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gh-87092: create new opcode_utils.h file and move macros there, so they can be shared by iritkatriel · Pull Request #102926 · python/cpython · GitHub

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gh-87092: create new opcode_utils.h file and move macros there, so they can be shared #102926

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gh-87092: create new opcode_utils.h file and move macros there, so they can be shared #102926

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108 changes: 108 additions & 0 deletions Include/internal/pycore_opcode_utils.h
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Original file line number Diff line number Diff line change
@@ -0,0 +1,108 @@
#ifndef Py_INTERNAL_OPCODE_UTILS_H
#define Py_INTERNAL_OPCODE_UTILS_H
#ifdef __cplusplus
extern "C" {
#endif

#ifndef Py_BUILD_CORE
# error "this header requires Py_BUILD_CORE define"
#endif

#include "pycore_opcode.h" // _PyOpcode_RelativeJump


#define MAX_REAL_OPCODE 254

#define IS_WITHIN_OPCODE_RANGE(opcode) \
(((opcode) >= 0 && (opcode) <= MAX_REAL_OPCODE) || \
IS_PSEUDO_OPCODE(opcode))

#define IS_JUMP_OPCODE(opcode) \
is_bit_set_in_table(_PyOpcode_Jump, opcode)

#define IS_BLOCK_PUSH_OPCODE(opcode) \
((opcode) == SETUP_FINALLY || \
(opcode) == SETUP_WITH || \
(opcode) == SETUP_CLEANUP)

#define HAS_TARGET(opcode) \
(IS_JUMP_OPCODE(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))

/* opcodes which are not emitted in codegen stage, only by the assembler */
#define IS_ASSEMBLER_OPCODE(opcode) \
((opcode) == JUMP_FORWARD || \
(opcode) == JUMP_BACKWARD || \
(opcode) == JUMP_BACKWARD_NO_INTERRUPT)

#define IS_BACKWARDS_JUMP_OPCODE(opcode) \
((opcode) == JUMP_BACKWARD || \
(opcode) == JUMP_BACKWARD_NO_INTERRUPT)

#define IS_UNCONDITIONAL_JUMP_OPCODE(opcode) \
((opcode) == JUMP || \
(opcode) == JUMP_NO_INTERRUPT || \
(opcode) == JUMP_FORWARD || \
(opcode) == JUMP_BACKWARD || \
(opcode) == JUMP_BACKWARD_NO_INTERRUPT)

#define IS_SCOPE_EXIT_OPCODE(opcode) \
((opcode) == RETURN_VALUE || \
(opcode) == RETURN_CONST || \
(opcode) == RAISE_VARARGS || \
(opcode) == RERAISE)

#define IS_SUPERINSTRUCTION_OPCODE(opcode) \
((opcode) == LOAD_FAST__LOAD_FAST || \
(opcode) == LOAD_FAST__LOAD_CONST || \
(opcode) == LOAD_CONST__LOAD_FAST || \
(opcode) == STORE_FAST__LOAD_FAST || \
(opcode) == STORE_FAST__STORE_FAST)

#define IS_SCOPE_EXIT_OPCODE(opcode) \
((opcode) == RETURN_VALUE || \
(opcode) == RETURN_CONST || \
(opcode) == RAISE_VARARGS || \
(opcode) == RERAISE)

#define IS_SUPERINSTRUCTION_OPCODE(opcode) \
((opcode) == LOAD_FAST__LOAD_FAST || \
(opcode) == LOAD_FAST__LOAD_CONST || \
(opcode) == LOAD_CONST__LOAD_FAST || \
(opcode) == STORE_FAST__LOAD_FAST || \
(opcode) == STORE_FAST__STORE_FAST)


#define LOG_BITS_PER_INT 5
#define MASK_LOW_LOG_BITS 31

static inline int
is_bit_set_in_table(const uint32_t *table, int bitindex) {
/* Is the relevant bit set in the relevant word? */
/* 512 bits fit into 9 32-bits words.
* Word is indexed by (bitindex>>ln(size of int in bits)).
* Bit within word is the low bits of bitindex.
*/
if (bitindex >= 0 && bitindex < 512) {
uint32_t word = table[bitindex >> LOG_BITS_PER_INT];
return (word >> (bitindex & MASK_LOW_LOG_BITS)) & 1;
}
else {
return 0;
}
}

#undef LOG_BITS_PER_INT
#undef MASK_LOW_LOG_BITS

#define IS_RELATIVE_JUMP(opcode) (is_bit_set_in_table(_PyOpcode_RelativeJump, opcode))



#ifdef __cplusplus
}
#endif
#endif /* !Py_INTERNAL_OPCODE_UTILS_H */
2 changes: 2 additions & 0 deletions Makefile.pre.in
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Expand Up @@ -1702,6 +1702,8 @@ PYTHON_HEADERS= \
$(srcdir)/Include/internal/pycore_object_state.h \
$(srcdir)/Include/internal/pycore_obmalloc.h \
$(srcdir)/Include/internal/pycore_obmalloc_init.h \
$(srcdir)/Include/internal/pycore_opcode.h \
$(srcdir)/Include/internal/pycore_opcode_utils.h \
$(srcdir)/Include/internal/pycore_pathconfig.h \
$(srcdir)/Include/internal/pycore_pyarena.h \
$(srcdir)/Include/internal/pycore_pyerrors.h \
Expand Down
73 changes: 2 additions & 71 deletions Python/compile.c
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Original file line number Diff line number Diff line change
Expand Up @@ -33,6 +33,7 @@
#include "pycore_intrinsics.h"
#include "pycore_long.h" // _PyLong_GetZero()
#include "pycore_opcode.h" // _PyOpcode_Caches
#include "pycore_opcode_utils.h"
#include "pycore_pymem.h" // _PyMem_IsPtrFreed()
#include "pycore_symtable.h" // PySTEntryObject, _PyFuture_FromAST()

Expand Down Expand Up @@ -83,58 +84,6 @@
*/
#define MAX_ALLOWED_STACK_USE (STACK_USE_GUIDELINE * 100)


#define MAX_REAL_OPCODE 254

#define IS_WITHIN_OPCODE_RANGE(opcode) \
(((opcode) >= 0 && (opcode) <= MAX_REAL_OPCODE) || \
IS_PSEUDO_OPCODE(opcode))

#define IS_JUMP_OPCODE(opcode) \
is_bit_set_in_table(_PyOpcode_Jump, opcode)

#define IS_BLOCK_PUSH_OPCODE(opcode) \
((opcode) == SETUP_FINALLY || \
(opcode) == SETUP_WITH || \
(opcode) == SETUP_CLEANUP)

#define HAS_TARGET(opcode) \
(IS_JUMP_OPCODE(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))

/* opcodes which are not emitted in codegen stage, only by the assembler */
#define IS_ASSEMBLER_OPCODE(opcode) \
((opcode) == JUMP_FORWARD || \
(opcode) == JUMP_BACKWARD || \
(opcode) == JUMP_BACKWARD_NO_INTERRUPT)

#define IS_BACKWARDS_JUMP_OPCODE(opcode) \
((opcode) == JUMP_BACKWARD || \
(opcode) == JUMP_BACKWARD_NO_INTERRUPT)

#define IS_UNCONDITIONAL_JUMP_OPCODE(opcode) \
((opcode) == JUMP || \
(opcode) == JUMP_NO_INTERRUPT || \
(opcode) == JUMP_FORWARD || \
(opcode) == JUMP_BACKWARD || \
(opcode) == JUMP_BACKWARD_NO_INTERRUPT)

#define IS_SCOPE_EXIT_OPCODE(opcode) \
((opcode) == RETURN_VALUE || \
(opcode) == RETURN_CONST || \
(opcode) == RAISE_VARARGS || \
(opcode) == RERAISE)

#define IS_SUPERINSTRUCTION_OPCODE(opcode) \
((opcode) == LOAD_FAST__LOAD_FAST || \
(opcode) == LOAD_FAST__LOAD_CONST || \
(opcode) == LOAD_CONST__LOAD_FAST || \
(opcode) == STORE_FAST__LOAD_FAST || \
(opcode) == STORE_FAST__STORE_FAST)

#define IS_TOP_LEVEL_AWAIT(C) ( \
((C)->c_flags.cf_flags & PyCF_ALLOW_TOP_LEVEL_AWAIT) \
&& ((C)->u->u_ste->ste_type == ModuleBlock))
Expand Down Expand Up @@ -214,29 +163,11 @@ typedef struct exceptstack {
int depth;
} ExceptStack;

#define LOG_BITS_PER_INT 5
#define MASK_LOW_LOG_BITS 31

static inline int
is_bit_set_in_table(const uint32_t *table, int bitindex) {
/* Is the relevant bit set in the relevant word? */
/* 512 bits fit into 9 32-bits words.
* Word is indexed by (bitindex>>ln(size of int in bits)).
* Bit within word is the low bits of bitindex.
*/
if (bitindex >= 0 && bitindex < 512) {
uint32_t word = table[bitindex >> LOG_BITS_PER_INT];
return (word >> (bitindex & MASK_LOW_LOG_BITS)) & 1;
}
else {
return 0;
}
}

static inline int
is_relative_jump(struct cfg_instr *i)
{
return is_bit_set_in_table(_PyOpcode_RelativeJump, i->i_opcode);
return IS_RELATIVE_JUMP(i->i_opcode);
}

static inline int
Expand Down
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