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vm_insnhelper.c: optimize for loop

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* vm_insnhelper.c (vm_call_iseq_setup_normal): simple for loop
  condition optimization. this area shows up as a hotspot in VM
  profiles.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44285 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
tmm1 2013-12-19 02:27:36 +00:00
parent 9797647e25
commit 4cd675ea9e
2 changed files with 9 additions and 3 deletions

6
ChangeLog
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@ -1,3 +1,9 @@
Thu Dec 19 11:23:49 2013 Aman Gupta <ruby@tmm1.net>
* vm_insnhelper.c (vm_call_iseq_setup_normal): simple for loop
condition optimization. this area shows up as a hotspot in VM
profiles.
Thu Dec 19 10:50:13 2013 Koichi Sasada <ko1@atdot.net> Thu Dec 19 10:50:13 2013 Koichi Sasada <ko1@atdot.net>
* gc.c (newobj_of): don't need to RBASIC_SET_CLASS() which includes WB * gc.c (newobj_of): don't need to RBASIC_SET_CLASS() which includes WB

6
vm_insnhelper.c
View file

@ -1228,13 +1228,13 @@ vm_call_iseq_setup_2(rb_thread_t *th, rb_control_frame_t *cfp, rb_call_info_t *c
static inline VALUE static inline VALUE
vm_call_iseq_setup_normal(rb_thread_t *th, rb_control_frame_t *cfp, rb_call_info_t *ci) vm_call_iseq_setup_normal(rb_thread_t *th, rb_control_frame_t *cfp, rb_call_info_t *ci)
{ {
int i; int i, local_size;
VALUE *argv = cfp->sp - ci->argc; VALUE *argv = cfp->sp - ci->argc;
rb_iseq_t *iseq = ci->me->def->body.iseq; rb_iseq_t *iseq = ci->me->def->body.iseq;
VALUE *sp = argv + iseq->arg_size; VALUE *sp = argv + iseq->arg_size;
/* clear local variables */ /* clear local variables (arg_size...local_size) */
for (i = 0; i < iseq->local_size - iseq->arg_size; i++) { for (i = iseq->arg_size, local_size = iseq->local_size; i < local_size; i++) {
*sp++ = Qnil; *sp++ = Qnil;
} }