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codegen.c: peephole optimize OP_MOVE after OP_ARRAY or OP_HASH.

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When the length operand is zero, we don't need `OP_MOVE` but adjust the
destination operand instead.
This commit is contained in:
Yukihiro "Matz" Matsumoto
2021-10-08 12:09:05 +09:00
parent 7018286453
commit fd6d911b53
1 changed files with 3 additions and 0 deletions
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mrbgems/mruby-compiler/core/codegen.c
+3
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@@ -594,6 +594,9 @@ gen_move(codegen_scope *s, uint16_t dst, uint16_t src, int nopeep)
rewind_pc(s);
genop_1(s, data.insn, dst);
return;
case OP_HASH: case OP_ARRAY:
if (data.b != 0) goto normal;
/* fall through */
case OP_LOADI: case OP_LOADINEG:
case OP_LOADL: case OP_LOADSYM:
case OP_GETGV: case OP_GETSV: case OP_GETIV: case OP_GETCV: