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gh-98831: Finish the UNPACK_SEQUENCE family (#101666)

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New generator feature: Generate useful glue for output arrays, so you can just write values to the output array (no bounds checking). Rewrote UNPACK_SEQUENCE_TWO_TUPLE to use this, and also UNPACK_SEQUENCE_{TUPLE,LIST}.
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Guido van Rossum 2023-02-07 15:44:37 -08:00 • committed by GitHub
parent 753fc8a5d6
commit aacbdb0c65
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5 changed files with 72 additions and 63 deletions
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16
Python/opcode_metadata.h
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@ -127,9 +127,9 @@ _PyOpcode_num_popped(int opcode, int oparg, bool jump) {
case UNPACK_SEQUENCE_TWO_TUPLE:
return 1;
case UNPACK_SEQUENCE_TUPLE:
return -1;
return 1;
case UNPACK_SEQUENCE_LIST:
return -1;
return 1;
case UNPACK_EX:
return 1;
case STORE_ATTR:
@ -473,11 +473,11 @@ _PyOpcode_num_pushed(int opcode, int oparg, bool jump) {
case UNPACK_SEQUENCE:
return oparg;
case UNPACK_SEQUENCE_TWO_TUPLE:
return 2;
return oparg;
case UNPACK_SEQUENCE_TUPLE:
return -1;
return oparg;
case UNPACK_SEQUENCE_LIST:
return -1;
return oparg;
case UNPACK_EX:
return (oparg & 0xFF) + (oparg >> 8) + 1;
case STORE_ATTR:
@ -765,9 +765,9 @@ struct opcode_metadata {
[STORE_NAME] = { DIR_NONE, DIR_NONE, DIR_NONE, true, INSTR_FMT_IB },
[DELETE_NAME] = { DIR_NONE, DIR_NONE, DIR_NONE, true, INSTR_FMT_IB },
[UNPACK_SEQUENCE] = { DIR_NONE, DIR_NONE, DIR_NONE, true, INSTR_FMT_IBC },
[UNPACK_SEQUENCE_TWO_TUPLE] = { DIR_NONE, DIR_NONE, DIR_NONE, true, INSTR_FMT_IXC },
[UNPACK_SEQUENCE_TUPLE] = { DIR_NONE, DIR_NONE, DIR_NONE, true, INSTR_FMT_IB },
[UNPACK_SEQUENCE_LIST] = { DIR_NONE, DIR_NONE, DIR_NONE, true, INSTR_FMT_IB },
[UNPACK_SEQUENCE_TWO_TUPLE] = { DIR_NONE, DIR_NONE, DIR_NONE, true, INSTR_FMT_IBC },
[UNPACK_SEQUENCE_TUPLE] = { DIR_NONE, DIR_NONE, DIR_NONE, true, INSTR_FMT_IBC },
[UNPACK_SEQUENCE_LIST] = { DIR_NONE, DIR_NONE, DIR_NONE, true, INSTR_FMT_IBC },
[UNPACK_EX] = { DIR_NONE, DIR_NONE, DIR_NONE, true, INSTR_FMT_IB },
[STORE_ATTR] = { DIR_NONE, DIR_NONE, DIR_NONE, true, INSTR_FMT_IBC000 },
[DELETE_ATTR] = { DIR_NONE, DIR_NONE, DIR_NONE, true, INSTR_FMT_IB },