mirrors/mimalloc
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add branch prediction hint for mi_option_get

Browse Source 
mi_option_get is called frequently in stress tests, and the patch adds
extra hint to the compiler to emit instructions that will cause branch
prediction to favour the "likely" side of a jump instruction.
This commit is contained in:
Jim Huang 2019-07-21 21:42:00 +08:00
parent 60e9d3f69d
commit 1ffa48cc61
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/options.c
View File

@ -51,7 +51,7 @@ static void mi_option_init(mi_option_desc_t* desc);
long mi_option_get(mi_option_t option) {
mi_assert(option >= 0 && option < _mi_option_last);
mi_option_desc_t* desc = &options[option];
if (desc->init == UNINIT) {
if (mi_unlikely(desc->init == UNINIT)) {
mi_option_init(desc);
if (option != mi_option_verbose) {
_mi_verbose_message("option '%s': %ld\n", desc->name, desc->value);