mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-07-08 03:45:36 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 8

GH-111485: Generate instruction and uop metadata (GH-113287)

Browse source
This commit is contained in:
Mark Shannon 2023-12-20 14:27:25 +00:00 • committed by GitHub
parent a545a86ec6
commit e96f26083b
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
27 changed files with 1738 additions and 1269 deletions
Download patch file Download diff file Expand all files Collapse all files

32
Python/optimizer.c
View file

@ -6,14 +6,20 @@
#include "pycore_opcode_utils.h" // MAX_REAL_OPCODE
#include "pycore_optimizer.h" // _Py_uop_analyze_and_optimize()
#include "pycore_pystate.h" // _PyInterpreterState_GET()
#include "pycore_uop_ids.h"
#include "pycore_uops.h"
#include "cpython/optimizer.h"
#include <stdbool.h>
#include <stdint.h>
#include <stddef.h>
#define NEED_OPCODE_METADATA
#include "pycore_uop_metadata.h" // Uop tables
#undef NEED_OPCODE_METADATA
#define MAX_EXECUTORS_SIZE 256
static bool
has_space_for_executor(PyCodeObject *code, _Py_CODEUNIT *instr)
{
@ -327,9 +333,6 @@ uop_dealloc(_PyUOpExecutorObject *self) {
const char *
_PyUOpName(int index)
{
if (index <= MAX_REAL_OPCODE) {
return _PyOpcode_OpName[index];
}
return _PyOpcode_uop_name[index];
}
@ -388,7 +391,7 @@ PyTypeObject _PyUOpExecutor_Type = {
/* TO DO -- Generate these tables */
static const uint16_t
_PyUOp_Replacements[OPCODE_METADATA_SIZE] = {
_PyUOp_Replacements[MAX_UOP_ID + 1] = {
[_ITER_JUMP_RANGE] = _GUARD_NOT_EXHAUSTED_RANGE,
[_ITER_JUMP_LIST] = _GUARD_NOT_EXHAUSTED_LIST,
[_ITER_JUMP_TUPLE] = _GUARD_NOT_EXHAUSTED_TUPLE,
@ -629,14 +632,6 @@ top: // Jump here after _PUSH_FRAME or likely branches
oparg += extras;
}
}
if (_PyUOp_Replacements[uop]) {
uop = _PyUOp_Replacements[uop];
if (uop == _FOR_ITER_TIER_TWO) {
target += 1 + INLINE_CACHE_ENTRIES_FOR_ITER + oparg + 1;
assert(_PyCode_CODE(code)[target-1].op.code == END_FOR ||
_PyCode_CODE(code)[target-1].op.code == INSTRUMENTED_END_FOR);
}
}
break;
case OPARG_CACHE_1:
operand = read_u16(&instr[offset].cache);
@ -657,7 +652,15 @@ top: // Jump here after _PUSH_FRAME or likely branches
oparg = offset;
assert(uop == _SAVE_RETURN_OFFSET);
break;
case OPARG_REPLACED:
uop = _PyUOp_Replacements[uop];
assert(uop != 0);
if (uop == _FOR_ITER_TIER_TWO) {
target += 1 + INLINE_CACHE_ENTRIES_FOR_ITER + oparg + 1;
assert(_PyCode_CODE(code)[target-1].op.code == END_FOR ||
_PyCode_CODE(code)[target-1].op.code == INSTRUMENTED_END_FOR);
}
break;
default:
fprintf(stderr,
"opcode=%d, oparg=%d; nuops=%d, i=%d; size=%d, offset=%d\n",
@ -799,7 +802,8 @@ compute_used(_PyUOpInstruction *buffer, uint32_t *used)
}
/* All other micro-ops fall through, so i+1 is reachable */
SET_BIT(used, i+1);
if (OPCODE_HAS_JUMP(opcode)) {
assert(opcode <= MAX_UOP_ID);
if (_PyUop_Flags[opcode] & HAS_JUMP_FLAG) {
/* Mark target as reachable */
SET_BIT(used, buffer[i].oparg);
}