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GH-89914: Make the oparg of the YIELD_VALUE instruction equal the sta… · python/cpython@3fd8610 · GitHub

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Commit 3fd8610

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markshannon
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GH-89914: Make the oparg of the YIELD_VALUE instruction equal the stack depth. (GH-92960)
1 parent 70aa1b9 commit 3fd8610

9 files changed

Lines changed: 35 additions & 26 deletions

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‎Doc/library/dis.rst‎

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@@ -575,6 +575,8 @@ iterations of the loop.
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Pops TOS and yields it from a :term:`generator`.
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.. versionchanged:: 3.11
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oparg set to be the stack depth, for efficient handling on frames.
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.. opcode:: YIELD_FROM
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‎Include/internal/pycore_opcode.h‎

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‎Include/opcode.h‎

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‎Lib/importlib/_bootstrap_external.py‎

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@@ -405,6 +405,7 @@ def _write_atomic(path, data, mode=0o666):
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# Python 3.11a7 3494 (New location info table)
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# Python 3.12a1 3500 (Remove PRECALL opcode)
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# Python 3.12a1 3501 (YIELD_VALUE oparg == stack_depth)
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# Python 3.13 will start with 3550
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@@ -418,7 +419,7 @@ def _write_atomic(path, data, mode=0o666):
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# Whenever MAGIC_NUMBER is changed, the ranges in the magic_values array
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# in PC/launcher.c must also be updated.
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MAGIC_NUMBER = (3500).to_bytes(2, 'little') + b'\r\n'
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MAGIC_NUMBER = (3501).to_bytes(2, 'little') + b'\r\n'
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_RAW_MAGIC_NUMBER = int.from_bytes(MAGIC_NUMBER, 'little') # For import.c
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‎Lib/opcode.py‎

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@@ -98,7 +98,7 @@ def jabs_op(name, op):
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def_op('RETURN_VALUE', 83)
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def_op('IMPORT_STAR', 84)
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def_op('SETUP_ANNOTATIONS', 85)
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def_op('YIELD_VALUE', 86)
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def_op('ASYNC_GEN_WRAP', 87)
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def_op('PREP_RERAISE_STAR', 88)
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def_op('POP_EXCEPT', 89)
@@ -174,7 +174,7 @@ def jabs_op(name, op):
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def_op('LOAD_CLASSDEREF', 148)
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hasfree.append(148)
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def_op('COPY_FREE_VARS', 149)
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def_op('YIELD_VALUE', 150)
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def_op('RESUME', 151)
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def_op('MATCH_CLASS', 152)
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‎Misc/NEWS.d/next/Core and Builtins/2022-05-19-15-29-53.gh-issue-89914.8bAffH.rst‎

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@@ -0,0 +1,2 @@
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The operand of the ``YIELD_VALUE`` instruction is set to the stack depth.
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This is done to help frame handling on ``yield`` and may assist debuggers.

‎Python/ceval.c‎

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@@ -2698,6 +2698,7 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
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}
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TARGET(YIELD_VALUE) {
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assert(oparg == STACK_LEVEL());
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assert(frame->is_entry);
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PyObject *retval = POP();
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_PyFrame_GetGenerator(frame)->gi_frame_state = FRAME_SUSPENDED;

‎Python/compile.c‎

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Original file line numberDiff line numberDiff line change
@@ -1962,7 +1962,7 @@ compiler_add_yield_from(struct compiler *c, int await)
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compiler_use_next_block(c, start);
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ADDOP_JUMP(c, SEND, exit);
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compiler_use_next_block(c, resume);
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ADDOP(c, YIELD_VALUE);
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ADDOP_I(c, YIELD_VALUE, 0);
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ADDOP_I(c, RESUME, await ? 3 : 2);
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ADDOP_JUMP(c, JUMP_NO_INTERRUPT, start);
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compiler_use_next_block(c, exit);
@@ -4193,7 +4193,7 @@ addop_yield(struct compiler *c) {
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if (c->u->u_ste->ste_generator && c->u->u_ste->ste_coroutine) {
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ADDOP(c, ASYNC_GEN_WRAP);
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}
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ADDOP(c, YIELD_VALUE);
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ADDOP_I(c, YIELD_VALUE, 0);
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ADDOP_I(c, RESUME, 1);
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return 1;
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}
@@ -7152,6 +7152,9 @@ stackdepth(struct compiler *c, basicblock *entry)
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next = NULL;
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break;
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}
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if (instr->i_opcode == YIELD_VALUE) {
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instr->i_oparg = depth;
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}
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}
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if (next != NULL) {
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assert(b->b_nofallthrough == 0);

‎Python/opcode_targets.h‎

Lines changed: 7 additions & 7 deletions
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