DrSocalkwe3n/luajit
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Redesign and harden string interning.

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Up to 40% faster on hash-intensive benchmarks.
With some ideas from Sokolov Yura.
This commit is contained in:
Mike Pall
2020-06-23 03:06:45 +02:00
parent a44f53acf5
commit ff34b48ddd
22 changed files with 394 additions and 202 deletions
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12
src/vm_mips.dasc
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@@ -1152,9 +1152,9 @@ static void build_subroutines(BuildCtx *ctx)
|. li SFARG1HI, LJ_TNIL
| lw TMP0, TAB:SFARG1LO->hmask
| li SFARG1HI, LJ_TTAB // Use metatable as default result.
| lw TMP1, STR:RC->hash
| lw TMP1, STR:RC->sid
| lw NODE:TMP2, TAB:SFARG1LO->node
| and TMP1, TMP1, TMP0 // idx = str->hash & tab->hmask
| and TMP1, TMP1, TMP0 // idx = str->sid & tab->hmask
| sll TMP0, TMP1, 5
| sll TMP1, TMP1, 3
| subu TMP1, TMP0, TMP1
@@ -4029,9 +4029,9 @@ static void build_ins(BuildCtx *ctx, BCOp op, int defop)
|->BC_TGETS_Z:
| // TAB:RB = GCtab *, STR:RC = GCstr *, RA = dst*8
| lw TMP0, TAB:RB->hmask
| lw TMP1, STR:RC->hash
| lw TMP1, STR:RC->sid
| lw NODE:TMP2, TAB:RB->node
| and TMP1, TMP1, TMP0 // idx = str->hash & tab->hmask
| and TMP1, TMP1, TMP0 // idx = str->sid & tab->hmask
| sll TMP0, TMP1, 5
| sll TMP1, TMP1, 3
| subu TMP1, TMP0, TMP1
@@ -4203,10 +4203,10 @@ static void build_ins(BuildCtx *ctx, BCOp op, int defop)
|->BC_TSETS_Z:
| // TAB:RB = GCtab *, STR:RC = GCstr *, RA = BASE+src*8
| lw TMP0, TAB:RB->hmask
| lw TMP1, STR:RC->hash
| lw TMP1, STR:RC->sid
| lw NODE:TMP2, TAB:RB->node
| sb r0, TAB:RB->nomm // Clear metamethod cache.
| and TMP1, TMP1, TMP0 // idx = str->hash & tab->hmask
| and TMP1, TMP1, TMP0 // idx = str->sid & tab->hmask
| sll TMP0, TMP1, 5
| sll TMP1, TMP1, 3
| subu TMP1, TMP0, TMP1