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| author | Irit Katriel <1055913+iritkatriel@users.noreply.github.com> | 2022-09-01 20:36:47 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-09-01 20:36:47 (GMT) |
| commit | 4c72517cada147b215cf30ff8dac70ea0f08f1e0 (patch) | |
| tree | 1012522409ed719a8d8ba0b5eab4e5f3bce77bd6 /Doc/library/dis.rst | |
| parent | a91f25577c71ab8797a4b42f22c43bbaffc2604d (diff) | |
| download | cpython-4c72517cada147b215cf30ff8dac70ea0f08f1e0.zip cpython-4c72517cada147b215cf30ff8dac70ea0f08f1e0.tar.gz cpython-4c72517cada147b215cf30ff8dac70ea0f08f1e0.tar.bz2 | |
gh-93554: Conditional jump opcodes only jump forward (GH-96318)
Diffstat (limited to 'Doc/library/dis.rst')
| -rw-r--r-- | Doc/library/dis.rst | 56 |
1 files changed, 20 insertions, 36 deletions
diff --git a/Doc/library/dis.rst b/Doc/library/dis.rst index 691819f..47e4bf6 100644 --- a/Doc/library/dis.rst +++ b/Doc/library/dis.rst @@ -999,60 +999,48 @@ iterations of the loop. .. versionadded:: 3.11 -.. opcode:: POP_JUMP_FORWARD_IF_TRUE (delta) +.. opcode:: POP_JUMP_IF_TRUE (delta) If TOS is true, increments the bytecode counter by *delta*. TOS is popped. - .. versionadded:: 3.11 - - -.. opcode:: POP_JUMP_BACKWARD_IF_TRUE (delta) - - If TOS is true, decrements the bytecode counter by *delta*. TOS is popped. - - .. versionadded:: 3.11 + .. versionchanged:: 3.11 + The oparg is now a relative delta rather than an absolute target. + This opcode is a pseudo-instruction, replaced in final bytecode by + the directed versions (forward/backward). + .. versionchanged:: 3.12 + This is no longer a pseudo-instruction. -.. opcode:: POP_JUMP_FORWARD_IF_FALSE (delta) +.. opcode:: POP_JUMP_IF_FALSE (delta) If TOS is false, increments the bytecode counter by *delta*. TOS is popped. - .. versionadded:: 3.11 - - -.. opcode:: POP_JUMP_BACKWARD_IF_FALSE (delta) - - If TOS is false, decrements the bytecode counter by *delta*. TOS is popped. - - .. versionadded:: 3.11 + .. versionchanged:: 3.11 + The oparg is now a relative delta rather than an absolute target. + This opcode is a pseudo-instruction, replaced in final bytecode by + the directed versions (forward/backward). + .. versionchanged:: 3.12 + This is no longer a pseudo-instruction. -.. opcode:: POP_JUMP_FORWARD_IF_NOT_NONE (delta) +.. opcode:: POP_JUMP_IF_NOT_NONE (delta) If TOS is not ``None``, increments the bytecode counter by *delta*. TOS is popped. .. versionadded:: 3.11 - -.. opcode:: POP_JUMP_BACKWARD_IF_NOT_NONE (delta) - - If TOS is not ``None``, decrements the bytecode counter by *delta*. TOS is popped. - - .. versionadded:: 3.11 + .. versionchanged:: 3.12 + This is no longer a pseudo-instruction. -.. opcode:: POP_JUMP_FORWARD_IF_NONE (delta) +.. opcode:: POP_JUMP_IF_NONE (delta) If TOS is ``None``, increments the bytecode counter by *delta*. TOS is popped. .. versionadded:: 3.11 - -.. opcode:: POP_JUMP_BACKWARD_IF_NONE (delta) - - If TOS is ``None``, decrements the bytecode counter by *delta*. TOS is popped. - - .. versionadded:: 3.11 + .. versionchanged:: 3.12 + This is no longer a pseudo-instruction. .. opcode:: JUMP_IF_TRUE_OR_POP (delta) @@ -1433,10 +1421,6 @@ but are replaced by real opcodes or removed before bytecode is generated. .. opcode:: JUMP .. opcode:: JUMP_NO_INTERRUPT -.. opcode:: POP_JUMP_IF_FALSE -.. opcode:: POP_JUMP_IF_TRUE -.. opcode:: POP_JUMP_IF_NONE -.. opcode:: POP_JUMP_IF_NOT_NONE Undirected relative jump instructions which are replaced by their directed (forward/backward) counterparts by the assembler. |