diff --git a/test/cases/compile_errors/stage1/obj/Issue_9165_windows_tcp_server_compilation_error.zig b/test/cases/compile_errors/stage1/obj/Issue_9165_windows_tcp_server_compilation_error.zig
deleted file mode 100644
index 3d150693f556edec171b11cc9f0f851c57336fb2..0000000000000000000000000000000000000000
--- a/test/cases/compile_errors/stage1/obj/Issue_9165_windows_tcp_server_compilation_error.zig
+++ /dev/null
@@ -1,16 +0,0 @@
-const std = @import("std");
-const builtin = @import("builtin");
-pub const io_mode = .evented;
-pub fn main() !void {
-    if (builtin.os.tag == .windows) {
-        _ = try (std.net.StreamServer.init(.{})).accept();
-    } else {
-        @compileError("Unsupported OS");
-    }
-}
-
-// error
-// backend=stage1
-// target=native
-//
-// error: Unsupported OS
diff --git a/test/cases/compile_errors/stage1/obj/calling_a_generic_function_only_known_at_runtime.zig b/test/cases/compile_errors/stage1/obj/calling_a_generic_function_only_known_at_runtime.zig
deleted file mode 100644
index 3081f0f1e184573eccf3625c0373233f8d4494b5..0000000000000000000000000000000000000000
--- a/test/cases/compile_errors/stage1/obj/calling_a_generic_function_only_known_at_runtime.zig
+++ /dev/null
@@ -1,14 +0,0 @@
-var foos = [_]fn(anytype) void { foo1, foo2 };
-
-fn foo1(arg: anytype) void {_ = arg;}
-fn foo2(arg: anytype) void {_ = arg;}
-
-pub fn main() !void {
-    foos[0](true);
-}
-
-// error
-// backend=stage1
-// target=native
-//
-// tmp.zig:7:9: error: calling a generic function requires compile-time known function value
diff --git a/test/cases/compile_errors/stage1/obj/comptime_float_in_asm_input.zig b/test/cases/compile_errors/stage1/obj/comptime_float_in_asm_input.zig
deleted file mode 100644
index 92ffadc4f7b6431ae6985ae0e6ae45932c2be649..0000000000000000000000000000000000000000
--- a/test/cases/compile_errors/stage1/obj/comptime_float_in_asm_input.zig
+++ /dev/null
@@ -1,9 +0,0 @@
-export fn foo() void {
-    asm volatile ("" : : [bar]"r"(3.17) : "");
-}
-
-// error
-// backend=stage1
-// target=native
-//
-// tmp.zig:2:35: error: expected sized integer or sized float, found comptime_float
diff --git a/test/cases/compile_errors/stage1/obj/comptime_int_in_asm_input.zig b/test/cases/compile_errors/stage1/obj/comptime_int_in_asm_input.zig
deleted file mode 100644
index 3e3ccf8c2738073424d8e735b2f9ed14edc0a6dc..0000000000000000000000000000000000000000
--- a/test/cases/compile_errors/stage1/obj/comptime_int_in_asm_input.zig
+++ /dev/null
@@ -1,9 +0,0 @@
-export fn foo() void {
-    asm volatile ("" : : [bar]"r"(3) : "");
-}
-
-// error
-// backend=stage1
-// target=native
-//
-// tmp.zig:2:35: error: expected sized integer or sized float, found comptime_int
diff --git a/test/cases/compile_errors/stage1/obj/double_optional_on_main_return_value.zig b/test/cases/compile_errors/stage1/obj/double_optional_on_main_return_value.zig
deleted file mode 100644
index c61ac400baf048c781f0bee5a4d779696d7583ec..0000000000000000000000000000000000000000
--- a/test/cases/compile_errors/stage1/obj/double_optional_on_main_return_value.zig
+++ /dev/null
@@ -1,8 +0,0 @@
-pub fn main() ??void {
-}
-
-// error
-// backend=stage1
-// target=native
-//
-// error: expected return type of main to be 'void', '!void', 'noreturn', 'u8', or '!u8'
diff --git a/test/cases/compile_errors/stage1/obj/float_literal_too_large_error.zig b/test/cases/compile_errors/stage1/obj/float_literal_too_large_error.zig
deleted file mode 100644
index c3865c31108cadfed1a77490a6a23ea861e6ee79..0000000000000000000000000000000000000000
--- a/test/cases/compile_errors/stage1/obj/float_literal_too_large_error.zig
+++ /dev/null
@@ -1,10 +0,0 @@
-comptime {
-    const a = 0x1.0p18495;
-    _ = a;
-}
-
-// error
-// backend=stage1
-// target=native
-//
-// tmp.zig:2:15: error: float literal out of range of any type
diff --git a/test/cases/compile_errors/stage1/obj/float_literal_too_small_error_denormal.zig b/test/cases/compile_errors/stage1/obj/float_literal_too_small_error_denormal.zig
deleted file mode 100644
index 0b0bfee1de541f72fbbe2f9913449ca9dde3bb8b..0000000000000000000000000000000000000000
--- a/test/cases/compile_errors/stage1/obj/float_literal_too_small_error_denormal.zig
+++ /dev/null
@@ -1,10 +0,0 @@
-comptime {
-    const a = 0x1.0p-19000;
-    _ = a;
-}
-
-// error
-// backend=stage1
-// target=native
-//
-// tmp.zig:2:15: error: float literal out of range of any type
diff --git a/test/cases/compile_errors/stage1/obj/missing_function_call_param.zig b/test/cases/compile_errors/stage1/obj/missing_function_call_param.zig
deleted file mode 100644
index 9e08ed7140c6a50a6a19e79a42b1357a714958a4..0000000000000000000000000000000000000000
--- a/test/cases/compile_errors/stage1/obj/missing_function_call_param.zig
+++ /dev/null
@@ -1,31 +0,0 @@
-const Foo = struct {
-    a: i32,
-    b: i32,
-
-    fn member_a(foo: *const Foo) i32 {
-        return foo.a;
-    }
-    fn member_b(foo: *const Foo) i32 {
-        return foo.b;
-    }
-};
-
-const member_fn_type = @TypeOf(Foo.member_a);
-const members = [_]member_fn_type {
-    Foo.member_a,
-    Foo.member_b,
-};
-
-fn f(foo: *const Foo, index: usize) void {
-    const result = members[index]();
-    _ = foo;
-    _ = result;
-}
-
-export fn entry() usize { return @sizeOf(@TypeOf(f)); }
-
-// error
-// backend=stage1
-// target=native
-//
-// tmp.zig:20:34: error: expected 1 argument(s), found 0
diff --git a/test/cases/compile_errors/stage1/obj/setFloatMode_twice_for_same_scope.zig b/test/cases/compile_errors/stage1/obj/setFloatMode_twice_for_same_scope.zig
deleted file mode 100644
index 41fe6d4d6c4e9d78c5fea3055843a76355d6b061..0000000000000000000000000000000000000000
--- a/test/cases/compile_errors/stage1/obj/setFloatMode_twice_for_same_scope.zig
+++ /dev/null
@@ -1,11 +0,0 @@
-export fn foo() void {
-    @setFloatMode(@import("std").builtin.FloatMode.Optimized);
-    @setFloatMode(@import("std").builtin.FloatMode.Optimized);
-}
-
-// error
-// backend=stage1
-// target=native
-//
-// tmp.zig:3:5: error: float mode set twice for same scope
-// tmp.zig:2:5: note: first set here
diff --git a/test/cases/compile_errors/stage1/obj/setRuntimeSafety_twice_for_same_scope.zig b/test/cases/compile_errors/stage1/obj/setRuntimeSafety_twice_for_same_scope.zig
deleted file mode 100644
index 03a93b68d55ffb08d1c185a5d5cbf33e5ecbdd50..0000000000000000000000000000000000000000
--- a/test/cases/compile_errors/stage1/obj/setRuntimeSafety_twice_for_same_scope.zig
+++ /dev/null
@@ -1,11 +0,0 @@
-export fn foo() void {
-    @setRuntimeSafety(false);
-    @setRuntimeSafety(false);
-}
-
-// error
-// backend=stage1
-// target=native
-//
-// tmp.zig:3:5: error: runtime safety set twice for same scope
-// tmp.zig:2:5: note: first set here
diff --git a/test/cases/compile_errors/stage1/obj/storing_runtime_value_in_compile_time_variable_then_using_it.zig b/test/cases/compile_errors/stage1/obj/storing_runtime_value_in_compile_time_variable_then_using_it.zig
deleted file mode 100644
index 2d85209358de870aedd0cca812642ce672c1baa7..0000000000000000000000000000000000000000
--- a/test/cases/compile_errors/stage1/obj/storing_runtime_value_in_compile_time_variable_then_using_it.zig
+++ /dev/null
@@ -1,49 +0,0 @@
-const Mode = @import("std").builtin.Mode;
-
-fn Free(comptime filename: []const u8) TestCase {
-    return TestCase {
-        .filename = filename,
-        .problem_type = ProblemType.Free,
-    };
-}
-
-fn LibC(comptime filename: []const u8) TestCase {
-    return TestCase {
-        .filename = filename,
-        .problem_type = ProblemType.LinkLibC,
-    };
-}
-
-const TestCase = struct {
-    filename: []const u8,
-    problem_type: ProblemType,
-};
-
-const ProblemType = enum {
-    Free,
-    LinkLibC,
-};
-
-export fn entry() void {
-    const tests = [_]TestCase {
-        Free("001"),
-        Free("002"),
-        LibC("078"),
-        Free("116"),
-        Free("117"),
-    };
-
-    for ([_]Mode { Mode.Debug, Mode.ReleaseSafe, Mode.ReleaseFast }) |mode| {
-        _ = mode;
-        inline for (tests) |test_case| {
-            const foo = test_case.filename ++ ".zig";
-            _ = foo;
-        }
-    }
-}
-
-// error
-// backend=stage1
-// target=native
-//
-// tmp.zig:38:29: error: cannot store runtime value in compile time variable
diff --git a/test/cases/compile_errors/stage1/obj/taking_bit_offset_of_void_field_in_struct.zig b/test/cases/compile_errors/stage1/obj/taking_bit_offset_of_void_field_in_struct.zig
deleted file mode 100644
index e404c3bdd698fe4b4fa42774a841ebe7191c68c9..0000000000000000000000000000000000000000
--- a/test/cases/compile_errors/stage1/obj/taking_bit_offset_of_void_field_in_struct.zig
+++ /dev/null
@@ -1,13 +0,0 @@
-const Empty = struct {
-    val: void,
-};
-export fn foo() void {
-    const fieldOffset = @bitOffsetOf(Empty, "val",);
-    _ = fieldOffset;
-}
-
-// error
-// backend=stage1
-// target=native
-//
-// tmp.zig:5:45: error: zero-bit field 'val' in struct 'Empty' has no offset
diff --git a/test/cases/compile_errors/stage1/obj/taking_byte_offset_of_void_field_in_struct.zig b/test/cases/compile_errors/stage1/obj/taking_byte_offset_of_void_field_in_struct.zig
deleted file mode 100644
index eb7d83efff7c9049cc68118178b5dd3d29a78506..0000000000000000000000000000000000000000
--- a/test/cases/compile_errors/stage1/obj/taking_byte_offset_of_void_field_in_struct.zig
+++ /dev/null
@@ -1,13 +0,0 @@
-const Empty = struct {
-    val: void,
-};
-export fn foo() void {
-    const fieldOffset = @offsetOf(Empty, "val",);
-    _ = fieldOffset;
-}
-
-// error
-// backend=stage1
-// target=native
-//
-// tmp.zig:5:42: error: zero-bit field 'val' in struct 'Empty' has no offset
diff --git a/test/cases/compile_errors/stage1/obj/wrong_panic_signature_generic_function.zig b/test/cases/compile_errors/stage1/obj/wrong_panic_signature_generic_function.zig
deleted file mode 100644
index 37af5e5fce81fbe1e5567cb07fa20eead57a5ab0..0000000000000000000000000000000000000000
--- a/test/cases/compile_errors/stage1/obj/wrong_panic_signature_generic_function.zig
+++ /dev/null
@@ -1,12 +0,0 @@
-pub fn panic(comptime msg: []const u8, error_return_trace: ?*builtin.StackTrace, _: ?usize) noreturn {
-    _ = msg; _ = error_return_trace;
-    while (true) {}
-}
-const builtin = @import("std").builtin;
-
-// error
-// backend=stage1
-// target=native
-//
-// error: expected type 'fn([]const u8, ?*std.builtin.StackTrace, ?usize) noreturn', found 'fn([]const u8,anytype,anytype) anytype'
-// note: only one of the functions is generic
diff --git a/test/cases/compile_errors/stage1/obj/wrong_panic_signature_runtime_function.zig b/test/cases/compile_errors/stage1/obj/wrong_panic_signature_runtime_function.zig
deleted file mode 100644
index 3848a5bf0c0d262f26c3ee0723e62ec094724fbb..0000000000000000000000000000000000000000
--- a/test/cases/compile_errors/stage1/obj/wrong_panic_signature_runtime_function.zig
+++ /dev/null
@@ -1,10 +0,0 @@
-test {}
-
-pub fn panic() void {}
-
-
-// error
-// backend=stage1
-// target=native
-//
-// error: expected type 'fn([]const u8, ?*std.builtin.StackTrace, ?usize) noreturn', found 'fn() void'
diff --git a/test/cases/compile_errors/stage1/obj/wrong_return_type_for_main.zig b/test/cases/compile_errors/stage1/obj/wrong_return_type_for_main.zig
deleted file mode 100644
index 218ef0b65d254c68884b6c9f8032874ccbddce9c..0000000000000000000000000000000000000000
--- a/test/cases/compile_errors/stage1/obj/wrong_return_type_for_main.zig
+++ /dev/null
@@ -1,7 +0,0 @@
-pub fn main() f32 { }
-
-// error
-// backend=stage1
-// target=native
-//
-// error: expected return type of main to be 'void', '!void', 'noreturn', 'u8', or '!u8'