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| author | Yukihiro "Matz" Matsumoto <[email protected]> | 2021-11-17 16:33:53 +0900 |
|---|---|---|
| committer | Yukihiro "Matz" Matsumoto <[email protected]> | 2021-11-17 16:33:53 +0900 |
| commit | f5d9aab37227766b46c836871204d56c3c512801 (patch) | |
| tree | 9814c263da7155f488859f9250bbd3263d170369 /mrbgems | |
| parent | e3e54453a711461b9e39fa7c4fc6cbdd75120feb (diff) | |
| download | mruby-f5d9aab37227766b46c836871204d56c3c512801.tar.gz mruby-f5d9aab37227766b46c836871204d56c3c512801.zip | |
codegen.c: should not emit the `MOVE` instruction to the same register.
Diffstat (limited to 'mrbgems')
| -rw-r--r-- | mrbgems/mruby-compiler/core/codegen.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/mrbgems/mruby-compiler/core/codegen.c b/mrbgems/mruby-compiler/core/codegen.c index 7edcd2029..013e65ee0 100644 --- a/mrbgems/mruby-compiler/core/codegen.c +++ b/mrbgems/mruby-compiler/core/codegen.c @@ -577,6 +577,7 @@ static void gen_move(codegen_scope *s, uint16_t dst, uint16_t src, int nopeep) { if (nopeep || no_peephole(s)) goto normal; + else if (dst == src) return; else { struct mrb_insn_data data = mrb_last_insn(s); @@ -1804,7 +1805,7 @@ gen_assignment(codegen_scope *s, node *tree, int sp, int val) gen_call(s, tree, attrsym(s, nsym(tree->cdr->car)), sp, NOVAL, type == NODE_SCALL); pop(); - if (val) { + if (val && cursp() != sp) { gen_move(s, cursp(), sp, 0); } break; |