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Support failed JIT test case: fetch_dim_func_args_001.phpt
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1. For statement "$a->change($a = array("a" => range(1, 5)));", the
following opcodes will be generated:

  0002 ASSIGN CV0($a) V1
  0003 INIT_METHOD_CALL 1 CV0($a) string("change")
  0004 INIT_NS_FCALL_BY_NAME 2 string("A\range")
  0005 SEND_VAL_EX int(1) 1
  0006 SEND_VAL_EX int(5) 2
  0007 V1 = DO_FCALL_BY_NAME

The updates in function zend_jit_init_fcall(), zend_jit_send_val() and
zend_jit_do_fcall() are made to support INIT_NS_FCALL_BY_NAME,
SEND_VAL_EX and DO_FCALL_BY_NAME respectively.

2. For method $change(), opcode RECV is used to obtain the argument:

  0000 #1.CV0($config) [rc1, rcn, array of [any, ref]] = RECV 1

Accordingly the updates in functions zend_jit_recv() and
zend_jit_verify_arg_type() are made.

3. For statement "array_keys($config["a"])", the following opcodes will
be generated:

  0001 INIT_NS_FCALL_BY_NAME 1 string("A\array_keys")
  0002 CHECK_FUNC_ARG 1
  0003 #3.V1 [ref, rc1, rcn, any] = FETCH_DIM_FUNC_ARG #1.CV0($config)
     ... -> #2.CV0($config) [rc1, rcn, ...
  0004 SEND_FUNC_ARG #3.V1 [ref, rc1, rcn, any] 1
  0005 #4.V1 [ref, rc1, rcn, any] = DO_FCALL_BY_NAME

CHECK_FUNC_ARG and SEND_FUNC_ARG are not supported before. See the
updates in functions zend_jit_check_func_arg() and zend_jit_send_var().

Besides, a new path is covered in macro OBJ_RELEASE when leaving.
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@shqking @dstogov
shqking authored and dstogov committed May 18, 2021
1 parent 3748319 commit 99118a6
Showing 1 changed file with 204 additions and 9 deletions.
213 changes: 204 additions & 9 deletions ext/opcache/jit/zend_jit_arm64.dasc
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Original file line number Diff line number Diff line change
Expand Up @@ -1136,7 +1136,6 @@ static void* dasm_labels[zend_lb_MAX];
|.macro OBJ_RELEASE, reg, exit_label, tmp_reg1, tmp_reg2
| GC_DELREF Rx(reg), Rw(tmp_reg1)
| bne >1
| brk #0 // TODO
| // zend_objects_store_del(obj);
|| if (reg != ZREG_FCARG1x) {
| mov FCARG1x, Rx(reg)
Expand Down Expand Up @@ -4706,13 +4705,14 @@ static int zend_jit_init_fcall(dasm_State **Dst, const zend_op *opline, uint32_t
} else if (opline->opcode == ZEND_INIT_FCALL_BY_NAME) {
| brk #0 // TODO
} else if (opline->opcode == ZEND_INIT_NS_FCALL_BY_NAME) {
| brk #0 // TODO
| LOAD_ADDR FCARG1x, zv;
| EXT_CALL zend_jit_find_ns_func_helper, REG0
} else {
ZEND_UNREACHABLE();
}
| // CACHE_PTR(opline->result.num, fbc);
| ldr REG1, EX->run_time_cache
| // Get the return value of function zend_jit_find_func_helper
| // Get the return value of function zend_jit_find_func_helper/zend_jit_find_ns_func_helper
| mov REG0, RETVALx
| str REG0, [REG1, #opline->result.num]
if (JIT_G(trigger) == ZEND_JIT_ON_HOT_TRACE) {
Expand Down Expand Up @@ -5282,7 +5282,38 @@ static int zend_jit_do_fcall(dasm_State **Dst, const zend_op *opline, const zend
|8:
}
if (opline->opcode == ZEND_DO_FCALL_BY_NAME) {
| brk #0 // TODO
if (!func) {
if (trace) {
uint32_t exit_point = zend_jit_trace_get_exit_point(opline, ZEND_JIT_EXIT_TO_VM);

exit_addr = zend_jit_trace_get_exit_addr(exit_point);
if (!exit_addr) {
return 0;
}
| brk #0 // TODO
} else {
|| ZEND_ASSERT(ZEND_ACC_DEPRECATED <= MAX_IMM12);
| ldr TMP1w, [REG0, #offsetof(zend_op_array, fn_flags)]
| tst TMP1w, #ZEND_ACC_DEPRECATED
| bne >1
|.cold_code
|1:
| brk #0 // TODO
if (!GCC_GLOBAL_REGS) {
| mov FCARG1x, RX
}
| EXT_CALL zend_jit_deprecated_helper, REG0
| and RETVALw, RETVALw, #0xff
| cmp RETVALw, #0 // Result is 0 on exception
| ldr REG0, EX:RX->func // reload
| bne >1
| b ->exception_handler
|.code
|1:
}
} else if (func->common.fn_flags & ZEND_ACC_DEPRECATED) {
| brk #0 // TODO
}
}

| // ZVAL_NULL(EX_VAR(opline->result.var));
Expand Down Expand Up @@ -5445,7 +5476,17 @@ static int zend_jit_send_val(dasm_State **Dst, const zend_op *opline, uint32_t o
}
| brk #0 // TODO
} else {
| brk #0 // TODO
| ldr REG0, EX:RX->func
| ldr TMP1w, [REG0, #offsetof(zend_function, quick_arg_flags)]
| LOAD_32BIT_VAL TMP2w, mask
| tst TMP1w, TMP2w
| bne >1
|.cold_code
|1:
| brk #0 // TODO
| SET_EX_OPLINE opline, REG0
| b ->throw_cannot_pass_by_ref
|.code
}
}

Expand Down Expand Up @@ -5504,7 +5545,30 @@ static int zend_jit_send_var(dasm_State **Dst, const zend_op *opline, const zend
} else if (opline->opcode == ZEND_SEND_VAR_NO_REF_EX) {
| brk #0 // TODO
} else if (opline->opcode == ZEND_SEND_FUNC_ARG) {
| brk #0 // TODO
if (JIT_G(trigger) == ZEND_JIT_ON_HOT_TRACE
&& JIT_G(current_frame)
&& JIT_G(current_frame)->call
&& JIT_G(current_frame)->call->func) {
if (ARG_SHOULD_BE_SENT_BY_REF(JIT_G(current_frame)->call->func, arg_num)) {
if (!zend_jit_send_ref(Dst, opline, op_array, op1_info, 0)) {
return 0;
}
return 1;
}
} else {
| ldr TMP1w, [RX, #offsetof(zend_execute_data, This.u1.type_info)]
| LOAD_32BIT_VAL TMP2w, ZEND_CALL_SEND_ARG_BY_REF
| tst TMP1w, TMP2w
| bne >1
|.cold_code
|1:
| brk #0 // TODO
if (!zend_jit_send_ref(Dst, opline, op_array, op1_info, 1)) {
return 0;
}
| b >7
|.code
}
}

if (op1_info & MAY_BE_UNDEF) {
Expand Down Expand Up @@ -5579,7 +5643,42 @@ static int zend_jit_check_func_arg(dasm_State **Dst, const zend_op *opline)
{
uint32_t arg_num = opline->op2.num;

| brk #0 // TODO
if (JIT_G(trigger) == ZEND_JIT_ON_HOT_TRACE
&& JIT_G(current_frame)
&& JIT_G(current_frame)->call
&& JIT_G(current_frame)->call->func) {
| brk #0 // TODO
} else {
// if (QUICK_ARG_SHOULD_BE_SENT_BY_REF(EX(call)->func, arg_num)) {
uint32_t mask = (ZEND_SEND_BY_REF|ZEND_SEND_PREFER_REF) << ((arg_num + 3) * 2);

if (!zend_jit_reuse_ip(Dst)) {
return 0;
}

| ldr REG0, EX:RX->func
| ldr TMP1w, [REG0, #offsetof(zend_function, quick_arg_flags)]
| LOAD_32BIT_VAL TMP2w, mask
| tst TMP1w, TMP2w
| bne >1
|.cold_code
|1:
| brk #0 // TODO
| // ZEND_ADD_CALL_FLAG(EX(call), ZEND_CALL_SEND_ARG_BY_REF);
| ldr TMP1w, [RX, #offsetof(zend_execute_data, This.u1.type_info)]
| LOAD_32BIT_VAL TMP2w, ZEND_CALL_SEND_ARG_BY_REF
| orr TMP1w, TMP1w, TMP2w
| str TMP1w, [RX, #offsetof(zend_execute_data, This.u1.type_info)]
| b >1
|.code
| // ZEND_DEL_CALL_FLAG(EX(call), ZEND_CALL_SEND_ARG_BY_REF);
| ldr TMP1w, [RX, #offsetof(zend_execute_data, This.u1.type_info)]
| LOAD_32BIT_VAL TMP2w, ZEND_CALL_SEND_ARG_BY_REF
| mvn TMP2w, TMP2w
| and TMP1w, TMP1w, TMP2w
| str TMP1w, [RX, #offsetof(zend_execute_data, This.u1.type_info)]
|1:
}

return 1;
}
Expand Down Expand Up @@ -6160,7 +6259,59 @@ static int zend_jit_verify_arg_type(dasm_State **Dst, const zend_op *opline, zen
uint32_t type_mask = ZEND_TYPE_PURE_MASK(arg_info->type) & MAY_BE_ANY;
zend_reg tmp_reg = (type_mask == 0 || is_power_of_two(type_mask)) ? ZREG_FCARG1x : ZREG_REG0;

| brk #0 // TODO
if (ZEND_ARG_SEND_MODE(arg_info)) {
| brk #0 // TODO
}

if (type_mask != 0) {
if (is_power_of_two(type_mask)) {
uint32_t type_code = concrete_type(type_mask);
|| ZEND_ASSERT(type_code <= MAX_IMM12);
| IF_NOT_ZVAL_TYPE res_addr, type_code, >1, TMP1w, TMP2
} else {
| brk #0 // TODO
}

|.cold_code
|1:

in_cold = 1;
}

| brk #0 // TODO: currently in cold code
if (Z_REG(res_addr) != ZREG_FCARG1x || Z_OFFSET(res_addr) != 0) {
| brk #0 // TODO
| LOAD_ZVAL_ADDR FCARG1x, res_addr
}
if (JIT_G(trigger) == ZEND_JIT_ON_HOT_TRACE) {
| brk #0 // TODO
| SET_EX_OPLINE opline, REG0
} else {
| ADDR_STORE EX->opline, opline, REG0
}
| LOAD_ADDR FCARG2x, (ptrdiff_t)arg_info
| EXT_CALL zend_jit_verify_arg_slow, REG0
| mov REG0w, RETVALw

if (check_exception) {
| brk #0 // TODO
| and REG0w, REG0w, #0xff
| tst REG0w, REG0w
if (in_cold) {
| bne >1
| b ->exception_handler
|.code
|1:
} else {
| beq ->exception_handler
}
} else if (in_cold) {
| brk #0 // TODO
| b >1
|.code
|1:
}

return 1;
}

Expand All @@ -6169,7 +6320,51 @@ static int zend_jit_recv(dasm_State **Dst, const zend_op *opline, const zend_op_
uint32_t arg_num = opline->op1.num;
zend_arg_info *arg_info = NULL;

| brk #0 // TODO
if (op_array->fn_flags & ZEND_ACC_HAS_TYPE_HINTS) {
if (EXPECTED(arg_num <= op_array->num_args)) {
arg_info = &op_array->arg_info[arg_num-1];
} else if (UNEXPECTED(op_array->fn_flags & ZEND_ACC_VARIADIC)) {
arg_info = &op_array->arg_info[op_array->num_args];
}
if (arg_info && !ZEND_TYPE_IS_SET(arg_info->type)) {
arg_info = NULL;
}
}

if (arg_info || (opline+1)->opcode != ZEND_RECV) {
| ldr TMP1w, EX->This.u2.num_args
| LOAD_32BIT_VAL TMP2w, arg_num
| cmp TMP1w, TMP2w
if (JIT_G(trigger) == ZEND_JIT_ON_HOT_TRACE) {
int32_t exit_point = zend_jit_trace_get_exit_point(opline, ZEND_JIT_EXIT_TO_VM);
const void *exit_addr = zend_jit_trace_get_exit_addr(exit_point);

if (!exit_addr) {
return 0;
}
| brk #0 // TODO
} else {
| blt >1
|.cold_code
|1:
| brk #0 // TODO
|.code
}
}

if (arg_info) {
if (!zend_jit_verify_arg_type(Dst, opline, arg_info, 1)) {
return 0;
}
}

if (JIT_G(trigger) != ZEND_JIT_ON_HOT_TRACE) {
if ((opline+1)->opcode != ZEND_RECV && (opline+1)->opcode != ZEND_RECV_INIT) {
| LOAD_IP_ADDR (opline + 1)
zend_jit_set_last_valid_opline(opline + 1);
}
}

return 1;
}

Expand Down

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