zend_compile: Optimize arguments for ZEND_NEW

Apply the optimization for static method calls to `new` calls, since `new` is
effectively a static method for all intents and purposes.

For:

    <?php

    final class MyClass
    {
    	private function __construct(
    		private \Random\Engine $foo,
    		private int $bar = 0,
    	) {}

    	public static function new(int $bar): self
    	{
    		$engine = new \Random\Engine\Xoshiro256StarStar(seed: 123);
    		return new self(foo: $engine, bar: $bar);
    	}
    }

    for ($i = 0; $i < 3_000_000; $i++) {
    	MyClass::new($i);
    }

This is ~1.13 faster for a gcc 13.3 release build on a Intel(R) Core(TM)
i7-1365U.

    Benchmark 1: /tmp/bench/php.old /tmp/bench/test6.php
      Time (mean ± σ):     409.5 ms ±   1.9 ms    [User: 406.6 ms, System: 2.2 ms]
      Range (min … max):   407.4 ms … 414.0 ms    10 runs

    Benchmark 2: /tmp/bench/php.new /tmp/bench/test6.php
      Time (mean ± σ):     360.9 ms ±   1.7 ms    [User: 358.5 ms, System: 2.2 ms]
      Range (min … max):   359.2 ms … 365.0 ms    10 runs

    Summary
      /tmp/bench/php.new /tmp/bench/test6.php ran
        1.13 ± 0.01 times faster than /tmp/bench/php.old /tmp/bench/test6.php

Author: TimWolla

Zend/zend_compile.c

@@ -5497,7 +5497,34 @@ static void zend_compile_new(znode *result, zend_ast *ast) /* {{{ */
 		opline->op2.num = zend_alloc_cache_slot();
 	}
 
-	zend_compile_call_common(&ctor_result, args_ast, NULL, ast->lineno);
+	zend_class_entry *ce = NULL;
+	zend_function *fbc = NULL;
+	if (opline->op1_type == IS_CONST) {
+		zend_string *lcname = Z_STR_P(CT_CONSTANT(opline->op1) + 1);
+		ce = zend_hash_find_ptr(CG(class_table), lcname);
+		if (ce) {
+			if (zend_compile_ignore_class(ce, CG(active_op_array)->filename)) {
+				ce = NULL;
+			}
+		} else if (CG(active_class_entry)
+				&& zend_string_equals_ci(CG(active_class_entry)->name, lcname)) {
+			ce = CG(active_class_entry);
+		}
+	} else if (opline->op1_type == IS_UNUSED
+			&& (opline->op1.num & ZEND_FETCH_CLASS_MASK) == ZEND_FETCH_CLASS_SELF
+			&& zend_is_scope_known()) {
+		ce = CG(active_class_entry);
+	}
+	if (
+		ce
+		&& ce->default_object_handlers->get_constructor == zend_std_get_constructor
+		&& ce->constructor
+		&& is_func_accessible(ce->constructor)
+	) {
+		fbc = ce->constructor;
+	}
+
+	zend_compile_call_common(&ctor_result, args_ast, fbc, ast->lineno);
 	zend_do_free(&ctor_result);
 }
 /* }}} */

ext/opcache/tests/opt/gh18107_1.phpt

@@ -30,12 +30,12 @@ $_main:
 0000 T1 = ISSET_ISEMPTY_CV (isset) CV0($badvar)
 0001 JMPNZ T1 0006
 0002 V3 = NEW 1 string("Exception")
-0003 SEND_VAL_EX string("Should happen") 1
+0003 SEND_VAL%S string("Should happen") 1
 0004 DO_FCALL
 0005 THROW V3
 0006 JMP 0006
 0007 V6 = NEW 1 string("Exception")
-0008 SEND_VAL_EX string("Should not happen") 1
+0008 SEND_VAL%S string("Should not happen") 1
 0009 DO_FCALL
 0010 THROW V6
 0011 FAST_RET T5

ext/opcache/tests/opt/gh18107_2.phpt

@@ -33,15 +33,15 @@ $_main:
 0000 T2 = ISSET_ISEMPTY_CV (isset) CV0($badvar)
 0001 JMPNZ T2 0008
 0002 V4 = NEW 1 string("Exception")
-0003 SEND_VAL_EX string("Should happen") 1
+0003 SEND_VAL%S string("Should happen") 1
 0004 DO_FCALL
 0005 THROW V4
 0006 CV1($e) = CATCH string("Throwable")
 0007 ECHO string("foo")
 0008 T6 = FAST_CALL 0010
 0009 JMP 0015
 0010 V7 = NEW 1 string("Exception")
-0011 SEND_VAL_EX string("Should not happen") 1
+0011 SEND_VAL%S string("Should not happen") 1
 0012 DO_FCALL
 0013 THROW V7
 0014 FAST_RET T6