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py: Clarify which mp_unary_op_t's may appear in the bytecode.

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Not all can, so we don't need to reserve bytecodes for them, and can
use free slots for something else later.
This commit is contained in:
Paul Sokolovsky 2017-09-25 16:35:19 -07:00
parent f008263022
commit 9d836fedbd
5 changed files with 15 additions and 11 deletions
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2
py/bc0.h
View File

@ -113,7 +113,7 @@
#define MP_BC_LOAD_CONST_SMALL_INT_MULTI (0x70) // + N(64)
#define MP_BC_LOAD_FAST_MULTI (0xb0) // + N(16)
#define MP_BC_STORE_FAST_MULTI (0xc0) // + N(16)
#define MP_BC_UNARY_OP_MULTI (0xd0) // + op(7)
#define MP_BC_UNARY_OP_MULTI (0xd0) // + op(<MP_UNARY_OP_NON_BYTECODE)
#define MP_BC_BINARY_OP_MULTI (0xd7) // + op(36)
#endif // MICROPY_INCLUDED_PY_BC0_H

14
py/runtime0.h
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@ -42,16 +42,20 @@
#define MP_NATIVE_TYPE_PTR16 (0x06)
#define MP_NATIVE_TYPE_PTR32 (0x07)
// Note: the first 7 of these are used in bytecode and changing
// them requires changing the bytecode version.
typedef enum {
MP_UNARY_OP_BOOL, // __bool__
MP_UNARY_OP_LEN, // __len__
MP_UNARY_OP_HASH, // __hash__; must return a small int
// These ops may appear in the bytecode. Changing this group
// in any way requires changing the bytecode version.
MP_UNARY_OP_POSITIVE,
MP_UNARY_OP_NEGATIVE,
MP_UNARY_OP_INVERT,
MP_UNARY_OP_NOT,
// Following ops cannot appear in the bytecode
MP_UNARY_OP_NON_BYTECODE,
MP_UNARY_OP_BOOL = MP_UNARY_OP_NON_BYTECODE, // __bool__
MP_UNARY_OP_LEN, // __len__
MP_UNARY_OP_HASH, // __hash__; must return a small int
MP_UNARY_OP_ABS, // __abs__
MP_UNARY_OP_SIZEOF, // for sys.getsizeof()
} mp_unary_op_t;

2
py/showbc.c
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@ -539,7 +539,7 @@ const byte *mp_bytecode_print_str(const byte *ip) {
printf("LOAD_FAST " UINT_FMT, (mp_uint_t)ip[-1] - MP_BC_LOAD_FAST_MULTI);
} else if (ip[-1] < MP_BC_STORE_FAST_MULTI + 16) {
printf("STORE_FAST " UINT_FMT, (mp_uint_t)ip[-1] - MP_BC_STORE_FAST_MULTI);
} else if (ip[-1] < MP_BC_UNARY_OP_MULTI + 7) {
} else if (ip[-1] < MP_BC_UNARY_OP_MULTI + MP_UNARY_OP_NON_BYTECODE) {
printf("UNARY_OP " UINT_FMT, (mp_uint_t)ip[-1] - MP_BC_UNARY_OP_MULTI);
} else if (ip[-1] < MP_BC_BINARY_OP_MULTI + 36) {
mp_uint_t op = ip[-1] - MP_BC_BINARY_OP_MULTI;

2
py/vmentrytable.h
View File

@ -109,7 +109,7 @@ static const void *const entry_table[256] = {
[MP_BC_LOAD_CONST_SMALL_INT_MULTI ... MP_BC_LOAD_CONST_SMALL_INT_MULTI + 63] = &&entry_MP_BC_LOAD_CONST_SMALL_INT_MULTI,
[MP_BC_LOAD_FAST_MULTI ... MP_BC_LOAD_FAST_MULTI + 15] = &&entry_MP_BC_LOAD_FAST_MULTI,
[MP_BC_STORE_FAST_MULTI ... MP_BC_STORE_FAST_MULTI + 15] = &&entry_MP_BC_STORE_FAST_MULTI,
[MP_BC_UNARY_OP_MULTI ... MP_BC_UNARY_OP_MULTI + 6] = &&entry_MP_BC_UNARY_OP_MULTI,
[MP_BC_UNARY_OP_MULTI ... MP_BC_UNARY_OP_MULTI + MP_UNARY_OP_NON_BYTECODE - 1] = &&entry_MP_BC_UNARY_OP_MULTI,
[MP_BC_BINARY_OP_MULTI ... MP_BC_BINARY_OP_MULTI + 35] = &&entry_MP_BC_BINARY_OP_MULTI,
};

6
tests/cmdline/cmd_showbc.py.exp
View File

@ -87,10 +87,10 @@ Raw bytecode (code_info_size=\\d\+, bytecode_size=\\d\+):
\\d\+ BINARY_OP 28 __add__
\\d\+ STORE_FAST 8
\\d\+ LOAD_FAST 0
\\d\+ UNARY_OP 4
\\d\+ UNARY_OP 1
\\d\+ STORE_FAST 9
\\d\+ LOAD_FAST 0
\\d\+ UNARY_OP 6
\\d\+ UNARY_OP 3
\\d\+ STORE_FAST 10
\\d\+ LOAD_FAST 0
\\d\+ LOAD_DEREF 14
@ -111,7 +111,7 @@ Raw bytecode (code_info_size=\\d\+, bytecode_size=\\d\+):
\\d\+ LOAD_DEREF 14
\\d\+ LOAD_FAST 1
\\d\+ BINARY_OP 2 __eq__
\\d\+ UNARY_OP 6
\\d\+ UNARY_OP 3
\\d\+ STORE_FAST 10
\\d\+ LOAD_DEREF 14
\\d\+ LOAD_ATTR c (cache=0)