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Kaydet (Commit) 43ea47ff authored tarafından Raymond Hettinger's avatar Raymond Hettinger
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Move NOP to end of code transformation.

üst b86aa99e
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Showing with 7 additions and 3 deletions
Python/compile.c
Dosyayı görüntüle @ 43ea47ff
......@@ -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
......
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