summaryrefslogtreecommitdiff
path: root/iseq.c
diff options
context:
space:
mode:
authornormal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2018-06-06 20:57:48 (GMT)
committernormal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2018-06-06 20:57:48 (GMT)
commit609939f8c6cb595eaa7d36eee030e8c10c6f6ad9 (patch)
treee6847c611729466e42797fb4eff4d175d2b6a901 /iseq.c
parent0dc50688926fbd424cfa75f436fc1d59b479a1e1 (diff)
rb_vm_insn_addr2insn: use st to perform addr2insn mapping
The current VM_INSTRUCTION_SIZE is 198, so the linear search painful during a major GC phase. I noticed rb_vm_insn_addr2insn2 showing up at the top of some profiles while working on some malloc-related stuff, so I decided to attack it. Most notably, the benchmark/bm_vm3_gc.rb improves by over 40%: https://80x24.org/spew/20180602220554.GA9991@whir/raw [ruby-core:87361] [Feature #14814] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63594 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'iseq.c')
-rw-r--r--iseq.c10
1 files changed, 1 insertions, 9 deletions
diff --git a/iseq.c b/iseq.c
index e03f1f2..e5210ca 100644
--- a/iseq.c
+++ b/iseq.c
@@ -118,15 +118,7 @@ rb_iseq_free(const rb_iseq_t *iseq)
static VALUE
rb_vm_insn_addr2insn2(const void *addr)
{
- VALUE insn;
- const void * const *table = rb_vm_get_insns_address_table();
-
- for (insn = 0; insn < VM_INSTRUCTION_SIZE; insn++) {
- if (table[insn] == addr) {
- return insn;
- }
- }
- rb_bug("rb_vm_insn_addr2insn: invalid insn address: %p", addr);
+ return (VALUE)rb_vm_insn_addr2insn(addr);
}
#endif