mirror of https://github.com/python/cpython
129 lines
3.7 KiB
C
129 lines
3.7 KiB
C
#include "Python.h"
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#include "pycore_call.h"
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#include "pycore_ceval.h"
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#include "pycore_dict.h"
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#include "pycore_emscripten_signal.h"
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#include "pycore_intrinsics.h"
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#include "pycore_long.h"
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#include "pycore_object.h"
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#include "pycore_opcode_metadata.h"
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#include "pycore_opcode_utils.h"
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#include "pycore_pyerrors.h"
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#include "pycore_range.h"
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#include "pycore_setobject.h" // _PySet_Update()
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#include "pycore_sliceobject.h"
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#include "pycore_uops.h"
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#include "ceval_macros.h"
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#undef ASSERT_KWNAMES_IS_NULL
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#define ASSERT_KWNAMES_IS_NULL() (void)0
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#undef DEOPT_IF
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#define DEOPT_IF(COND, INSTNAME) \
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if ((COND)) { \
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goto deoptimize; \
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}
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#undef ENABLE_SPECIALIZATION
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#define ENABLE_SPECIALIZATION 0
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_PyInterpreterFrame *
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_PyUopExecute(_PyExecutorObject *executor, _PyInterpreterFrame *frame, PyObject **stack_pointer)
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{
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#ifdef Py_DEBUG
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char *uop_debug = Py_GETENV("PYTHONUOPSDEBUG");
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int lltrace = 0;
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if (uop_debug != NULL && *uop_debug >= '0') {
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lltrace = *uop_debug - '0'; // TODO: Parse an int and all that
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}
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#define DPRINTF(level, ...) \
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if (lltrace >= (level)) { printf(__VA_ARGS__); }
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#else
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#define DPRINTF(level, ...)
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#endif
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DPRINTF(3,
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"Entering _PyUopExecute for %s (%s:%d) at byte offset %ld\n",
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PyUnicode_AsUTF8(_PyFrame_GetCode(frame)->co_qualname),
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PyUnicode_AsUTF8(_PyFrame_GetCode(frame)->co_filename),
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_PyFrame_GetCode(frame)->co_firstlineno,
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2 * (long)(frame->prev_instr + 1 -
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(_Py_CODEUNIT *)_PyFrame_GetCode(frame)->co_code_adaptive));
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PyThreadState *tstate = _PyThreadState_GET();
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_PyUOpExecutorObject *self = (_PyUOpExecutorObject *)executor;
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CHECK_EVAL_BREAKER();
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OBJECT_STAT_INC(optimization_traces_executed);
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_Py_CODEUNIT *ip_offset = (_Py_CODEUNIT *)_PyFrame_GetCode(frame)->co_code_adaptive;
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int pc = 0;
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int opcode;
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int oparg;
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uint64_t operand;
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for (;;) {
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opcode = self->trace[pc].opcode;
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oparg = self->trace[pc].oparg;
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operand = self->trace[pc].operand;
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DPRINTF(3,
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"%4d: uop %s, oparg %d, operand %" PRIu64 ", stack_level %d\n",
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pc,
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opcode < 256 ? _PyOpcode_OpName[opcode] : _PyOpcode_uop_name[opcode],
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oparg,
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operand,
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(int)(stack_pointer - _PyFrame_Stackbase(frame)));
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pc++;
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OBJECT_STAT_INC(optimization_uops_executed);
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switch (opcode) {
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#define TIER_TWO 2
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#include "executor_cases.c.h"
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default:
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{
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fprintf(stderr, "Unknown uop %d, operand %" PRIu64 "\n", opcode, operand);
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Py_FatalError("Unknown uop");
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}
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}
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}
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unbound_local_error:
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_PyEval_FormatExcCheckArg(tstate, PyExc_UnboundLocalError,
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UNBOUNDLOCAL_ERROR_MSG,
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PyTuple_GetItem(_PyFrame_GetCode(frame)->co_localsplusnames, oparg)
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);
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goto error;
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pop_4_error:
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STACK_SHRINK(1);
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pop_3_error:
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STACK_SHRINK(1);
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pop_2_error:
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STACK_SHRINK(1);
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pop_1_error:
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pop_1_exit_unwind:
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STACK_SHRINK(1);
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error:
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// On ERROR_IF we return NULL as the frame.
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// The caller recovers the frame from tstate->current_frame.
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DPRINTF(2, "Error: [Opcode %d, operand %" PRIu64 "]\n", opcode, operand);
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_PyFrame_SetStackPointer(frame, stack_pointer);
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Py_DECREF(self);
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return NULL;
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deoptimize:
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// On DEOPT_IF we just repeat the last instruction.
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// This presumes nothing was popped from the stack (nor pushed).
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DPRINTF(2, "DEOPT: [Opcode %d, operand %" PRIu64 "]\n", opcode, operand);
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frame->prev_instr--; // Back up to just before destination
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_PyFrame_SetStackPointer(frame, stack_pointer);
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Py_DECREF(self);
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return frame;
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}
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