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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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4
src/lj_asm_arm64.h
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@@ -847,9 +847,9 @@ static void asm_href(ASMState *as, IRIns *ir, IROp merge)
emit_dnm(as, A64I_ANDw, dest, dest, tmphash);
emit_lso(as, A64I_LDRw, dest, tab, offsetof(GCtab, hmask));
} else if (irt_isstr(kt)) {
/* Fetch of str->hash is cheaper than ra_allock. */
/* Fetch of str->sid is cheaper than ra_allock. */
emit_dnm(as, A64I_ANDw, dest, dest, tmp);
emit_lso(as, A64I_LDRw, tmp, key, offsetof(GCstr, hash));
emit_lso(as, A64I_LDRw, tmp, key, offsetof(GCstr, sid));
emit_lso(as, A64I_LDRw, dest, tab, offsetof(GCtab, hmask));
} else { /* Must match with hash*() in lj_tab.c. */
emit_dnm(as, A64I_ANDw, dest, dest, tmp);