zend_types: Remove Z_*CONSTANT_*()

This macro is very rarely used and badly named by neither including the `IS`
nor the `AST` in its name.

Author: TimWolla

UPGRADING.INTERNALS

@@ -110,6 +110,9 @@ PHP 8.6 INTERNALS UPGRADE NOTES
   . Added ZEND_CONTAINER_OF().
   . The OPENBASEDIR_CHECKPATH() compatibility macro has been removed, instead
     use php_check_open_basedir() directly.
+  . The Z_CONSTANT(), Z_CONSTANT_P(), Z_OPT_CONSTANT(), and
+    Z_OPT_CONSTANT_P() macros have been removed. Check for IS_CONSTANT_AST
+    directly.
 
 ========================
 2. Build system changes

Zend/zend_compile.c

@@ -9207,7 +9207,7 @@ static void zend_compile_prop_decl(zend_ast *ast, zend_ast *type_ast, uint32_t f
 		if (*value_ast_ptr) {
 			zend_const_expr_to_zval(&value_zv, value_ast_ptr, /* allow_dynamic */ false);
 
-			if (ZEND_TYPE_IS_SET(type) && !Z_CONSTANT(value_zv)
+			if (ZEND_TYPE_IS_SET(type) && Z_TYPE(value_zv) != IS_CONSTANT_AST
 					&& !zend_is_valid_default_value(type, &value_zv)) {
 				zend_string *str = zend_type_to_string(type);
 				if (Z_TYPE(value_zv) == IS_NULL && !ZEND_TYPE_IS_INTERSECTION(type)) {
@@ -9331,7 +9331,7 @@ static void zend_compile_class_const_decl(zend_ast *ast, uint32_t flags, zend_as
 
 		zend_const_expr_to_zval(&value_zv, value_ast_ptr, /* allow_dynamic */ false);
 
-		if (!Z_CONSTANT(value_zv) && ZEND_TYPE_IS_SET(type) && !zend_is_valid_default_value(type, &value_zv)) {
+		if (Z_TYPE(value_zv) != IS_CONSTANT_AST && ZEND_TYPE_IS_SET(type) && !zend_is_valid_default_value(type, &value_zv)) {
 			zend_string *type_str = zend_type_to_string(type);
 
 			zend_error_noreturn(E_COMPILE_ERROR, "Cannot use %s as value for class constant %s::%s of type %s",

Zend/zend_ini_parser.y

@@ -151,7 +151,7 @@ static void zend_ini_get_constant(zval *result, zval *name)
 		   	&& (c = zend_get_constant(Z_STR_P(name))) != 0) {
 		if (Z_TYPE_P(c) != IS_STRING) {
 			ZVAL_COPY_OR_DUP(&tmp, c);
-			if (Z_OPT_CONSTANT(tmp)) {
+			if (Z_OPT_TYPE(tmp) == IS_CONSTANT_AST) {
 				zval_update_constant_ex(&tmp, NULL);
 			}
 			convert_to_string(&tmp);

Zend/zend_types.h

@@ -929,8 +929,6 @@ static zend_always_inline uint32_t zval_gc_info(uint32_t gc_type_info) {
 	} while(0)
 
 /* All data types < IS_STRING have their constructor/destructors skipped */
-#define Z_CONSTANT(zval)			(Z_TYPE(zval) == IS_CONSTANT_AST)
-#define Z_CONSTANT_P(zval_p)		Z_CONSTANT(*(zval_p))
 
 #if 1
 /* This optimized version assumes that we have a single "type_flag" */
@@ -948,9 +946,6 @@ static zend_always_inline uint32_t zval_gc_info(uint32_t gc_type_info) {
 #define Z_OPT_TYPE(zval)			(Z_TYPE_INFO(zval) & Z_TYPE_MASK)
 #define Z_OPT_TYPE_P(zval_p)		Z_OPT_TYPE(*(zval_p))
 
-#define Z_OPT_CONSTANT(zval)		(Z_OPT_TYPE(zval) == IS_CONSTANT_AST)
-#define Z_OPT_CONSTANT_P(zval_p)	Z_OPT_CONSTANT(*(zval_p))
-
 #define Z_OPT_REFCOUNTED(zval)		Z_TYPE_INFO_REFCOUNTED(Z_TYPE_INFO(zval))
 #define Z_OPT_REFCOUNTED_P(zval_p)	Z_OPT_REFCOUNTED(*(zval_p))
 

Zend/zend_vm_def.h

@@ -8320,7 +8320,7 @@ ZEND_VM_HANDLER(143, ZEND_DECLARE_CONST, CONST, CONST)
 	val   = GET_OP2_ZVAL_PTR(BP_VAR_R);
 
 	ZVAL_COPY(&c.value, val);
-	if (Z_OPT_CONSTANT(c.value)) {
+	if (Z_OPT_TYPE(c.value) == IS_CONSTANT_AST) {
 		if (UNEXPECTED(zval_update_constant_ex(&c.value, EX(func)->op_array.scope) != SUCCESS)) {
 			zval_ptr_dtor_nogc(&c.value);
 			FREE_OP1();
@@ -8352,7 +8352,7 @@ ZEND_VM_HANDLER(210, ZEND_DECLARE_ATTRIBUTED_CONST, CONST, CONST)
 	val   = GET_OP2_ZVAL_PTR(BP_VAR_R);
 
 	ZVAL_COPY(&c.value, val);
-	if (Z_OPT_CONSTANT(c.value)) {
+	if (Z_OPT_TYPE(c.value) == IS_CONSTANT_AST) {
 		if (UNEXPECTED(zval_update_constant_ex(&c.value, EX(func)->op_array.scope) != SUCCESS)) {
 			zval_ptr_dtor_nogc(&c.value);
 			FREE_OP1();

Zend/zend_vm_execute.h

@@ -10927,7 +10927,7 @@ static int zend_jit_recv_init(zend_jit_ctx *jit, const zend_op *opline, const ze
 			zv, true);
 	}
 
-	if (Z_CONSTANT_P(zv)) {
+	if (Z_TYPE_P(zv) == IS_CONSTANT_AST) {
 		jit_SET_EX_OPLINE(jit, opline);
 		ref = ir_CALL_2(IR_I32, ir_CONST_FC_FUNC(zval_update_constant_ex),
 			jit_ZVAL_ADDR(jit, res_addr),