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codegen.c: skip overwritten MOVE instructions.

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This commit is contained in:
Yukihiro "Matz" Matsumoto
2022-03-30 15:34:40 +09:00
parent 60cf382ff9
commit a3f2c95334
1 changed files with 5 additions and 1 deletions
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mrbgems/mruby-compiler/core/codegen.c
+5 -1
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@@ -600,11 +600,15 @@ gen_move(codegen_scope *s, uint16_t dst, uint16_t src, int nopeep)
return;
if (data.a < s->nlocals) goto normal;
rewind_pc(s);
genop_2(s, OP_MOVE, dst, data.b);
s->lastpc = addr_pc(s, mrb_prev_pc(s, data.addr));
gen_move(s, dst, data.b, FALSE);
return;
}
if (dst == data.a) { /* skip overwritten move */
rewind_pc(s);
s->lastpc = addr_pc(s, mrb_prev_pc(s, data.addr));
gen_move(s, dst, src, FALSE);
return;
}
goto normal;
case OP_LOADNIL: case OP_LOADSELF: case OP_LOADT: case OP_LOADF: