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gh-104584: Emit macro expansions to opcode_metadata.h #106163

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Merged
gvanrossum merged 5 commits into from
Jun 28, 2023
Merged

gh-104584: Emit macro expansions to opcode_metadata.h #106163

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605f930
Write macro expansions to opcode_metadata.h
gvanrossum Jun 27, 2023
bbc5951
Print uop names in uops debug output
gvanrossum Jun 27, 2023
60403c9
Only output uop names in debug mode
gvanrossum Jun 27, 2023
9e35908
Attempt to silence c-analyzer
gvanrossum Jun 28, 2023
ea90c43
Make Instruction and MacroInstruction pre-compute active cache effects
gvanrossum Jun 28, 2023
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6 changes: 3 additions & 3 deletions Python/ceval.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2817,10 +2817,10 @@ _PyUopExecute(_PyExecutorObject *executor, _PyInterpreterFrame *frame, PyObject
oparg = (int)operand;
#ifdef LLTRACE
if (lltrace >= 3) {
const char *opname = opcode < 256 ? _PyOpcode_OpName[opcode] : "";
const char *opname = opcode < 256 ? _PyOpcode_OpName[opcode] : _PyOpcode_uop_name[opcode];
int stack_level = (int)(stack_pointer - _PyFrame_Stackbase(frame));
fprintf(stderr, " uop %s %d, operand %" PRIu64 ", stack_level %d\n",
opname, opcode, operand, stack_level);
fprintf(stderr, " uop %s, operand %" PRIu64 ", stack_level %d\n",
opname, operand, stack_level);
}
#endif
pc++;
Expand Down
32 changes: 32 additions & 0 deletions Python/opcode_metadata.h
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Expand Up @@ -913,6 +913,9 @@ struct opcode_macro_expansion {
#ifndef NEED_OPCODE_METADATA
extern const struct opcode_metadata _PyOpcode_opcode_metadata[512];
extern const struct opcode_macro_expansion _PyOpcode_macro_expansion[256];
#ifdef Py_DEBUG
extern const char * const _PyOpcode_uop_name[512];
#endif
#else
const struct opcode_metadata _PyOpcode_opcode_metadata[512] = {
[NOP] = { true, INSTR_FMT_IX, 0 },
Expand Down Expand Up @@ -1131,10 +1134,18 @@ const struct opcode_macro_expansion _PyOpcode_macro_expansion[256] = {
[STORE_FAST] = { .nuops = 1, .uops = { { STORE_FAST, 0, 0 } } },
[POP_TOP] = { .nuops = 1, .uops = { { POP_TOP, 0, 0 } } },
[PUSH_NULL] = { .nuops = 1, .uops = { { PUSH_NULL, 0, 0 } } },
[END_FOR] = { .nuops = 2, .uops = { { POP_TOP, 0, 0 }, { POP_TOP, 0, 0 } } },
[END_SEND] = { .nuops = 1, .uops = { { END_SEND, 0, 0 } } },
[UNARY_NEGATIVE] = { .nuops = 1, .uops = { { UNARY_NEGATIVE, 0, 0 } } },
[UNARY_NOT] = { .nuops = 1, .uops = { { UNARY_NOT, 0, 0 } } },
[UNARY_INVERT] = { .nuops = 1, .uops = { { UNARY_INVERT, 0, 0 } } },
[BINARY_OP_MULTIPLY_INT] = { .nuops = 2, .uops = { { _GUARD_BOTH_INT, 0, 0 }, { _BINARY_OP_MULTIPLY_INT, 0, 0 } } },
[BINARY_OP_ADD_INT] = { .nuops = 2, .uops = { { _GUARD_BOTH_INT, 0, 0 }, { _BINARY_OP_ADD_INT, 0, 0 } } },
[BINARY_OP_SUBTRACT_INT] = { .nuops = 2, .uops = { { _GUARD_BOTH_INT, 0, 0 }, { _BINARY_OP_SUBTRACT_INT, 0, 0 } } },
[BINARY_OP_MULTIPLY_FLOAT] = { .nuops = 2, .uops = { { _GUARD_BOTH_FLOAT, 0, 0 }, { _BINARY_OP_MULTIPLY_FLOAT, 0, 0 } } },
[BINARY_OP_ADD_FLOAT] = { .nuops = 2, .uops = { { _GUARD_BOTH_FLOAT, 0, 0 }, { _BINARY_OP_ADD_FLOAT, 0, 0 } } },
[BINARY_OP_SUBTRACT_FLOAT] = { .nuops = 2, .uops = { { _GUARD_BOTH_FLOAT, 0, 0 }, { _BINARY_OP_SUBTRACT_FLOAT, 0, 0 } } },
[BINARY_OP_ADD_UNICODE] = { .nuops = 2, .uops = { { _GUARD_BOTH_UNICODE, 0, 0 }, { _BINARY_OP_ADD_UNICODE, 0, 0 } } },
[BINARY_SLICE] = { .nuops = 1, .uops = { { BINARY_SLICE, 0, 0 } } },
[STORE_SLICE] = { .nuops = 1, .uops = { { STORE_SLICE, 0, 0 } } },
[BINARY_SUBSCR_LIST_INT] = { .nuops = 1, .uops = { { BINARY_SUBSCR_LIST_INT, 0, 0 } } },
Expand Down Expand Up @@ -1162,6 +1173,9 @@ const struct opcode_macro_expansion _PyOpcode_macro_expansion[256] = {
[DELETE_ATTR] = { .nuops = 1, .uops = { { DELETE_ATTR, 0, 0 } } },
[STORE_GLOBAL] = { .nuops = 1, .uops = { { STORE_GLOBAL, 0, 0 } } },
[DELETE_GLOBAL] = { .nuops = 1, .uops = { { DELETE_GLOBAL, 0, 0 } } },
[LOAD_LOCALS] = { .nuops = 1, .uops = { { _LOAD_LOCALS, 0, 0 } } },
[LOAD_NAME] = { .nuops = 2, .uops = { { _LOAD_LOCALS, 0, 0 }, { _LOAD_FROM_DICT_OR_GLOBALS, 0, 0 } } },
[LOAD_FROM_DICT_OR_GLOBALS] = { .nuops = 1, .uops = { { _LOAD_FROM_DICT_OR_GLOBALS, 0, 0 } } },
[DELETE_DEREF] = { .nuops = 1, .uops = { { DELETE_DEREF, 0, 0 } } },
[LOAD_FROM_DICT_OR_DEREF] = { .nuops = 1, .uops = { { LOAD_FROM_DICT_OR_DEREF, 0, 0 } } },
[LOAD_DEREF] = { .nuops = 1, .uops = { { LOAD_DEREF, 0, 0 } } },
Expand Down Expand Up @@ -1207,4 +1221,22 @@ const struct opcode_macro_expansion _PyOpcode_macro_expansion[256] = {
[COPY] = { .nuops = 1, .uops = { { COPY, 0, 0 } } },
[SWAP] = { .nuops = 1, .uops = { { SWAP, 0, 0 } } },
};
#ifdef Py_DEBUG
const char * const _PyOpcode_uop_name[512] = {
[300] = "EXIT_TRACE",
[301] = "SET_IP",
[302] = "_GUARD_BOTH_INT",
[303] = "_BINARY_OP_MULTIPLY_INT",
[304] = "_BINARY_OP_ADD_INT",
[305] = "_BINARY_OP_SUBTRACT_INT",
[306] = "_GUARD_BOTH_FLOAT",
[307] = "_BINARY_OP_MULTIPLY_FLOAT",
[308] = "_BINARY_OP_ADD_FLOAT",
[309] = "_BINARY_OP_SUBTRACT_FLOAT",
[310] = "_GUARD_BOTH_UNICODE",
[311] = "_BINARY_OP_ADD_UNICODE",
[312] = "_LOAD_LOCALS",
[313] = "_LOAD_FROM_DICT_OR_GLOBALS",
};
#endif
#endif
8 changes: 5 additions & 3 deletions Python/optimizer.c
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Expand Up @@ -325,8 +325,8 @@ translate_bytecode_to_trace(
}
#define ADD_TO_TRACE(OPCODE, OPERAND) \
if (lltrace >= 2) { \
const char *opname = (OPCODE) < 256 ? _PyOpcode_OpName[(OPCODE)] : ""; \
fprintf(stderr, " ADD_TO_TRACE(%s %d, %" PRIu64 ")\n", opname, (OPCODE), (uint64_t)(OPERAND)); \
const char *opname = (OPCODE) < 256 ? _PyOpcode_OpName[(OPCODE)] : _PyOpcode_uop_name[(OPCODE)]; \
fprintf(stderr, " ADD_TO_TRACE(%s, %" PRIu64 ")\n", opname, (uint64_t)(OPERAND)); \
} \
trace[trace_length].opcode = (OPCODE); \
trace[trace_length].operand = (OPERAND); \
Expand Down Expand Up @@ -474,6 +474,8 @@ PyUnstable_Optimizer_NewUOpOptimizer(void)
}
opt->optimize = uop_optimize;
opt->resume_threshold = UINT16_MAX;
opt->backedge_threshold = 0;
// Need at least 3 iterations to settle specializations.
// A few lower bits of the counter are reserved for other flags.
opt->backedge_threshold = 3 << OPTIMIZER_BITS_IN_COUNTER;
return (PyObject *)opt;
}
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