diff options
| -rw-r--r-- | erts/emulator/beam/beam_emu.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/erts/emulator/beam/beam_emu.c b/erts/emulator/beam/beam_emu.c index 9a91fdce08..6010c17c17 100644 --- a/erts/emulator/beam/beam_emu.c +++ b/erts/emulator/beam/beam_emu.c @@ -3044,10 +3044,12 @@ do { \ GetArg2(2, Op1, Op2); if (is_both_small(Op1, Op2)) { /* - * We could extract the tag from one argument, but a tag extraction - * could mean a shift. Therefore, play it safe here. + * TAG ^ TAG == 0. + * + * Therefore, we perform the XOR operation on the tagged values, + * and OR in the tag bits. */ - Eterm result = make_small(signed_val(Op1) ^ signed_val(Op2)); + Eterm result = (Op1 ^ Op2) | make_small(0); StoreBifResult(4, result); } DO_OUTLINED_ARITH_2(bxor, Op1, Op2); |