/src/php-src/Zend/Optimizer/optimize_func_calls.c

Source
/*
   +----------------------------------------------------------------------+
   | Zend OPcache                                                         |
   +----------------------------------------------------------------------+
   | Copyright © The PHP Group and Contributors.                          |
   +----------------------------------------------------------------------+
   | This source file is subject to the Modified BSD License that is      |
   | bundled with this package in the file LICENSE, and is available      |
   | through the World Wide Web at <https://www.php.net/license/>.        |
   |                                                                      |
   | SPDX-License-Identifier: BSD-3-Clause                                |
   +----------------------------------------------------------------------+
   | Authors: Dmitry Stogov <dmitry@php.net>                              |
   |          Xinchen Hui <laruence@php.net>                              |
   +----------------------------------------------------------------------+
*/

/* pass 4
 * - optimize INIT_FCALL_BY_NAME to DO_FCALL
 */

#include "Optimizer/zend_optimizer.h"
#include "Optimizer/zend_optimizer_internal.h"
#include "zend_API.h"
#include "zend_constants.h"
#include "zend_execute.h"
#include "zend_vm.h"

typedef struct _optimizer_call_info {
  zend_function *func;
  zend_op       *opline;
  zend_op       *last_check_func_arg_opline;
  bool      is_prototype;
  bool      try_inline;
  uint32_t       func_arg_num;
} optimizer_call_info;

static void zend_delete_call_instructions(const zend_op_array *op_array, zend_op *opline)
{
  int call = 0;

  while (1) {
    switch (opline->opcode) {
      case ZEND_INIT_FCALL_BY_NAME:
      case ZEND_INIT_NS_FCALL_BY_NAME:
      case ZEND_INIT_STATIC_METHOD_CALL:
      case ZEND_INIT_METHOD_CALL:
      case ZEND_INIT_FCALL:
      case ZEND_INIT_PARENT_PROPERTY_HOOK_CALL:
        if (call == 0) {
          MAKE_NOP(opline);
          return;
        }
        ZEND_FALLTHROUGH;
      case ZEND_NEW:
      case ZEND_INIT_DYNAMIC_CALL:
      case ZEND_INIT_USER_CALL:
        call--;
        break;
      case ZEND_DO_FCALL:
      case ZEND_DO_ICALL:
      case ZEND_DO_UCALL:
      case ZEND_DO_FCALL_BY_NAME:
      case ZEND_CALLABLE_CONVERT:
      case ZEND_CALLABLE_CONVERT_PARTIAL:
        call++;
        break;
      case ZEND_SEND_VAL:
      case ZEND_SEND_VAR:
        if (call == 0) {
          zend_optimizer_convert_to_free_op1(op_array, opline);
        }
        break;
    }
    opline--;
  }
}

static void zend_try_inline_call(zend_op_array *op_array, const zend_op *fcall, zend_op *opline, const zend_function *func)
{
  const uint32_t no_discard = RETURN_VALUE_USED(opline) ? 0 : ZEND_ACC_NODISCARD;

  if (func->type == ZEND_USER_FUNCTION
   && !(func->op_array.fn_flags & (ZEND_ACC_ABSTRACT|ZEND_ACC_HAS_TYPE_HINTS|ZEND_ACC_DEPRECATED|no_discard))
    /* TODO: function copied from trait may be inconsistent ??? */
   && !(func->op_array.fn_flags & (ZEND_ACC_TRAIT_CLONE))
   && fcall->extended_value >= func->op_array.required_num_args
   && func->op_array.opcodes[func->op_array.num_args].opcode == ZEND_RETURN) {

    zend_op *ret_opline = func->op_array.opcodes + func->op_array.num_args;

    if (ret_opline->op1_type == IS_CONST) {
      uint32_t i, num_args = func->op_array.num_args;
      num_args += (func->op_array.fn_flags & ZEND_ACC_VARIADIC) != 0;

      if (fcall->opcode == ZEND_INIT_STATIC_METHOD_CALL
          && !(func->op_array.fn_flags & ZEND_ACC_STATIC)) {
        /* Don't inline static call to instance method. */
        return;
      }

      for (i = 0; i < num_args; i++) {
        /* Don't inline functions with by-reference arguments. This would require
         * correct handling of INDIRECT arguments. */
        if (ZEND_ARG_SEND_MODE(&func->op_array.arg_info[i])) {
          return;
        }
      }

      if (fcall->extended_value < func->op_array.num_args) {
        /* don't inline functions with named constants in default arguments */
        i = fcall->extended_value;

        do {
          if (Z_TYPE_P(CRT_CONSTANT_EX(&func->op_array, &func->op_array.opcodes[i], func->op_array.opcodes[i].op2)) == IS_CONSTANT_AST) {
            return;
          }
          i++;
        } while (i < func->op_array.num_args);
      }

      if (RETURN_VALUE_USED(opline)) {
        zval zv;

        ZVAL_COPY(&zv, CRT_CONSTANT_EX(&func->op_array, ret_opline, ret_opline->op1));
        opline->opcode = ZEND_QM_ASSIGN;
        opline->op1_type = IS_CONST;
        opline->op1.constant = zend_optimizer_add_literal(op_array, &zv);
        SET_UNUSED(opline->op2);
      } else {
        MAKE_NOP(opline);
      }

      zend_delete_call_instructions(op_array, opline-1);
    }
  }
}

/* arg_num is 1-based here, to match SEND encoding. */
static bool has_known_send_mode(const optimizer_call_info *info, uint32_t arg_num)
{
  if (!info->func) {
    return false;
  }

  /* For prototype functions we should not make assumptions about arguments that are not part of
   * the signature: And inheriting method can add an optional by-ref argument. */
  return !info->is_prototype
    || arg_num <= info->func->common.num_args
    || (info->func->common.fn_flags & ZEND_ACC_VARIADIC);
}

void zend_optimize_func_calls(zend_op_array *op_array, zend_optimizer_ctx *ctx)
{
  zend_op *opline = op_array->opcodes;
  const zend_op *end = opline + op_array->last;
  int call = 0;
  void *checkpoint;
  optimizer_call_info *call_stack;

  if (op_array->last < 2) {
    return;
  }

  checkpoint = zend_arena_checkpoint(ctx->arena);
  call_stack = zend_arena_calloc(&ctx->arena, op_array->last / 2, sizeof(optimizer_call_info));
  while (opline < end) {
    switch (opline->opcode) {
      case ZEND_INIT_FCALL_BY_NAME:
      case ZEND_INIT_NS_FCALL_BY_NAME:
      case ZEND_INIT_STATIC_METHOD_CALL:
      case ZEND_INIT_METHOD_CALL:
      case ZEND_INIT_FCALL:
      case ZEND_NEW:
      case ZEND_INIT_PARENT_PROPERTY_HOOK_CALL:
        /* The argument passing optimizations are valid for prototypes as well,
         * as inheritance cannot change between ref <-> non-ref arguments. */
        call_stack[call].func = zend_optimizer_get_called_func(
          ctx->script, op_array, opline, &call_stack[call].is_prototype);
        call_stack[call].try_inline =
          !call_stack[call].is_prototype
          && opline->opcode != ZEND_NEW
          && opline->opcode != ZEND_INIT_PARENT_PROPERTY_HOOK_CALL;
        ZEND_FALLTHROUGH;
      case ZEND_INIT_DYNAMIC_CALL:
      case ZEND_INIT_USER_CALL:
        call_stack[call].opline = opline;
        call_stack[call].func_arg_num = (uint32_t)-1;
        call++;
        break;
      case ZEND_DO_FCALL:
      case ZEND_DO_ICALL:
      case ZEND_DO_UCALL:
      case ZEND_DO_FCALL_BY_NAME:
      case ZEND_CALLABLE_CONVERT:
      case ZEND_CALLABLE_CONVERT_PARTIAL:
        call--;
        if (call_stack[call].func && call_stack[call].opline) {
          zend_op *fcall = call_stack[call].opline;

          if (fcall->opcode == ZEND_INIT_FCALL) {
            /* nothing to do */
          } else if (fcall->opcode == ZEND_INIT_FCALL_BY_NAME) {
            fcall->opcode = ZEND_INIT_FCALL;
            fcall->op1.num = zend_vm_calc_used_stack(fcall->extended_value, call_stack[call].func);
            literal_dtor(&ZEND_OP2_LITERAL(fcall));
            fcall->op2.constant = fcall->op2.constant + 1;
          } else if (fcall->opcode == ZEND_INIT_NS_FCALL_BY_NAME) {
            fcall->opcode = ZEND_INIT_FCALL;
            fcall->op1.num = zend_vm_calc_used_stack(fcall->extended_value, call_stack[call].func);
            literal_dtor(&op_array->literals[fcall->op2.constant]);
            literal_dtor(&op_array->literals[fcall->op2.constant + 2]);
            fcall->op2.constant = fcall->op2.constant + 1;
          } else if (fcall->opcode == ZEND_INIT_STATIC_METHOD_CALL
              || fcall->opcode == ZEND_INIT_METHOD_CALL
              || fcall->opcode == ZEND_INIT_PARENT_PROPERTY_HOOK_CALL
              || fcall->opcode == ZEND_NEW) {
            /* We don't have specialized opcodes for this, do nothing */
          } else {
            ZEND_UNREACHABLE();
          }

          /* If the INIT opcode changed the DO opcode can also change to
           * a more optimized one.
           *
           * At this point we also know whether or not the result of
           * the DO opcode is used, allowing to optimize calls to
           * ZEND_ACC_NODISCARD functions. */
          if (opline->opcode != ZEND_CALLABLE_CONVERT && opline->opcode != ZEND_CALLABLE_CONVERT_PARTIAL) {
            opline->opcode = zend_get_call_op(fcall, call_stack[call].func, !RESULT_UNUSED(opline));
          }

          if ((ZEND_OPTIMIZER_PASS_16 & ctx->optimization_level)
              && call_stack[call].try_inline
              && opline->opcode != ZEND_CALLABLE_CONVERT
              && opline->opcode != ZEND_CALLABLE_CONVERT_PARTIAL) {
            zend_try_inline_call(op_array, fcall, opline, call_stack[call].func);
          }
        }
        call_stack[call].func = NULL;
        call_stack[call].opline = NULL;
        call_stack[call].try_inline = false;
        call_stack[call].func_arg_num = (uint32_t)-1;
        break;
      case ZEND_FETCH_FUNC_ARG:
      case ZEND_FETCH_STATIC_PROP_FUNC_ARG:
      case ZEND_FETCH_OBJ_FUNC_ARG:
      case ZEND_FETCH_DIM_FUNC_ARG:
        if (call_stack[call - 1].func_arg_num != (uint32_t)-1
            && call_stack[call - 1].last_check_func_arg_opline != NULL
            && has_known_send_mode(&call_stack[call - 1], call_stack[call - 1].func_arg_num)) {
          if (ARG_SHOULD_BE_SENT_BY_REF(call_stack[call - 1].func, call_stack[call - 1].func_arg_num)) {
            /* There's no TMP specialization for FETCH_OBJ_W/FETCH_DIM_W. Avoid
             * converting it and error at runtime in the FUNC_ARG variant. */
            if ((opline->opcode == ZEND_FETCH_OBJ_FUNC_ARG || opline->opcode == ZEND_FETCH_DIM_FUNC_ARG)
             && opline->op1_type == IS_TMP_VAR) {
              /* Don't remove the associated CHECK_FUNC_ARG opcode. */
              call_stack[call - 1].last_check_func_arg_opline = NULL;
              break;
            }
            if (opline->opcode != ZEND_FETCH_STATIC_PROP_FUNC_ARG) {
              opline->opcode -= 9;
            } else {
              opline->opcode = ZEND_FETCH_STATIC_PROP_W;
            }
          } else {
            if (opline->opcode == ZEND_FETCH_DIM_FUNC_ARG
                && opline->op2_type == IS_UNUSED) {
              /* FETCH_DIM_FUNC_ARG supports UNUSED op2, while FETCH_DIM_R does not.
               * Performing the replacement would create an invalid opcode. */
              call_stack[call - 1].try_inline = false;
              /* Don't remove the associated CHECK_FUNC_ARG opcode. */
              call_stack[call - 1].last_check_func_arg_opline = NULL;
              break;
            }

            if (opline->opcode != ZEND_FETCH_STATIC_PROP_FUNC_ARG) {
              opline->opcode -= 12;
            } else {
              opline->opcode = ZEND_FETCH_STATIC_PROP_R;
            }
          }
        }
        break;
      case ZEND_SEND_VAL_EX:
        if (opline->op2_type == IS_CONST) {
          call_stack[call - 1].try_inline = false;
          break;
        }

        if (has_known_send_mode(&call_stack[call - 1], opline->op2.num)) {
          if (!ARG_MUST_BE_SENT_BY_REF(call_stack[call - 1].func, opline->op2.num)) {
            opline->opcode = ZEND_SEND_VAL;
          }
        }
        break;
      case ZEND_CHECK_FUNC_ARG:
        if (opline->op2_type == IS_CONST) {
          call_stack[call - 1].try_inline = false;
          call_stack[call - 1].func_arg_num = (uint32_t)-1;
          break;
        }

        if (has_known_send_mode(&call_stack[call - 1], opline->op2.num)) {
          call_stack[call - 1].func_arg_num = opline->op2.num;
          call_stack[call - 1].last_check_func_arg_opline = opline;
        }
        break;
      case ZEND_SEND_FUNC_ARG:
        /* Don't transform SEND_FUNC_ARG if any FETCH opcodes weren't transformed. */
        if (call_stack[call - 1].last_check_func_arg_opline == NULL) {
          if (opline->op2_type == IS_CONST) {
            call_stack[call - 1].try_inline = false;
          }
          break;
        }
        MAKE_NOP(call_stack[call - 1].last_check_func_arg_opline);
        call_stack[call - 1].last_check_func_arg_opline = NULL;
        ZEND_FALLTHROUGH;
      case ZEND_SEND_VAR_EX:
        if (opline->op2_type == IS_CONST) {
          call_stack[call - 1].try_inline = false;
          break;
        }

        if (has_known_send_mode(&call_stack[call - 1], opline->op2.num)) {
          call_stack[call - 1].func_arg_num = (uint32_t)-1;
          if (ARG_SHOULD_BE_SENT_BY_REF(call_stack[call - 1].func, opline->op2.num)) {
            opline->opcode = ZEND_SEND_REF;
          } else {
            opline->opcode = ZEND_SEND_VAR;
          }
        }
        break;
      case ZEND_SEND_VAR_NO_REF_EX:
        if (opline->op2_type == IS_CONST) {
          call_stack[call - 1].try_inline = false;
          break;
        }

        if (has_known_send_mode(&call_stack[call - 1], opline->op2.num)) {
          if (ARG_MUST_BE_SENT_BY_REF(call_stack[call - 1].func, opline->op2.num)) {
            opline->opcode = ZEND_SEND_VAR_NO_REF;
          } else if (ARG_MAY_BE_SENT_BY_REF(call_stack[call - 1].func, opline->op2.num)) {
            opline->opcode = ZEND_SEND_VAL;
          } else {
            opline->opcode = ZEND_SEND_VAR;
          }
        }
        break;
      case ZEND_SEND_VAL:
      case ZEND_SEND_VAR:
      case ZEND_SEND_REF:
        if (opline->op2_type == IS_CONST) {
          call_stack[call - 1].try_inline = false;
          break;
        }
        break;
      case ZEND_SEND_UNPACK:
      case ZEND_SEND_USER:
      case ZEND_SEND_ARRAY:
        call_stack[call - 1].try_inline = false;
        break;
      default:
        break;
    }
    opline++;
  }

  zend_arena_release(&ctx->arena, checkpoint);
}

Coverage Report

Created: 2026-10-28 06:20

Line	Count	Source
1		/*
2		+----------------------------------------------------------------------+
3		\| Zend OPcache \|
4		+----------------------------------------------------------------------+
5		\| Copyright © The PHP Group and Contributors. \|
6		+----------------------------------------------------------------------+
7		\| This source file is subject to the Modified BSD License that is \|
8		\| bundled with this package in the file LICENSE, and is available \|
9		\| through the World Wide Web at <https://www.php.net/license/>. \|
10		\| \|
11		\| SPDX-License-Identifier: BSD-3-Clause \|
12		+----------------------------------------------------------------------+
13		\| Authors: Dmitry Stogov <dmitry@php.net> \|
14		\| Xinchen Hui <laruence@php.net> \|
15		+----------------------------------------------------------------------+
16		*/
17
18		/* pass 4
19		* - optimize INIT_FCALL_BY_NAME to DO_FCALL
20		*/
21
22		#include "Optimizer/zend_optimizer.h"
23		#include "Optimizer/zend_optimizer_internal.h"
24		#include "zend_API.h"
25		#include "zend_constants.h"
26		#include "zend_execute.h"
27		#include "zend_vm.h"
28
29		typedef struct _optimizer_call_info {
30		zend_function *func;
31		zend_op *opline;
32		zend_op *last_check_func_arg_opline;
33		bool is_prototype;
34		bool try_inline;
35		uint32_t func_arg_num;
36		} optimizer_call_info;
37
38		static void zend_delete_call_instructions(const zend_op_array op_array, zend_op opline)
39	20	{
40	20	int call = 0;
41
42	50	while (1) {
43	50	switch (opline->opcode) {
44	0	case ZEND_INIT_FCALL_BY_NAME:
45	0	case ZEND_INIT_NS_FCALL_BY_NAME:
46	0	case ZEND_INIT_STATIC_METHOD_CALL:
47	0	case ZEND_INIT_METHOD_CALL:
48	20	case ZEND_INIT_FCALL:
49	20	case ZEND_INIT_PARENT_PROPERTY_HOOK_CALL:
50	20	if (call == 0) {
51	20	MAKE_NOP(opline);
52	20	return;
53	20	}
54	0	ZEND_FALLTHROUGH;
55	0	case ZEND_NEW:
56	4	case ZEND_INIT_DYNAMIC_CALL:
57	4	case ZEND_INIT_USER_CALL:
58	4	call--;
59	4	break;
60	0	case ZEND_DO_FCALL:
61	0	case ZEND_DO_ICALL:
62	0	case ZEND_DO_UCALL:
63	0	case ZEND_DO_FCALL_BY_NAME:
64	4	case ZEND_CALLABLE_CONVERT:
65	4	case ZEND_CALLABLE_CONVERT_PARTIAL:
66	4	call++;
67	4	break;
68	10	case ZEND_SEND_VAL:
69	16	case ZEND_SEND_VAR:
70	16	if (call == 0) {
71	16	zend_optimizer_convert_to_free_op1(op_array, opline);
72	16	}
73	16	break;
74	50	}
75	30	opline--;
76	30	}
77	20	}
78
79		static void zend_try_inline_call(zend_op_array op_array, const zend_op fcall, zend_op opline, const zend_function func)
80	1.84k	{
81	1.84k	const uint32_t no_discard = RETURN_VALUE_USED(opline) ? 0 : ZEND_ACC_NODISCARD;
82
83	1.84k	if (func->type == ZEND_USER_FUNCTION
84	152	&& !(func->op_array.fn_flags & (ZEND_ACC_ABSTRACT\|ZEND_ACC_HAS_TYPE_HINTS\|ZEND_ACC_DEPRECATED\|no_discard))
85		/* TODO: function copied from trait may be inconsistent ??? */
86	140	&& !(func->op_array.fn_flags & (ZEND_ACC_TRAIT_CLONE))
87	140	&& fcall->extended_value >= func->op_array.required_num_args
88	138	&& func->op_array.opcodes[func->op_array.num_args].opcode == ZEND_RETURN) {
89
90	22	zend_op *ret_opline = func->op_array.opcodes + func->op_array.num_args;
91
92	22	if (ret_opline->op1_type == IS_CONST) {
93	22	uint32_t i, num_args = func->op_array.num_args;
94	22	num_args += (func->op_array.fn_flags & ZEND_ACC_VARIADIC) != 0;
95
96	22	if (fcall->opcode == ZEND_INIT_STATIC_METHOD_CALL
97	0	&& !(func->op_array.fn_flags & ZEND_ACC_STATIC)) {
98		/* Don't inline static call to instance method. */
99	0	return;
100	0	}
101
102	38	for (i = 0; i < num_args; i++) {
103		/* Don't inline functions with by-reference arguments. This would require
104		* correct handling of INDIRECT arguments. */
105	16	if (ZEND_ARG_SEND_MODE(&func->op_array.arg_info[i])) {
106	0	return;
107	0	}
108	16	}
109
110	22	if (fcall->extended_value < func->op_array.num_args) {
111		/* don't inline functions with named constants in default arguments */
112	2	i = fcall->extended_value;
113
114	2	do {
115	2	if (Z_TYPE_P(CRT_CONSTANT_EX(&func->op_array, &func->op_array.opcodes[i], func->op_array.opcodes[i].op2)) == IS_CONSTANT_AST) {
116	2	return;
117	2	}
118	0	i++;
119	0	} while (i < func->op_array.num_args);
120	2	}
121
122	20	if (RETURN_VALUE_USED(opline)) {
123	10	zval zv;
124
125	10	ZVAL_COPY(&zv, CRT_CONSTANT_EX(&func->op_array, ret_opline, ret_opline->op1));
126	10	opline->opcode = ZEND_QM_ASSIGN;
127	10	opline->op1_type = IS_CONST;
128	10	opline->op1.constant = zend_optimizer_add_literal(op_array, &zv);
129	10	SET_UNUSED(opline->op2);
130	10	} else {
131	10	MAKE_NOP(opline);
132	10	}
133
134	20	zend_delete_call_instructions(op_array, opline-1);
135	20	}
136	22	}
137	1.84k	}
138
139		/* arg_num is 1-based here, to match SEND encoding. */
140		static bool has_known_send_mode(const optimizer_call_info *info, uint32_t arg_num)
141	1.52k	{
142	1.52k	if (!info->func) {
143	1.51k	return false;
144	1.51k	}
145
146		/* For prototype functions we should not make assumptions about arguments that are not part of
147		* the signature: And inheriting method can add an optional by-ref argument. */
148	16	return !info->is_prototype
149	0	\|\| arg_num <= info->func->common.num_args
150	0	\|\| (info->func->common.fn_flags & ZEND_ACC_VARIADIC);
151	1.52k	}
152
153		void zend_optimize_func_calls(zend_op_array op_array, zend_optimizer_ctx ctx)
154	25.9k	{
155	25.9k	zend_op *opline = op_array->opcodes;
156	25.9k	const zend_op *end = opline + op_array->last;
157	25.9k	int call = 0;
158	25.9k	void *checkpoint;
159	25.9k	optimizer_call_info *call_stack;
160
161	25.9k	if (op_array->last < 2) {
162	1.02k	return;
163	1.02k	}
164
165	24.9k	checkpoint = zend_arena_checkpoint(ctx->arena);
166	24.9k	call_stack = zend_arena_calloc(&ctx->arena, op_array->last / 2, sizeof(optimizer_call_info));
167	189k	while (opline < end) {
168	164k	switch (opline->opcode) {
169	1.37k	case ZEND_INIT_FCALL_BY_NAME:
170	1.40k	case ZEND_INIT_NS_FCALL_BY_NAME:
171	1.50k	case ZEND_INIT_STATIC_METHOD_CALL:
172	1.56k	case ZEND_INIT_METHOD_CALL:
173	3.47k	case ZEND_INIT_FCALL:
174	8.88k	case ZEND_NEW:
175	8.88k	case ZEND_INIT_PARENT_PROPERTY_HOOK_CALL:
176		/* The argument passing optimizations are valid for prototypes as well,
177		* as inheritance cannot change between ref <-> non-ref arguments. */
178	8.88k	call_stack[call].func = zend_optimizer_get_called_func(
179	8.88k	ctx->script, op_array, opline, &call_stack[call].is_prototype);
180	8.88k	call_stack[call].try_inline =
181	8.88k	!call_stack[call].is_prototype
182	8.88k	&& opline->opcode != ZEND_NEW
183	3.47k	&& opline->opcode != ZEND_INIT_PARENT_PROPERTY_HOOK_CALL;
184	8.88k	ZEND_FALLTHROUGH;
185	9.07k	case ZEND_INIT_DYNAMIC_CALL:
186	9.07k	case ZEND_INIT_USER_CALL:
187	9.07k	call_stack[call].opline = opline;
188	9.07k	call_stack[call].func_arg_num = (uint32_t)-1;
189	9.07k	call++;
190	9.07k	break;
191	8.87k	case ZEND_DO_FCALL:
192	8.87k	case ZEND_DO_ICALL:
193	8.94k	case ZEND_DO_UCALL:
194	8.94k	case ZEND_DO_FCALL_BY_NAME:
195	9.01k	case ZEND_CALLABLE_CONVERT:
196	9.07k	case ZEND_CALLABLE_CONVERT_PARTIAL:
197	9.07k	call--;
198	9.07k	if (call_stack[call].func && call_stack[call].opline) {
199	1.93k	zend_op *fcall = call_stack[call].opline;
200
201	1.93k	if (fcall->opcode == ZEND_INIT_FCALL) {
202		/* nothing to do */
203	1.91k	} else if (fcall->opcode == ZEND_INIT_FCALL_BY_NAME) {
204	10	fcall->opcode = ZEND_INIT_FCALL;
205	10	fcall->op1.num = zend_vm_calc_used_stack(fcall->extended_value, call_stack[call].func);
206	10	literal_dtor(&ZEND_OP2_LITERAL(fcall));
207	10	fcall->op2.constant = fcall->op2.constant + 1;
208	10	} else if (fcall->opcode == ZEND_INIT_NS_FCALL_BY_NAME) {
209	0	fcall->opcode = ZEND_INIT_FCALL;
210	0	fcall->op1.num = zend_vm_calc_used_stack(fcall->extended_value, call_stack[call].func);
211	0	literal_dtor(&op_array->literals[fcall->op2.constant]);
212	0	literal_dtor(&op_array->literals[fcall->op2.constant + 2]);
213	0	fcall->op2.constant = fcall->op2.constant + 1;
214	6	} else if (fcall->opcode == ZEND_INIT_STATIC_METHOD_CALL
215	0	\|\| fcall->opcode == ZEND_INIT_METHOD_CALL
216	0	\|\| fcall->opcode == ZEND_INIT_PARENT_PROPERTY_HOOK_CALL
217	6	\|\| fcall->opcode == ZEND_NEW) {
218		/* We don't have specialized opcodes for this, do nothing */
219	6	} else {
220	0	ZEND_UNREACHABLE();
221	0	}
222
223		/* If the INIT opcode changed the DO opcode can also change to
224		* a more optimized one.
225		*
226		* At this point we also know whether or not the result of
227		* the DO opcode is used, allowing to optimize calls to
228		* ZEND_ACC_NODISCARD functions. */
229	1.93k	if (opline->opcode != ZEND_CALLABLE_CONVERT && opline->opcode != ZEND_CALLABLE_CONVERT_PARTIAL) {
230	1.88k	opline->opcode = zend_get_call_op(fcall, call_stack[call].func, !RESULT_UNUSED(opline));
231	1.88k	}
232
233	1.93k	if ((ZEND_OPTIMIZER_PASS_16 & ctx->optimization_level)
234	1.93k	&& call_stack[call].try_inline
235	1.89k	&& opline->opcode != ZEND_CALLABLE_CONVERT
236	1.87k	&& opline->opcode != ZEND_CALLABLE_CONVERT_PARTIAL) {
237	1.84k	zend_try_inline_call(op_array, fcall, opline, call_stack[call].func);
238	1.84k	}
239	1.93k	}
240	9.07k	call_stack[call].func = NULL;
241	9.07k	call_stack[call].opline = NULL;
242	9.07k	call_stack[call].try_inline = false;
243	9.07k	call_stack[call].func_arg_num = (uint32_t)-1;
244	9.07k	break;
245	34	case ZEND_FETCH_FUNC_ARG:
246	46	case ZEND_FETCH_STATIC_PROP_FUNC_ARG:
247	54	case ZEND_FETCH_OBJ_FUNC_ARG:
248	116	case ZEND_FETCH_DIM_FUNC_ARG:
249	116	if (call_stack[call - 1].func_arg_num != (uint32_t)-1
250	0	&& call_stack[call - 1].last_check_func_arg_opline != NULL
251	0	&& has_known_send_mode(&call_stack[call - 1], call_stack[call - 1].func_arg_num)) {
252	0	if (ARG_SHOULD_BE_SENT_BY_REF(call_stack[call - 1].func, call_stack[call - 1].func_arg_num)) {
253		/* There's no TMP specialization for FETCH_OBJ_W/FETCH_DIM_W. Avoid
254		* converting it and error at runtime in the FUNC_ARG variant. */
255	0	if ((opline->opcode == ZEND_FETCH_OBJ_FUNC_ARG \|\| opline->opcode == ZEND_FETCH_DIM_FUNC_ARG)
256	0	&& opline->op1_type == IS_TMP_VAR) {
257		/* Don't remove the associated CHECK_FUNC_ARG opcode. */
258	0	call_stack[call - 1].last_check_func_arg_opline = NULL;
259	0	break;
260	0	}
261	0	if (opline->opcode != ZEND_FETCH_STATIC_PROP_FUNC_ARG) {
262	0	opline->opcode -= 9;
263	0	} else {
264	0	opline->opcode = ZEND_FETCH_STATIC_PROP_W;
265	0	}
266	0	} else {
267	0	if (opline->opcode == ZEND_FETCH_DIM_FUNC_ARG
268	0	&& opline->op2_type == IS_UNUSED) {
269		/* FETCH_DIM_FUNC_ARG supports UNUSED op2, while FETCH_DIM_R does not.
270		* Performing the replacement would create an invalid opcode. */
271	0	call_stack[call - 1].try_inline = false;
272		/* Don't remove the associated CHECK_FUNC_ARG opcode. */
273	0	call_stack[call - 1].last_check_func_arg_opline = NULL;
274	0	break;
275	0	}
276
277	0	if (opline->opcode != ZEND_FETCH_STATIC_PROP_FUNC_ARG) {
278	0	opline->opcode -= 12;
279	0	} else {
280	0	opline->opcode = ZEND_FETCH_STATIC_PROP_R;
281	0	}
282	0	}
283	0	}
284	116	break;
285	1.27k	case ZEND_SEND_VAL_EX:
286	1.27k	if (opline->op2_type == IS_CONST) {
287	62	call_stack[call - 1].try_inline = false;
288	62	break;
289	62	}
290
291	1.21k	if (has_known_send_mode(&call_stack[call - 1], opline->op2.num)) {
292	10	if (!ARG_MUST_BE_SENT_BY_REF(call_stack[call - 1].func, opline->op2.num)) {
293	4	opline->opcode = ZEND_SEND_VAL;
294	4	}
295	10	}
296	1.21k	break;
297	110	case ZEND_CHECK_FUNC_ARG:
298	110	if (opline->op2_type == IS_CONST) {
299	12	call_stack[call - 1].try_inline = false;
300	12	call_stack[call - 1].func_arg_num = (uint32_t)-1;
301	12	break;
302	12	}
303
304	98	if (has_known_send_mode(&call_stack[call - 1], opline->op2.num)) {
305	0	call_stack[call - 1].func_arg_num = opline->op2.num;
306	0	call_stack[call - 1].last_check_func_arg_opline = opline;
307	0	}
308	98	break;
309	110	case ZEND_SEND_FUNC_ARG:
310		/* Don't transform SEND_FUNC_ARG if any FETCH opcodes weren't transformed. */
311	110	if (call_stack[call - 1].last_check_func_arg_opline == NULL) {
312	110	if (opline->op2_type == IS_CONST) {
313	12	call_stack[call - 1].try_inline = false;
314	12	}
315	110	break;
316	110	}
317	0	MAKE_NOP(call_stack[call - 1].last_check_func_arg_opline);
318	0	call_stack[call - 1].last_check_func_arg_opline = NULL;
319	0	ZEND_FALLTHROUGH;
320	120	case ZEND_SEND_VAR_EX:
321	120	if (opline->op2_type == IS_CONST) {
322	6	call_stack[call - 1].try_inline = false;
323	6	break;
324	6	}
325
326	114	if (has_known_send_mode(&call_stack[call - 1], opline->op2.num)) {
327	0	call_stack[call - 1].func_arg_num = (uint32_t)-1;
328	0	if (ARG_SHOULD_BE_SENT_BY_REF(call_stack[call - 1].func, opline->op2.num)) {
329	0	opline->opcode = ZEND_SEND_REF;
330	0	} else {
331	0	opline->opcode = ZEND_SEND_VAR;
332	0	}
333	0	}
334	114	break;
335	112	case ZEND_SEND_VAR_NO_REF_EX:
336	112	if (opline->op2_type == IS_CONST) {
337	6	call_stack[call - 1].try_inline = false;
338	6	break;
339	6	}
340
341	106	if (has_known_send_mode(&call_stack[call - 1], opline->op2.num)) {
342	6	if (ARG_MUST_BE_SENT_BY_REF(call_stack[call - 1].func, opline->op2.num)) {
343	0	opline->opcode = ZEND_SEND_VAR_NO_REF;
344	6	} else if (ARG_MAY_BE_SENT_BY_REF(call_stack[call - 1].func, opline->op2.num)) {
345	0	opline->opcode = ZEND_SEND_VAL;
346	6	} else {
347	6	opline->opcode = ZEND_SEND_VAR;
348	6	}
349	6	}
350	106	break;
351	7.34k	case ZEND_SEND_VAL:
352	7.45k	case ZEND_SEND_VAR:
353	7.45k	case ZEND_SEND_REF:
354	7.45k	if (opline->op2_type == IS_CONST) {
355	20	call_stack[call - 1].try_inline = false;
356	20	break;
357	20	}
358	7.43k	break;
359	7.43k	case ZEND_SEND_UNPACK:
360	14	case ZEND_SEND_USER:
361	14	case ZEND_SEND_ARRAY:
362	14	call_stack[call - 1].try_inline = false;
363	14	break;
364	137k	default:
365	137k	break;
366	164k	}
367	164k	opline++;
368	164k	}
369
370	24.9k	zend_arena_release(&ctx->arena, checkpoint);
371	24.9k	}