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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4
src/lj_asm_arm.h
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@@ -825,10 +825,10 @@ static void asm_href(ASMState *as, IRIns *ir, IROp merge)
} else {
emit_dnm(as, ARMI_ADD|ARMF_SH(ARMSH_LSL, 3), dest, dest, tmp);
emit_dnm(as, ARMI_ADD|ARMF_SH(ARMSH_LSL, 1), tmp, tmp, tmp);
if (irt_isstr(kt)) { /* Fetch of str->hash is cheaper than ra_allock. */
if (irt_isstr(kt)) { /* Fetch of str->sid is cheaper than ra_allock. */
emit_dnm(as, ARMI_AND, tmp, tmp+1, RID_TMP);
emit_lso(as, ARMI_LDR, dest, tab, (int32_t)offsetof(GCtab, node));
emit_lso(as, ARMI_LDR, tmp+1, key, (int32_t)offsetof(GCstr, hash));
emit_lso(as, ARMI_LDR, tmp+1, key, (int32_t)offsetof(GCstr, sid));
emit_lso(as, ARMI_LDR, RID_TMP, tab, (int32_t)offsetof(GCtab, hmask));
} else if (irref_isk(refkey)) {
emit_opk(as, ARMI_AND, tmp, RID_TMP, (int32_t)khash,