wasm: Enable passing behavior tests

This also adds some float-related instructions to MIR/Emit

src/arch/wasm/Emit.zig

@@ -153,6 +153,34 @@ pub fn emitMir(emit: *Emit) InnerError!void {
             .i64_shl => try emit.emitTag(tag),
             .i64_shr_s => try emit.emitTag(tag),
             .i64_shr_u => try emit.emitTag(tag),
+            .f32_abs => try emit.emitTag(tag),
+            .f32_neg => try emit.emitTag(tag),
+            .f32_ceil => try emit.emitTag(tag),
+            .f32_floor => try emit.emitTag(tag),
+            .f32_trunc => try emit.emitTag(tag),
+            .f32_nearest => try emit.emitTag(tag),
+            .f32_sqrt => try emit.emitTag(tag),
+            .f32_add => try emit.emitTag(tag),
+            .f32_sub => try emit.emitTag(tag),
+            .f32_mul => try emit.emitTag(tag),
+            .f32_div => try emit.emitTag(tag),
+            .f32_min => try emit.emitTag(tag),
+            .f32_max => try emit.emitTag(tag),
+            .f32_copysign => try emit.emitTag(tag),
+            .f64_abs => try emit.emitTag(tag),
+            .f64_neg => try emit.emitTag(tag),
+            .f64_ceil => try emit.emitTag(tag),
+            .f64_floor => try emit.emitTag(tag),
+            .f64_trunc => try emit.emitTag(tag),
+            .f64_nearest => try emit.emitTag(tag),
+            .f64_sqrt => try emit.emitTag(tag),
+            .f64_add => try emit.emitTag(tag),
+            .f64_sub => try emit.emitTag(tag),
+            .f64_mul => try emit.emitTag(tag),
+            .f64_div => try emit.emitTag(tag),
+            .f64_min => try emit.emitTag(tag),
+            .f64_max => try emit.emitTag(tag),
+            .f64_copysign => try emit.emitTag(tag),
             .i32_wrap_i64 => try emit.emitTag(tag),
             .i64_extend_i32_s => try emit.emitTag(tag),
             .i64_extend_i32_u => try emit.emitTag(tag),

src/arch/wasm/Mir.zig

@@ -369,6 +369,62 @@ pub const Inst = struct {
         /// Uses `tag`
         i64_shr_u = 0x88,
         /// Uses `tag`
+        f32_abs = 0x8B,
+        /// Uses `tag`
+        f32_neg = 0x8C,
+        /// Uses `tag`
+        f32_ceil = 0x8D,
+        /// Uses `tag`
+        f32_floor = 0x8E,
+        /// Uses `tag`
+        f32_trunc = 0x8F,
+        /// Uses `tag`
+        f32_nearest = 0x90,
+        /// Uses `tag`
+        f32_sqrt = 0x91,
+        /// Uses `tag`
+        f32_add = 0x92,
+        /// Uses `tag`
+        f32_sub = 0x93,
+        /// Uses `tag`
+        f32_mul = 0x94,
+        /// Uses `tag`
+        f32_div = 0x95,
+        /// Uses `tag`
+        f32_min = 0x96,
+        /// Uses `tag`
+        f32_max = 0x97,
+        /// Uses `tag`
+        f32_copysign = 0x98,
+        /// Uses `tag`
+        f64_abs = 0x99,
+        /// Uses `tag`
+        f64_neg = 0x9A,
+        /// Uses `tag`
+        f64_ceil = 0x9B,
+        /// Uses `tag`
+        f64_floor = 0x9C,
+        /// Uses `tag`
+        f64_trunc = 0x9D,
+        /// Uses `tag`
+        f64_nearest = 0x9E,
+        /// Uses `tag`
+        f64_sqrt = 0x9F,
+        /// Uses `tag`
+        f64_add = 0xA0,
+        /// Uses `tag`
+        f64_sub = 0xA1,
+        /// Uses `tag`
+        f64_mul = 0xA2,
+        /// Uses `tag`
+        f64_div = 0xA3,
+        /// Uses `tag`
+        f64_min = 0xA4,
+        /// Uses `tag`
+        f64_max = 0xA5,
+        /// Uses `tag`
+        f64_copysign = 0xA6,
+        /// Uses `tag`
         i32_wrap_i64 = 0xA7,
         /// Uses `tag`
         i32_trunc_f32_s = 0xA8,

test/behavior.zig

@@ -18,14 +18,19 @@ test {
     _ = @import("behavior/bugs/679.zig");
     _ = @import("behavior/bugs/704.zig");
     _ = @import("behavior/bugs/718.zig");
+    _ = @import("behavior/bugs/726.zig");
+    _ = @import("behavior/bugs/828.zig");
     _ = @import("behavior/bugs/1025.zig");
     _ = @import("behavior/bugs/1076.zig");
     _ = @import("behavior/bugs/1111.zig");
     _ = @import("behavior/bugs/1277.zig");
     _ = @import("behavior/bugs/1310.zig");
     _ = @import("behavior/bugs/1381.zig");
+    _ = @import("behavior/bugs/1421.zig");
+    _ = @import("behavior/bugs/1442.zig");
     _ = @import("behavior/bugs/1486.zig");
     _ = @import("behavior/bugs/1500.zig");
+    _ = @import("behavior/bugs/1607.zig");
     _ = @import("behavior/bugs/1735.zig");
     _ = @import("behavior/bugs/1741.zig");
     _ = @import("behavior/bugs/1914.zig");
@@ -38,25 +43,34 @@ test {
     _ = @import("behavior/bugs/3046.zig");
     _ = @import("behavior/bugs/3112.zig");
     _ = @import("behavior/bugs/3367.zig");
+    _ = @import("behavior/bugs/3384.zig");
     _ = @import("behavior/bugs/3586.zig");
+    _ = @import("behavior/bugs/3742.zig");
     _ = @import("behavior/bugs/4328.zig");
     _ = @import("behavior/bugs/4560.zig");
     _ = @import("behavior/bugs/4769_a.zig");
     _ = @import("behavior/bugs/4769_b.zig");
     _ = @import("behavior/bugs/4954.zig");
+    _ = @import("behavior/bugs/5398.zig");
+    _ = @import("behavior/bugs/5413.zig");
+    _ = @import("behavior/bugs/5474.zig");
+    _ = @import("behavior/bugs/5487.zig");
     _ = @import("behavior/bugs/6850.zig");
+    _ = @import("behavior/bugs/7003.zig");
     _ = @import("behavior/bugs/7250.zig");
     _ = @import("behavior/bugs/11100.zig");
+    _ = @import("behavior/bugs/10970.zig");
     _ = @import("behavior/call.zig");
     _ = @import("behavior/cast.zig");
     _ = @import("behavior/comptime_memory.zig");
     _ = @import("behavior/defer.zig");
     _ = @import("behavior/enum.zig");
     _ = @import("behavior/error.zig");
+    _ = @import("behavior/field_parent_ptr.zig");
     _ = @import("behavior/floatop.zig");
-    _ = @import("behavior/fn.zig");
     _ = @import("behavior/fn_delegation.zig");
     _ = @import("behavior/fn_in_struct_in_comptime.zig");
+    _ = @import("behavior/fn.zig");
     _ = @import("behavior/for.zig");
     _ = @import("behavior/generics.zig");
     _ = @import("behavior/hasdecl.zig");
@@ -69,6 +83,7 @@ test {
     _ = @import("behavior/ir_block_deps.zig");
     _ = @import("behavior/math.zig");
     _ = @import("behavior/member_func.zig");
+    _ = @import("behavior/merge_error_sets.zig");
     _ = @import("behavior/muladd.zig");
     _ = @import("behavior/namespace_depends_on_compile_var.zig");
     _ = @import("behavior/null.zig");
@@ -79,10 +94,14 @@ test {
     _ = @import("behavior/pub_enum.zig");
     _ = @import("behavior/ref_var_in_if_after_if_2nd_switch_prong.zig");
     _ = @import("behavior/reflection.zig");
-    _ = @import("behavior/slice.zig");
+    _ = @import("behavior/sizeof_and_typeof.zig");
     _ = @import("behavior/slice_sentinel_comptime.zig");
+    _ = @import("behavior/slice.zig");
     _ = @import("behavior/src.zig");
+    _ = @import("behavior/struct_contains_null_ptr_itself.zig");
     _ = @import("behavior/struct.zig");
+    _ = @import("behavior/switch_prong_err_enum.zig");
+    _ = @import("behavior/switch_prong_implicit_cast.zig");
     _ = @import("behavior/switch.zig");
     _ = @import("behavior/this.zig");
     _ = @import("behavior/truncate.zig");
@@ -113,22 +132,11 @@ test {
     {
         // Tests that pass for stage1, llvm backend, C backend
         _ = @import("behavior/bugs/421.zig");
-        _ = @import("behavior/bugs/726.zig");
-        _ = @import("behavior/bugs/828.zig");
-        _ = @import("behavior/bugs/1421.zig");
-        _ = @import("behavior/bugs/1607.zig");
-        _ = @import("behavior/bugs/3384.zig");
-        _ = @import("behavior/bugs/5398.zig");
-        _ = @import("behavior/bugs/5413.zig");
-        _ = @import("behavior/bugs/5474.zig");
-        _ = @import("behavior/bugs/7003.zig");
         _ = @import("behavior/bugs/9584.zig");
-        _ = @import("behavior/bugs/10970.zig");
         _ = @import("behavior/cast_int.zig");
         _ = @import("behavior/eval.zig");
         _ = @import("behavior/export_self_referential_type_info.zig");
         _ = @import("behavior/int128.zig");
-        _ = @import("behavior/merge_error_sets.zig");
         _ = @import("behavior/translate_c_macros.zig");
 
         if (builtin.zig_backend != .stage2_c) {
@@ -137,17 +145,9 @@ test {
             _ = @import("behavior/maximum_minimum.zig");
             _ = @import("behavior/popcount.zig");
             _ = @import("behavior/saturating_arithmetic.zig");
-            _ = @import("behavior/sizeof_and_typeof.zig");
             _ = @import("behavior/widening.zig");
-            _ = @import("behavior/bugs/1442.zig");
             _ = @import("behavior/bugs/2114.zig");
-            _ = @import("behavior/bugs/3742.zig");
-            _ = @import("behavior/bugs/5487.zig");
-            _ = @import("behavior/struct_contains_null_ptr_itself.zig");
-            _ = @import("behavior/switch_prong_err_enum.zig");
-            _ = @import("behavior/switch_prong_implicit_cast.zig");
             _ = @import("behavior/union_with_members.zig");
-            _ = @import("behavior/field_parent_ptr.zig");
 
             if (builtin.zig_backend == .stage1) {
                 // Tests that only pass for the stage1 backend.

test/behavior/align.zig

@@ -158,7 +158,6 @@ fn give() anyerror!u128 {
 
 test "page aligned array on stack" {
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
-    if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
@@ -359,7 +358,6 @@ test "read 128-bit field from default aligned struct in global memory" {
 test "struct field explicit alignment" {
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_llvm) return error.SkipZigTest;
-    if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
@@ -411,7 +409,6 @@ test "align(N) on functions" {
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage1) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_llvm) return error.SkipZigTest;
-    if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;

test/behavior/bugs/10970.zig

@@ -4,6 +4,10 @@ fn retOpt() ?u32 {
     return null;
 }
 test {
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     var cond = true;
     const opt = while (cond) {
         if (retOpt()) |opt| {

test/behavior/bugs/1421.zig

@@ -1,5 +1,6 @@
 const std = @import("std");
 const expect = std.testing.expect;
+const builtin = @import("builtin");
 
 const S = struct {
     fn method() std.builtin.Type {
@@ -8,6 +9,10 @@ const S = struct {
 };
 
 test "functions with return type required to be comptime are generic" {
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     const ti = S.method();
     try expect(@as(std.builtin.TypeId, ti) == std.builtin.TypeId.Struct);
 }

test/behavior/bugs/1442.zig

@@ -7,6 +7,10 @@ const Union = union(enum) {
 };
 
 test "const error union field alignment" {
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     var union_or_err: anyerror!Union = Union{ .Color = 1234 };
     try std.testing.expect((union_or_err catch unreachable).Color == 1234);
 }

test/behavior/bugs/1607.zig

@@ -1,5 +1,6 @@
 const std = @import("std");
 const testing = std.testing;
+const builtin = @import("builtin");
 
 const a = [_]u8{ 1, 2, 3 };
 
@@ -10,6 +11,10 @@ fn checkAddress(s: []const u8) !void {
 }
 
 test "slices pointing at the same address as global array." {
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     try checkAddress(&a);
     comptime try checkAddress(&a);
 }

test/behavior/bugs/3742.zig

@@ -1,4 +1,5 @@
 const std = @import("std");
+const builtin = @import("builtin");
 
 pub const GET = struct {
     key: []const u8,
@@ -34,5 +35,9 @@ pub const ArgSerializer = struct {
 };
 
 test "fixed" {
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     ArgSerializer.serializeCommand(GET.init("banana"));
 }

test/behavior/bugs/5398.zig

@@ -1,5 +1,6 @@
 const std = @import("std");
 const testing = std.testing;
+const builtin = @import("builtin");
 
 pub const Mesh = struct {
     id: u32,
@@ -18,6 +19,10 @@ pub const Renderable = struct {
 var renderable: Renderable = undefined;
 
 test "assignment of field with padding" {
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     renderable = Renderable{
         .mesh = Mesh{ .id = 0 },
         .material = Material{

test/behavior/bugs/5474.zig

@@ -49,11 +49,19 @@ fn constant() !void {
 }
 
 test "pointer-to-array constness for zero-size elements, var" {
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     try mutable();
     comptime try mutable();
 }
 
 test "pointer-to-array constness for zero-size elements, const" {
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     try constant();
     comptime try constant();
 }

test/behavior/bugs/5487.zig

@@ -1,4 +1,5 @@
 const io = @import("std").io;
+const builtin = @import("builtin");
 
 pub fn write(_: void, bytes: []const u8) !usize {
     _ = bytes;
@@ -9,5 +10,9 @@ pub fn writer() io.Writer(void, @typeInfo(@typeInfo(@TypeOf(write)).Fn.return_ty
 }
 
 test "crash" {
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     _ = io.multiWriter(.{writer()});
 }

test/behavior/bugs/726.zig

@@ -1,12 +1,23 @@
 const expect = @import("std").testing.expect;
+const builtin = @import("builtin");
 
 test "@ptrCast from const to nullable" {
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
+
     const c: u8 = 4;
     var x: ?*const u8 = @ptrCast(?*const u8, &c);
     try expect(x.?.* == 4);
 }
 
 test "@ptrCast from var in empty struct to nullable" {
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
+
     const container = struct {
         var c: u8 = 4;
     };

test/behavior/bugs/828.zig

@@ -1,3 +1,5 @@
+const builtin = @import("builtin");
+
 const CountBy = struct {
     a: usize,
 
@@ -28,6 +30,9 @@ fn constCount(comptime cb: *const CountBy, comptime unused: u32) void {
 }
 
 test "comptime struct return should not return the same instance" {
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
+
     //the first parameter must be passed by reference to trigger the bug
     //a second parameter is required to trigger the bug
     const ValA = constCount(&CountBy.One, 12);

test/behavior/enum.zig

@@ -938,7 +938,6 @@ test "constant enum initialization with differing sizes" {
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
-    if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
 
     try test3_1(test3_foo);
     try test3_2(test3_bar);

test/behavior/error.zig

@@ -156,7 +156,6 @@ fn bar2() (error{}!void) {}
 
 test "error union type " {
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
-    if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
 
     try testErrorUnionType();
     comptime try testErrorUnionType();
@@ -199,7 +198,6 @@ fn testErrorSetType() !void {
 test "explicit error set cast" {
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
-    if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
 
     try testExplicitErrorSetCast(Set1.A);
     comptime try testExplicitErrorSetCast(Set1.A);
@@ -296,7 +294,6 @@ test "error: Infer error set from literals" {
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
-    if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
 
     _ = nullLiteral("n") catch |err| handleErrors(err);
     _ = floatLiteral("n") catch |err| handleErrors(err);

test/behavior/field_parent_ptr.zig

@@ -1,11 +1,20 @@
 const expect = @import("std").testing.expect;
+const builtin = @import("builtin");
 
 test "@fieldParentPtr non-first field" {
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     try testParentFieldPtr(&foo.c);
     comptime try testParentFieldPtr(&foo.c);
 }
 
 test "@fieldParentPtr first field" {
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     try testParentFieldPtrFirst(&foo.a);
     comptime try testParentFieldPtrFirst(&foo.a);
 }

test/behavior/math.zig

@@ -191,7 +191,6 @@ test "const number literal" {
 const ten = 10;
 
 test "float equality" {
-    if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO

test/behavior/merge_error_sets.zig

@@ -1,3 +1,4 @@
+const builtin = @import("builtin");
 const A = error{
     FileNotFound,
     NotDir,
@@ -11,6 +12,10 @@ fn foo() C!void {
 }
 
 test "merge error sets" {
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     if (foo()) {
         @panic("unexpected");
     } else |err| switch (err) {

test/behavior/null.zig

@@ -182,7 +182,6 @@ const here_is_a_null_literal = SillyStruct{ .context = null };
 
 test "unwrap optional which is field of global var" {
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
-    if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;

test/behavior/ptrcast.zig

@@ -43,7 +43,6 @@ fn testReinterpretBytesAsExternStruct() !void {
 }
 
 test "reinterpret struct field at comptime" {
-    if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO

test/behavior/sizeof_and_typeof.zig

@@ -18,6 +18,10 @@ test "@sizeOf on compile-time types" {
 }
 
 test "@TypeOf() with multiple arguments" {
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     {
         var var_1: u32 = undefined;
         var var_2: u8 = undefined;
@@ -74,6 +78,8 @@ const P = packed struct {
 };
 
 test "@offsetOf" {
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
 
     // Packed structs have fixed memory layout
     try expect(@offsetOf(P, "a") == 0);
@@ -180,6 +186,10 @@ test "@sizeOf(T) == 0 doesn't force resolving struct size" {
 }
 
 test "@TypeOf() has no runtime side effects" {
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     const S = struct {
         fn foo(comptime T: type, ptr: *T) T {
             ptr.* += 1;
@@ -193,6 +203,10 @@ test "@TypeOf() has no runtime side effects" {
 }
 
 test "branching logic inside @TypeOf" {
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     const S = struct {
         var data: i32 = 0;
         fn foo() anyerror!i32 {

test/behavior/struct_contains_null_ptr_itself.zig

@@ -1,7 +1,12 @@
 const std = @import("std");
 const expect = std.testing.expect;
+const builtin = @import("builtin");
 
 test "struct contains null pointer which contains original struct" {
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     var x: ?*NodeLineComment = null;
     try expect(x == null);
 }

test/behavior/switch_prong_err_enum.zig

@@ -1,4 +1,5 @@
 const expect = @import("std").testing.expect;
+const builtin = @import("builtin");
 
 var read_count: u64 = 0;
 
@@ -20,6 +21,10 @@ fn doThing(form_id: u64) anyerror!FormValue {
 }
 
 test "switch prong returns error enum" {
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     switch (doThing(17) catch unreachable) {
         FormValue.Address => |payload| {
             try expect(payload == 1);

test/behavior/switch_prong_implicit_cast.zig

@@ -1,4 +1,5 @@
 const expect = @import("std").testing.expect;
+const builtin = @import("builtin");
 
 const FormValue = union(enum) {
     One: void,
@@ -14,6 +15,10 @@ fn foo(id: u64) !FormValue {
 }
 
 test "switch prong implicit cast" {
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     const result = switch (foo(2) catch unreachable) {
         FormValue.One => false,
         FormValue.Two => |x| x,

test/behavior/union.zig

@@ -457,7 +457,6 @@ test "initialize global array of union" {
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
 
-    if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
 
     glbl_array[1] = FooUnion{ .U1 = 2 };

test/behavior/var_args.zig

@@ -28,7 +28,6 @@ fn readFirstVarArg(args: anytype) void {
 
 test "send void arg to var args" {
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
-    if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
 
@@ -92,7 +91,6 @@ fn foo2(args: anytype) bool {
 
 test "array of var args functions" {
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
-    if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
 
@@ -102,7 +100,6 @@ test "array of var args functions" {
 
 test "pass zero length array to var args param" {
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
-    if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO