diff options
| author | Raymond Hettinger <python@rcn.com> | 2004-06-24 09:25:39 (GMT) |
|---|---|---|
| committer | Raymond Hettinger <python@rcn.com> | 2004-06-24 09:25:39 (GMT) |
| commit | 43ea47ff06295924c4f7512417370f988d1ea7da (patch) | |
| tree | b7a9076c6b9e3b86ec215c723fca16a423f8c260 /Python/compile.c | |
| parent | b86aa99eb99bb95629a57dee9bebe69317455e2d (diff) | |
| download | cpython-43ea47ff06295924c4f7512417370f988d1ea7da.zip cpython-43ea47ff06295924c4f7512417370f988d1ea7da.tar.gz cpython-43ea47ff06295924c4f7512417370f988d1ea7da.tar.bz2 | |
Move NOP to end of code transformation.
Diffstat (limited to 'Python/compile.c')
| -rw-r--r-- | Python/compile.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/Python/compile.c b/Python/compile.c index ab4b533..16328b5 100644 --- a/Python/compile.c +++ b/Python/compile.c @@ -392,7 +392,8 @@ optimize_code(PyObject *code, PyObject* consts) opcode = codestr[i]; switch (opcode) { - /* Replace UNARY_NOT JUMP_IF_FALSE with NOP JUMP_IF_TRUE */ + /* Replace UNARY_NOT JUMP_IF_FALSE POP_TOP with + with JUMP_IF_TRUE POP_TOP NOP */ case UNARY_NOT: if (codestr[i+1] != JUMP_IF_FALSE || codestr[i+4] != POP_TOP || @@ -401,8 +402,11 @@ optimize_code(PyObject *code, PyObject* consts) tgt = GETJUMPTGT(codestr, (i+1)); if (codestr[tgt] != POP_TOP) continue; - codestr[i] = NOP; - codestr[i+1] = JUMP_IF_TRUE; + j = GETARG(codestr, i+1) + 1; + codestr[i] = JUMP_IF_TRUE; + SETARG(codestr, i, j); + codestr[i+3] = POP_TOP; + codestr[i+4] = NOP; break; /* not a is b --> a is not b |