clones/php-src
1
0
Fork 0
mirror of https://github.com/php/php-src.git synced 2024-09-22 02:17:32 +00:00
Code Issues Packages Projects Releases Wiki Activity

Replacel constant JMPZ/NZ/ZNZ by JMP or NOP

Browse Source
This commit is contained in:
Dmitry Stogov 2017-07-10 13:33:14 +03:00
parent 3253e61b66
commit 502002aa6e
1 changed files with 34 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
ext/opcache/Optimizer/zend_optimizer.c
View File

@ -256,7 +256,41 @@ int zend_optimizer_update_op1_const(zend_op_array *op_array,
zend_op *opline,
zval *val)
{
zend_op *target_opline;
switch (opline->opcode) {
case ZEND_JMPZ:
if (zend_is_true(val)) {
MAKE_NOP(opline);
} else {
opline->opcode = ZEND_JMP;
COPY_NODE(opline->op1, opline->op2);
opline->op2_type = IS_UNUSED;
}
zval_ptr_dtor_nogc(val);
return 1;
case ZEND_JMPNZ:
if (zend_is_true(val)) {
opline->opcode = ZEND_JMP;
COPY_NODE(opline->op1, opline->op2);
opline->op2_type = IS_UNUSED;
} else {
MAKE_NOP(opline);
}
zval_ptr_dtor_nogc(val);
return 1;
case ZEND_JMPZNZ:
if (zend_is_true(val)) {
target_opline = ZEND_OFFSET_TO_OPLINE(opline, opline->extended_value);
} else {
target_opline = ZEND_OP2_JMP_ADDR(opline);
}
ZEND_SET_OP_JMP_ADDR(opline, opline->op1, target_opline);
opline->op1_type = IS_UNUSED;
opline->extended_value = 0;
opline->opcode = ZEND_JMP;
zval_ptr_dtor_nogc(val);
return 1;
case ZEND_FREE:
MAKE_NOP(opline);
zval_ptr_dtor_nogc(val);