diff options
| author | Jeffrey Yasskin <jyasskin@gmail.com> | 2009-02-28 19:03:21 (GMT) |
|---|---|---|
| committer | Jeffrey Yasskin <jyasskin@gmail.com> | 2009-02-28 19:03:21 (GMT) |
| commit | 68d68520061a5a4aa3437f8c74ba383b2da50280 (patch) | |
| tree | aaade0afac9b9369b58c5642e2635fa319f61c02 /Include/opcode.h | |
| parent | de28d6841e60d75ce7644ca527448f73376ec48e (diff) | |
| download | cpython-68d68520061a5a4aa3437f8c74ba383b2da50280.zip cpython-68d68520061a5a4aa3437f8c74ba383b2da50280.tar.gz cpython-68d68520061a5a4aa3437f8c74ba383b2da50280.tar.bz2 | |
Backport r69961 to trunk, replacing JUMP_IF_{TRUE,FALSE} with
POP_JUMP_IF_{TRUE,FALSE} and JUMP_IF_{TRUE,FALSE}_OR_POP. This avoids executing
a POP_TOP on each conditional and sometimes allows the peephole optimizer to
skip a JUMP_ABSOLUTE entirely. It speeds up list comprehensions significantly.
Diffstat (limited to 'Include/opcode.h')
| -rw-r--r-- | Include/opcode.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/Include/opcode.h b/Include/opcode.h index 5e6fba0..36a35dc 100644 --- a/Include/opcode.h +++ b/Include/opcode.h @@ -106,9 +106,12 @@ extern "C" { #define IMPORT_FROM 108 /* Index in name list */ #define JUMP_FORWARD 110 /* Number of bytes to skip */ -#define JUMP_IF_FALSE 111 /* "" */ -#define JUMP_IF_TRUE 112 /* "" */ -#define JUMP_ABSOLUTE 113 /* Target byte offset from beginning of code */ +#define JUMP_IF_FALSE_OR_POP 111 /* Target byte offset from beginning + of code */ +#define JUMP_IF_TRUE_OR_POP 112 /* "" */ +#define JUMP_ABSOLUTE 113 /* "" */ +#define POP_JUMP_IF_FALSE 114 /* "" */ +#define POP_JUMP_IF_TRUE 115 /* "" */ #define LOAD_GLOBAL 116 /* Index in name list */ |