cgen,builtin: support for 64bit int 1 (#25236)

vlib/builtin/array.v

@@ -607,7 +607,8 @@ pub fn (mut a array) delete_last() {
 // Alternative: Slices can also be made with [start..end] notation
 // Alternative: `.slice_ni()` will always return an array.
 fn (a array) slice(start int, _end int) array {
-	end := if _end == max_int { a.len } else { _end } // max_int
+	// WARNNING: The is a temp solution for bootstrap!
+	end := if _end == max_i64 || _end == max_i32 { a.len } else { _end } // max_int
 	$if !no_bounds_checking {
 		if start > end {
 			panic('array.slice: invalid slice index (start>end):' + impl_i64_to_string(i64(start)) +
@@ -644,7 +645,8 @@ fn (a array) slice(start int, _end int) array {
 // This function always return a valid array.
 fn (a array) slice_ni(_start int, _end int) array {
 	// a.flags.clear(.noslices)
-	mut end := if _end == max_int { a.len } else { _end } // max_int
+	// WARNNING: The is a temp solution for bootstrap!
+	mut end := if _end == max_i64 || _end == max_i32 { a.len } else { _end } // max_int
 	mut start := _start
 
 	if start < 0 {

vlib/builtin/int.v

@@ -42,15 +42,23 @@ pub const max_i16 = i16(32767)
 pub const min_i32 = i32(-2147483648)
 pub const max_i32 = i32(2147483647)
 
-pub const min_int = int(-2147483648)
-pub const max_int = int(2147483647)
-
 // -9223372036854775808 is wrong, because C compilers parse literal values
 // without sign first, and 9223372036854775808 overflows i64, hence the
 // consecutive subtraction by 1
 pub const min_i64 = i64(-9223372036854775807 - 1)
 pub const max_i64 = i64(9223372036854775807)
 
+pub const min_int = $if new_int ? && (arm64 || amd64 || rv64 || s390x || ppc64le || loongarch64) {
+	int(min_i64)
+} $else {
+	int(min_i32)
+}
+pub const max_int = $if new_int ? && (arm64 || amd64 || rv64 || s390x || ppc64le || loongarch64) {
+	int(max_i64)
+} $else {
+	int(max_i32)
+}
+
 pub const min_u8 = u8(0)
 pub const max_u8 = u8(255)
 

vlib/builtin/int_d_new_int.v

@@ -1,7 +0,0 @@
-module builtin
-
-// str returns the value of the `int` as a `string`.
-// Example: assert int(-2020).str() == '-2020'
-pub fn int_str(n int) string {
-	return i64(n).str()
-}

vlib/builtin/js/int.js.v

@@ -11,15 +11,15 @@ pub const max_i16 = i16(32767)
 pub const min_i32 = i32(-2147483648)
 pub const max_i32 = i32(2147483647)
 
-pub const min_int = min_i32
-pub const max_int = max_i32
-
 // -9223372036854775808 is wrong, because C compilers parse literal values
 // without sign first, and 9223372036854775808 overflows i64, hence the
 // consecutive subtraction by 1
 pub const min_i64 = i64(-9223372036854775807 - 1)
 pub const max_i64 = i64(9223372036854775807)
 
+pub const min_int = int(min_i32)
+pub const max_int = int(max_i32)
+
 pub const min_u8 = u8(0)
 pub const max_u8 = u8(255)
 

vlib/builtin/string.v

@@ -1165,7 +1165,8 @@ pub fn (s string) split_by_space() []string {
 // Example: assert 'ABCD'.substr(1,3) == 'BC'
 @[direct_array_access]
 pub fn (s string) substr(start int, _end int) string {
-	end := if _end == max_int { s.len } else { _end } // max_int
+	// WARNNING: The is a temp solution for bootstrap!
+	end := if _end == max_i64 || _end == max_i32 { s.len } else { _end } // max_int
 	$if !no_bounds_checking {
 		if start > end || start > s.len || end > s.len || start < 0 || end < 0 {
 			panic('substr(' + impl_i64_to_string(start) + ', ' + impl_i64_to_string(end) +
@@ -1205,7 +1206,8 @@ pub fn (s string) substr_unsafe(start int, _end int) string {
 // return an error when the index is out of range
 @[direct_array_access]
 pub fn (s string) substr_with_check(start int, _end int) !string {
-	end := if _end == max_int { s.len } else { _end } // max_int
+	// WARNNING: The is a temp solution for bootstrap!
+	end := if _end == max_i64 || _end == max_i32 { s.len } else { _end } // max_int
 	if start > end || start > s.len || end > s.len || start < 0 || end < 0 {
 		return error('substr(' + impl_i64_to_string(start) + ', ' + impl_i64_to_string(end) +
 			') out of bounds (len=' + impl_i64_to_string(s.len) + ')')
@@ -1230,7 +1232,8 @@ pub fn (s string) substr_with_check(start int, _end int) !string {
 @[direct_array_access]
 pub fn (s string) substr_ni(_start int, _end int) string {
 	mut start := _start
-	mut end := if _end == max_int { s.len } else { _end } // max_int
+	// WARNNING: The is a temp solution for bootstrap!
+	mut end := if _end == max_i64 || _end == max_i32 { s.len } else { _end }
 
 	// borders math
 	if start < 0 {

vlib/builtin/string_interpolation.v

@@ -71,7 +71,7 @@ pub mut:
 	d_u16 u16
 	d_i16 i16
 	d_u32 u32
-	d_i32 int
+	d_i32 i32
 	d_u64 u64
 	d_i64 i64
 	d_f32 f32

vlib/builtin/wasm/wasi/int_notd_no_imports.v

@@ -16,15 +16,15 @@ pub const max_i16 = i16(32767)
 pub const min_i32 = i32(-2147483648)
 pub const max_i32 = i32(2147483647)
 
-pub const min_int = min_i32
-pub const max_int = max_i32
-
 // -9223372036854775808 is wrong, because C compilers parse literal values
 // without sign first, and 9223372036854775808 overflows i64, hence the
 // consecutive subtraction by 1
 pub const min_i64 = i64(-9223372036854775807 - 1)
 pub const max_i64 = i64(9223372036854775807)
 
+pub const min_int = int(min_i32)
+pub const max_int = int(max_i32)
+
 pub const min_u8 = u8(0)
 pub const max_u8 = u8(255)
 

vlib/json/tests/json_sumtype_test.v

@@ -105,3 +105,23 @@ fn test_sum_types() {
 	j := json.encode(animals[0])
 	assert j == '{"cat_name":"Whiskers","_type":"Cat"}'
 }
+
+type Value = string | i32
+
+struct Node {
+	value Value
+}
+
+fn test_sum_types_with_i32() {
+	data1 := json.encode([Node{i32(128)}, Node{'mystring'}])
+	assert data1 == '[{"value":128},{"value":"mystring"}]'
+
+	node := json.decode([]Node, data1) or {
+		println(err)
+		assert false
+		return
+	}
+	assert node.len == 2
+	assert node[0].value == Value(i32(128))
+	assert node[1].value == Value('mystring')
+}

vlib/math/limit.v

@@ -31,10 +31,7 @@ pub fn maxof[T]() T {
 	} $else $if T is f64 {
 		return max_f64
 	} $else $if T is int {
-		$if new_int ? {
-			return int(max_i64)
-		}
-		return int(max_i32)
+		return max_int
 	} $else {
 		panic('A maximum value of the type `' + typeof[T]().name + '` is not defined.')
 	}
@@ -68,10 +65,7 @@ pub fn minof[T]() T {
 	} $else $if T is f64 {
 		return -max_f64
 	} $else $if T is int {
-		$if new_int ? {
-			return int(min_i64)
-		}
-		return int(min_i32)
+		return min_int
 	} $else {
 		panic('A minimum value of the type `' + typeof[T]().name + '` is not defined.')
 	}

vlib/math/min_max_abs_test.v

@@ -20,3 +20,8 @@ fn test_abs() {
 	assert math.abs(1.2345) == 1.2345
 	assert math.abs(-5.5) == 5.5
 }
+
+fn test_max_min_int_has_type_of_int() {
+	assert math.max(int(100), min_int) == 100
+	assert math.min(int(100), max_int) == 100
+}

vlib/v/ast/ast.v

@@ -11,9 +11,9 @@ import v.pref
 import sync.stdatomic
 
 // V type names that cannot be used as global var name
-pub const global_reserved_type_names = ['byte', 'bool', 'char', 'i8', 'i16', 'int', 'i64', 'u8',
-	'u16', 'u32', 'u64', 'f32', 'f64', 'map', 'string', 'rune', 'usize', 'isize', 'voidptr', 'thread',
-	'array']
+pub const global_reserved_type_names = ['byte', 'bool', 'char', 'i8', 'i16', 'i32', 'int', 'i64',
+	'u8', 'u16', 'u32', 'u64', 'f32', 'f64', 'map', 'string', 'rune', 'usize', 'isize', 'voidptr',
+	'thread', 'array']
 
 pub const result_name = '_result'
 pub const option_name = '_option'
@@ -24,10 +24,9 @@ pub const builtins = ['string', 'array', 'DenseArray', 'map', 'Error', 'IError',
 
 pub type TypeDecl = AliasTypeDecl | FnTypeDecl | SumTypeDecl
 
-// pub const int_type_name = $if amd64 || arm64 {
-pub const int_type_name = $if new_int ? {
-	//'int'
-	'i64'
+pub const int_type_name = $if new_int ?
+	&& (arm64 || amd64 || rv64 || s390x || ppc64le || loongarch64) {
+	'vint_t'
 } $else {
 	'int'
 }
@@ -2816,7 +2815,7 @@ pub fn (expr Expr) is_literal() bool {
 		}
 		CastExpr {
 			!expr.has_arg && expr.expr.is_literal() && (expr.typ.is_any_kind_of_pointer()
-				|| expr.typ in [i8_type, i16_type, int_type, i64_type, u8_type, u16_type, u32_type, u64_type, f32_type, f64_type, char_type, bool_type, rune_type])
+				|| expr.typ in [i8_type, i16_type, i32_type, int_type, i64_type, u8_type, u16_type, u32_type, u64_type, f32_type, f64_type, char_type, bool_type, rune_type])
 		}
 		SizeOf, IsRefType {
 			expr.is_type || expr.expr.is_literal()

vlib/v/ast/table.v

@@ -1340,7 +1340,7 @@ pub fn (mut t Table) find_or_register_fn_type(f Fn, is_anon bool, has_decl bool)
 	)
 }
 
-pub fn (mut t Table) add_placeholder_type(name string, language Language) int {
+pub fn (mut t Table) add_placeholder_type(name string, cname string, language Language) int {
 	mut modname := ''
 	if name.contains('.') {
 		modname = name.all_before_last('.')
@@ -1348,7 +1348,7 @@ pub fn (mut t Table) add_placeholder_type(name string, language Language) int {
 	ph_type := TypeSymbol{
 		kind:       .placeholder
 		name:       name
-		cname:      util.no_dots(name).replace_each(['&', ''])
+		cname:      util.no_dots(cname).replace_each(['&', ''])
 		language:   language
 		mod:        modname
 		is_pub:     true
@@ -1591,7 +1591,7 @@ pub fn (mut t Table) bitsize_to_type(bit_size int) Type {
 			return i16_type
 		}
 		32 {
-			return int_type
+			return i32_type
 		}
 		64 {
 			return i64_type
@@ -1854,6 +1854,7 @@ pub fn (mut t Table) convert_generic_type(generic_type Type, generic_names []str
 			if sym.info.is_generic {
 				mut nrt := '${sym.name}['
 				mut rnrt := '${sym.rname}['
+				mut cnrt := '${sym.cname}['
 				mut t_generic_names := generic_names.clone()
 				mut t_to_types := to_types.clone()
 				if sym.generic_types.len > 0 && sym.generic_types.len == sym.info.generic_types.len
@@ -1886,9 +1887,11 @@ pub fn (mut t Table) convert_generic_type(generic_type Type, generic_names []str
 						}
 						nrt += gts.name
 						rnrt += gts.name
+						cnrt += gts.cname
 						if i != sym.info.generic_types.len - 1 {
 							nrt += ', '
 							rnrt += ', '
+							cnrt += ', '
 						}
 					} else {
 						return none
@@ -1896,11 +1899,12 @@ pub fn (mut t Table) convert_generic_type(generic_type Type, generic_names []str
 				}
 				nrt += ']'
 				rnrt += ']'
+				cnrt += ']'
 				mut idx := t.type_idxs[nrt]
 				if idx == 0 {
 					idx = t.type_idxs[rnrt]
 					if idx == 0 {
-						idx = t.add_placeholder_type(nrt, .v)
+						idx = t.add_placeholder_type(nrt, cnrt, .v)
 					}
 				}
 				return new_type(idx).derive_add_muls(generic_type).clear_flag(.generic)

vlib/v/ast/types.v

@@ -625,18 +625,46 @@ pub fn (typ Type) is_unsigned() bool {
 
 pub fn (typ Type) flip_signedness() Type {
 	return match typ {
-		i8_type { u8_type }
-		i16_type { u16_type }
-		int_type { u32_type }
-		i32_type { u32_type }
-		isize_type { usize_type }
-		i64_type { u64_type }
-		u8_type { i8_type }
-		u16_type { i16_type }
-		u32_type { int_type }
-		usize_type { isize_type }
-		u64_type { i64_type }
-		else { typ }
+		i8_type {
+			u8_type
+		}
+		i16_type {
+			u16_type
+		}
+		i32_type {
+			u32_type
+		}
+		i64_type {
+			u64_type
+		}
+		int_type {
+			$if new_int ? && (arm64 || amd64 || rv64 || s390x || ppc64le || loongarch64) {
+				u64_type
+			} $else {
+				u32_type
+			}
+		}
+		isize_type {
+			usize_type
+		}
+		u8_type {
+			i8_type
+		}
+		u16_type {
+			i16_type
+		}
+		u32_type {
+			i32_type
+		}
+		u64_type {
+			i64_type
+		}
+		usize_type {
+			isize_type
+		}
+		else {
+			void_type
+		}
 	}
 }
 
@@ -699,18 +727,18 @@ pub const error_type_idx = 30
 pub const nil_type_idx = 31
 
 // Note: builtin_type_names must be in the same order as the idx consts above
-pub const builtin_type_names = ['void', 'voidptr', 'byteptr', 'charptr', 'i8', 'i16', 'int', 'i64',
-	'isize', 'u8', 'u16', 'u32', 'u64', 'usize', 'f32', 'f64', 'char', 'bool', 'none', 'string',
-	'rune', 'array', 'map', 'chan', 'any', 'float_literal', 'int_literal', 'thread', 'Error', 'nil',
-	'i32']
+pub const builtin_type_names = ['void', 'voidptr', 'byteptr', 'charptr', 'i8', 'i16', 'i32', 'int',
+	'i64', 'isize', 'u8', 'u16', 'u32', 'u64', 'usize', 'f32', 'f64', 'char', 'bool', 'none',
+	'string', 'rune', 'array', 'map', 'chan', 'any', 'float_literal', 'int_literal', 'thread',
+	'Error', 'nil']
 
 pub const builtin_type_names_matcher = token.new_keywords_matcher_from_array_trie(builtin_type_names)
 
-pub const integer_type_idxs = [i8_type_idx, i16_type_idx, int_type_idx, i64_type_idx, u8_type_idx,
-	u16_type_idx, u32_type_idx, u64_type_idx, isize_type_idx, usize_type_idx, int_literal_type_idx,
-	rune_type_idx, i32_type_idx]
-pub const signed_integer_type_idxs = [char_type_idx, i8_type_idx, i16_type_idx, int_type_idx,
-	i64_type_idx, i32_type_idx, isize_type_idx]
+pub const integer_type_idxs = [i8_type_idx, i16_type_idx, i32_type_idx, int_type_idx, i64_type_idx,
+	u8_type_idx, u16_type_idx, u32_type_idx, u64_type_idx, isize_type_idx, usize_type_idx,
+	int_literal_type_idx, rune_type_idx]
+pub const signed_integer_type_idxs = [char_type_idx, i8_type_idx, i16_type_idx, i32_type_idx,
+	int_type_idx, i64_type_idx, isize_type_idx]
 pub const unsigned_integer_type_idxs = [u8_type_idx, u16_type_idx, u32_type_idx, u64_type_idx,
 	usize_type_idx]
 // C will promote any type smaller than int to int in an expression
@@ -1161,7 +1189,7 @@ pub fn (t &TypeSymbol) is_pointer() bool {
 
 @[inline]
 pub fn (t &TypeSymbol) is_int() bool {
-	res := t.kind in [.i8, .i16, .int, .i64, .i32, .isize, .u8, .u16, .u32, .u64, .usize,
+	res := t.kind in [.i8, .i16, .i32, .int, .i64, .isize, .u8, .u16, .u32, .u64, .usize,
 		.int_literal, .rune]
 	if !res && t.kind == .alias {
 		return (t.info as Alias).parent_type.is_int()
@@ -1232,14 +1260,9 @@ pub fn (t &Table) type_size(typ Type) (int, int) {
 			align = 4
 		}
 		.int {
-			$if new_int ? {
-				$if arm64 || amd64 {
-					size = 8
-					align = 8
-				} $else {
-					size = 4
-					align = 4
-				}
+			$if new_int ? && (arm64 || amd64 || rv64 || s390x || ppc64le || loongarch64) {
+				size = 8
+				align = 8
 			} $else {
 				size = 4
 				align = 4

vlib/v/checker/assign.v

@@ -746,14 +746,14 @@ or use an explicit `unsafe{ a[..] }`, if you do not want a copy of the slice.',
 				} else if left_type.is_unsigned() {
 					left_type
 				} else {
-					// signed types' idx adds with 5 will get correct relative unsigned type
-					// i8 		=> byte
-					// i16 		=> u16
-					// int  	=> u32
-					// i64  	=> u64
-					// isize	=> usize
-					// i128 	=> u128 NOT IMPLEMENTED YET
-					ast.idx_to_type(left_type.idx() + ast.u32_type_idx - ast.int_type_idx)
+					// signed types => unsigned types
+					unsigned_type := left_type.flip_signedness()
+					if unsigned_type == ast.void_type {
+						c.error('invalid operation: shift on type `${c.table.sym(left_type).name}`',
+							node.pos)
+						ast.void_type
+					}
+					unsigned_type
 				}
 
 				node = ast.AssignStmt{

vlib/v/checker/check_types.v

@@ -625,18 +625,46 @@ fn (mut c Checker) check_shift(mut node ast.InfixExpr, left_type_ ast.Type, righ
 						return left_type
 					}
 					moffset := match left_type_final {
-						ast.char_type { 7 }
-						ast.i8_type { 7 }
-						ast.i16_type { 15 }
-						ast.int_type { 31 }
-						ast.i64_type { 63 }
+						ast.char_type {
+							7
+						}
+						ast.i8_type {
+							7
+						}
+						ast.i16_type {
+							15
+						}
+						ast.i32_type {
+							31
+						}
+						ast.int_type {
+							$if new_int ?
+								&& (arm64 || amd64 || rv64 || s390x || ppc64le || loongarch64) {
+								63
+							} $else {
+								31
+							}
+						}
+						ast.i64_type {
+							63
+						}
 						//
-						ast.u8_type { 7 }
+						ast.u8_type {
+							7
+						}
 						// ast.u8_type { 7 }
-						ast.u16_type { 15 }
-						ast.u32_type { 31 }
-						ast.u64_type { 63 }
-						else { 64 }
+						ast.u16_type {
+							15
+						}
+						ast.u32_type {
+							31
+						}
+						ast.u64_type {
+							63
+						}
+						else {
+							64
+						}
 					}
 					if ival > moffset && !c.pref.translated && !c.file.is_translated {
 						c.error('shift count for type `${left_sym_final.name}` too large (maximum: ${moffset} bits)',

vlib/v/checker/checker.v

@@ -36,8 +36,8 @@ pub const fixed_array_builtin_methods = ['contains', 'index', 'any', 'all', 'wai
 	'sorted', 'sort_with_compare', 'sorted_with_compare', 'reverse', 'reverse_in_place', 'count']
 pub const fixed_array_builtin_methods_chk = token.new_keywords_matcher_from_array_trie(fixed_array_builtin_methods)
 // TODO: remove `byte` from this list when it is no longer supported
-pub const reserved_type_names = ['bool', 'char', 'i8', 'i16', 'int', 'i64', 'u8', 'u16', 'u32',
-	'u64', 'f32', 'f64', 'map', 'string', 'rune', 'usize', 'isize', 'voidptr', 'thread']
+pub const reserved_type_names = ['bool', 'char', 'i8', 'i16', 'i32', 'int', 'i64', 'u8', 'u16',
+	'u32', 'u64', 'f32', 'f64', 'map', 'string', 'rune', 'usize', 'isize', 'voidptr', 'thread']
 pub const reserved_type_names_chk = token.new_keywords_matcher_from_array_trie(reserved_type_names)
 pub const vroot_is_deprecated_message = '@VROOT is deprecated, use @VMODROOT or @VEXEROOT instead'
 
@@ -686,7 +686,7 @@ fn (mut c Checker) alias_type_decl(mut node ast.AliasTypeDecl) {
 		.voidptr, .byteptr, .charptr {}
 		.char, .rune, .bool {}
 		.string, .enum, .none, .any {}
-		.i8, .i16, .int, .i64, .isize {}
+		.i8, .i16, .i32, .int, .i64, .isize {}
 		.u8, .u16, .u32, .u64, .usize {}
 		.f32, .f64 {}
 		.interface {}
@@ -2048,9 +2048,16 @@ fn (mut c Checker) enum_decl(mut node ast.EnumDecl) {
 		ast.i16_type {
 			signed, enum_imin, enum_imax = true, min_i16, max_i16
 		}
-		ast.int_type {
+		ast.i32_type {
 			signed, enum_imin, enum_imax = true, min_i32, max_i32
 		}
+		ast.int_type {
+			$if new_int ? && (arm64 || amd64 || rv64 || s390x || ppc64le || loongarch64) {
+				signed, enum_imin, enum_imax = true, min_i32, max_i32
+			} $else {
+				signed, enum_imin, enum_imax = true, min_i64, max_i64
+			}
+		}
 		ast.i64_type {
 			signed, enum_imin, enum_imax = true, min_i64, max_i64
 		}
@@ -3795,9 +3802,16 @@ fn (mut c Checker) cast_expr(mut node ast.CastExpr) ast.Type {
 				ast.i16_type_idx {
 					u64(0xffff)
 				}
-				ast.int_type_idx, ast.i32_type_idx {
+				ast.i32_type_idx {
 					u64(0xffffffff)
 				}
+				ast.int_type_idx {
+					$if new_int ? && (arm64 || amd64 || rv64 || s390x || ppc64le || loongarch64) {
+						u64(0xffffffffffffffff)
+					} $else {
+						u64(0xffffffff)
+					}
+				}
 				ast.i64_type_idx {
 					u64(0xffffffffffffffff)
 				}

vlib/v/checker/fn.v

@@ -3427,7 +3427,7 @@ fn (mut c Checker) array_builtin_method_call(mut node ast.CallExpr, left_type as
 					'\ne.g. `users.${method_name}(a.id < b.id)`', node.pos)
 			}
 		} else if !(c.table.sym(elem_typ).has_method('<')
-			|| c.table.unalias_num_type(elem_typ) in [ast.int_type, ast.int_type.ref(), ast.string_type, ast.string_type.ref(), ast.i8_type, ast.i16_type, ast.i64_type, ast.u8_type, ast.rune_type, ast.u16_type, ast.u32_type, ast.u64_type, ast.f32_type, ast.f64_type, ast.char_type, ast.bool_type, ast.float_literal_type, ast.int_literal_type]) {
+			|| c.table.unalias_num_type(elem_typ) in [ast.int_type, ast.int_type.ref(), ast.string_type, ast.string_type.ref(), ast.i8_type, ast.i16_type, ast.i32_type, ast.i64_type, ast.u8_type, ast.rune_type, ast.u16_type, ast.u32_type, ast.u64_type, ast.f32_type, ast.f64_type, ast.char_type, ast.bool_type, ast.float_literal_type, ast.int_literal_type]) {
 			c.error('custom sorting condition must be supplied for type `${c.table.type_to_str(elem_typ)}`',
 				node.pos)
 		}
@@ -3778,7 +3778,7 @@ fn (mut c Checker) fixed_array_builtin_method_call(mut node ast.CallExpr, left_t
 					'\ne.g. `users.${method_name}(a.id < b.id)`', node.pos)
 			}
 		} else if !(c.table.sym(elem_typ).has_method('<')
-			|| c.table.unalias_num_type(elem_typ) in [ast.int_type, ast.int_type.ref(), ast.string_type, ast.string_type.ref(), ast.i8_type, ast.i16_type, ast.i64_type, ast.u8_type, ast.rune_type, ast.u16_type, ast.u32_type, ast.u64_type, ast.f32_type, ast.f64_type, ast.char_type, ast.bool_type, ast.float_literal_type, ast.int_literal_type]) {
+			|| c.table.unalias_num_type(elem_typ) in [ast.int_type, ast.int_type.ref(), ast.string_type, ast.string_type.ref(), ast.i8_type, ast.i16_type, ast.i32_type, ast.i64_type, ast.u8_type, ast.rune_type, ast.u16_type, ast.u32_type, ast.u64_type, ast.f32_type, ast.f64_type, ast.char_type, ast.bool_type, ast.float_literal_type, ast.int_literal_type]) {
 			c.error('custom sorting condition must be supplied for type `${c.table.type_to_str(elem_typ)}`',
 				node.pos)
 		}

vlib/v/checker/infix.v

@@ -651,22 +651,12 @@ fn (mut c Checker) infix_expr(mut node ast.InfixExpr) ast.Type {
 			} else if left_type.is_unsigned() {
 				left_type
 			} else {
-				// signed types' idx adds with 5 will get correct relative unsigned type
-				// i8 	=> byte
-				// i16 	=> u16
-				// int  	=> u32
-				// i64  	=> u64
-				// isize	=> usize
-				// i128 	=> u128 NOT IMPLEMENTED YET
-				ast.idx_to_type(match left_type.idx() {
-					ast.i8_type_idx { ast.u8_type_idx }
-					ast.i16_type_idx { ast.u16_type_idx }
-					ast.i32_type_idx { ast.u32_type_idx }
-					ast.int_type_idx { ast.u32_type_idx }
-					ast.i64_type_idx { ast.u64_type_idx }
-					ast.isize_type_idx { ast.usize_type_idx }
-					else { 0 }
-				})
+				unsigned_type := left_type.flip_signedness()
+				if unsigned_type == ast.void_type {
+					// signed type can't convert to an unsigned type
+					0
+				}
+				unsigned_type
 			}
 
 			if modified_left_type == 0 {

vlib/v/checker/match.v

@@ -390,11 +390,23 @@ fn (mut c Checker) match_expr(mut node ast.MatchExpr) ast.Type {
 											needs_explicit_cast = true
 										}
 									}
-									.i32, .int {
+									.i32 {
 										if !(num >= min_i32 && num <= max_i32) {
 											needs_explicit_cast = true
 										}
 									}
+									.int {
+										$if new_int ? && (arm64 || amd64 || rv64
+											|| s390x || ppc64le || loongarch64) {
+											if !(num >= min_i64 && num <= max_i64) {
+												needs_explicit_cast = true
+											}
+										} $else {
+											if !(num >= min_i32 && num <= max_i32) {
+												needs_explicit_cast = true
+											}
+										}
+									}
 									.i64 {
 										if !(num >= min_i64 && num <= max_i64) {
 											needs_explicit_cast = true

vlib/v/checker/tests/enum_field_overflow.out

@@ -1,11 +1,11 @@
-vlib/v/checker/tests/enum_field_overflow.vv:3:10: error: enum value `2147483647` overflows the enum type `int`, values of which have to be in [-2147483648, 2147483647]
-    1 | enum Color {
+vlib/v/checker/tests/enum_field_overflow.vv:3:10: error: enum value `2147483647` overflows the enum type `i32`, values of which have to be in [-2147483648, 2147483647]
+    1 | enum Color as i32 {
     2 |     red
     3 |     green = 2147483647
       |             ~~~~~~~~~~
     4 |     blue
     5 | }
-vlib/v/checker/tests/enum_field_overflow.vv:4:2: error: enum value overflows type `int`, which has a maximum value of 2147483647
+vlib/v/checker/tests/enum_field_overflow.vv:4:2: error: enum value overflows type `i32`, which has a maximum value of 2147483647
     2 |     red
     3 |     green = 2147483647
     4 |     blue

vlib/v/checker/tests/enum_field_overflow.vv

@@ -1,4 +1,4 @@
-enum Color {
+enum Color as i32 {
 	red
 	green = 2147483647
 	blue

vlib/v/checker/tests/enum_field_value_overflow.out

@@ -1,5 +1,5 @@
-vlib/v/checker/tests/enum_field_value_overflow.vv:3:10: error: enum value `2147483648` overflows the enum type `int`, values of which have to be in [-2147483648, 2147483647]
-    1 | enum Color {
+vlib/v/checker/tests/enum_field_value_overflow.vv:3:10: error: enum value `2147483648` overflows the enum type `i32`, values of which have to be in [-2147483648, 2147483647]
+    1 | enum Color as i32 {
     2 |     red
     3 |     green = 2147483648
       |             ~~~~~~~~~~
@@ -40,8 +40,8 @@ vlib/v/checker/tests/enum_field_value_overflow.vv:21:10: error: enum value `3276
       |             ~~~~~
    22 |     blue
    23 | }
-vlib/v/checker/tests/enum_field_value_overflow.vv:27:10: error: enum value `2147483648` overflows the enum type `int`, values of which have to be in [-2147483648, 2147483647]
-   25 | enum ColorI32 {
+vlib/v/checker/tests/enum_field_value_overflow.vv:27:10: error: enum value `2147483648` overflows the enum type `i32`, values of which have to be in [-2147483648, 2147483647]
+   25 | enum ColorI32 as i32 {
    26 |     red
    27 |     green = 2147483648
       |             ~~~~~~~~~~

vlib/v/checker/tests/enum_field_value_overflow.vv

@@ -1,4 +1,4 @@
-enum Color {
+enum Color as i32 {
 	red
 	green = 2147483648
 	blue
@@ -22,7 +22,7 @@ enum ColorI16 as i16 {
 	blue
 }
 
-enum ColorI32 {
+enum ColorI32 as i32 {
 	red
 	green = 2147483648
 	blue

vlib/v/gen/c/array.v

@@ -117,11 +117,11 @@ fn (mut g Gen) fixed_array_init(node ast.ArrayInit, array_type Type, var_name st
 		g.writeln2(';', '{')
 		g.indent++
 		g.writeln('${elem_typ_str}* pelem = (${elem_typ_str}*)${past.tmp_var};')
-		g.writeln('int _len = (int)sizeof(${past.tmp_var}) / sizeof(${elem_typ_str});')
-		g.writeln('for (int index=0; index<_len; index++, pelem++) {')
+		g.writeln('${ast.int_type_name} _len = (${ast.int_type_name})sizeof(${past.tmp_var}) / sizeof(${elem_typ_str});')
+		g.writeln('for (${ast.int_type_name} index=0; index<_len; index++, pelem++) {')
 		g.set_current_pos_as_last_stmt_pos()
 		g.indent++
-		g.writeln('int it = index;') // FIXME: Remove this line when it is fully forbidden
+		g.writeln('${ast.int_type_name} it = index;') // FIXME: Remove this line when it is fully forbidden
 		g.write('*pelem = ')
 		g.expr_with_init(node)
 		g.writeln(';')
@@ -354,10 +354,10 @@ fn (mut g Gen) array_init_with_fields(node ast.ArrayInit, elem_type Type, is_amp
 		g.writeln2(';', '{')
 		g.indent++
 		g.writeln('${elem_typ}* pelem = (${elem_typ}*)${past.tmp_var}.data;')
-		g.writeln('for (int index=0; index<${past.tmp_var}.len; index++, pelem++) {')
+		g.writeln('for (${ast.int_type_name} index=0; index<${past.tmp_var}.len; index++, pelem++) {')
 		g.set_current_pos_as_last_stmt_pos()
 		g.indent++
-		g.writeln('int it = index;') // FIXME: Remove this line when it is fully forbidden
+		g.writeln('${ast.int_type_name} it = index;') // FIXME: Remove this line when it is fully forbidden
 		if elem_type.unaliased_sym.kind != .array_fixed {
 			g.write('*pelem = ')
 			g.expr_with_init(node)
@@ -423,7 +423,7 @@ fn (mut g Gen) array_init_with_fields(node ast.ArrayInit, elem_type Type, is_amp
 		g.expr(node.len_expr)
 		g.writeln(') * sizeof(${elem_styp}));')
 		ind := g.new_tmp_var()
-		g.write('for (int ${ind}=0; ${ind}<')
+		g.write('for (${ast.int_type_name} ${ind}=0; ${ind}<')
 		g.expr(node.len_expr)
 		g.writeln('; ${ind}++) {')
 		g.write('\t${tmp}[${ind}] = ')
@@ -565,7 +565,7 @@ fn (mut g Gen) gen_array_map(node ast.CallExpr) {
 	}
 
 	i := g.new_tmp_var()
-	g.writeln('for (int ${i} = 0; ${i} < ${past.tmp_var}_len; ++${i}) {')
+	g.writeln('for (${ast.int_type_name} ${i} = 0; ${i} < ${past.tmp_var}_len; ++${i}) {')
 	g.indent++
 	var_name := g.get_array_expr_param_name(mut expr)
 	is_auto_heap := expr is ast.CastExpr && (expr.expr is ast.Ident && expr.expr.is_auto_heap())
@@ -958,7 +958,7 @@ fn (mut g Gen) gen_fixed_array_reverse_in_place(node ast.CallExpr) {
 	i := g.new_tmp_var()
 	left_var := g.expr_string(node.left)
 	g.empty_line = true
-	g.writeln('for (int ${i} = 0; ${i} < ${info.size}/2; ++${i}) {')
+	g.writeln('for (${ast.int_type_name} ${i} = 0; ${i} < ${info.size}/2; ++${i}) {')
 	g.writeln('\tmemcpy(&${tmp_var}, &${left_var}[${i}], sizeof(${elem_styp}));')
 	g.writeln('\tmemcpy(&${left_var}[${i}], &${left_var}[${info.size}-${i}-1], sizeof(${elem_styp}));')
 	g.writeln('\tmemcpy(&${left_var}[${info.size}-${i}-1], &${tmp_var}, sizeof(${elem_styp}));')
@@ -995,7 +995,7 @@ fn (mut g Gen) gen_array_filter(node ast.CallExpr) {
 	}
 
 	i := g.new_tmp_var()
-	g.writeln('for (int ${i} = 0; ${i} < ${past.tmp_var}_len; ++${i}) {')
+	g.writeln('for (${ast.int_type_name} ${i} = 0; ${i} < ${past.tmp_var}_len; ++${i}) {')
 	g.indent++
 	g.write_prepared_var(var_name, info.elem_type, elem_type_str, past.tmp_var, i, true,
 		false)
@@ -1133,10 +1133,6 @@ fn (mut g Gen) get_array_contains_method(typ ast.Type) string {
 
 fn (mut g Gen) gen_array_contains_methods() {
 	mut done := []ast.Type{}
-	mut got_int_str := false
-	$if new_int ? {
-		println(g.array_contains_types)
-	}
 	for t in g.array_contains_types {
 		left_final_sym := g.table.final_sym(t)
 		if left_final_sym.idx in done || g.table.sym(t).has_method('contains') {
@@ -1147,20 +1143,6 @@ fn (mut g Gen) gen_array_contains_methods() {
 		mut left_type_str := g.styp(t)
 		fn_name := '${left_type_str}_contains'
 
-		$if new_int ? {
-			if fn_name == 'Array_i64_contains' {
-				if got_int_str {
-					continue
-				} else {
-					got_int_str = true
-				}
-			}
-
-			// if t == ast.int_type_idx || t == ast.i64_type_idx {
-			// continue
-			//}
-		}
-
 		if left_final_sym.kind == .array {
 			elem_type := (left_final_sym.info as ast.Array).elem_type
 			mut elem_type_str := g.styp(elem_type)
@@ -1172,7 +1154,7 @@ fn (mut g Gen) gen_array_contains_methods() {
 			}
 			g.type_definitions.writeln('${g.static_non_parallel}bool ${fn_name}(${left_type_str} a, ${elem_type_str} v);')
 			fn_builder.writeln('${g.static_non_parallel}bool ${fn_name}(${left_type_str} a, ${elem_type_str} v) {')
-			fn_builder.writeln('\tfor (int i = 0; i < a.len; ++i) {')
+			fn_builder.writeln('\tfor (${ast.int_type_name} i = 0; i < a.len; ++i) {')
 			if elem_kind == .string {
 				fn_builder.writeln('\t\tif (builtin__fast_string_eq(((string*)a.data)[i], v)) {')
 			} else if elem_kind in [.array, .array_fixed] && elem_is_not_ptr {
@@ -1214,7 +1196,7 @@ fn (mut g Gen) gen_array_contains_methods() {
 			}
 			g.type_definitions.writeln('${g.static_non_parallel}bool ${fn_name}(${left_type_str} a, ${elem_type_str} v);')
 			fn_builder.writeln('${g.static_non_parallel}bool ${fn_name}(${left_type_str} a, ${elem_type_str} v) {')
-			fn_builder.writeln('\tfor (int i = 0; i < ${size}; ++i) {')
+			fn_builder.writeln('\tfor (${ast.int_type_name} i = 0; i < ${size}; ++i) {')
 			if elem_kind == .string {
 				fn_builder.writeln('\t\tif (builtin__fast_string_eq(a[i], v)) {')
 			} else if elem_kind in [.array, .array_fixed] && elem_is_not_ptr {
@@ -1318,10 +1300,10 @@ fn (mut g Gen) gen_array_index_methods() {
 				left_type_str = 'Array_voidptr'
 				elem_type_str = 'voidptr'
 			}
-			g.type_definitions.writeln('${g.static_non_parallel}int ${fn_name}(${left_type_str} a, ${elem_type_str} v);')
-			fn_builder.writeln('${g.static_non_parallel}int ${fn_name}(${left_type_str} a, ${elem_type_str} v) {')
+			g.type_definitions.writeln('${g.static_non_parallel}${ast.int_type_name} ${fn_name}(${left_type_str} a, ${elem_type_str} v);')
+			fn_builder.writeln('${g.static_non_parallel}${ast.int_type_name} ${fn_name}(${left_type_str} a, ${elem_type_str} v) {')
 			fn_builder.writeln('\t${elem_type_str}* pelem = a.data;')
-			fn_builder.writeln('\tfor (int i = 0; i < a.len; ++i, ++pelem) {')
+			fn_builder.writeln('\tfor (${ast.int_type_name} i = 0; i < a.len; ++i, ++pelem) {')
 			if elem_sym.kind == .string {
 				fn_builder.writeln('\t\tif (builtin__fast_string_eq(*pelem, v)) {')
 			} else if elem_sym.kind in [.array, .array_fixed] && !info.elem_type.is_ptr() {
@@ -1362,9 +1344,9 @@ fn (mut g Gen) gen_array_index_methods() {
 			if elem_sym.kind == .function {
 				elem_type_str = 'voidptr'
 			}
-			g.type_definitions.writeln('${g.static_non_parallel}int ${fn_name}(${left_type_str} a, ${elem_type_str} v);')
-			fn_builder.writeln('${g.static_non_parallel}int ${fn_name}(${left_type_str} a, ${elem_type_str} v) {')
-			fn_builder.writeln('\tfor (int i = 0; i < ${info.size}; ++i) {')
+			g.type_definitions.writeln('${g.static_non_parallel}${ast.int_type_name} ${fn_name}(${left_type_str} a, ${elem_type_str} v);')
+			fn_builder.writeln('${g.static_non_parallel}${ast.int_type_name} ${fn_name}(${left_type_str} a, ${elem_type_str} v) {')
+			fn_builder.writeln('\tfor (${ast.int_type_name} i = 0; i < ${info.size}; ++i) {')
 			if elem_sym.kind == .string {
 				fn_builder.writeln('\t\tif (builtin__fast_string_eq(a[i], v)) {')
 			} else if elem_sym.kind in [.array, .array_fixed] && !info.elem_type.is_ptr() {
@@ -1499,7 +1481,7 @@ fn (mut g Gen) gen_array_any(node ast.CallExpr) {
 		}
 	}
 	i := g.new_tmp_var()
-	g.writeln('for (int ${i} = 0; ${i} < ${past.tmp_var}_len; ++${i}) {')
+	g.writeln('for (${ast.int_type_name} ${i} = 0; ${i} < ${past.tmp_var}_len; ++${i}) {')
 	g.indent++
 
 	g.write_prepared_var(var_name, elem_type, elem_type_str, past.tmp_var, i, left_is_array,
@@ -1577,7 +1559,8 @@ fn (mut g Gen) gen_array_count(node ast.CallExpr) {
 		(sym.info as ast.ArrayFixed).elem_type
 	}
 	elem_type_str := g.styp(elem_type)
-	has_infix_left_var_name := g.write_prepared_tmp_value(past.tmp_var, node, 'int', '0')
+	has_infix_left_var_name := g.write_prepared_tmp_value(past.tmp_var, node, ast.int_type_name,
+		'0')
 
 	mut expr := node.args[0].expr
 	var_name := g.get_array_expr_param_name(mut expr)
@@ -1590,7 +1573,7 @@ fn (mut g Gen) gen_array_count(node ast.CallExpr) {
 		}
 	}
 	i := g.new_tmp_var()
-	g.writeln('for (int ${i} = 0; ${i} < ${past.tmp_var}_len; ++${i}) {')
+	g.writeln('for (${ast.int_type_name} ${i} = 0; ${i} < ${past.tmp_var}_len; ++${i}) {')
 	g.indent++
 
 	g.write_prepared_var(var_name, elem_type, elem_type_str, past.tmp_var, i, left_is_array,
@@ -1684,7 +1667,7 @@ fn (mut g Gen) gen_array_all(node ast.CallExpr) {
 		}
 	}
 
-	g.writeln('for (int ${i} = 0; ${i} < ${past.tmp_var}_len; ++${i}) {')
+	g.writeln('for (${ast.int_type_name} ${i} = 0; ${i} < ${past.tmp_var}_len; ++${i}) {')
 	g.indent++
 	g.write_prepared_var(var_name, elem_type, elem_type_str, past.tmp_var, i, left_is_array,
 		false)
@@ -1774,7 +1757,7 @@ fn (mut g Gen) write_prepared_tmp_value(tmp string, node &ast.CallExpr, tmp_styp
 			g.write('->val')
 		}
 		g.writeln(';')
-		g.writeln('int ${tmp}_len = ${tmp}_orig.len;')
+		g.writeln('${ast.int_type_name} ${tmp}_len = ${tmp}_orig.len;')
 	} else if left_sym.kind == .array_fixed {
 		left_info := left_sym.info as ast.ArrayFixed
 		left_styp := g.styp(left_type)
@@ -1792,7 +1775,7 @@ fn (mut g Gen) write_prepared_tmp_value(tmp string, node &ast.CallExpr, tmp_styp
 			}
 		}
 		g.writeln(', sizeof(${left_styp}));')
-		g.writeln('int ${tmp}_len = ${left_info.size};')
+		g.writeln('${ast.int_type_name} ${tmp}_len = ${left_info.size};')
 	}
 	return has_infix_left_var_name
 }

vlib/v/gen/c/assign.v

@@ -1386,7 +1386,7 @@ fn (mut g Gen) gen_cross_tmp_variable(left []ast.Expr, val ast.Expr) {
 					if resolved_sym.is_builtin() && !fn_name.starts_with('builtin__') {
 						fn_name = 'builtin__${fn_name}'
 					}
-				} else if rec_typ_name in ['int_literal', 'float_literal'] {
+				} else if rec_typ_name in ['int_literal', 'float_literal', 'vint_t'] {
 					fn_name = 'builtin__${fn_name}'
 				}
 				g.write('${fn_name}(&')

vlib/v/gen/c/auto_eq_methods.v

@@ -384,7 +384,7 @@ fn (mut g Gen) gen_array_equality_fn(left_type ast.Type) string {
 	fn_builder.writeln('\tif (${left_len} != ${right_len}) {')
 	fn_builder.writeln('\t\treturn false;')
 	fn_builder.writeln('\t}')
-	fn_builder.writeln('\tfor (int i = 0; i < ${left_len}; ++i) {')
+	fn_builder.writeln('\tfor (${ast.int_type_name} i = 0; i < ${left_len}; ++i) {')
 	// compare every pair of elements of the two arrays
 	if elem.sym.kind == .string {
 		fn_builder.writeln('\t\tif (!builtin__string__eq(*((${ptr_elem_styp}*)((byte*)${left_data}+(i*${left_elem}))), *((${ptr_elem_styp}*)((byte*)${right_data}+(i*${right_elem}))))) {')
@@ -473,7 +473,7 @@ fn (mut g Gen) gen_fixed_array_equality_fn(left_type ast.Type) string {
 		fn_builder.writeln('\t\treturn true;')
 		fn_builder.writeln('\t}')
 	}
-	fn_builder.writeln('\tfor (int i = 0; i < ${size}; ++i) {')
+	fn_builder.writeln('\tfor (${ast.int_type_name} i = 0; i < ${size}; ++i) {')
 	// compare every pair of elements of the two fixed arrays
 	if elem.sym.kind == .string {
 		fn_builder.writeln('\t\tif (!builtin__string__eq(((string*)${left})[i], ((string*)${right})[i])) {')
@@ -538,7 +538,7 @@ fn (mut g Gen) gen_map_equality_fn(left_type ast.Type) string {
 	fn_builder.writeln('\tif (${left_len} != ${right_len}) {')
 	fn_builder.writeln('\t\treturn false;')
 	fn_builder.writeln('\t}')
-	fn_builder.writeln('\tfor (int i = 0; i < ${key_values}.len; ++i) {')
+	fn_builder.writeln('\tfor (${ast.int_type_name} i = 0; i < ${key_values}.len; ++i) {')
 	fn_builder.writeln('\t\tif (!builtin__DenseArray_has_index(&${key_values}, i)) continue;')
 	fn_builder.writeln('\t\tvoidptr k = builtin__DenseArray_key(&${key_values}, i);')
 	fn_builder.writeln('\t\tif (!builtin__map_exists(${b}, k)) return false;')
@@ -628,7 +628,7 @@ fn (mut g Gen) gen_interface_equality_fn(left_type ast.Type) string {
 
 	fn_builder.writeln('${g.static_non_parallel}inline bool ${fn_name}_interface_eq(${ptr_styp} a, ${ptr_styp} b) {')
 	fn_builder.writeln('\tif (${left_arg} == ${right_arg}) {')
-	fn_builder.writeln('\t\tint idx = v_typeof_interface_idx_${idx_fn}(${left_arg});')
+	fn_builder.writeln('\t\tu32 idx = v_typeof_interface_idx_${idx_fn}(${left_arg});')
 	if info is ast.Interface {
 		for typ in info.types {
 			sym := g.table.sym(typ.set_nr_muls(0))

vlib/v/gen/c/auto_free_methods.v

@@ -188,7 +188,7 @@ fn (mut g Gen) gen_free_for_array(info ast.Array, styp string, fn_name string) {
 
 	sym := g.table.sym(g.unwrap_generic(info.elem_type))
 	if sym.kind in [.string, .array, .map, .struct] {
-		fn_builder.writeln('\tfor (int i = 0; i < it->len; i++) {')
+		fn_builder.writeln('\tfor (${ast.int_type_name} i = 0; i < it->len; i++) {')
 
 		mut elem_styp := g.styp(info.elem_type).replace('*', '')
 		mut elem_styp_fn_name := if sym.has_method('free') {

vlib/v/gen/c/auto_str_methods.v

@@ -16,23 +16,9 @@ fn (mut g Gen) gen_str_default(sym ast.TypeSymbol, styp string, str_fn_name stri
 	}
 	mut convertor := ''
 	mut typename_ := ''
-	mut got_int_str := false
 	if sym.parent_idx in ast.integer_type_idxs {
 		convertor = 'int'
 		typename_ = 'int'
-		$if new_int ? {
-			if str_fn_name == 'i64_str' {
-				if got_int_str {
-					return
-				} else {
-					got_int_str = true
-				}
-			}
-
-			// if sym.parent_idx == ast.int_type_idx {
-			// return
-			//}
-		}
 	} else if sym.parent_idx == ast.f32_type_idx {
 		convertor = 'float'
 		typename_ = 'f32'
@@ -202,8 +188,8 @@ fn (mut g Gen) gen_str_for_option(typ ast.Type, styp string, str_fn_name string)
 
 	g.definitions.writeln('string ${str_fn_name}(${styp} it);')
 	g.auto_str_funcs.writeln('string ${str_fn_name}(${styp} it) { return indent_${str_fn_name}(it, 0); }')
-	g.definitions.writeln('string indent_${str_fn_name}(${styp} it, int indent_count);')
-	g.auto_str_funcs.writeln('string indent_${str_fn_name}(${styp} it, int indent_count) {')
+	g.definitions.writeln('string indent_${str_fn_name}(${styp} it, ${ast.int_type_name} indent_count);')
+	g.auto_str_funcs.writeln('string indent_${str_fn_name}(${styp} it, ${ast.int_type_name} indent_count) {')
 	g.auto_str_funcs.writeln('\tstring res;')
 	g.auto_str_funcs.writeln('\tif (it.state == 0) {')
 	deref := if typ.is_ptr() && !typ.has_flag(.option_mut_param_t) {
@@ -255,8 +241,8 @@ fn (mut g Gen) gen_str_for_result(typ ast.Type, styp string, str_fn_name string)
 
 	g.definitions.writeln('string ${str_fn_name}(${styp} it);')
 	g.auto_str_funcs.writeln('string ${str_fn_name}(${styp} it) { return indent_${str_fn_name}(it, 0); }')
-	g.definitions.writeln('string indent_${str_fn_name}(${styp} it, int indent_count);')
-	g.auto_str_funcs.writeln('string indent_${str_fn_name}(${styp} it, int indent_count) {')
+	g.definitions.writeln('string indent_${str_fn_name}(${styp} it, ${ast.int_type_name} indent_count);')
+	g.auto_str_funcs.writeln('string indent_${str_fn_name}(${styp} it, ${ast.int_type_name} indent_count) {')
 	g.auto_str_funcs.writeln('\tstring res;')
 	g.auto_str_funcs.writeln('\tif (!it.is_error) {')
 	if sym.kind == .string {
@@ -292,8 +278,8 @@ fn (mut g Gen) gen_str_for_alias(info ast.Alias, styp string, str_fn_name string
 
 	g.definitions.writeln('${g.static_non_parallel}string ${str_fn_name}(${arg_def});')
 	g.auto_str_funcs.writeln('${g.static_non_parallel}string ${str_fn_name}(${arg_def}) { return indent_${str_fn_name}(it, 0); }')
-	g.definitions.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${arg_def}, int indent_count);')
-	g.auto_str_funcs.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${arg_def}, int indent_count) {')
+	g.definitions.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${arg_def}, ${ast.int_type_name} indent_count);')
+	g.auto_str_funcs.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${arg_def}, ${ast.int_type_name} indent_count) {')
 	old := g.reset_tmp_count()
 	defer { g.tmp_count = old }
 	g.auto_str_funcs.writeln('\tstring indents = builtin__string_repeat(_S("    "), indent_count);')
@@ -373,7 +359,7 @@ fn (mut g Gen) gen_str_for_enum(info ast.Enum, styp string, str_fn_name string)
 	if info.is_flag {
 		clean_name := util.strip_main_name(styp.replace('__', '.'))
 		g.auto_str_funcs.writeln('\tstring ret = _S("${clean_name}{");')
-		g.auto_str_funcs.writeln('\tint first = 1;')
+		g.auto_str_funcs.writeln('\t${ast.int_type_name} first = 1;')
 		g.auto_str_funcs.writeln('\tu64 zit = (u64)it;')
 		for i, val in info.vals {
 			mask := u64(1) << i
@@ -413,10 +399,10 @@ fn (mut g Gen) gen_str_for_interface(info ast.Interface, styp string, typ_str st
 	// _str() functions should have a single argument, the indenting ones take 2:
 	g.definitions.writeln('${g.static_non_parallel}string ${str_fn_name}(${styp} x);')
 	g.auto_str_funcs.writeln('${g.static_non_parallel}string ${str_fn_name}(${styp} x) { return indent_${str_fn_name}(x, 0); }')
-	g.definitions.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${styp} x, int indent_count);')
+	g.definitions.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${styp} x, ${ast.int_type_name} indent_count);')
 	mut fn_builder := strings.new_builder(512)
 	clean_interface_v_type_name := util.strip_main_name(typ_str)
-	fn_builder.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${styp} x, int indent_count) { /* gen_str_for_interface */')
+	fn_builder.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${styp} x, ${ast.int_type_name} indent_count) { /* gen_str_for_interface */')
 	for typ in info.types {
 		sub_sym := g.table.sym(ast.mktyp(typ))
 		if g.pref.skip_unused && sub_sym.idx !in g.table.used_features.used_syms {
@@ -473,9 +459,9 @@ fn (mut g Gen) gen_str_for_union_sum_type(info ast.SumType, styp string, typ_str
 	// _str() functions should have a single argument, the indenting ones take 2:
 	g.definitions.writeln('${g.static_non_parallel}string ${str_fn_name}(${styp} x);')
 	g.auto_str_funcs.writeln('${g.static_non_parallel}string ${str_fn_name}(${styp} x) { return indent_${str_fn_name}(x, 0); }')
-	g.definitions.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${styp} x, int indent_count);')
+	g.definitions.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${styp} x, ${ast.int_type_name} indent_count);')
 	mut fn_builder := strings.new_builder(512)
-	fn_builder.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${styp} x, int indent_count) {')
+	fn_builder.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${styp} x, ${ast.int_type_name} indent_count) {')
 	mut clean_sum_type_v_type_name := ''
 	if info.is_anon {
 		variant_names := info.variants.map(util.strip_main_name(g.table.sym(it).name))
@@ -632,11 +618,11 @@ fn (mut g Gen) gen_str_for_array(info ast.Array, styp string, str_fn_name string
 
 	g.definitions.writeln('${g.static_non_parallel}string ${str_fn_name}(${styp} a);')
 	g.auto_str_funcs.writeln('${g.static_non_parallel}string ${str_fn_name}(${styp} a) { return indent_${str_fn_name}(a, 0);}')
-	g.definitions.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${styp} a, int indent_count);')
-	g.auto_str_funcs.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${styp} a, int indent_count) {')
+	g.definitions.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${styp} a, ${ast.int_type_name} indent_count);')
+	g.auto_str_funcs.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${styp} a, ${ast.int_type_name} indent_count) {')
 	g.auto_str_funcs.writeln('\tstrings__Builder sb = strings__new_builder(2 + a.len * 10);')
 	g.auto_str_funcs.writeln('\tstrings__Builder_write_string(&sb, _S("["));')
-	g.auto_str_funcs.writeln('\tfor (int i = 0; i < a.len; ++i) {')
+	g.auto_str_funcs.writeln('\tfor (${ast.int_type_name} i = 0; i < a.len; ++i) {')
 	if sym.kind == .function {
 		g.auto_str_funcs.writeln('\t\tstring x = ${elem_str_fn_name}();')
 	} else {
@@ -739,11 +725,11 @@ fn (mut g Gen) gen_str_for_array_fixed(info ast.ArrayFixed, styp string, str_fn_
 
 	g.definitions.writeln('${g.static_non_parallel}string ${str_fn_name}(${def_arg});')
 	g.auto_str_funcs.writeln('${g.static_non_parallel}string ${str_fn_name}(${def_arg}) { return indent_${str_fn_name}(a, 0);}')
-	g.definitions.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${def_arg}, int indent_count);')
-	g.auto_str_funcs.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${def_arg}, int indent_count) {')
+	g.definitions.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${def_arg}, ${ast.int_type_name} indent_count);')
+	g.auto_str_funcs.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${def_arg}, ${ast.int_type_name} indent_count) {')
 	g.auto_str_funcs.writeln('\tstrings__Builder sb = strings__new_builder(2 + ${info.size} * 10);')
 	g.auto_str_funcs.writeln('\tstrings__Builder_write_string(&sb, _S("["));')
-	g.auto_str_funcs.writeln('\tfor (int i = 0; i < ${info.size}; ++i) {')
+	g.auto_str_funcs.writeln('\tfor (${ast.int_type_name} i = 0; i < ${info.size}; ++i) {')
 	if sym.kind == .function {
 		g.auto_str_funcs.writeln('\t\tstring x = ${elem_str_fn_name}();')
 		g.auto_str_funcs.writeln('\t\tstrings__Builder_write_string(&sb, x);')
@@ -826,12 +812,12 @@ fn (mut g Gen) gen_str_for_map(info ast.Map, styp string, str_fn_name string) {
 
 	g.definitions.writeln('${g.static_non_parallel}string ${str_fn_name}(${styp} m);')
 	g.auto_str_funcs.writeln('${g.static_non_parallel}string ${str_fn_name}(${styp} m) { return indent_${str_fn_name}(m, 0);}')
-	g.definitions.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${styp} m, int indent_count);')
-	g.auto_str_funcs.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${styp} m, int indent_count) { /* gen_str_for_map */')
+	g.definitions.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${styp} m, ${ast.int_type_name} indent_count);')
+	g.auto_str_funcs.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${styp} m, ${ast.int_type_name} indent_count) { /* gen_str_for_map */')
 	g.auto_str_funcs.writeln('\tstrings__Builder sb = strings__new_builder(2 + m.key_values.len * 10);')
 	g.auto_str_funcs.writeln('\tstrings__Builder_write_string(&sb, _S("{"));')
 	g.auto_str_funcs.writeln('\tbool is_first = true;')
-	g.auto_str_funcs.writeln('\tfor (int i = 0; i < m.key_values.len; ++i) {')
+	g.auto_str_funcs.writeln('\tfor (${ast.int_type_name} i = 0; i < m.key_values.len; ++i) {')
 	g.auto_str_funcs.writeln('\t\tif (!builtin__DenseArray_has_index(&m.key_values, i)) { continue; }')
 	g.auto_str_funcs.writeln('\t\telse if (!is_first) { strings__Builder_write_string(&sb, _S(", ")); }')
 
@@ -937,7 +923,11 @@ fn (g &Gen) type_to_fmt(typ ast.Type) StrIntpType {
 		}
 		return .si_g64
 	} else if sym.kind == .int {
-		return .si_i32
+		$if new_int ? && (arm64 || amd64 || rv64 || s390x || ppc64le || loongarch64) {
+			return .si_i64
+		} $else {
+			return .si_i32
+		}
 	} else if sym.kind == .u32 {
 		return .si_u32
 	} else if sym.kind == .u64 {
@@ -961,12 +951,12 @@ fn (mut g Gen) gen_str_for_struct(info ast.Struct, lang ast.Language, styp strin
 	arg_def := if is_c_struct { '${styp}* it' } else { '${styp} it' }
 	g.definitions.writeln('${g.static_non_parallel}string ${str_fn_name}(${arg_def});')
 	g.auto_str_funcs.writeln('${g.static_non_parallel}string ${str_fn_name}(${arg_def}) { return indent_${str_fn_name}(it, 0);}')
-	g.definitions.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${arg_def}, int indent_count);')
+	g.definitions.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${arg_def}, ${ast.int_type_name} indent_count);')
 	mut fn_builder := strings.new_builder(512)
 	defer {
 		g.auto_fn_definitions << fn_builder.str()
 	}
-	fn_builder.writeln('string indent_${str_fn_name}(${arg_def}, int indent_count) {')
+	fn_builder.writeln('string indent_${str_fn_name}(${arg_def}, ${ast.int_type_name} indent_count) {')
 	old := g.reset_tmp_count()
 	defer { g.tmp_count = old }
 	clean_struct_v_type_name := if info.is_anon { 'struct ' } else { util.strip_main_name(typ_str) }
@@ -1321,7 +1311,7 @@ fn (mut g Gen) gen_enum_static_from_string(fn_name string, mod_enum_name string,
 	for field_val in enum_field_vals {
 		fn_builder.writeln('\tbuiltin__array_push((array*)&field_vals, _MOV((i64[]){ ${field_val} }));')
 	}
-	fn_builder.writeln('\tfor (int i = 0; i < ${enum_field_names.len}; ++i) {')
+	fn_builder.writeln('\tfor (${ast.int_type_name} i = 0; i < ${enum_field_names.len}; ++i) {')
 	fn_builder.writeln('\t\tif (builtin__fast_string_eq(name, (*(string*)builtin__array_get(field_names, i)))) {')
 	fn_builder.writeln('\t\t\texists = true;')
 	fn_builder.writeln('\t\t\tinx = i;')

vlib/v/gen/c/cgen.v

@@ -197,7 +197,7 @@ mut:
 	sumtype_casting_fns       []SumtypeCastingFn
 	anon_fn_definitions       []string        // anon generated functions definition list
 	anon_fns                  shared []string // remove duplicate anon generated functions
-	sumtype_definitions       map[int]bool    // `_TypeA_to_sumtype_TypeB()` fns that have been generated
+	sumtype_definitions       map[u32]bool    // `_TypeA_to_sumtype_TypeB()` fns that have been generated
 	trace_fn_definitions      []string
 	json_types                []ast.Type           // to avoid json gen duplicates
 	pcs                       []ProfileCounterMeta // -prof profile counter fn_names => fn counter name
@@ -532,7 +532,7 @@ pub fn gen(files []&ast.File, mut table ast.Table, pref_ &pref.Preferences) GenO
 				// Temporary hack to make toml work with -usecache TODO remove
 				continue
 			}
-			g.definitions.writeln('int _v_type_idx_${sym.cname}(); // 1build module ${g.pref.path}')
+			g.definitions.writeln('u32 _v_type_idx_${sym.cname}(); // 1build module ${g.pref.path}')
 		}
 	} else if g.pref.use_cache {
 		is_toml := g.pref.path.contains('/toml')
@@ -543,7 +543,7 @@ pub fn gen(files []&ast.File, mut table ast.Table, pref_ &pref.Preferences) GenO
 			if is_toml && sym.cname.contains('map[string]') {
 				continue
 			}
-			g.definitions.writeln('int _v_type_idx_${sym.cname}() { return ${idx}; }; //lol ${g.pref.path}')
+			g.definitions.writeln('u32 _v_type_idx_${sym.cname}() { return ${idx}; }; //lol ${g.pref.path}')
 		}
 	}
 
@@ -1138,8 +1138,8 @@ pub fn (mut g Gen) write_typeof_functions() {
 			if sum_info.is_generic {
 				continue
 			}
-			g.writeln('${static_prefix}char * v_typeof_sumtype_${sym.cname}(int sidx) {')
-			g.definitions.writeln('${static_prefix}char * v_typeof_sumtype_${sym.cname}(int);')
+			g.writeln('${static_prefix}char * v_typeof_sumtype_${sym.cname}(u32 sidx) {')
+			g.definitions.writeln('${static_prefix}char * v_typeof_sumtype_${sym.cname}(u32);')
 			if g.pref.build_mode == .build_module {
 				g.writeln('\t\tif( sidx == _v_type_idx_${sym.cname}() ) return "${util.strip_main_name(sym.name)}";')
 				for v in sum_info.variants {
@@ -1152,39 +1152,39 @@ pub fn (mut g Gen) write_typeof_functions() {
 				tidx := g.table.find_type_idx(sym.name)
 				g.writeln('\tswitch(sidx) {')
 				g.writeln('\t\tcase ${tidx}: return "${util.strip_main_name(sym.name)}";')
-				mut idxs := []int{}
+				mut idxs := []ast.Type{}
 				for v in sum_info.variants {
 					if v in idxs {
 						continue
 					}
 					subtype := g.table.sym(v)
-					g.writeln('\t\tcase ${int(v)}: return "${util.strip_main_name(subtype.name)}";')
+					g.writeln('\t\tcase ${u32(v)}: return "${util.strip_main_name(subtype.name)}";')
 					idxs << v
 				}
 				g.writeln('\t\tdefault: return "unknown ${util.strip_main_name(sym.name)}";')
 				g.writeln('\t}')
 			}
 			g.writeln2('}', '')
-			g.writeln('${static_prefix}int v_typeof_sumtype_idx_${sym.cname}(int sidx) {')
+			g.writeln('${static_prefix}u32 v_typeof_sumtype_idx_${sym.cname}(u32 sidx) {')
 			if g.pref.build_mode == .build_module {
-				g.writeln('\t\tif( sidx == _v_type_idx_${sym.cname}() ) return ${int(ityp)};')
+				g.writeln('\t\tif( sidx == _v_type_idx_${sym.cname}() ) return ${u32(ityp)};')
 				for v in sum_info.variants {
 					subtype := g.table.sym(v)
-					g.writeln('\tif( sidx == _v_type_idx_${subtype.cname}() ) return ${int(v)};')
+					g.writeln('\tif( sidx == _v_type_idx_${subtype.cname}() ) return ${u32(v)};')
 				}
-				g.writeln('\treturn ${int(ityp)};')
+				g.writeln('\treturn ${u32(ityp)};')
 			} else {
 				tidx := g.table.find_type_idx(sym.name)
-				g.writeln2('\tswitch(sidx) {', '\t\tcase ${tidx}: return ${int(ityp)};')
-				mut idxs := []int{}
+				g.writeln2('\tswitch(sidx) {', '\t\tcase ${tidx}: return ${u32(ityp)};')
+				mut idxs := []ast.Type{}
 				for v in sum_info.variants {
 					if v in idxs {
 						continue
 					}
-					g.writeln('\t\tcase ${int(v)}: return ${int(v)};')
+					g.writeln('\t\tcase ${u32(v)}: return ${u32(v)};')
 					idxs << v
 				}
-				g.writeln2('\t\tdefault: return ${int(ityp)};', '\t}')
+				g.writeln2('\t\tdefault: return ${u32(ityp)};', '\t}')
 			}
 			g.writeln('}')
 		} else if sym.kind == .interface {
@@ -1202,11 +1202,11 @@ pub fn (mut g Gen) write_typeof_functions() {
 				continue
 			}
 			already_generated_ifaces[sym.cname] = true
-			g.definitions.writeln('${g.static_non_parallel}char * v_typeof_interface_${sym.cname}(int sidx);')
+			g.definitions.writeln('${g.static_non_parallel}char * v_typeof_interface_${sym.cname}(u32 sidx);')
 			if g.pref.parallel_cc {
-				g.extern_out.writeln('extern char * v_typeof_interface_${sym.cname}(int sidx);')
+				g.extern_out.writeln('extern char * v_typeof_interface_${sym.cname}(u32 sidx);')
 			}
-			g.writeln('${g.static_non_parallel}char * v_typeof_interface_${sym.cname}(int sidx) {')
+			g.writeln('${g.static_non_parallel}char * v_typeof_interface_${sym.cname}(u32 sidx) {')
 			for t in inter_info.types {
 				sub_sym := g.table.sym(ast.mktyp(t))
 				if sub_sym.info is ast.Struct && sub_sym.info.is_unresolved_generic() {
@@ -1219,10 +1219,10 @@ pub fn (mut g Gen) write_typeof_functions() {
 				g.writeln('\tif (sidx == _${sym.cname}_${sub_sym.cname}_index) return "${util.strip_main_name(sub_sym.name)}";')
 			}
 			g.writeln2('\treturn "unknown ${util.strip_main_name(sym.name)}";', '}')
-			g.definitions.writeln('int v_typeof_interface_idx_${sym.cname}(int sidx);')
-			g.writeln2('', 'int v_typeof_interface_idx_${sym.cname}(int sidx) {')
+			g.definitions.writeln('u32 v_typeof_interface_idx_${sym.cname}(u32 sidx);')
+			g.writeln2('', 'u32 v_typeof_interface_idx_${sym.cname}(u32 sidx) {')
 			if g.pref.parallel_cc {
-				g.extern_out.writeln('extern int v_typeof_interface_idx_${sym.cname}(int sidx);')
+				g.extern_out.writeln('extern u32 v_typeof_interface_idx_${sym.cname}(u32 sidx);')
 			}
 			for t in inter_info.types {
 				sub_sym := g.table.sym(ast.mktyp(t))
@@ -1233,9 +1233,9 @@ pub fn (mut g Gen) write_typeof_functions() {
 					&& sub_sym.idx !in g.table.used_features.used_syms {
 					continue
 				}
-				g.writeln('\tif (sidx == _${sym.cname}_${sub_sym.cname}_index) return ${int(t.set_nr_muls(0))};')
+				g.writeln('\tif (sidx == _${sym.cname}_${sub_sym.cname}_index) return ${u32(t.set_nr_muls(0))};')
 			}
-			g.writeln2('\treturn ${int(ityp)};', '}')
+			g.writeln2('\treturn ${u32(ityp)};', '}')
 		}
 	}
 	g.writeln2('// << typeof() support for sum types', '')
@@ -1267,14 +1267,6 @@ fn (mut g Gen) base_type(_t ast.Type) string {
 			return 'u64'
 		}
 	}
-	/*
-	// On 64 bit systems int is an i64
-	$if amd64 || arm64 {
-		if g.pref.use_64_int && t == ast.int_type {
-			return 'i64'
-		}
-	}
-	*/
 	share := t.share()
 	mut styp := if share == .atomic_t { t.atomic_typename() } else { g.cc_type(t, true) }
 	if t.has_flag(.shared_f) {
@@ -1504,7 +1496,7 @@ fn (mut g Gen) write_shareds() {
 		g.shared_types.writeln('\t${mtx_typ} mtx;')
 		g.shared_types.writeln('\t${base} val;')
 		g.shared_types.writeln('};')
-		g.shared_functions.writeln('static inline voidptr __dup${sh_typ}(voidptr src, int sz) {')
+		g.shared_functions.writeln('static inline voidptr __dup${sh_typ}(voidptr src, ${ast.int_type_name} sz) {')
 		g.shared_functions.writeln('\t${sh_typ}* dest = builtin__memdup(src, sz);')
 		g.shared_functions.writeln('\tsync__RwMutex_init(&dest->mtx);')
 		g.shared_functions.writeln('\treturn dest;')
@@ -1553,7 +1545,7 @@ fn (mut g Gen) register_thread_array_wait_call(eltyp string) string {
 			g.waiter_fn_definitions.writeln('void ${fn_name}(${thread_arr_typ} a);')
 			g.gowrappers.writeln('
 void ${fn_name}(${thread_arr_typ} a) {
-	for (int i = 0; i < a.len; ++i) {
+	for (${ast.int_type_name} i = 0; i < a.len; ++i) {
 		${thread_typ} t = ((${thread_typ}*)a.data)[i];
 		if (t == 0) continue;
 		__v_thread_wait(t);
@@ -1564,7 +1556,7 @@ void ${fn_name}(${thread_arr_typ} a) {
 			g.gowrappers.writeln('
 ${ret_typ} ${fn_name}(${thread_arr_typ} a) {
 	${ret_typ} res = builtin____new_array_with_default(a.len, a.len, sizeof(${eltyp}), 0);
-	for (int i = 0; i < a.len; ++i) {
+	for (${ast.int_type_name} i = 0; i < a.len; ++i) {
 		${thread_typ} t = ((${thread_typ}*)a.data)[i];')
 			if g.pref.os == .windows {
 				g.gowrappers.writeln('\t\tif (t.handle == 0) continue;')
@@ -1601,7 +1593,7 @@ fn (mut g Gen) register_thread_fixed_array_wait_call(node ast.CallExpr, eltyp st
 			g.waiter_fn_definitions.writeln('void ${fn_name}(${thread_arr_typ} a);')
 			g.gowrappers.writeln('
 void ${fn_name}(${thread_arr_typ} a) {
-	for (int i = 0; i < ${len}; ++i) {
+	for (${ast.int_type_name} i = 0; i < ${len}; ++i) {
 		${thread_typ} t = ((${thread_typ}*)a)[i];
 		if (t == 0) continue;
 		__v_thread_wait(t);
@@ -1612,7 +1604,7 @@ void ${fn_name}(${thread_arr_typ} a) {
 			g.gowrappers.writeln('
 ${ret_typ} ${fn_name}(${thread_arr_typ} a) {
 	${ret_typ} res = builtin____new_array_with_default(${len}, ${len}, sizeof(${eltyp}), 0);
-	for (int i = 0; i < ${len}; ++i) {
+	for (${ast.int_type_name} i = 0; i < ${len}; ++i) {
 		${thread_typ} t = ((${thread_typ}*)a)[i];')
 			if g.pref.os == .windows {
 				g.gowrappers.writeln('\t\tif (t.handle == 0) continue;')
@@ -1722,7 +1714,7 @@ fn (g &Gen) type_sidx(t ast.Type) string {
 		sym := g.table.sym(t)
 		return '_v_type_idx_${sym.cname}()'
 	}
-	return int(t).str()
+	return u32(t).str()
 }
 
 pub fn (mut g Gen) write_typedef_types() {
@@ -1926,7 +1918,7 @@ pub fn (mut g Gen) write_interface_typesymbol_declaration(sym ast.TypeSymbol) {
 		g.type_definitions.writeln('\t\t${vcname}* _${vcname};')
 	}
 	g.type_definitions.writeln('\t};')
-	g.type_definitions.writeln('\tint _typ;')
+	g.type_definitions.writeln('\tu32 _typ;')
 	for field in info.fields {
 		styp := g.styp(field.typ)
 		cname := c_name(field.name)
@@ -2152,7 +2144,7 @@ fn (mut g Gen) stmts_with_tmp_var(stmts []ast.Stmt, tmp_var string) bool {
 						mut styp := g.base_type(stmt.typ)
 						$if tinyc && x32 && windows {
 							if stmt.typ == ast.int_literal_type {
-								styp = 'int'
+								styp = ast.int_type_name
 							} else if stmt.typ == ast.float_literal_type {
 								styp = 'f64'
 							}
@@ -2210,7 +2202,7 @@ fn (mut g Gen) stmts_with_tmp_var(stmts []ast.Stmt, tmp_var string) bool {
 						mut styp := g.base_type(stmt.typ)
 						$if tinyc && x32 && windows {
 							if stmt.typ == ast.int_literal_type {
-								styp = 'int'
+								styp = ast.int_type_name
 							} else if stmt.typ == ast.float_literal_type {
 								styp = 'f64'
 							}
@@ -2767,7 +2759,7 @@ struct SumtypeCastingFn {
 
 fn (mut g Gen) get_sumtype_casting_fn(got_ ast.Type, exp_ ast.Type) string {
 	mut got, exp := got_.idx_type(), exp_.idx_type()
-	i := int(got) | int(u32(exp) << 18) | int(u32(exp_.has_flag(.option)) << 17) | int(u32(got_.has_flag(.option)) << 16)
+	i := u32(got) | u32(u32(exp) << 18) | u32(u32(exp_.has_flag(.option)) << 17) | u32(u32(got_.has_flag(.option)) << 16)
 	exp_sym := g.table.sym(exp)
 	mut got_sym := g.table.sym(got)
 	cname := if exp == ast.int_type_idx {
@@ -2826,7 +2818,7 @@ fn (mut g Gen) write_sumtype_casting_fn(fun SumtypeCastingFn) {
 				if g.table.fn_type_source_signature(variant_sym.info.func) == g.table.fn_type_source_signature(got_sym.info.func) {
 					variant_name = g.get_sumtype_variant_name(variant, variant_sym)
 					got_cname = g.get_sumtype_variant_type_name(variant, variant_sym)
-					type_idx = int(variant).str()
+					type_idx = u32(variant).str()
 					break
 				}
 			}
@@ -3571,11 +3563,31 @@ fn (mut g Gen) map_fn_ptrs(key_sym ast.TypeSymbol) (string, string, string, stri
 			if g.pref.ccompiler_type == .tinyc
 				&& einfo.typ in [ast.u8_type, ast.u16_type, ast.i8_type, ast.i16_type] {
 				// workaround for tcc, since we can not generate a packed Enum with size < 4 bytes
-				return g.map_fn_ptrs(g.table.sym(ast.int_type))
+				return g.map_fn_ptrs(g.table.sym(ast.i32_type))
+			}
+			$if new_int ? && (arm64 || amd64 || rv64 || s390x || ppc64le || loongarch64) {
+				// enum type alway use 32bit `int`
+				if einfo.typ == ast.int_type {
+					return g.map_fn_ptrs(g.table.sym(ast.i32_type))
+				} else {
+					return g.map_fn_ptrs(g.table.sym(einfo.typ))
+				}
+			} $else {
+				return g.map_fn_ptrs(g.table.sym(einfo.typ))
 			}
-			return g.map_fn_ptrs(g.table.sym(einfo.typ))
 		}
-		.int, .i32, .u32, .rune, .f32 {
+		.int {
+			$if new_int ? && (arm64 || amd64 || rv64 || s390x || ppc64le || loongarch64) {
+				hash_fn = '&builtin__map_hash_int_8'
+				key_eq_fn = '&builtin__map_eq_int_8'
+				clone_fn = '&builtin__map_clone_int_8'
+			} $else {
+				hash_fn = '&builtin__map_hash_int_4'
+				key_eq_fn = '&builtin__map_eq_int_4'
+				clone_fn = '&builtin__map_clone_int_4'
+			}
+		}
+		.i32, .u32, .rune, .f32 {
 			hash_fn = '&builtin__map_hash_int_4'
 			key_eq_fn = '&builtin__map_eq_int_4'
 			clone_fn = '&builtin__map_clone_int_4'
@@ -4149,11 +4161,11 @@ fn (mut g Gen) selector_expr(node ast.SelectorExpr) {
 				return
 			}
 			.typ {
-				g.write(int(g.unwrap_generic(node.name_type)).str())
+				g.write(u32(g.unwrap_generic(node.name_type)).str())
 				return
 			}
 			.unaliased_typ {
-				g.write(int(g.table.unaliased_type(g.unwrap_generic(node.name_type))).str())
+				g.write(u32(g.table.unaliased_type(g.unwrap_generic(node.name_type))).str())
 				return
 			}
 			.indirections {
@@ -4592,7 +4604,7 @@ fn (mut g Gen) gen_closure_fn(expr_styp string, m ast.Fn, name string) {
 				if resolved_sym.is_builtin() {
 					full_method_name = 'builtin__${full_method_name}'
 				}
-			} else if expr_styp in ['int_literal', 'float_literal'] {
+			} else if expr_styp in ['int_literal', 'float_literal', 'vint_t'] {
 				full_method_name = 'builtin__${full_method_name}'
 			}
 		}
@@ -4963,7 +4975,8 @@ fn (mut g Gen) lock_expr(node ast.LockExpr) {
 		} else {
 			g.writeln('__sort_ptr(_arr_${mtxs}, _isrlck_${mtxs}, ${node.lockeds.len});')
 		}
-		g.writeln2('for (int ${mtxs}=0; ${mtxs}<${node.lockeds.len}; ${mtxs}++) {', '\tif (${mtxs} && _arr_${mtxs}[${mtxs}] == _arr_${mtxs}[${mtxs}-1]) continue;')
+		g.writeln2('for (${ast.int_type_name} ${mtxs}=0; ${mtxs}<${node.lockeds.len}; ${mtxs}++) {',
+			'\tif (${mtxs} && _arr_${mtxs}[${mtxs}] == _arr_${mtxs}[${mtxs}-1]) continue;')
 		g.writeln2('\tif (_isrlck_${mtxs}[${mtxs}])', '\t\tsync__RwMutex_rlock((sync__RwMutex*)_arr_${mtxs}[${mtxs}]);')
 		g.writeln2('\telse', '\t\tsync__RwMutex_lock((sync__RwMutex*)_arr_${mtxs}[${mtxs}]);')
 		g.writeln('}')
@@ -4993,7 +5006,7 @@ fn (mut g Gen) unlock_locks() {
 		g.expr(g.cur_lock.lockeds[0])
 		g.write('->mtx);')
 	} else {
-		g.writeln('for (int ${g.mtxs}=${g.cur_lock.lockeds.len - 1}; ${g.mtxs}>=0; ${g.mtxs}--) {')
+		g.writeln('for (${ast.int_type_name} ${g.mtxs}=${g.cur_lock.lockeds.len - 1}; ${g.mtxs}>=0; ${g.mtxs}--) {')
 		g.writeln('\tif (${g.mtxs} && _arr_${g.mtxs}[${g.mtxs}] == _arr_${g.mtxs}[${g.mtxs}-1]) continue;')
 		g.writeln('\tif (_isrlck_${g.mtxs}[${g.mtxs}])')
 		g.writeln('\t\tsync__RwMutex_runlock((sync__RwMutex*)_arr_${g.mtxs}[${g.mtxs}]);')
@@ -5673,7 +5686,7 @@ fn (mut g Gen) cast_expr(node ast.CastExpr) {
 				expr_styp := g.styp(expr_typ)
 				g.write('{._${g.table.sym(expr_typ).cname}=builtin__memdup(ADDR(${expr_styp}, ')
 				g.expr(node.expr)
-				g.write('), sizeof(${expr_styp})),._typ=${int(expr_typ)}})')
+				g.write('), sizeof(${expr_styp})),._typ=${u32(expr_typ)}})')
 			} else {
 				g.write('(')
 				if node.expr is ast.Ident {
@@ -6925,7 +6938,7 @@ fn (mut g Gen) write_types(symbols []&ast.TypeSymbol) {
 				}
 				struct_names[name] = true
 				g.typedefs.writeln('typedef struct ${name} ${name};')
-				mut idxs := []int{}
+				mut idxs := []ast.Type{}
 				if !g.pref.is_prod {
 					// Do not print union sum type coment in prod mode
 					g.type_definitions.writeln('')
@@ -6962,7 +6975,7 @@ fn (mut g Gen) write_types(symbols []&ast.TypeSymbol) {
 					g.type_definitions.writeln('\t\t${var_type} _${variant_name};')
 				}
 				g.type_definitions.writeln('\t};')
-				g.type_definitions.writeln('\tint _typ;')
+				g.type_definitions.writeln('\tu32 _typ;')
 				if sym.info.fields.len > 0 {
 					g.writeln('\t// pointers to common sumtype fields')
 					for field in sym.info.fields {
@@ -7465,9 +7478,9 @@ fn (mut g Gen) type_default_sumtype(typ_ ast.Type, sym ast.TypeSymbol) string {
 		g.type_default_no_sumtype(first_typ)
 	}
 	if default_str[0] == `{` {
-		return '(${g.styp(typ_)}){._${first_field}=HEAP(${first_styp}, ((${first_styp})${default_str})),._typ=${int(first_typ)}}'
+		return '(${g.styp(typ_)}){._${first_field}=HEAP(${first_styp}, ((${first_styp})${default_str})),._typ=${u32(first_typ)}}'
 	} else {
-		return '(${g.styp(typ_)}){._${first_field}=HEAP(${first_styp}, (${default_str})),._typ=${int(first_typ)}}'
+		return '(${g.styp(typ_)}){._${first_field}=HEAP(${first_styp}, (${default_str})),._typ=${u32(first_typ)}}'
 	}
 }
 
@@ -8304,9 +8317,9 @@ return ${cast_shared_struct_str};
 			}
 			iin_idx := already_generated_mwrappers[interface_index_name] - iinidx_minimum_base
 			if g.pref.build_mode != .build_module {
-				sb.writeln('${g.static_modifier}const int ${interface_index_name} = ${iin_idx};')
+				sb.writeln('${g.static_modifier}const u32 ${interface_index_name} = ${iin_idx};')
 			} else {
-				sb.writeln('extern const int ${interface_index_name};')
+				sb.writeln('extern const u32 ${interface_index_name};')
 			}
 		}
 		for vtyp, variants in inter_info.conversions {
@@ -8486,7 +8499,7 @@ pub fn (mut g Gen) contains_ptr(el_typ ast.Type) bool {
 		return true
 	}
 	match sym.kind {
-		.i8, .i16, .int, .i64, .u8, .u16, .u32, .u64, .f32, .f64, .char, .rune, .bool, .enum {
+		.i8, .i16, .i32, .int, .i64, .u8, .u16, .u32, .u64, .f32, .f64, .char, .rune, .bool, .enum {
 			g.contains_ptr_cache[typ] = false
 			return false
 		}
@@ -8542,6 +8555,16 @@ fn (mut g Gen) check_noscan(elem_typ ast.Type) string {
 	return ''
 }
 
+// vint2int rename `_vint_t` to `int`
+fn vint2int(name string) string {
+	$if new_int ? && (arm64 || amd64 || rv64 || s390x || ppc64le || loongarch64) {
+		if name == ast.int_type_name {
+			return 'int'
+		}
+	}
+	return name
+}
+
 const hi_32_mask = u64(0xFFFFFFFF00000000)
 const lo_32_mask = u64(0x00000000FFFFFFFF)
 const sign_bit_32 = u32(0x80000000)

vlib/v/gen/c/cheaders.v

@@ -1,5 +1,7 @@
 module c
 
+import v.ast
+
 // Note: @@@ here serve as placeholders.
 // They will be replaced with correct strings
 // for each constant, during C code generation.
@@ -17,7 +19,7 @@ struct __shared_map {
 	sync__RwMutex mtx;
 	map val;
 };
-static inline voidptr __dup_shared_map(voidptr src, int sz) {
+static inline voidptr __dup_shared_map(voidptr src, ${ast.int_type_name} sz) {
 	__shared_map* dest = builtin__memdup(src, sz);
 	sync__RwMutex_init(&dest->mtx);
 	return dest;
@@ -27,16 +29,16 @@ struct __shared_array {
 	sync__RwMutex mtx;
 	array val;
 };
-static inline voidptr __dup_shared_array(voidptr src, int sz) {
+static inline voidptr __dup_shared_array(voidptr src, ${ast.int_type_name} sz) {
 	__shared_array* dest = builtin__memdup(src, sz);
 	sync__RwMutex_init(&dest->mtx);
 	return dest;
 }
-static inline void __sort_ptr(uintptr_t a[], bool b[], int l) {
-	for (int i=1; i<l; i++) {
+static inline void __sort_ptr(uintptr_t a[], bool b[], ${ast.int_type_name} l) {
+	for (${ast.int_type_name} i=1; i<l; i++) {
 		uintptr_t ins = a[i];
 		bool insb = b[i];
-		int j = i;
+		${ast.int_type_name} j = i;
 		while(j>0 && a[j-1] > ins) {
 			a[j] = a[j-1];
 			b[j] = b[j-1];

vlib/v/gen/c/consts_and_globals.v

@@ -292,7 +292,7 @@ fn (mut g Gen) const_decl_simple_define(mod string, name string, val string) {
 	if g.pref.translated {
 		g.global_const_defs[util.no_dots(name)] = GlobalConstDef{
 			mod:   mod
-			def:   'const int ${x} = ${val};'
+			def:   'const ${ast.int_type_name} ${x} = ${val};'
 			order: -1
 		}
 	} else {

vlib/v/gen/c/coverage.v

@@ -86,10 +86,10 @@ fn (mut g Gen) write_coverage_stats() {
 		fmeta.writeln('}') or { continue }
 		fmeta.close()
 	}
-	g.cov_declarations.writeln('\tlong int secs = 0;')
-	g.cov_declarations.writeln('\tlong int nsecs = 0;')
+	g.cov_declarations.writeln('\tint secs = 0;')
+	g.cov_declarations.writeln('\tint nsecs = 0;')
 	g.cov_declarations.writeln('\t#if defined(_WIN32)')
-	g.cov_declarations.writeln('\tlong int ticks_passed = GetTickCount();')
+	g.cov_declarations.writeln('\tint ticks_passed = GetTickCount();')
 	g.cov_declarations.writeln('\nsecs = ticks_passed / 1000;')
 	g.cov_declarations.writeln('\nnsecs = (ticks_passed % 1000) * 1000000;')
 	g.cov_declarations.writeln('\t#endif')
@@ -109,7 +109,7 @@ fn (mut g Gen) write_coverage_stats() {
 	for k, cov in g.coverage_files {
 		nr_points := cov.points.len
 		g.cov_declarations.writeln('\t{')
-		g.cov_declarations.writeln('\t\tfor (int i = 0; i < ${nr_points}; ++i) {')
+		g.cov_declarations.writeln('\t\tfor (${ast.int_type_name} i = 0; i < ${nr_points}; ++i) {')
 		g.cov_declarations.writeln('\t\t\tif (_v_cov[_v_cov_file_offset_${k}+i]) {')
 		g.cov_declarations.writeln("\t\t\t\tfprintf(fp, \"%s,%d,%ld\\n\", \"${cov.fhash}\", i, _v_cov[_v_cov_file_offset_${k}+i]);")
 		g.cov_declarations.writeln('\t\t\t}')

vlib/v/gen/c/dumpexpr.v

@@ -177,14 +177,15 @@ fn (mut g Gen) dump_expr_definitions() {
 		}
 		dump_already_generated_fns[dump_fn_name] = true
 
-		dump_fn_defs.writeln('${str_dumparg_ret_type} ${dump_fn_name}(string fpath, int line, string sexpr, ${str_dumparg_type} dump_arg);')
-		if g.writeln_fn_header('${str_dumparg_ret_type} ${dump_fn_name}(string fpath, int line, string sexpr, ${str_dumparg_type} dump_arg)', mut
+		dump_fn_defs.writeln('${str_dumparg_ret_type} ${dump_fn_name}(string fpath, ${ast.int_type_name} line, string sexpr, ${str_dumparg_type} dump_arg);')
+		if g.writeln_fn_header('${str_dumparg_ret_type} ${dump_fn_name}(string fpath, ${ast.int_type_name} line, string sexpr, ${str_dumparg_type} dump_arg)', mut
 			dump_fns)
 		{
 			continue
 		}
 		mut surrounder := util.new_surrounder(3)
-		surrounder.add('\tstring sline = builtin__int_str(line);', '\tbuiltin__string_free(&sline);')
+		int_str := g.get_str_fn(ast.int_type)
+		surrounder.add('\tstring sline = ${int_str}(line);', '\tbuiltin__string_free(&sline);')
 		if dump_sym.kind == .function && !is_option {
 			surrounder.add('\tstring value = ${to_string_fn_name}();', '\tbuiltin__string_free(&value);')
 		} else if dump_sym.kind == .none {

vlib/v/gen/c/fn.v

@@ -1686,7 +1686,7 @@ fn (mut g Gen) method_call(node ast.CallExpr) {
 		if resolved_sym.is_builtin() && !receiver_type_name.starts_with('_') {
 			name = 'builtin__${name}'
 		}
-	} else if receiver_type_name in ['int_literal', 'float_literal'] {
+	} else if receiver_type_name in ['int_literal', 'float_literal', 'vint_t'] {
 		name = 'builtin__${name}'
 	}
 	if left_sym.kind == .chan && node.name in ['close', 'try_pop', 'try_push'] {

vlib/v/gen/c/for.v

@@ -246,7 +246,7 @@ fn (mut g Gen) for_in_stmt(node_ ast.ForInStmt) {
 		} else {
 			'${cond_var}${op_field}len'
 		}
-		g.writeln('for (int ${i} = 0; ${i} < ${cond_expr}; ++${i}) {')
+		g.writeln('for (${ast.int_type_name} ${i} = 0; ${i} < ${cond_expr}; ++${i}) {')
 		if node.val_var != '_' {
 			if mut val_sym.info is ast.FnType {
 				g.write('\t')
@@ -308,7 +308,7 @@ fn (mut g Gen) for_in_stmt(node_ ast.ForInStmt) {
 		idx := if node.key_var in ['', '_'] { g.new_tmp_var() } else { node.key_var }
 		cond_sym := g.table.final_sym(node.cond_type)
 		info := cond_sym.info as ast.ArrayFixed
-		g.writeln('for (int ${idx} = 0; ${idx} != ${info.size}; ++${idx}) {')
+		g.writeln('for (${ast.int_type_name} ${idx} = 0; ${idx} != ${info.size}; ++${idx}) {')
 		if node.val_var != '_' {
 			val_sym := g.table.sym(node.val_type)
 			is_fixed_array := val_sym.kind == .array_fixed && !node.val_is_mut
@@ -357,12 +357,12 @@ fn (mut g Gen) for_in_stmt(node_ ast.ForInStmt) {
 		idx := g.new_tmp_var()
 		map_len := g.new_tmp_var()
 		g.empty_line = true
-		g.writeln('int ${map_len} = ${cond_var}${dot_or_ptr}key_values.len;')
-		g.writeln('for (int ${idx} = 0; ${idx} < ${map_len}; ++${idx} ) {')
+		g.writeln('${ast.int_type_name} ${map_len} = ${cond_var}${dot_or_ptr}key_values.len;')
+		g.writeln('for (${ast.int_type_name} ${idx} = 0; ${idx} < ${map_len}; ++${idx} ) {')
 		// TODO: don't have this check when the map has no deleted elements
 		g.indent++
 		diff := g.new_tmp_var()
-		g.writeln('int ${diff} = ${cond_var}${dot_or_ptr}key_values.len - ${map_len};')
+		g.writeln('${ast.int_type_name} ${diff} = ${cond_var}${dot_or_ptr}key_values.len - ${map_len};')
 		g.writeln('${map_len} = ${cond_var}${dot_or_ptr}key_values.len;')
 		// TODO: optimize this
 		g.writeln('if (${diff} < 0) {')
@@ -413,7 +413,7 @@ fn (mut g Gen) for_in_stmt(node_ ast.ForInStmt) {
 		}
 		field_accessor := if node.cond_type.is_ptr() { '->' } else { '.' }
 		i := if node.key_var in ['', '_'] { g.new_tmp_var() } else { node.key_var }
-		g.write('for (int ${i} = 0; ${i} < ')
+		g.write('for (${ast.int_type_name} ${i} = 0; ${i} < ')
 		g.expr(cond)
 		g.writeln('${field_accessor}len; ++${i}) {')
 		if node.val_var != '_' {
@@ -522,7 +522,7 @@ fn (mut g Gen) for_in_stmt(node_ ast.ForInStmt) {
 
 	if node.kind == .map {
 		// diff := g.new_tmp_var()
-		// g.writeln('int $diff = $cond_var${arw_or_pt}key_values.len - $map_len;')
+		// g.writeln('${ast.int_type_name} $diff = $cond_var${arw_or_pt}key_values.len - $map_len;')
 		// g.writeln('if ($diff < 0) {')
 		// g.writeln('\t$idx = -1;')
 		// g.writeln('\t$map_len = $cond_var${arw_or_pt}key_values.len;')

vlib/v/gen/c/index.v

@@ -152,7 +152,7 @@ fn (mut g Gen) index_range_expr(node ast.IndexExpr, range ast.RangeExpr) {
 	} else if sym.info is ast.ArrayFixed {
 		g.write('${sym.info.size}')
 	} else {
-		g.write('2147483647') // max_int
+		g.write('${max_int}')
 	}
 	g.write(')')
 

vlib/v/gen/c/json.v

@@ -87,12 +87,12 @@ ${dec_fn_dec} {
 	if (!root) {
 		const char *error_ptr = cJSON_GetErrorPtr();
 		if (error_ptr != NULL) {
-			const int error_pos = (int)cJSON_GetErrorPos();
-			int maxcontext_chars = 30;
+			const ${ast.int_type_name} error_pos = (${ast.int_type_name})cJSON_GetErrorPos();
+			${ast.int_type_name} maxcontext_chars = 30;
 			byte *buf = builtin__vcalloc_noscan(maxcontext_chars + 10);
 			if (error_pos > 0) {
-				int backlines = 1;
-				int backchars = error_pos < maxcontext_chars-7 ? (int)error_pos : maxcontext_chars-7 ;
+				${ast.int_type_name} backlines = 1;
+				${ast.int_type_name} backchars = error_pos < maxcontext_chars-7 ? (${ast.int_type_name})error_pos : maxcontext_chars-7 ;
 				char *prevline_ptr = (char*)error_ptr;
 				while(backchars--){
 					char prevc = *(prevline_ptr - 1);
@@ -107,7 +107,7 @@ ${dec_fn_dec} {
 						break; // stop at `{` too
 					}
 				}
-				int maxchars = builtin__vstrlen_char(prevline_ptr);
+				${ast.int_type_name} maxchars = builtin__vstrlen_char(prevline_ptr);
 				builtin__vmemcpy(buf, prevline_ptr, (maxchars < maxcontext_chars ? maxchars : maxcontext_chars));
 			}
 			string msg;
@@ -612,8 +612,8 @@ fn (mut g Gen) gen_sumtype_enc_dec(utyp ast.Type, sym ast.TypeSymbol, mut enc st
 					dec.writeln('\t\t}')
 				}
 
-				if var_t in ['i64', 'int', 'i8', 'u64', 'u32', 'u16', 'byte', 'u8', 'rune', 'f64',
-					'f32'] {
+				if var_t in ['i8', 'i16', 'i32', 'i64', ast.int_type_name, 'int', 'u8', 'u16',
+					'u32', 'u64', 'byte', 'rune', 'f64', 'f32'] {
 					if number_is_met {
 						var_num := var_t.replace('__', '.')
 						last_num := last_number_type.replace('__', '.')
@@ -703,7 +703,7 @@ fn (mut g Gen) gen_struct_enc_dec(utyp ast.Type, type_info ast.TypeInfo, styp st
 		if is_skip {
 			continue
 		}
-		field_type := g.styp(field.typ)
+		field_type := vint2int(g.styp(field.typ))
 		field_sym := g.table.sym(field.typ)
 		op := if utyp.is_ptr() { '->' } else { '.' }
 		embed_member := if embed_prefix.len > 0 { '.${embed_prefix}' } else { '' }
@@ -1031,6 +1031,7 @@ fn js_enc_name(typ string) string {
 	if typ == 'i32' {
 		suffix = typ.replace('i32', 'int')
 	}
+	suffix = vint2int(suffix)
 	name := 'json__encode_${suffix}'
 	return util.no_dots(name)
 }
@@ -1040,13 +1041,14 @@ fn js_dec_name(typ string) string {
 	if typ == 'i32' {
 		suffix = typ.replace('i32', 'int')
 	}
+	suffix = vint2int(suffix)
 	name := 'json__decode_${suffix}'
 	return util.no_dots(name)
 }
 
 fn is_js_prim(typ string) bool {
-	return typ in ['int', 'rune', 'string', 'bool', 'f32', 'f64', 'i8', 'i16', 'i32', 'i64', 'u8',
-		'u16', 'u32', 'u64', 'byte']
+	return typ in [ast.int_type_name, 'int', 'rune', 'string', 'bool', 'f32', 'f64', 'i8', 'i16',
+		'i32', 'i64', 'u8', 'u16', 'u32', 'u64', 'byte']
 }
 
 fn (mut g Gen) decode_array(utyp ast.Type, value_type ast.Type, fixed_array_size int, ret_styp string) string {
@@ -1062,7 +1064,7 @@ fn (mut g Gen) decode_array(utyp ast.Type, value_type ast.Type, fixed_array_size
 	is_array_fixed_val := g.table.final_sym(value_type).kind == .array_fixed
 	if utyp.has_flag(.option) {
 		if fixed_array_size > -1 {
-			fixed_array_idx += 'int fixed_array_idx = 0;'
+			fixed_array_idx += '${ast.int_type_name} fixed_array_idx = 0;'
 			array_element_assign += '((${styp}*)res.data)[fixed_array_idx] = val;'
 			fixed_array_idx_increment += 'fixed_array_idx++; res.state = 0;'
 		} else {
@@ -1072,11 +1074,11 @@ fn (mut g Gen) decode_array(utyp ast.Type, value_type ast.Type, fixed_array_size
 		}
 	} else {
 		if is_array_fixed_val {
-			fixed_array_idx += 'int fixed_array_idx = 0;'
+			fixed_array_idx += '${ast.int_type_name} fixed_array_idx = 0;'
 			array_element_assign += 'memcpy(res[fixed_array_idx], val, sizeof(${styp}));'
 			fixed_array_idx_increment += 'fixed_array_idx++;'
 		} else if fixed_array_size > -1 {
-			fixed_array_idx += 'int fixed_array_idx = 0;'
+			fixed_array_idx += '${ast.int_type_name} fixed_array_idx = 0;'
 			array_element_assign += 'res[fixed_array_idx] = val;'
 			fixed_array_idx_increment += 'fixed_array_idx++;'
 		} else {
@@ -1150,7 +1152,7 @@ fn (mut g Gen) encode_array(utyp ast.Type, value_type ast.Type, fixed_array_size
 
 	return '
 	o = cJSON_CreateArray();
-	for (int i = 0; i < ${size_str}; i++){
+	for (${ast.int_type_name} i = 0; i < ${size_str}; i++){
 		cJSON_AddItemToArray(o, ${fn_name}( (${data_str})[i] ));
 	}
 '
@@ -1225,7 +1227,7 @@ fn (mut g Gen) encode_map(utyp ast.Type, key_type ast.Type, value_type ast.Type)
 		return '
 		o = cJSON_CreateObject();
 		Array_${styp} ${keys_tmp} = builtin__map_keys((map*)val.data);
-		for (int i = 0; i < ${keys_tmp}.len; ++i) {
+		for (${ast.int_type_name} i = 0; i < ${keys_tmp}.len; ++i) {
 			${key}
 			cJSON_AddItemToObject(o, (char*) key.str, ${fn_name_v} ( *(${styp_v}*) builtin__map_get((map*)val.data, &key, &(${styp_v}[]) { ${zero} } ) ) );
 		}
@@ -1235,7 +1237,7 @@ fn (mut g Gen) encode_map(utyp ast.Type, key_type ast.Type, value_type ast.Type)
 		return '
 		o = cJSON_CreateObject();
 		Array_${styp} ${keys_tmp} = builtin__map_keys(&val);
-		for (int i = 0; i < ${keys_tmp}.len; ++i) {
+		for (${ast.int_type_name} i = 0; i < ${keys_tmp}.len; ++i) {
 			${key}
 			cJSON_AddItemToObject(o, (char*) key.str, ${fn_name_v} ( *(${styp_v}*) builtin__map_get(&val, &key, &(${styp_v}[]) { ${zero} } ) ) );
 		}

vlib/v/gen/c/orm.v

@@ -292,7 +292,7 @@ fn (mut g Gen) write_orm_update(node &ast.SqlStmtLine, table_name string, connec
 	g.writeln('.kinds = builtin____new_array_with_default_noscan(0, 0, sizeof(orm__OperationKind), 0),')
 	g.writeln('.is_and = builtin____new_array_with_default_noscan(0, 0, sizeof(bool), 0),')
 	g.writeln('.types = builtin____new_array_with_default_noscan(0, 0, sizeof(${ast.int_type_name}), 0),')
-	g.writeln('.parentheses = builtin____new_array_with_default_noscan(0, 0, sizeof(Array_int), 0),')
+	g.writeln('.parentheses = builtin____new_array_with_default_noscan(0, 0, sizeof(Array_${ast.int_type_name}), 0),')
 
 	if node.updated_columns.len > 0 {
 		g.writeln('.fields = builtin__new_array_from_c_array(${node.updated_columns.len}, ${node.updated_columns.len}, sizeof(string),')
@@ -481,6 +481,7 @@ fn (mut g Gen) write_orm_insert_with_last_ids(node ast.SqlStmtLine, connection_v
 			} else if sym.kind == .enum {
 				typ = g.table.sym(final_field_typ).cname
 			}
+			typ = vint2int(typ)
 			var := '${node.object_var}${member_access_type}${c_name(field.name)}'
 			if final_field_typ.has_flag(.option) {
 				g.writeln('${var}.state == 2? _const_orm__null_primitive : orm__${typ}_to_primitive(*(${ctyp}*)(${var}.data)),')
@@ -503,7 +504,7 @@ fn (mut g Gen) write_orm_insert_with_last_ids(node ast.SqlStmtLine, connection_v
 	if auto_fields.len > 0 {
 		g.writeln('.auto_fields = builtin__new_array_from_c_array(${auto_fields.len}, ${auto_fields.len}, sizeof(${ast.int_type_name}),')
 		g.indent++
-		g.write('_MOV((int[${auto_fields.len}]){')
+		g.write('_MOV((${ast.int_type_name}[${auto_fields.len}]){')
 		for i in auto_fields {
 			g.write(' ${i},')
 		}
@@ -533,6 +534,7 @@ fn (mut g Gen) write_orm_insert_with_last_ids(node ast.SqlStmtLine, connection_v
 			if typ == 'time__Time' {
 				typ = 'time'
 			}
+			typ = vint2int(typ)
 			g.writeln('orm__Primitive ${id_name} = orm__${typ}_to_primitive(${node.object_var}${member_access_type}${c_name(primary_field.name)});')
 		}
 		for i, mut arr in arrs {
@@ -540,9 +542,9 @@ fn (mut g Gen) write_orm_insert_with_last_ids(node ast.SqlStmtLine, connection_v
 			ctyp := g.styp(arr.table_expr.typ)
 			is_option := opt_fields.contains(i)
 			if is_option {
-				g.writeln('for (int ${idx} = 0; ${node.object_var}${member_access_type}${arr.object_var}.state != 2 && ${idx} < (*(Array_${ctyp}*)${node.object_var}${member_access_type}${arr.object_var}.data).len; ${idx}++) {')
+				g.writeln('for (${ast.int_type_name} ${idx} = 0; ${node.object_var}${member_access_type}${arr.object_var}.state != 2 && ${idx} < (*(Array_${ctyp}*)${node.object_var}${member_access_type}${arr.object_var}.data).len; ${idx}++) {')
 			} else {
-				g.writeln('for (int ${idx} = 0; ${idx} < ${node.object_var}${member_access_type}${arr.object_var}.len; ${idx}++) {')
+				g.writeln('for (${ast.int_type_name} ${idx} = 0; ${idx} < ${node.object_var}${member_access_type}${arr.object_var}.len; ${idx}++) {')
 			}
 			g.indent++
 			last_ids := g.new_tmp_var()
@@ -680,6 +682,7 @@ fn (mut g Gen) write_orm_primitive(t ast.Type, expr ast.Expr) {
 		} else if g.table.final_sym(t).kind == .array {
 			typ = g.table.sym(g.table.final_type(t)).cname.to_lower()
 		}
+		typ = vint2int(typ)
 		g.write('orm__${typ}_to_primitive(')
 		if expr is ast.CallExpr {
 			g.call_expr(expr)
@@ -741,10 +744,10 @@ fn (mut g Gen) write_orm_where(where_expr ast.Expr) {
 
 	g.write('.parentheses = ')
 	if parentheses.len > 0 {
-		g.write('builtin__new_array_from_c_array(${parentheses.len}, ${parentheses.len}, sizeof(Array_int), _MOV((Array_int[${parentheses.len}]){')
+		g.write('builtin__new_array_from_c_array(${parentheses.len}, ${parentheses.len}, sizeof(Array_${ast.int_type_name}), _MOV((Array_${ast.int_type_name}[${parentheses.len}]){')
 		for par in parentheses {
 			if par.len > 0 {
-				g.write('builtin__new_array_from_c_array(${par.len}, ${par.len}, sizeof(${ast.int_type_name}), _MOV((int[${par.len}]){')
+				g.write('builtin__new_array_from_c_array(${par.len}, ${par.len}, sizeof(${ast.int_type_name}), _MOV((${ast.int_type_name}[${par.len}]){')
 				for val in par {
 					g.write('${val},')
 				}
@@ -755,7 +758,7 @@ fn (mut g Gen) write_orm_where(where_expr ast.Expr) {
 		}
 		g.write('}))')
 	} else {
-		g.write('builtin____new_array_with_default_noscan(0, 0, sizeof(Array_int), 0)')
+		g.write('builtin____new_array_with_default_noscan(0, 0, sizeof(Array_${ast.int_type_name}), 0)')
 	}
 	g.writeln(',')
 
@@ -1006,7 +1009,7 @@ fn (mut g Gen) write_orm_select(node ast.SqlExpr, connection_var_name string, re
 	g.indent++
 
 	if types.len > 0 {
-		g.write('_MOV((int[${types.len}]){')
+		g.write('_MOV((${ast.int_type_name}[${types.len}]){')
 		for typ in types {
 			g.write(' ${typ},')
 		}
@@ -1032,7 +1035,7 @@ fn (mut g Gen) write_orm_select(node ast.SqlExpr, connection_var_name string, re
 	g.writeln('.types = builtin____new_array_with_default_noscan(0, 0, sizeof(${ast.int_type_name}), 0),')
 	g.writeln('.kinds = builtin____new_array_with_default_noscan(0, 0, sizeof(orm__OperationKind), 0),')
 	g.writeln('.is_and = builtin____new_array_with_default_noscan(0, 0, sizeof(bool), 0),')
-	g.writeln('.parentheses = builtin____new_array_with_default_noscan(0, 0, sizeof(Array_int), 0),')
+	g.writeln('.parentheses = builtin____new_array_with_default_noscan(0, 0, sizeof(Array_${ast.int_type_name}), 0),')
 	if exprs.len > 0 {
 		g.write('.data = builtin__new_array_from_c_array(${exprs.len}, ${exprs.len}, sizeof(orm__Primitive),')
 		g.write(' _MOV((orm__Primitive[${exprs.len}]){')
@@ -1054,7 +1057,7 @@ fn (mut g Gen) write_orm_select(node ast.SqlExpr, connection_var_name string, re
 		g.writeln('.types = builtin____new_array_with_default_noscan(0, 0, sizeof(${ast.int_type_name}), 0),')
 		g.writeln('.kinds = builtin____new_array_with_default_noscan(0, 0, sizeof(orm__OperationKind), 0),')
 		g.writeln('.is_and = builtin____new_array_with_default_noscan(0, 0, sizeof(bool), 0),')
-		g.writeln('.parentheses = builtin____new_array_with_default_noscan(0, 0, sizeof(Array_int), 0),')
+		g.writeln('.parentheses = builtin____new_array_with_default_noscan(0, 0, sizeof(Array_${ast.int_type_name}), 0),')
 		g.writeln('.data = builtin____new_array_with_default_noscan(0, 0, sizeof(orm__Primitive), 0)')
 		g.indent--
 		g.writeln('}')
@@ -1077,11 +1080,11 @@ fn (mut g Gen) write_orm_select(node ast.SqlExpr, connection_var_name string, re
 	g.writeln('Array_Array_orm__Primitive ${select_unwrapped_result_var_name} = (*(Array_Array_orm__Primitive*)${select_result_var_name}.data);')
 
 	if node.is_count {
-		g.writeln('*(${unwrapped_c_typ}*) ${result_var}.data = *((*(orm__Primitive*) builtin__array_get((*(Array_orm__Primitive*) builtin__array_get(${select_unwrapped_result_var_name}, 0)), 0))._int);')
+		g.writeln('*(${unwrapped_c_typ}*) ${result_var}.data = *((*(orm__Primitive*) builtin__array_get((*(Array_orm__Primitive*) builtin__array_get(${select_unwrapped_result_var_name}, 0)), 0))._${ast.int_type_name});')
 	} else {
 		tmp := g.new_tmp_var()
 		idx := g.new_tmp_var()
-		g.writeln('int ${idx} = 0;')
+		g.writeln('${ast.int_type_name} ${idx} = 0;')
 		mut typ_str := ''
 		if node.is_array {
 			info := g.table.sym(node.typ).array_info()
@@ -1337,8 +1340,8 @@ fn (g &Gen) get_orm_column_name_from_struct_field(field ast.StructField) string
 	mut name := field.name
 
 	if attr := field.attrs.find_first('sql') {
-		if attr.arg !in ['serial', 'i8', 'i16', 'int', 'i64', 'u8', 'u16', 'u32', 'u64', 'f32',
-			'f64', 'bool', 'string'] {
+		if attr.arg !in ['serial', 'i8', 'i16', 'i32', 'int', 'i64', 'u8', 'u16', 'u32', 'u64',
+			'f32', 'f64', 'bool', 'string'] {
 			name = attr.arg
 		}
 	}

vlib/v/gen/c/reflection.v

@@ -123,7 +123,7 @@ fn (g &Gen) gen_type_array(types []ast.Type) string {
 	if types.len == 0 {
 		return g.gen_empty_array(ast.int_type_name)
 	}
-	return 'builtin__new_array_from_c_array(${types.len},${types.len},sizeof(${ast.int_type_name}),_MOV((int[${types.len}]){${types.map(int(it).str()).join(',')}}))'
+	return 'builtin__new_array_from_c_array(${types.len},${types.len},sizeof(int),_MOV((int[${types.len}]){${types.map(int(it).str()).join(',')}}))'
 }
 
 // gen_string_array generates C code for []string

vlib/v/gen/c/str_intp.v

@@ -119,16 +119,46 @@ fn (mut g Gen) str_format(node ast.StringInterLiteral, i int, fmts []u8) (u64, s
 			fmt_type = .si_c
 		} else {
 			match typ {
-				ast.i8_type { fmt_type = .si_i8 }
-				ast.u8_type { fmt_type = .si_u8 }
-				ast.i16_type { fmt_type = .si_i16 }
-				ast.u16_type { fmt_type = .si_u16 }
-				ast.i64_type { fmt_type = .si_i64 }
-				ast.u64_type { fmt_type = .si_u64 }
-				ast.u32_type { fmt_type = .si_u32 }
-				ast.usize_type { fmt_type = .si_u64 }
-				ast.isize_type { fmt_type = .si_i64 }
-				else { fmt_type = .si_i32 }
+				ast.i8_type {
+					fmt_type = .si_i8
+				}
+				ast.u8_type {
+					fmt_type = .si_u8
+				}
+				ast.i16_type {
+					fmt_type = .si_i16
+				}
+				ast.u16_type {
+					fmt_type = .si_u16
+				}
+				ast.i64_type {
+					fmt_type = .si_i64
+				}
+				ast.u64_type {
+					fmt_type = .si_u64
+				}
+				ast.i32_type {
+					fmt_type = .si_i32
+				}
+				ast.u32_type {
+					fmt_type = .si_u32
+				}
+				ast.int_type {
+					$if new_int ? && (arm64 || amd64 || rv64 || s390x || ppc64le || loongarch64) {
+						fmt_type = .si_i64
+					} $else {
+						fmt_type = .si_i32
+					}
+				}
+				ast.usize_type {
+					fmt_type = .si_u64
+				}
+				ast.isize_type {
+					fmt_type = .si_i64
+				}
+				else {
+					fmt_type = .si_i32
+				}
 			}
 		}
 	} else {
@@ -206,8 +236,14 @@ fn (mut g Gen) str_val(node ast.StringInterLiteral, i int, fmts []u8) {
 				g.write('(byte)(')
 			} else if typ == ast.i16_type {
 				g.write('(u16)(')
-			} else if typ == ast.int_type {
+			} else if typ == ast.i32_type {
 				g.write('(u32)(')
+			} else if typ == ast.int_type {
+				$if new_int ? && (arm64 || amd64 || rv64 || s390x || ppc64le || loongarch64) {
+					g.write('(u64)(')
+				} $else {
+					g.write('(u32)(')
+				}
 			} else {
 				g.write('(u64)(')
 			}

vlib/v/gen/js/builtin_types.v

@@ -29,7 +29,8 @@ fn (mut g JsGen) to_js_typ_val(t ast.Type) string {
 		return g.to_js_typ_val(sym.info.variants[0])
 	}
 	match sym.kind {
-		.i8, .i16, .int, .i64, .u8, .u16, .u32, .u64, .f32, .f64, .int_literal, .float_literal {
+		.i8, .i16, .i32, .int, .i64, .u8, .u16, .u32, .u64, .f32, .f64, .int_literal,
+		.float_literal {
 			styp = '${prefix}${g.sym_to_js_typ(sym)}(0)'
 		}
 		.bool {
@@ -67,9 +68,16 @@ fn (mut g JsGen) sym_to_js_typ(sym ast.TypeSymbol) string {
 		.i16 {
 			styp = 'i16'
 		}
-		.int {
+		.i32 {
 			styp = 'int'
 		}
+		.int {
+			$if new_int ? && (arm64 || amd64 || rv64 || s390x || ppc64le || loongarch64) {
+				styp = 'i64'
+			} $else {
+				styp = 'int'
+			}
+		}
 		.i64 {
 			styp = 'i64'
 		}
@@ -352,7 +360,7 @@ fn (mut g JsGen) gen_builtin_type_defs() {
 	for typ_name in v_types {
 		// TODO: JsDoc
 		match typ_name {
-			'i8', 'i16', 'int', 'int_literal' {
+			'i8', 'i16', 'i32', 'int', 'int_literal' {
 				// TODO: Bounds checking
 				g.gen_builtin_prototype(
 					typ_name:      typ_name

vlib/v/gen/js/deep_copy.v

@@ -199,7 +199,7 @@ fn (mut g JsGen) final_gen_copy(typ StrType) {
 		return
 	}
 	match styp {
-		'byte', 'u8', 'u16', 'u32', 'u64', 'i16', 'int', 'i64', 'isize', 'usize', 'bool',
+		'byte', 'u8', 'u16', 'u32', 'u64', 'i16', 'i32', 'int', 'i64', 'isize', 'usize', 'bool',
 		'int_literal', 'float_literal', 'f32', 'f64', 'voidptr' {
 			g.definitions.writeln('function ${sym.cname}_\$copy(it) { return new ${sym.cname}(it.val); }')
 			return

vlib/v/gen/js/js.v

@@ -17,9 +17,9 @@ const js_reserved = ['await', 'break', 'case', 'catch', 'class', 'const', 'conti
 	'var', 'void', 'while', 'with', 'yield', 'Number', 'String', 'Boolean', 'Array', 'Map',
 	'document', 'Promise']
 // used to generate type structs
-const v_types = ['i8', 'i16', 'int', 'i64', 'u8', 'u16', 'u32', 'u64', 'f32', 'f64', 'int_literal',
-	'float_literal', 'bool', 'string', 'map', 'array', 'rune', 'any', 'voidptr']
-const shallow_equatables = [ast.Kind.i8, .i16, .int, .i64, .u8, .u16, .u32, .u64, .f32, .f64,
+const v_types = ['i8', 'i16', 'i32', 'int', 'i64', 'u8', 'u16', 'u32', 'u64', 'f32', 'f64',
+	'int_literal', 'float_literal', 'bool', 'string', 'map', 'array', 'rune', 'any', 'voidptr']
+const shallow_equatables = [ast.Kind.i8, .i16, .i32, .int, .i64, .u8, .u16, .u32, .u64, .f32, .f64,
 	.int_literal, .float_literal, .bool, .string]
 const option_name = '_option'
 
@@ -3186,8 +3186,15 @@ fn (mut g JsGen) greater_typ(left ast.Type, right ast.Type) ast.Type {
 		if ast.u32_type_idx in lr {
 			return ast.Type(ast.u32_type_idx)
 		}
+		if ast.i32_type_idx in lr {
+			return ast.Type(ast.i32_type_idx)
+		}
 		if ast.int_type_idx in lr {
-			return ast.Type(ast.int_type_idx)
+			$if new_int ? && (arm64 || amd64 || rv64 || s390x || ppc64le || loongarch64) {
+				return ast.Type(ast.i64_type_idx)
+			} $else {
+				return ast.Type(ast.i32_type_idx)
+			}
 		}
 		if ast.u16_type_idx in lr {
 			return ast.Type(ast.u16_type_idx)

vlib/v/gen/native/amd64.v

@@ -501,10 +501,19 @@ fn (mut c Amd64) inc_var(var Var, config VarConfig) {
 					c.g.write16(0xFF48)
 					size_str = 'QWORD'
 				}
-				ast.i32_type_idx, ast.int_type_idx, ast.u32_type_idx, ast.rune_type_idx {
+				ast.i32_type_idx, ast.u32_type_idx, ast.rune_type_idx {
 					c.g.write8(0xFF)
 					size_str = 'DWORD'
 				}
+				ast.int_type_idx {
+					$if new_int ? && (arm64 || amd64 || rv64 || s390x || ppc64le || loongarch64) {
+						c.g.write16(0xFF48)
+						size_str = 'QWORD'
+					} $else {
+						c.g.write8(0xFF)
+						size_str = 'DWORD'
+					}
+				}
 				ast.i16_type_idx, ast.u16_type_idx {
 					c.g.write8(0xFF)
 					size_str = 'WORD'
@@ -764,13 +773,25 @@ fn (mut c Amd64) mov_reg_to_var(var Var, r Register, config VarConfig) {
 						c.g.write16(0x8948 + if is_extended_register { i32(4) } else { i32(0) })
 						size_str = 'QWORD'
 					}
-					ast.i32_type_idx, ast.int_type_idx, ast.u32_type_idx, ast.rune_type_idx {
+					ast.i32_type_idx, ast.u32_type_idx, ast.rune_type_idx {
 						if is_extended_register {
 							c.g.write8(0x44)
 						}
 						c.g.write8(0x89)
 						size_str = 'DWORD'
 					}
+					ast.int_type_idx {
+						$if new_int ? && (arm64 || amd64 || rv64 || s390x || ppc64le || loongarch64) {
+							c.g.write16(0x8948 + if is_extended_register { i32(4) } else { i32(0) })
+							size_str = 'QWORD'
+						} $else {
+							if is_extended_register {
+								c.g.write8(0x44)
+							}
+							c.g.write8(0x89)
+							size_str = 'DWORD'
+						}
+					}
 					ast.i16_type_idx, ast.u16_type_idx {
 						c.g.write8(0x66)
 						if is_extended_register {
@@ -904,7 +925,7 @@ fn (mut c Amd64) mov_int_to_var(var Var, integer i32, config VarConfig) {
 					c.g.write16(u16(integer))
 					c.g.println('mov WORD PTR[rbp-${int(offset).hex2()}], ${integer}')
 				}
-				ast.i32_type_idx, ast.int_type_idx, ast.u32_type_idx, ast.rune_type_idx {
+				ast.i32_type_idx, ast.u32_type_idx, ast.rune_type_idx {
 					c.g.write8(0xc7)
 					c.g.write8(if is_far_var { i32(0x85) } else { i32(0x45) })
 					if is_far_var {
@@ -915,6 +936,30 @@ fn (mut c Amd64) mov_int_to_var(var Var, integer i32, config VarConfig) {
 					c.g.write32(integer)
 					c.g.println('mov DWORD PTR[rbp-${int(offset).hex2()}], ${integer}')
 				}
+				ast.int_type_idx {
+					$if new_int ? && (arm64 || amd64 || rv64 || s390x || ppc64le || loongarch64) {
+						c.g.write8(0x48)
+						c.g.write8(0xc7)
+						c.g.write8(if is_far_var { i32(0x85) } else { i32(0x45) })
+						if is_far_var {
+							c.g.write32(i32((0xffffffff - i64(offset) + 1) % 0x100000000))
+						} else {
+							c.g.write8((0xff - offset + 1) % 0x100)
+						}
+						c.g.write32(integer)
+						c.g.println('mov QWORD PTR[rbp-${int(offset).hex2()}], ${integer}')
+					} $else {
+						c.g.write8(0xc7)
+						c.g.write8(if is_far_var { i32(0x85) } else { i32(0x45) })
+						if is_far_var {
+							c.g.write32(i32((0xffffffff - i64(offset) + 1) % 0x100000000))
+						} else {
+							c.g.write8((0xff - offset + 1) % 0x100)
+						}
+						c.g.write32(integer)
+						c.g.println('mov DWORD PTR[rbp-${int(offset).hex2()}], ${integer}')
+					}
+				}
 				ast.i64_type_idx, ast.u64_type_idx, ast.isize_type_idx, ast.usize_type_idx,
 				ast.int_literal_type_idx {
 					c.g.write8(0x48)
@@ -3950,7 +3995,7 @@ fn (mut c Amd64) zero_fill(size i32, var LocalVar) {
 		left -= 8
 	}
 	if left >= 4 {
-		c.mov_int_to_var(var, 0, offset: size - left, typ: ast.int_type_idx)
+		c.mov_int_to_var(var, 0, offset: size - left, typ: ast.i32_type_idx)
 		left -= 4
 	}
 	if left >= 2 {

vlib/v/gen/native/gen.v

@@ -827,24 +827,64 @@ fn (mut g Gen) get_type_size(raw_type ast.Type) i32 {
 	}
 	if typ in ast.number_type_idxs {
 		return match typ {
-			ast.i8_type_idx { 1 }
-			ast.u8_type_idx { 1 }
-			ast.i16_type_idx { 2 }
-			ast.u16_type_idx { 2 }
-			ast.int_type_idx { 4 } // TODO: change when V will have changed
-			ast.i32_type_idx { 4 }
-			ast.u32_type_idx { 4 }
-			ast.i64_type_idx { 8 }
-			ast.u64_type_idx { 8 }
-			ast.isize_type_idx { 8 }
-			ast.usize_type_idx { 8 }
-			ast.int_literal_type_idx { 8 }
-			ast.f32_type_idx { 4 }
-			ast.f64_type_idx { 8 }
-			ast.float_literal_type_idx { 8 }
-			ast.char_type_idx { 1 }
-			ast.rune_type_idx { 4 }
-			else { g.n_error('${@LOCATION} unknown type size ${typ}') }
+			ast.i8_type_idx {
+				1
+			}
+			ast.u8_type_idx {
+				1
+			}
+			ast.i16_type_idx {
+				2
+			}
+			ast.u16_type_idx {
+				2
+			}
+			ast.int_type_idx {
+				$if new_int ? && (arm64 || amd64 || rv64 || s390x || ppc64le || loongarch64) {
+					8
+				} $else {
+					4
+				}
+			}
+			ast.i32_type_idx {
+				4
+			}
+			ast.u32_type_idx {
+				4
+			}
+			ast.i64_type_idx {
+				8
+			}
+			ast.u64_type_idx {
+				8
+			}
+			ast.isize_type_idx {
+				8
+			}
+			ast.usize_type_idx {
+				8
+			}
+			ast.int_literal_type_idx {
+				8
+			}
+			ast.f32_type_idx {
+				4
+			}
+			ast.f64_type_idx {
+				8
+			}
+			ast.float_literal_type_idx {
+				8
+			}
+			ast.char_type_idx {
+				1
+			}
+			ast.rune_type_idx {
+				4
+			}
+			else {
+				g.n_error('${@LOCATION} unknown type size ${typ}')
+			}
 		}
 	}
 	if typ.is_bool() {

vlib/v/gen/wasm/ops.v

@@ -37,9 +37,16 @@ pub fn (mut g Gen) get_wasm_type(typ_ ast.Type) wasm.ValType {
 		return match typ {
 			ast.isize_type_idx, ast.usize_type_idx, ast.i8_type_idx, ast.u8_type_idx,
 			ast.char_type_idx, ast.rune_type_idx, ast.i16_type_idx, ast.u16_type_idx,
-			ast.int_type_idx, ast.u32_type_idx {
+			ast.i32_type_idx, ast.u32_type_idx {
 				wasm.ValType.i32_t
 			}
+			ast.int_type_idx {
+				$if new_int ? && (arm64 || amd64 || rv64 || s390x || ppc64le || loongarch64) {
+					wasm.ValType.i64_t
+				} $else {
+					wasm.ValType.i32_t
+				}
+			}
 			ast.i64_type_idx, ast.u64_type_idx {
 				wasm.ValType.i64_t
 			}

vlib/v/parser/parse_type.v

@@ -702,6 +702,9 @@ fn (mut p Parser) parse_any_type(language ast.Language, is_ptr bool, check_dot b
 					'i16' {
 						ret = ast.i16_type
 					}
+					'i32' {
+						ret = ast.i32_type
+					}
 					'int' {
 						ret = ast.int_type
 					}
@@ -856,7 +859,7 @@ fn (mut p Parser) find_type_or_add_placeholder(name string, language ast.Languag
 		return typ
 	}
 	// not found - add placeholder
-	idx = p.table.add_placeholder_type(name, language)
+	idx = p.table.add_placeholder_type(name, name, language)
 	return ast.new_type(idx)
 }
 
@@ -936,10 +939,10 @@ fn (mut p Parser) parse_generic_inst_type(name string) ast.Type {
 		if gt_idx > 0 {
 			return ast.new_type(gt_idx)
 		}
-		gt_idx = p.table.add_placeholder_type(bs_name, .v)
+		gt_idx = p.table.add_placeholder_type(bs_name, bs_cname, .v)
 		mut parent_idx := p.table.type_idxs[name]
 		if parent_idx == 0 {
-			parent_idx = p.table.add_placeholder_type(name, .v)
+			parent_idx = p.table.add_placeholder_type(name, name, .v)
 		}
 		parent_sym := p.table.sym(ast.new_type(parent_idx))
 		match parent_sym.info {

vlib/v/pref/pref.v

@@ -252,8 +252,6 @@ pub mut:
 	warn_about_allocs bool // -warn-about-allocs warngs about every single allocation, e.g. 'hi $name'. Mostly for low level development where manual memory management is used.
 	// game prototyping flags:
 	div_by_zero_is_zero bool // -div-by-zero-is-zero makes so `x / 0 == 0`, i.e. eliminates the division by zero panics/segfaults
-	// temp
-	// use_64_int bool
 	// forwards compatibility settings:
 	relaxed_gcc14 bool = true // turn on the generated pragmas, that make gcc versions > 14 a lot less pedantic. The default is to have those pragmas in the generated C output, so that gcc-14 can be used on Arch etc.
 	//
@@ -424,9 +422,6 @@ pub fn parse_args_and_show_errors(known_external_commands []string, args []strin
 			'-progress' {
 				// processed by testing tools in cmd/tools/modules/testing/common.v
 			}
-			//'-i64' {
-			// res.use_64_int = true
-			//}
 			'-Wimpure-v' {
 				res.warn_impure_v = true
 			}