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_arm64.dasc
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@@ -993,9 +993,9 @@ static void build_subroutines(BuildCtx *ctx)
| ldr STR:RC, GL->gcroot[GCROOT_MMNAME+MM_metatable]
| cbz TAB:RB, ->fff_restv
| ldr TMP1w, TAB:RB->hmask
| ldr TMP2w, STR:RC->hash
| ldr TMP2w, STR:RC->sid
| ldr NODE:CARG3, TAB:RB->node
| and TMP1w, TMP1w, TMP2w // idx = str->hash & tab->hmask
| and TMP1w, TMP1w, TMP2w // idx = str->sid & tab->hmask
| add TMP1, TMP1, TMP1, lsl #1
| movn CARG4, #~LJ_TSTR
| add NODE:CARG3, NODE:CARG3, TMP1, lsl #3 // node = tab->node + idx*3*8
@@ -2943,9 +2943,9 @@ static void build_ins(BuildCtx *ctx, BCOp op, int defop)
|->BC_TGETS_Z:
| // TAB:CARG2 = GCtab *, STR:RC = GCstr *, RA = dst
| ldr TMP1w, TAB:CARG2->hmask
| ldr TMP2w, STR:RC->hash
| ldr TMP2w, STR:RC->sid
| ldr NODE:CARG3, TAB:CARG2->node
| and TMP1w, TMP1w, TMP2w // idx = str->hash & tab->hmask
| and TMP1w, TMP1w, TMP2w // idx = str->sid & tab->hmask
| add TMP1, TMP1, TMP1, lsl #1
| movn CARG4, #~LJ_TSTR
| add NODE:CARG3, NODE:CARG3, TMP1, lsl #3 // node = tab->node + idx*3*8
@@ -3069,9 +3069,9 @@ static void build_ins(BuildCtx *ctx, BCOp op, int defop)
|->BC_TSETS_Z:
| // TAB:CARG2 = GCtab *, STR:RC = GCstr *, RA = src
| ldr TMP1w, TAB:CARG2->hmask
| ldr TMP2w, STR:RC->hash
| ldr TMP2w, STR:RC->sid
| ldr NODE:CARG3, TAB:CARG2->node
| and TMP1w, TMP1w, TMP2w // idx = str->hash & tab->hmask
| and TMP1w, TMP1w, TMP2w // idx = str->sid & tab->hmask
| add TMP1, TMP1, TMP1, lsl #1
| movn CARG4, #~LJ_TSTR
| add NODE:CARG3, NODE:CARG3, TMP1, lsl #3 // node = tab->node + idx*3*8