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vm: add OP_SEND0 and OP_SSEND0 for zero-argument method calls

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These opcodes use BB format instead of BBB, saving 1 byte per call.
In the standard library, this saves ~790 bytes (568 SEND0 + 222 SSEND0).

Co-authored-by: Claude <noreply@anthropic.com>
This commit is contained in:
Yukihiro "Matz" Matsumoto
2026-01-25 07:42:40 +09:00
parent f7988c9339
commit 9123ef46eb
4 changed files with 30 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/codedump.c
+6
View File
@@ -336,6 +336,9 @@ codedump(mrb_state *mrb, const mrb_irep *irep, FILE *out)
fprintf(out, "SSEND\t\tR%d\t:%s\t", a, mrb_sym_dump(mrb, irep->syms[b]));
print_args(c, out);
break;
CASE(OP_SSEND0, BB):
fprintf(out, "SSEND0\tR%d\t:%s\n", a, mrb_sym_dump(mrb, irep->syms[b]));
break;
CASE(OP_SSENDB, BBB):
fprintf(out, "SSENDB\tR%d\t:%s\t", a, mrb_sym_dump(mrb, irep->syms[b]));
print_args(c, out);
@@ -344,6 +347,9 @@ codedump(mrb_state *mrb, const mrb_irep *irep, FILE *out)
fprintf(out, "SEND\t\tR%d\t:%s\t", a, mrb_sym_dump(mrb, irep->syms[b]));
print_args(c, out);
break;
CASE(OP_SEND0, BB):
fprintf(out, "SEND0\t\tR%d\t:%s\n", a, mrb_sym_dump(mrb, irep->syms[b]));
break;
CASE(OP_SENDB, BBB):
fprintf(out, "SENDB\t\tR%d\t:%s\t", a, mrb_sym_dump(mrb, irep->syms[b]));
print_args(c, out);
src/vm.c
+13 -2
View File
@@ -2211,6 +2211,12 @@ RETRY_TRY_BLOCK:
}
goto L_SENDB;
CASE(OP_SSEND0, BB) {
regs[a] = regs[0];
c = 0;
}
goto L_SENDB;
CASE(OP_SSENDB, BBB) {
regs[a] = regs[0];
}
@@ -2219,6 +2225,11 @@ RETRY_TRY_BLOCK:
CASE(OP_SEND, BBB)
goto L_SENDB;
CASE(OP_SEND0, BB) {
c = 0;
}
goto L_SENDB;
L_SEND_SYM:
c = 1;
/* push nil after arguments */
@@ -2259,7 +2270,7 @@ RETRY_TRY_BLOCK:
}
mrb_assert(bidx < irep->nregs);
if (insn == OP_SEND || insn == OP_SSEND) {
if (insn == OP_SEND || insn == OP_SEND0 || insn == OP_SSEND || insn == OP_SSEND0) {
/* clear block argument */
SET_NIL_VALUE(regs[new_bidx]);
SET_NIL_VALUE(blk);
@@ -2280,7 +2291,7 @@ RETRY_TRY_BLOCK:
else {
ci->mid = mid;
}
if (insn == OP_SEND || insn == OP_SENDB) {
if (insn == OP_SEND || insn == OP_SEND0 || insn == OP_SENDB) {
mrb_bool priv = TRUE;
if (m.flags & MRB_METHOD_PRIVATE_FL) {
vis_err:;