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Micro optimization for the main interpreter loop

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This commit is contained in:
Dmitry Stogov 2014-07-17 11:18:44 +04:00
parent 8217e20ddb
commit 2febfbab8e
2 changed files with 22 additions and 32 deletions
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23
Zend/zend_vm_execute.h
View File

@ -326,10 +326,10 @@ static opcode_handler_t zend_vm_get_opcode_handler(zend_uchar opcode, zend_op* o
#define HANDLE_EXCEPTION() LOAD_OPLINE(); ZEND_VM_CONTINUE()
#define HANDLE_EXCEPTION_LEAVE() LOAD_OPLINE(); ZEND_VM_LEAVE()
#define LOAD_REGS()
#define ZEND_VM_CONTINUE() return 0
#define ZEND_VM_RETURN() return 1
#define ZEND_VM_ENTER() return 2
#define ZEND_VM_LEAVE() return 3
#define ZEND_VM_CONTINUE() return 0
#define ZEND_VM_RETURN() return -1
#define ZEND_VM_ENTER() return 1
#define ZEND_VM_LEAVE() return 2
#define ZEND_VM_DISPATCH(opcode, opline) return zend_vm_get_opcode_handler(opcode, opline)(ZEND_OPCODE_HANDLER_ARGS_PASSTHRU);
#define ZEND_OPCODE_HANDLER_ARGS_PASSTHRU_INTERNAL execute_data TSRMLS_CC
@ -351,16 +351,11 @@ ZEND_API void execute_ex(zend_execute_data *execute_data TSRMLS_DC)
}
#endif
if ((ret = OPLINE->handler(execute_data TSRMLS_CC)) > 0) {
switch (ret) {
case 1:
return;
case 2:
case 3:
execute_data = EG(current_execute_data);
break;
default:
break;
if (UNEXPECTED((ret = OPLINE->handler(execute_data TSRMLS_CC)) != 0)) {
if (EXPECTED(ret > 0)) {
execute_data = EG(current_execute_data);
} else {
return;
}
}

31
Zend/zend_vm_gen.php
View File

@ -914,10 +914,10 @@ function gen_executor($f, $skl, $spec, $kind, $executor_name, $initializer_name,
out($f,"#define HANDLE_EXCEPTION() LOAD_OPLINE(); ZEND_VM_CONTINUE()\n");
out($f,"#define HANDLE_EXCEPTION_LEAVE() LOAD_OPLINE(); ZEND_VM_LEAVE()\n");
out($f,"#define LOAD_REGS()\n");
out($f,"#define ZEND_VM_CONTINUE() return 0\n");
out($f,"#define ZEND_VM_RETURN() return 1\n");
out($f,"#define ZEND_VM_ENTER() return 2\n");
out($f,"#define ZEND_VM_LEAVE() return 3\n");
out($f,"#define ZEND_VM_CONTINUE() return 0\n");
out($f,"#define ZEND_VM_RETURN() return -1\n");
out($f,"#define ZEND_VM_ENTER() return 1\n");
out($f,"#define ZEND_VM_LEAVE() return 2\n");
out($f,"#define ZEND_VM_DISPATCH(opcode, opline) return zend_vm_get_opcode_handler(opcode, opline)(ZEND_OPCODE_HANDLER_ARGS_PASSTHRU);\n\n");
out($f,"#define ZEND_OPCODE_HANDLER_ARGS_PASSTHRU_INTERNAL execute_data TSRMLS_CC\n");
break;
@ -1028,7 +1028,7 @@ function gen_executor($f, $skl, $spec, $kind, $executor_name, $initializer_name,
// Emit code that dispatches to opcode handler
switch ($kind) {
case ZEND_VM_KIND_CALL:
out($f, $m[1]."if ((ret = OPLINE->handler(execute_data TSRMLS_CC)) > 0)".$m[3]."\n");
out($f, $m[1]."if (UNEXPECTED((ret = OPLINE->handler(execute_data TSRMLS_CC)) != 0))".$m[3]."\n");
break;
case ZEND_VM_KIND_SWITCH:
out($f, $m[1]."dispatch_handler = OPLINE->handler;\nzend_vm_dispatch:\n".$m[1]."switch ((int)dispatch_handler)".$m[3]."\n");
@ -1041,15 +1041,10 @@ function gen_executor($f, $skl, $spec, $kind, $executor_name, $initializer_name,
case "INTERNAL_EXECUTOR":
if ($kind == ZEND_VM_KIND_CALL) {
// Executor is defined as a set of functions
out($f, $m[1]."switch (ret) {\n" .
$m[1]."\tcase 1:\n" .
$m[1]."\t\treturn;\n".
$m[1]."\tcase 2:\n" .
$m[1]."\tcase 3:\n" .
$m[1]."\t\texecute_data = EG(current_execute_data);\n".
$m[1]."\t\tbreak;\n" .
$m[1]."\tdefault:\n".
$m[1]."\t\tbreak;\n".
out($f, $m[1]."if (EXPECTED(ret > 0)) {\n" .
$m[1]."\texecute_data = EG(current_execute_data);\n".
$m[1]."} else {\n" .
$m[1]."\treturn;\n".
$m[1]."}".$m[3]."\n");
} else {
// Emit executor code
@ -1415,10 +1410,10 @@ function gen_vm($def, $skel) {
out($f,"#undef ZEND_VM_LEAVE\n");
out($f,"#undef ZEND_VM_DISPATCH\n");
out($f,"#undef ZEND_OPCODE_HANDLER_ARGS_PASSTHRU_INTERNAL\n\n");
out($f,"#define ZEND_VM_CONTINUE() return 0\n");
out($f,"#define ZEND_VM_RETURN() return 1\n");
out($f,"#define ZEND_VM_ENTER() return 2\n");
out($f,"#define ZEND_VM_LEAVE() return 3\n");
out($f,"#define ZEND_VM_CONTINUE() return 0\n");
out($f,"#define ZEND_VM_RETURN() return -1\n");
out($f,"#define ZEND_VM_ENTER() return 1\n");
out($f,"#define ZEND_VM_LEAVE() return 2\n");
out($f,"#define ZEND_VM_DISPATCH(opcode, opline) return zend_vm_get_opcode_handler(opcode, opline)(ZEND_OPCODE_HANDLER_ARGS_PASSTHRU);\n\n");
out($f,"#define ZEND_OPCODE_HANDLER_ARGS_PASSTHRU_INTERNAL execute_data TSRMLS_CC\n\n");
}