ruby_vm/views/_mjit_compile_pc_and_sp.erb b/tool/ruby_vm/views/_mjit_compile_pc_and_sp.erb
index 08aeaee..eff728f 100644
--- a/tool/ruby_vm/views/_mjit_compile_pc_and_sp.erb
+++ b/tool/ruby_vm/views/_mjit_compile_pc_and_sp.erb
@@ -21,7 +21,7 @@
rb_snum_t i, push_size;
push_size = -<%= insn.call_attribute('sp_inc') %> + <%= insn.rets.size %> - <%= insn.pops.size %>;
fprintf(f, " reg_cfp->sp = (VALUE *)reg_cfp->bp + %ld + 1;\n", push_size); /* POPN(INSN_ATTR(popn)); */
- for (i = 0; i < push_size; i++) { /* TODO: use memcpy? */
+ for (i = 0; i < push_size; i++) {
fprintf(f, " *(reg_cfp->sp + %ld) = stack[%ld];\n", i - push_size, (rb_snum_t)b->stack_size - push_size + i);
}
}