Improve matching speed of patterns starting with + or * in JIT.
This commit is contained in:
parent
865b2d5f6e
commit
6f3776bd14
|
@ -1,6 +1,12 @@
|
|||
Change Log for PCRE2
|
||||
--------------------
|
||||
|
||||
Version 10.21 xx-xxx-xxxx
|
||||
-------------------------
|
||||
|
||||
1. Improve matching speed of patterns starting with + or * in JIT.
|
||||
|
||||
|
||||
Version 10.20 30-June-2015
|
||||
--------------------------
|
||||
|
||||
|
|
|
@ -381,11 +381,15 @@ typedef struct compiler_common {
|
|||
int control_head_ptr;
|
||||
/* Points to the last matched capture block index. */
|
||||
int capture_last_ptr;
|
||||
/* Fast forward skipping byte code pointer. */
|
||||
PCRE2_SPTR fast_forward_bc_ptr;
|
||||
/* Fast forward skipping local variable position. */
|
||||
int fast_forward_ptr;
|
||||
|
||||
/* Flipped and lower case tables. */
|
||||
const sljit_ub *fcc;
|
||||
sljit_sw lcc;
|
||||
/* Mode can be PCRE_STUDY_JIT_COMPILE and others. */
|
||||
/* Mode can be PCRE2_JIT_COMPLETE and others. */
|
||||
int mode;
|
||||
/* TRUE, when minlength is greater than 0. */
|
||||
BOOL might_be_empty;
|
||||
|
@ -921,6 +925,120 @@ while (cc < ccend)
|
|||
return TRUE;
|
||||
}
|
||||
|
||||
static void detect_fast_forward_skip(compiler_common *common, int *private_data_start)
|
||||
{
|
||||
PCRE2_SPTR cc = common->start;
|
||||
PCRE2_SPTR end;
|
||||
|
||||
/* Skip not repeated brackets. */
|
||||
while (TRUE)
|
||||
{
|
||||
switch(*cc)
|
||||
{
|
||||
case OP_SOD:
|
||||
case OP_SOM:
|
||||
case OP_SET_SOM:
|
||||
case OP_NOT_WORD_BOUNDARY:
|
||||
case OP_WORD_BOUNDARY:
|
||||
case OP_EODN:
|
||||
case OP_EOD:
|
||||
case OP_CIRC:
|
||||
case OP_CIRCM:
|
||||
case OP_DOLL:
|
||||
case OP_DOLLM:
|
||||
/* Zero width assertions. */
|
||||
cc++;
|
||||
continue;
|
||||
}
|
||||
|
||||
if (*cc != OP_BRA && *cc != OP_CBRA)
|
||||
break;
|
||||
|
||||
end = cc + GET(cc, 1);
|
||||
if (*end != OP_KET || PRIVATE_DATA(end) != 0)
|
||||
return;
|
||||
if (*cc == OP_CBRA)
|
||||
{
|
||||
if (common->optimized_cbracket[GET2(cc, 1 + LINK_SIZE)] == 0)
|
||||
return;
|
||||
cc += IMM2_SIZE;
|
||||
}
|
||||
cc += 1 + LINK_SIZE;
|
||||
}
|
||||
|
||||
common->fast_forward_bc_ptr = cc;
|
||||
|
||||
switch(*cc)
|
||||
{
|
||||
case OP_TYPESTAR:
|
||||
case OP_TYPEMINSTAR:
|
||||
case OP_TYPEPLUS:
|
||||
case OP_TYPEMINPLUS:
|
||||
case OP_TYPEPOSSTAR:
|
||||
case OP_TYPEPOSPLUS:
|
||||
if (cc[1] == OP_ANYNL || cc[1] == OP_EXTUNI)
|
||||
break;
|
||||
/* Fall through. */
|
||||
|
||||
case OP_STAR:
|
||||
case OP_MINSTAR:
|
||||
case OP_PLUS:
|
||||
case OP_MINPLUS:
|
||||
case OP_POSSTAR:
|
||||
case OP_POSPLUS:
|
||||
|
||||
case OP_STARI:
|
||||
case OP_MINSTARI:
|
||||
case OP_PLUSI:
|
||||
case OP_MINPLUSI:
|
||||
case OP_POSSTARI:
|
||||
case OP_POSPLUSI:
|
||||
|
||||
case OP_NOTSTAR:
|
||||
case OP_NOTMINSTAR:
|
||||
case OP_NOTPLUS:
|
||||
case OP_NOTMINPLUS:
|
||||
case OP_NOTPOSSTAR:
|
||||
case OP_NOTPOSPLUS:
|
||||
|
||||
case OP_NOTSTARI:
|
||||
case OP_NOTMINSTARI:
|
||||
case OP_NOTPLUSI:
|
||||
case OP_NOTMINPLUSI:
|
||||
case OP_NOTPOSSTARI:
|
||||
case OP_NOTPOSPLUSI:
|
||||
|
||||
common->fast_forward_ptr = *private_data_start;
|
||||
*private_data_start += sizeof(sljit_sw);
|
||||
return;
|
||||
|
||||
case OP_CLASS:
|
||||
case OP_NCLASS:
|
||||
#if defined SUPPORT_UNICODE || PCRE2_CODE_UNIT_WIDTH != 8
|
||||
case OP_XCLASS:
|
||||
cc += (*cc == OP_XCLASS) ? GET(cc, 1) : (int)(1 + (32 / sizeof(PCRE2_UCHAR)));
|
||||
#else
|
||||
cc += (int)(1 + (32 / sizeof(PCRE2_UCHAR)));
|
||||
#endif
|
||||
|
||||
switch(*cc)
|
||||
{
|
||||
case OP_CRSTAR:
|
||||
case OP_CRMINSTAR:
|
||||
case OP_CRPLUS:
|
||||
case OP_CRMINPLUS:
|
||||
case OP_CRPOSSTAR:
|
||||
case OP_CRPOSPLUS:
|
||||
common->fast_forward_ptr = *private_data_start;
|
||||
*private_data_start += sizeof(sljit_sw);
|
||||
return;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
common->fast_forward_bc_ptr = NULL;
|
||||
}
|
||||
|
||||
static int get_class_iterator_size(PCRE2_SPTR cc)
|
||||
{
|
||||
sljit_ui min;
|
||||
|
@ -8082,6 +8200,7 @@ backtrack_common *backtrack;
|
|||
PCRE2_UCHAR opcode;
|
||||
PCRE2_UCHAR type;
|
||||
sljit_ui max = 0, exact;
|
||||
BOOL fast_forward = (cc == common->fast_forward_bc_ptr);
|
||||
BOOL charpos_enabled;
|
||||
PCRE2_UCHAR charpos_char;
|
||||
unsigned int charpos_othercasebit;
|
||||
|
@ -8114,6 +8233,7 @@ else
|
|||
/* Handle fixed part first. */
|
||||
if (exact > 1)
|
||||
{
|
||||
SLJIT_ASSERT(!fast_forward);
|
||||
if (common->mode == PCRE2_JIT_COMPLETE
|
||||
#ifdef SUPPORT_UNICODE
|
||||
&& !common->utf
|
||||
|
@ -8144,9 +8264,12 @@ switch(opcode)
|
|||
{
|
||||
case OP_STAR:
|
||||
case OP_UPTO:
|
||||
SLJIT_ASSERT(!fast_forward || opcode == OP_STAR);
|
||||
|
||||
if (type == OP_ANYNL || type == OP_EXTUNI)
|
||||
{
|
||||
SLJIT_ASSERT(private_data_ptr == 0);
|
||||
SLJIT_ASSERT(!fast_forward);
|
||||
|
||||
allocate_stack(common, 2);
|
||||
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), STR_PTR, 0);
|
||||
|
@ -8228,6 +8351,8 @@ switch(opcode)
|
|||
add_jump(compiler, &backtrack->topbacktracks, JUMP(SLJIT_ZERO));
|
||||
}
|
||||
compile_char1_matchingpath(common, type, cc, &backtrack->topbacktracks, FALSE);
|
||||
if (fast_forward)
|
||||
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->fast_forward_ptr, STR_PTR, 0);
|
||||
JUMPHERE(jump);
|
||||
|
||||
detect_partial_match(common, &backtrack->topbacktracks);
|
||||
|
@ -8249,6 +8374,8 @@ switch(opcode)
|
|||
/* Search the last instance of charpos_char. */
|
||||
label = LABEL();
|
||||
compile_char1_matchingpath(common, type, cc, &no_match, FALSE);
|
||||
if (fast_forward)
|
||||
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->fast_forward_ptr, STR_PTR, 0);
|
||||
detect_partial_match(common, &no_match);
|
||||
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(0));
|
||||
if (charpos_othercasebit != 0)
|
||||
|
@ -8304,6 +8431,8 @@ switch(opcode)
|
|||
|
||||
set_jumps(no_match, LABEL());
|
||||
OP1(SLJIT_MOV, STR_PTR, 0, base, offset0);
|
||||
if (fast_forward)
|
||||
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->fast_forward_ptr, STR_PTR, 0);
|
||||
}
|
||||
#endif
|
||||
else
|
||||
|
@ -8331,6 +8460,8 @@ switch(opcode)
|
|||
OP2(SLJIT_SUB, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
|
||||
set_jumps(no_match, LABEL());
|
||||
OP1(SLJIT_MOV, base, offset0, STR_PTR, 0);
|
||||
if (fast_forward)
|
||||
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->fast_forward_ptr, STR_PTR, 0);
|
||||
}
|
||||
}
|
||||
BACKTRACK_AS(char_iterator_backtrack)->matchingpath = LABEL();
|
||||
|
@ -8341,9 +8472,12 @@ switch(opcode)
|
|||
allocate_stack(common, 1);
|
||||
OP1(SLJIT_MOV, base, offset0, STR_PTR, 0);
|
||||
BACKTRACK_AS(char_iterator_backtrack)->matchingpath = LABEL();
|
||||
if (fast_forward)
|
||||
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->fast_forward_ptr, STR_PTR, 0);
|
||||
break;
|
||||
|
||||
case OP_MINUPTO:
|
||||
SLJIT_ASSERT(!fast_forward);
|
||||
if (private_data_ptr == 0)
|
||||
allocate_stack(common, 2);
|
||||
OP1(SLJIT_MOV, base, offset0, STR_PTR, 0);
|
||||
|
@ -8353,6 +8487,7 @@ switch(opcode)
|
|||
|
||||
case OP_QUERY:
|
||||
case OP_MINQUERY:
|
||||
SLJIT_ASSERT(!fast_forward);
|
||||
if (private_data_ptr == 0)
|
||||
allocate_stack(common, 1);
|
||||
OP1(SLJIT_MOV, base, offset0, STR_PTR, 0);
|
||||
|
@ -8375,6 +8510,8 @@ switch(opcode)
|
|||
JUMPTO(SLJIT_JUMP, label);
|
||||
set_jumps(no_match, LABEL());
|
||||
OP1(SLJIT_MOV, STR_PTR, 0, tmp_base, tmp_offset);
|
||||
if (fast_forward)
|
||||
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->fast_forward_ptr, STR_PTR, 0);
|
||||
break;
|
||||
}
|
||||
#endif
|
||||
|
@ -8385,9 +8522,12 @@ switch(opcode)
|
|||
set_jumps(no_char1_match, LABEL());
|
||||
OP2(SLJIT_SUB, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
|
||||
set_jumps(no_match, LABEL());
|
||||
if (fast_forward)
|
||||
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->fast_forward_ptr, STR_PTR, 0);
|
||||
break;
|
||||
|
||||
case OP_POSUPTO:
|
||||
SLJIT_ASSERT(!fast_forward);
|
||||
#if defined SUPPORT_UNICODE && PCRE2_CODE_UNIT_WIDTH != 32
|
||||
if (common->utf)
|
||||
{
|
||||
|
@ -8416,6 +8556,7 @@ switch(opcode)
|
|||
break;
|
||||
|
||||
case OP_POSQUERY:
|
||||
SLJIT_ASSERT(!fast_forward);
|
||||
OP1(SLJIT_MOV, tmp_base, tmp_offset, STR_PTR, 0);
|
||||
compile_char1_matchingpath(common, type, cc, &no_match, TRUE);
|
||||
OP1(SLJIT_MOV, tmp_base, tmp_offset, STR_PTR, 0);
|
||||
|
@ -10251,6 +10392,9 @@ memset(common->private_data_ptrs, 0, total_length * sizeof(sljit_si));
|
|||
|
||||
private_data_size = common->cbra_ptr + (re->top_bracket + 1) * sizeof(sljit_sw);
|
||||
set_private_data_ptrs(common, &private_data_size, ccend);
|
||||
if ((re->overall_options & PCRE2_ANCHORED) == 0 && (re->overall_options & PCRE2_NO_START_OPTIMIZE) == 0)
|
||||
detect_fast_forward_skip(common, &private_data_size);
|
||||
|
||||
if (private_data_size > SLJIT_MAX_LOCAL_SIZE)
|
||||
{
|
||||
SLJIT_FREE(common->private_data_ptrs, allocator_data);
|
||||
|
@ -10335,6 +10479,8 @@ OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(0), STR_PTR, 0);
|
|||
OP1(SLJIT_MOV, COUNT_MATCH, 0, SLJIT_MEM1(SLJIT_SP), LIMIT_MATCH);
|
||||
if (common->capture_last_ptr != 0)
|
||||
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->capture_last_ptr, SLJIT_IMM, 0);
|
||||
if (common->fast_forward_ptr != 0)
|
||||
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->fast_forward_ptr, STR_PTR, 0);
|
||||
|
||||
if (common->start_ptr != OVECTOR(0))
|
||||
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->start_ptr, STR_PTR, 0);
|
||||
|
@ -10419,6 +10565,9 @@ if ((re->overall_options & PCRE2_ANCHORED) == 0 && (re->overall_options & PCRE2_
|
|||
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), common->first_line_end);
|
||||
}
|
||||
|
||||
if (common->fast_forward_ptr != 0)
|
||||
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(SLJIT_SP), common->fast_forward_ptr);
|
||||
else
|
||||
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(SLJIT_SP), common->start_ptr);
|
||||
|
||||
if ((re->overall_options & PCRE2_ANCHORED) == 0)
|
||||
|
@ -10464,6 +10613,7 @@ if (common->might_be_empty)
|
|||
JUMPTO(SLJIT_JUMP, empty_match_backtrack_label);
|
||||
}
|
||||
|
||||
common->fast_forward_bc_ptr = NULL;
|
||||
common->currententry = common->entries;
|
||||
common->local_exit = TRUE;
|
||||
quit_label = common->quit_label;
|
||||
|
|
Loading…
Reference in New Issue