Visitar URL original
gh-105481: add HAS_JUMP flag to opcode metadata by iritkatriel · Pull Request #105791 · python/cpython · GitHub
Skip to content

gh-105481: add HAS_JUMP flag to opcode metadata #105791

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
iritkatriel merged 6 commits into from
Jun 14, 2023
Merged

gh-105481: add HAS_JUMP flag to opcode metadata #105791

Show file tree
Hide file tree
Changes from 3 commits
Commits
Show all changes
6 commits
Select commit Hold shift + click to select a range
54aad59
gh-105481: add HAS_JUMP flag to opcode metadata
iritkatriel Jun 14, 2023
4db1ef5
Merge remote-tracking branch 'upstream/main' into has_jump
iritkatriel Jun 14, 2023
ace02ac
whitespace
iritkatriel Jun 14, 2023
fc3664d
typo
iritkatriel Jun 14, 2023
aeb3a09
add comment about ! in assertions
iritkatriel Jun 14, 2023
e12e583
Merge branch 'main' into has_jump
iritkatriel Jun 14, 2023
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 2 additions & 2 deletions Include/internal/pycore_opcode_utils.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -26,11 +26,11 @@ extern "C" {
(opcode) == SETUP_CLEANUP)

#define HAS_TARGET(opcode) \
(IS_JUMP_OPCODE(opcode) || IS_BLOCK_PUSH_OPCODE(opcode))
(OPCODE_HAS_JUMP(opcode) || IS_BLOCK_PUSH_OPCODE(opcode))

/* opcodes that must be last in the basicblock */
#define IS_TERMINATOR_OPCODE(opcode) \
(IS_JUMP_OPCODE(opcode) || IS_SCOPE_EXIT_OPCODE(opcode))
(OPCODE_HAS_JUMP(opcode) || IS_SCOPE_EXIT_OPCODE(opcode))

/* opcodes which are not emitted in codegen stage, only by the assembler */
#define IS_ASSEMBLER_OPCODE(opcode) \
Expand Down
34 changes: 19 additions & 15 deletions Python/bytecodes.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -430,7 +430,7 @@ dummy_func(
_Py_DECREF_SPECIALIZED(right, _PyUnicode_ExactDealloc);
ERROR_IF(*target_local == NULL, error);
// The STORE_FAST is already done.
JUMPBY(INLINE_CACHE_ENTRIES_BINARY_OP + 1);
SKIP_OVER(INLINE_CACHE_ENTRIES_BINARY_OP + 1);
}

macro(BINARY_OP_INPLACE_ADD_UNICODE) =
Expand Down Expand Up @@ -557,7 +557,7 @@ dummy_func(
STACK_SHRINK(2);
new_frame->localsplus[0] = container;
new_frame->localsplus[1] = sub;
JUMPBY(INLINE_CACHE_ENTRIES_BINARY_SUBSCR);
SKIP_OVER(INLINE_CACHE_ENTRIES_BINARY_SUBSCR);
frame->return_offset = 0;
DISPATCH_INLINED(new_frame);
}
Expand Down Expand Up @@ -879,7 +879,7 @@ dummy_func(
gen->gi_frame_state = FRAME_EXECUTING;
gen->gi_exc_state.previous_item = tstate->exc_info;
tstate->exc_info = &gen->gi_exc_state;
JUMPBY(INLINE_CACHE_ENTRIES_SEND);
SKIP_OVER(INLINE_CACHE_ENTRIES_SEND);
DISPATCH_INLINED(gen_frame);
}
if (Py_IsNone(v) && PyIter_Check(receiver)) {
Expand Down Expand Up @@ -918,7 +918,7 @@ dummy_func(
gen->gi_frame_state = FRAME_EXECUTING;
gen->gi_exc_state.previous_item = tstate->exc_info;
tstate->exc_info = &gen->gi_exc_state;
JUMPBY(INLINE_CACHE_ENTRIES_SEND);
SKIP_OVER(INLINE_CACHE_ENTRIES_SEND);
DISPATCH_INLINED(gen_frame);
}

Expand Down Expand Up @@ -1905,7 +1905,7 @@ dummy_func(
int shrink_stack = !(oparg & 1);
STACK_SHRINK(shrink_stack);
new_frame->localsplus[0] = owner;
JUMPBY(INLINE_CACHE_ENTRIES_LOAD_ATTR);
SKIP_OVER(INLINE_CACHE_ENTRIES_LOAD_ATTR);
frame->return_offset = 0;
DISPATCH_INLINED(new_frame);
}
Expand Down Expand Up @@ -1933,7 +1933,7 @@ dummy_func(
STACK_SHRINK(shrink_stack);
new_frame->localsplus[0] = owner;
new_frame->localsplus[1] = Py_NewRef(name);
JUMPBY(INLINE_CACHE_ENTRIES_LOAD_ATTR);
SKIP_OVER(INLINE_CACHE_ENTRIES_LOAD_ATTR);
frame->return_offset = 0;
DISPATCH_INLINED(new_frame);
}
Expand Down Expand Up @@ -2356,8 +2356,9 @@ dummy_func(
next_instr[INLINE_CACHE_ENTRIES_FOR_ITER + oparg].op.code == INSTRUMENTED_END_FOR);
Py_DECREF(iter);
STACK_SHRINK(1);
SKIP_OVER(INLINE_CACHE_ENTRIES_FOR_ITER);
/* Jump forward oparg, then skip following END_FOR instruction */
JUMPBY(INLINE_CACHE_ENTRIES_FOR_ITER + oparg + 1);
JUMPBY(oparg + 1);
DISPATCH();
}
// Common case: no jump, leave it to the code generator
Expand Down Expand Up @@ -2406,8 +2407,9 @@ dummy_func(
}
Py_DECREF(iter);
STACK_SHRINK(1);
SKIP_OVER(INLINE_CACHE_ENTRIES_FOR_ITER);
/* Jump forward oparg, then skip following END_FOR instruction */
JUMPBY(INLINE_CACHE_ENTRIES_FOR_ITER + oparg + 1);
JUMPBY(oparg + 1);
DISPATCH();
end_for_iter_list:
// Common case: no jump, leave it to the code generator
Expand All @@ -2428,8 +2430,9 @@ dummy_func(
}
Py_DECREF(iter);
STACK_SHRINK(1);
SKIP_OVER(INLINE_CACHE_ENTRIES_FOR_ITER);
/* Jump forward oparg, then skip following END_FOR instruction */
JUMPBY(INLINE_CACHE_ENTRIES_FOR_ITER + oparg + 1);
JUMPBY(oparg + 1);
DISPATCH();
end_for_iter_tuple:
// Common case: no jump, leave it to the code generator
Expand All @@ -2442,8 +2445,9 @@ dummy_func(
if (r->len <= 0) {
STACK_SHRINK(1);
Py_DECREF(r);
SKIP_OVER(INLINE_CACHE_ENTRIES_FOR_ITER);
// Jump over END_FOR instruction.
JUMPBY(INLINE_CACHE_ENTRIES_FOR_ITER + oparg + 1);
JUMPBY(oparg + 1);
DISPATCH();
}
long value = r->start;
Expand All @@ -2467,7 +2471,7 @@ dummy_func(
gen->gi_frame_state = FRAME_EXECUTING;
gen->gi_exc_state.previous_item = tstate->exc_info;
tstate->exc_info = &gen->gi_exc_state;
JUMPBY(INLINE_CACHE_ENTRIES_FOR_ITER);
SKIP_OVER(INLINE_CACHE_ENTRIES_FOR_ITER);
assert(next_instr[oparg].op.code == END_FOR ||
next_instr[oparg].op.code == INSTRUMENTED_END_FOR);
DISPATCH_INLINED(gen_frame);
Expand Down Expand Up @@ -2738,7 +2742,7 @@ dummy_func(
if (new_frame == NULL) {
goto error;
}
JUMPBY(INLINE_CACHE_ENTRIES_CALL);
SKIP_OVER(INLINE_CACHE_ENTRIES_CALL);
frame->return_offset = 0;
DISPATCH_INLINED(new_frame);
}
Expand Down Expand Up @@ -2812,7 +2816,7 @@ dummy_func(
}
// Manipulate stack directly since we leave using DISPATCH_INLINED().
STACK_SHRINK(oparg + 2);
JUMPBY(INLINE_CACHE_ENTRIES_CALL);
SKIP_OVER(INLINE_CACHE_ENTRIES_CALL);
frame->return_offset = 0;
DISPATCH_INLINED(new_frame);
}
Expand Down Expand Up @@ -2850,7 +2854,7 @@ dummy_func(
}
// Manipulate stack and cache directly since we leave using DISPATCH_INLINED().
STACK_SHRINK(oparg + 2);
JUMPBY(INLINE_CACHE_ENTRIES_CALL);
SKIP_OVER(INLINE_CACHE_ENTRIES_CALL);
frame->return_offset = 0;
DISPATCH_INLINED(new_frame);
}
Expand Down Expand Up @@ -3093,7 +3097,7 @@ dummy_func(
Py_DECREF(method);
STACK_SHRINK(3);
// CALL + POP_TOP
JUMPBY(INLINE_CACHE_ENTRIES_CALL + 1);
SKIP_OVER(INLINE_CACHE_ENTRIES_CALL + 1);
assert(next_instr[-1].op.code == POP_TOP);
DISPATCH();
}
Expand Down
6 changes: 6 additions & 0 deletions Python/ceval_macros.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -145,7 +145,13 @@ GETITEM(PyObject *v, Py_ssize_t i) {
oparg = word.op.arg; \
} while (0)
#define JUMPTO(x) (next_instr = _PyCode_CODE(_PyFrame_GetCode(frame)) + (x))

/* JUMPBY makes the generator identify the instruction as a jump. SKIP_OVER is
* for advancing to the next instruction, taking into account cache entries
* and skipped instructions into account.
Comment thread
iritkatriel marked this conversation as resolved.
Outdated
*/
#define JUMPBY(x) (next_instr += (x))
#define SKIP_OVER(x) (next_instr += (x))

/* OpCode prediction macros
Some opcodes tend to come in pairs thus making it possible to
Expand Down
3 changes: 2 additions & 1 deletion Python/compile.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -250,6 +250,7 @@ instr_sequence_addop(instr_sequence *seq, int opcode, int oparg, location loc)
{
assert(!HAS_ARG(opcode) == !OPCODE_HAS_ARG(opcode));
assert(!HAS_CONST(opcode) == !OPCODE_HAS_CONST(opcode));
assert(!OPCODE_HAS_JUMP(opcode) == !OPCODE_HAS_JUMP(opcode));
assert(0 <= opcode && opcode <= MAX_OPCODE);
assert(IS_PSEUDO_OPCODE(opcode) == IS_PSEUDO_INSTR(opcode));
assert(IS_WITHIN_OPCODE_RANGE(opcode));
Expand Down Expand Up @@ -1114,7 +1115,7 @@ codegen_addop_j(instr_sequence *seq, location loc,
int opcode, jump_target_label target)
{
assert(IS_LABEL(target));
assert(IS_JUMP_OPCODE(opcode) || IS_BLOCK_PUSH_OPCODE(opcode));
assert(OPCODE_HAS_JUMP(opcode) || IS_BLOCK_PUSH_OPCODE(opcode));
assert(!IS_ASSEMBLER_OPCODE(opcode));
return instr_sequence_addop(seq, opcode, target.id, loc);
}
Expand Down
3 changes: 2 additions & 1 deletion Python/flowgraph.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -45,7 +45,8 @@ is_block_push(cfg_instr *i)
static inline int
is_jump(cfg_instr *i)
{
return IS_JUMP_OPCODE(i->i_opcode);
assert(!OPCODE_HAS_JUMP(i->i_opcode) == !IS_JUMP_OPCODE(i->i_opcode));
return OPCODE_HAS_JUMP(i->i_opcode);
}

/* One arg*/
Expand Down
Loading