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compile.c: fix performance of strconcat

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* compile.c (compile_dstr_fragments): fix performance by omitting
  the first empty string only for keeping literal encoding if
  other literals are too.  [ruby-core:70930] [Bug #11556]
* string.c (rb_str_append_literal): append but keep encoding non
  US-ASCII.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51970 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2015-09-29 07:37:40 +00:00
parent 06b3702753
commit ed8b452e37
5 changed files with 37 additions and 1 deletions
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9
ChangeLog
View file

@ -1,3 +1,12 @@
Tue Sep 29 16:37:29 2015 Nobuyoshi Nakada <nobu@ruby-lang.org>
* compile.c (compile_dstr_fragments): fix performance by omitting
the first empty string only for keeping literal encoding if
other literals are too. [ruby-core:70930] [Bug #11556]
* string.c (rb_str_append_literal): append but keep encoding non
US-ASCII.
Mon Sep 28 17:40:17 2015 Shugo Maeda <shugo@ruby-lang.org>
* lib/net/ftp.rb (mtime): use usec instead of fractions to parse

13
compile.c
View file

@ -787,6 +787,12 @@ FIRST_ELEMENT(LINK_ANCHOR *anchor)
return anchor->anchor.next;
}
static LINK_ELEMENT *
LAST_ELEMENT(LINK_ANCHOR *anchor)
{
return anchor->last;
}
static LINK_ELEMENT *
POP_ELEMENT(ISEQ_ARG_DECLARE LINK_ANCHOR *anchor)
{
@ -2329,6 +2335,7 @@ compile_dstr_fragments(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE *node, int *cntp)
{
NODE *list = node->nd_next;
VALUE lit = node->nd_lit;
LINK_ELEMENT *first_lit = 0;
int cnt = 0;
debugp_param("nd_lit", lit);
@ -2337,6 +2344,7 @@ compile_dstr_fragments(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE *node, int *cntp)
if (RB_TYPE_P(lit, T_STRING))
lit = node->nd_lit = rb_fstring(node->nd_lit);
ADD_INSN1(ret, nd_line(node), putobject, lit);
if (RSTRING_LEN(lit) == 0) first_lit = LAST_ELEMENT(ret);
}
while (list) {
@ -2344,6 +2352,7 @@ compile_dstr_fragments(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE *node, int *cntp)
if (nd_type(node) == NODE_STR) {
node->nd_lit = rb_fstring(node->nd_lit);
ADD_INSN1(ret, nd_line(node), putobject, node->nd_lit);
lit = Qnil;
}
else {
COMPILE(ret, "each string", node);
@ -2351,6 +2360,10 @@ compile_dstr_fragments(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE *node, int *cntp)
cnt++;
list = list->nd_next;
}
if (NIL_P(lit) && first_lit) {
REMOVE_ELEM(first_lit);
--cnt;
}
*cntp = cnt;
return COMPILE_OK;

2
insns.def
View file

@ -370,7 +370,7 @@ concatstrings
val = rb_str_resurrect(TOPN(i));
while (i-- > 0) {
const VALUE v = TOPN(i);
rb_str_append(val, v);
rb_str_append_literal(val, v);
}
POPN(num);
}

12
string.c
View file

@ -2460,6 +2460,18 @@ rb_str_append(VALUE str, VALUE str2)
return rb_str_buf_append(str, str2);
}
VALUE
rb_str_append_literal(VALUE str, VALUE str2)
{
int encidx = rb_enc_get_index(str2);
rb_str_buf_append(str, str2);
if (encidx != ENCINDEX_US_ASCII) {
if (rb_enc_get_index(str) == ENCINDEX_US_ASCII)
rb_enc_associate_index(str, encidx);
}
return str;
}
/*
* call-seq:
* str << integer -> str

2
vm.c
View file

@ -21,6 +21,8 @@
#include "probes.h"
#include "probes_helper.h"
VALUE rb_str_append_literal(VALUE str, VALUE str2);
static inline VALUE *
VM_EP_LEP(VALUE *ep)
{