From 22895f5616c663bb7b8ad9866c29d00bc4bc315c Mon Sep 17 00:00:00 2001
From: joachimschmidt557 <joachim.schmidt557@outlook.com>
Date: Mon, 14 Feb 2022 22:33:01 +0100
Subject: [PATCH] stage2 AArch64: Enable behavior testing

---
 src/arch/aarch64/CodeGen.zig    | 34 +++++++++++++++++++++++++++----
 test/behavior.zig               |  2 +-
 test/behavior/align.zig         | 18 +++++++++++++++++
 test/behavior/alignof.zig       |  1 +
 test/behavior/array.zig         | 27 +++++++++++++++++++++++++
 test/behavior/basic.zig         | 32 +++++++++++++++++++++++++++++
 test/behavior/bit_shifting.zig  |  1 +
 test/behavior/bugs/1381.zig     |  1 +
 test/behavior/bugs/1486.zig     |  2 ++
 test/behavior/bugs/1735.zig     |  1 +
 test/behavior/bugs/1741.zig     |  1 +
 test/behavior/bugs/2006.zig     |  1 +
 test/behavior/bugs/2578.zig     |  1 +
 test/behavior/bugs/3007.zig     |  1 +
 test/behavior/bugs/3112.zig     |  1 +
 test/behavior/bugs/3367.zig     |  1 +
 test/behavior/bugs/394.zig      |  1 +
 test/behavior/bugs/656.zig      |  1 +
 test/behavior/bugs/7250.zig     |  1 +
 test/behavior/cast.zig          | 36 +++++++++++++++++++++++++++++++++
 test/behavior/fn_delegation.zig |  1 +
 test/behavior/ir_block_deps.zig |  1 +
 test/behavior/optional.zig      | 10 +++++++++
 test/behavior/reflection.zig    |  1 +
 test/behavior/slice.zig         | 14 +++++++++++++
 test/behavior/struct.zig        | 28 +++++++++++++++++++++++++
 test/behavior/truncate.zig      |  9 +++++++++
 test/behavior/var_args.zig      |  3 +++
 28 files changed, 226 insertions(+), 5 deletions(-)

diff --git a/src/arch/aarch64/CodeGen.zig b/src/arch/aarch64/CodeGen.zig
index 55c8c64794..b9d5a29f18 100644
--- a/src/arch/aarch64/CodeGen.zig
+++ b/src/arch/aarch64/CodeGen.zig
@@ -1029,14 +1029,16 @@ fn binOpRegister(
     if (!rhs_is_register) try self.genSetReg(rhs_ty, rhs_reg, rhs);
 
     const mir_tag: Mir.Inst.Tag = switch (tag) {
-        .add => .add_shifted_register,
-        .sub => .sub_shifted_register,
+        .add, .ptr_add => .add_shifted_register,
+        .sub, .ptr_sub => .sub_shifted_register,
         .xor => .eor_shifted_register,
         else => unreachable,
     };
     const mir_data: Mir.Inst.Data = switch (tag) {
         .add,
         .sub,
+        .ptr_add,
+        .ptr_sub,
         => .{ .rrr_imm6_shift = .{
             .rd = dest_reg,
             .rn = lhs_reg,
@@ -1225,7 +1227,24 @@ fn binOp(
         },
         .ptr_add,
         .ptr_sub,
-        => return self.fail("TODO ptr_add, ptr_sub", .{}),
+        => {
+            switch (lhs_ty.zigTypeTag()) {
+                .Pointer => {
+                    const ptr_ty = lhs_ty;
+                    const pointee_ty = switch (ptr_ty.ptrSize()) {
+                        .One => ptr_ty.childType().childType(), // ptr to array, so get array element type
+                        else => ptr_ty.childType(),
+                    };
+
+                    if (pointee_ty.abiSize(self.target.*) > 1) {
+                        return self.fail("TODO ptr_add, ptr_sub with more element sizes", .{});
+                    }
+
+                    return try self.binOpRegister(tag, maybe_inst, lhs, rhs, lhs_ty, rhs_ty);
+                },
+                else => unreachable,
+            }
+        },
         else => unreachable,
     }
 }
@@ -1439,7 +1458,14 @@ fn airWrapErrUnionPayload(self: *Self, inst: Air.Inst.Index) !void {
 /// E to E!T
 fn airWrapErrUnionErr(self: *Self, inst: Air.Inst.Index) !void {
     const ty_op = self.air.instructions.items(.data)[inst].ty_op;
-    const result: MCValue = if (self.liveness.isUnused(inst)) .dead else return self.fail("TODO implement wrap errunion error for {}", .{self.target.cpu.arch});
+    const result: MCValue = if (self.liveness.isUnused(inst)) .dead else result: {
+        const error_union_ty = self.air.getRefType(ty_op.ty);
+        const payload_ty = error_union_ty.errorUnionPayload();
+        const mcv = try self.resolveInst(ty_op.operand);
+        if (!payload_ty.hasRuntimeBits()) break :result mcv;
+
+        return self.fail("TODO implement wrap errunion error for non-empty payloads", .{});
+    };
     return self.finishAir(inst, result, .{ ty_op.operand, .none, .none });
 }
 
diff --git a/test/behavior.zig b/test/behavior.zig
index db6863a8b0..abfd8fb0bf 100644
--- a/test/behavior.zig
+++ b/test/behavior.zig
@@ -54,7 +54,7 @@ test {
         _ = @import("behavior/decltest.zig");
     }
 
-    if (builtin.zig_backend != .stage2_arm and builtin.zig_backend != .stage2_x86_64) {
+    if (builtin.zig_backend != .stage2_arm and builtin.zig_backend != .stage2_x86_64 and builtin.zig_backend != .stage2_aarch64) {
         // Tests that pass (partly) for stage1, llvm backend, C backend, wasm backend.
         _ = @import("behavior/bitcast.zig");
         _ = @import("behavior/bugs/624.zig");
diff --git a/test/behavior/align.zig b/test/behavior/align.zig
index 96278524c0..a8d8fcd206 100644
--- a/test/behavior/align.zig
+++ b/test/behavior/align.zig
@@ -27,6 +27,7 @@ test "default alignment allows unspecified in type syntax" {
 }
 
 test "implicitly decreasing pointer alignment" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     const a: u32 align(4) = 3;
     const b: u32 align(8) = 4;
     try expect(addUnaligned(&a, &b) == 7);
@@ -37,6 +38,7 @@ fn addUnaligned(a: *align(1) const u32, b: *align(1) const u32) u32 {
 }
 
 test "@alignCast pointers" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     var x: u32 align(4) = 1;
     expectsOnly1(&x);
     try expect(x == 2);
@@ -102,6 +104,7 @@ fn fnWithAlignedStack() i32 {
 }
 
 test "implicitly decreasing slice alignment" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const a: u32 align(4) = 3;
@@ -113,6 +116,7 @@ fn addUnalignedSlice(a: []align(1) const u32, b: []align(1) const u32) u32 {
 }
 
 test "specifying alignment allows pointer cast" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     try testBytesAlign(0x33);
@@ -124,6 +128,7 @@ fn testBytesAlign(b: u8) !void {
 }
 
 test "@alignCast slices" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64 or builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     var array align(4) = [_]u32{ 1, 1 };
@@ -139,6 +144,7 @@ fn sliceExpects4(slice: []align(4) u32) void {
 }
 
 test "return error union with 128-bit integer" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64 or builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     try expect(3 == try give());
@@ -148,6 +154,7 @@ 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;
@@ -173,6 +180,7 @@ fn noop1() align(1) void {}
 fn noop4() align(4) void {}
 
 test "function alignment" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
@@ -189,6 +197,7 @@ test "function alignment" {
 }
 
 test "implicitly decreasing fn alignment" {
+    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_c) return error.SkipZigTest;
@@ -216,6 +225,7 @@ fn alignedBig() align(16) i32 {
 }
 
 test "@alignCast functions" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage1) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest;
@@ -239,6 +249,7 @@ fn simple4() align(4) i32 {
 }
 
 test "generic function with align param" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_llvm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest;
@@ -260,6 +271,7 @@ fn whyWouldYouEverDoThis(comptime align_bytes: u8) align(align_bytes) u8 {
 }
 
 test "runtime known array index has best alignment possible" {
+    if (builtin.zig_backend == .stage2_aarch64) 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;
@@ -302,6 +314,7 @@ fn testIndex2(ptr: [*]align(4) u8, index: usize, comptime T: type) !void {
 }
 
 test "alignment of function with c calling convention" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage1) return error.SkipZigTest;
 
     var runtime_nothing = &nothing;
@@ -318,6 +331,7 @@ const DefaultAligned = struct {
 };
 
 test "read 128-bit field from default aligned struct in stack memory" {
+    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_x86_64) return error.SkipZigTest;
@@ -337,6 +351,7 @@ var default_aligned_global = DefaultAligned{
 };
 
 test "read 128-bit field from default aligned struct in global memory" {
+    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;
@@ -348,6 +363,7 @@ 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;
@@ -369,6 +385,7 @@ test "struct field explicit alignment" {
 }
 
 test "align(@alignOf(T)) T does not force resolution of T" {
+    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;
@@ -397,6 +414,7 @@ test "align(@alignOf(T)) T does not force resolution of T" {
 }
 
 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;
diff --git a/test/behavior/alignof.zig b/test/behavior/alignof.zig
index 749855db52..5a49146694 100644
--- a/test/behavior/alignof.zig
+++ b/test/behavior/alignof.zig
@@ -11,6 +11,7 @@ const Foo = struct {
 };
 
 test "@alignOf(T) before referencing T" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
diff --git a/test/behavior/array.zig b/test/behavior/array.zig
index 23820e71b5..e93f0f3e90 100644
--- a/test/behavior/array.zig
+++ b/test/behavior/array.zig
@@ -6,6 +6,7 @@ const expect = testing.expect;
 const expectEqual = testing.expectEqual;
 
 test "array to slice" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const a: u32 align(4) = 3;
@@ -20,6 +21,7 @@ test "array to slice" {
 }
 
 test "arrays" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     var array: [5]u32 = undefined;
@@ -46,6 +48,7 @@ fn getArrayLen(a: []const u32) usize {
 }
 
 test "array init with mult" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64 or builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const a = 'a';
@@ -57,6 +60,7 @@ test "array init with mult" {
 }
 
 test "array literal with explicit type" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64 or builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const hex_mult: [4]u16 = .{ 4096, 256, 16, 1 };
@@ -86,6 +90,7 @@ const ArrayDotLenConstExpr = struct {
 const some_array = [_]u8{ 0, 1, 2, 3 };
 
 test "array literal with specified size" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64 or builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     var array = [2]u8{ 1, 2 };
@@ -94,6 +99,7 @@ test "array literal with specified size" {
 }
 
 test "array len field" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64 or builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     var arr = [4]u8{ 0, 0, 0, 0 };
@@ -105,6 +111,7 @@ test "array len field" {
 }
 
 test "array with sentinels" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64 or builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const S = struct {
@@ -134,6 +141,7 @@ test "array with sentinels" {
 }
 
 test "void arrays" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64 or builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     var array: [4]void = undefined;
@@ -144,6 +152,7 @@ test "void arrays" {
 }
 
 test "nested arrays" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64 or builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const array_of_strings = [_][]const u8{ "hello", "this", "is", "my", "thing" };
@@ -157,6 +166,7 @@ test "nested arrays" {
 }
 
 test "implicit comptime in array type size" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     var arr: [plusOne(10)]bool = undefined;
@@ -168,6 +178,7 @@ fn plusOne(x: u32) u32 {
 }
 
 test "single-item pointer to array indexing and slicing" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64 or builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     try testSingleItemPtrArrayIndexSlice();
@@ -193,6 +204,7 @@ fn doSomeMangling(array: *[4]u8) void {
 }
 
 test "implicit cast zero sized array ptr to slice" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64 or builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     {
@@ -208,6 +220,7 @@ test "implicit cast zero sized array ptr to slice" {
 }
 
 test "anonymous list literal syntax" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64 or builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const S = struct {
@@ -227,6 +240,7 @@ var s_array: [8]Sub = undefined;
 const Sub = struct { b: u8 };
 const Str = struct { a: []Sub };
 test "set global var array via slice embedded in struct" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     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_arm) return error.SkipZigTest; // TODO
@@ -243,6 +257,7 @@ test "set global var array via slice embedded in struct" {
 }
 
 test "read/write through global variable array of struct fields initialized via array mult" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     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_arm) return error.SkipZigTest; // TODO
@@ -264,6 +279,7 @@ test "read/write through global variable array of struct fields initialized via
 }
 
 test "implicit cast single-item pointer" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     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_arm) return error.SkipZigTest; // TODO
@@ -284,6 +300,7 @@ fn testArrayByValAtComptime(b: [2]u8) u8 {
 }
 
 test "comptime evaluating function that takes array by value" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     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_arm) return error.SkipZigTest; // TODO
@@ -296,6 +313,7 @@ test "comptime evaluating function that takes array by value" {
 }
 
 test "runtime initialize array elem and then implicit cast to slice" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     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_arm) return error.SkipZigTest; // TODO
@@ -306,6 +324,7 @@ test "runtime initialize array elem and then implicit cast to slice" {
 }
 
 test "array literal as argument to function" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     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_arm) return error.SkipZigTest; // TODO
@@ -334,6 +353,7 @@ test "array literal as argument to function" {
 }
 
 test "double nested array to const slice cast in array literal" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     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_arm) return error.SkipZigTest; // TODO
@@ -395,6 +415,7 @@ test "double nested array to const slice cast in array literal" {
 }
 
 test "anonymous literal in array" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     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_arm) return error.SkipZigTest; // TODO
@@ -420,6 +441,7 @@ test "anonymous literal in array" {
 }
 
 test "access the null element of a null terminated array" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     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_arm) return error.SkipZigTest; // TODO
@@ -437,6 +459,7 @@ test "access the null element of a null terminated array" {
 }
 
 test "type deduction for array subscript expression" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     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_arm) return error.SkipZigTest; // TODO
@@ -455,6 +478,7 @@ test "type deduction for array subscript expression" {
 }
 
 test "sentinel element count towards the ABI size calculation" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_llvm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
@@ -481,6 +505,7 @@ test "sentinel element count towards the ABI size calculation" {
 }
 
 test "zero-sized array with recursive type definition" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_llvm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
@@ -505,6 +530,7 @@ test "zero-sized array with recursive type definition" {
 }
 
 test "type coercion of anon struct literal to array" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     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_arm) return error.SkipZigTest; // TODO
@@ -540,6 +566,7 @@ test "type coercion of anon struct literal to array" {
 }
 
 test "type coercion of pointer to anon struct literal to pointer to array" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_llvm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
diff --git a/test/behavior/basic.zig b/test/behavior/basic.zig
index 18a24f9b3a..0c2c293d23 100644
--- a/test/behavior/basic.zig
+++ b/test/behavior/basic.zig
@@ -15,6 +15,7 @@ test "empty function with comments" {
 }
 
 test "truncate" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     try expect(testTruncate(0x10fd) == 0xfd);
@@ -25,6 +26,7 @@ fn testTruncate(x: u32) u8 {
 }
 
 test "truncate to non-power-of-two integers" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     try testTrunc(u32, u1, 0b10101, 0b1);
@@ -46,6 +48,7 @@ const g1: i32 = 1233 + 1;
 var g2: i32 = 0;
 
 test "global variables" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     try expect(g2 == 0);
     g2 = g1;
     try expect(g2 == 1234);
@@ -112,6 +115,7 @@ fn first4KeysOfHomeRow() []const u8 {
 }
 
 test "return string from function" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
 
@@ -119,12 +123,14 @@ test "return string from function" {
 }
 
 test "hex escape" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     try expect(mem.eql(u8, "\x68\x65\x6c\x6c\x6f", "hello"));
 }
 
 test "multiline string" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const s1 =
@@ -137,6 +143,7 @@ test "multiline string" {
 }
 
 test "multiline string comments at start" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const s1 =
@@ -149,6 +156,7 @@ test "multiline string comments at start" {
 }
 
 test "multiline string comments at end" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const s1 =
@@ -161,6 +169,7 @@ test "multiline string comments at end" {
 }
 
 test "multiline string comments in middle" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const s1 =
@@ -173,6 +182,7 @@ test "multiline string comments in middle" {
 }
 
 test "multiline string comments at multiple places" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const s1 =
@@ -191,6 +201,7 @@ test "string concatenation" {
 }
 
 test "array mult operator" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     try expect(mem.eql(u8, "ab" ** 5, "ababababab"));
@@ -216,6 +227,7 @@ test "compile time global reinterpret" {
 }
 
 test "cast undefined" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
 
     const array: [100]u8 = undefined;
@@ -227,6 +239,7 @@ fn testCastUndefined(x: []const u8) void {
 }
 
 test "implicit cast after unreachable" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     try expect(outer() == 1234);
@@ -284,6 +297,7 @@ fn fB() []const u8 {
 }
 
 test "call function pointer in struct" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
 
@@ -310,6 +324,7 @@ const FnPtrWrapper = struct {
 };
 
 test "const ptr from var variable" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     var x: u64 = undefined;
@@ -326,6 +341,7 @@ fn copy(src: *const u64, dst: *u64) void {
 }
 
 test "call result of if else expression" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
@@ -339,6 +355,7 @@ fn f2(x: bool) []const u8 {
 }
 
 test "memcpy and memset intrinsics" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
@@ -361,6 +378,7 @@ fn testMemcpyMemset() !void {
 }
 
 test "variable is allowed to be a pointer to an opaque type" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
@@ -374,6 +392,7 @@ fn hereIsAnOpaqueType(ptr: *OpaqueA) *OpaqueA {
 }
 
 test "take address of parameter" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
 
@@ -400,6 +419,7 @@ fn testPointerToVoidReturnType2() *const void {
 }
 
 test "array 2D const double ptr" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
 
@@ -419,6 +439,7 @@ fn testArray2DConstDoublePtr(ptr: *const f32) !void {
 }
 
 test "double implicit cast in same expression" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
 
@@ -430,6 +451,7 @@ fn nine() u8 {
 }
 
 test "struct inside function" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     try testStructInFn();
@@ -451,6 +473,7 @@ fn testStructInFn() !void {
 }
 
 test "fn call returning scalar optional in equality expression" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     try expect(getNull() == null);
 }
 
@@ -459,6 +482,7 @@ fn getNull() ?*i32 {
 }
 
 test "global variable assignment with optional unwrapping with var initialized to undefined" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const S = struct {
@@ -476,6 +500,7 @@ test "global variable assignment with optional unwrapping with var initialized t
 var global_foo: *i32 = undefined;
 
 test "peer result location with typed parent, runtime condition, comptime prongs" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
 
@@ -550,6 +575,7 @@ test "comptime cast fn to ptr" {
 }
 
 test "equality compare fn ptrs" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage1) return error.SkipZigTest;
 
     var a = &emptyFn;
@@ -557,6 +583,7 @@ test "equality compare fn ptrs" {
 }
 
 test "self reference through fn ptr field" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage1) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
 
@@ -576,6 +603,7 @@ test "self reference through fn ptr field" {
 }
 
 test "global variable initialized to global variable array element" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
 
@@ -593,6 +621,7 @@ var gdt = [_]GDTEntry{
 var global_ptr = &gdt[0];
 
 test "global constant is loaded with a runtime-known index" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const S = struct {
@@ -610,6 +639,7 @@ test "global constant is loaded with a runtime-known index" {
 }
 
 test "multiline string literal is null terminated" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
 
@@ -643,6 +673,7 @@ test "explicit cast optional pointers" {
 }
 
 test "pointer comparison" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
 
@@ -655,6 +686,7 @@ fn ptrEql(a: *const []const u8, b: *const []const u8) bool {
 }
 
 test "string concatenation" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
 
diff --git a/test/behavior/bit_shifting.zig b/test/behavior/bit_shifting.zig
index c0b2729bdf..1a01cbd732 100644
--- a/test/behavior/bit_shifting.zig
+++ b/test/behavior/bit_shifting.zig
@@ -61,6 +61,7 @@ fn ShardedTable(comptime Key: type, comptime mask_bit_count: comptime_int, compt
 }
 
 test "sharded table" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
diff --git a/test/behavior/bugs/1381.zig b/test/behavior/bugs/1381.zig
index 91a253af24..2f05d2fa96 100644
--- a/test/behavior/bugs/1381.zig
+++ b/test/behavior/bugs/1381.zig
@@ -12,6 +12,7 @@ const A = union(enum) {
 };
 
 test "union that needs padding bytes inside an array" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
     var as = [_]A{
diff --git a/test/behavior/bugs/1486.zig b/test/behavior/bugs/1486.zig
index 8f954a3600..91d5b621d2 100644
--- a/test/behavior/bugs/1486.zig
+++ b/test/behavior/bugs/1486.zig
@@ -1,10 +1,12 @@
 const std = @import("std");
 const expect = std.testing.expect;
+const builtin = @import("builtin");
 
 const ptr = &global;
 var global: usize = 123;
 
 test "constant pointer to global variable causes runtime load" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     global = 1234;
     try expect(&global == ptr);
     try expect(ptr.* == 1234);
diff --git a/test/behavior/bugs/1735.zig b/test/behavior/bugs/1735.zig
index c07bd9472b..556b899de1 100644
--- a/test/behavior/bugs/1735.zig
+++ b/test/behavior/bugs/1735.zig
@@ -42,6 +42,7 @@ const a = struct {
 };
 
 test "initialization" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
diff --git a/test/behavior/bugs/1741.zig b/test/behavior/bugs/1741.zig
index 280aafc52e..f4cc2101c4 100644
--- a/test/behavior/bugs/1741.zig
+++ b/test/behavior/bugs/1741.zig
@@ -2,6 +2,7 @@ const std = @import("std");
 const builtin = @import("builtin");
 
 test "fixed" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     const x: f32 align(128) = 12.34;
diff --git a/test/behavior/bugs/2006.zig b/test/behavior/bugs/2006.zig
index 4d76230c88..fcacb9a2c6 100644
--- a/test/behavior/bugs/2006.zig
+++ b/test/behavior/bugs/2006.zig
@@ -6,6 +6,7 @@ const S = struct {
     p: *S,
 };
 test "bug 2006" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     var a: S = undefined;
     a = S{ .p = undefined };
diff --git a/test/behavior/bugs/2578.zig b/test/behavior/bugs/2578.zig
index 15f5bf0e53..90db296158 100644
--- a/test/behavior/bugs/2578.zig
+++ b/test/behavior/bugs/2578.zig
@@ -12,6 +12,7 @@ fn bar(pointer: ?*anyopaque) void {
 }
 
 test "fixed" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
diff --git a/test/behavior/bugs/3007.zig b/test/behavior/bugs/3007.zig
index 0b3cbdc56d..c93bbf8d20 100644
--- a/test/behavior/bugs/3007.zig
+++ b/test/behavior/bugs/3007.zig
@@ -19,6 +19,7 @@ fn get_foo() Foo.FooError!*Foo {
 }
 
 test "fixed" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
diff --git a/test/behavior/bugs/3112.zig b/test/behavior/bugs/3112.zig
index 089f3e59f6..ebd8fd1ef3 100644
--- a/test/behavior/bugs/3112.zig
+++ b/test/behavior/bugs/3112.zig
@@ -12,6 +12,7 @@ fn prev(p: ?State) void {
 }
 
 test "zig test crash" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage1) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
diff --git a/test/behavior/bugs/3367.zig b/test/behavior/bugs/3367.zig
index f540fdf6df..6468498ab6 100644
--- a/test/behavior/bugs/3367.zig
+++ b/test/behavior/bugs/3367.zig
@@ -10,6 +10,7 @@ const Mixin = struct {
 };
 
 test "container member access usingnamespace decls" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     var foo = Foo{};
diff --git a/test/behavior/bugs/394.zig b/test/behavior/bugs/394.zig
index ec1bd5cc9f..28934c8dd0 100644
--- a/test/behavior/bugs/394.zig
+++ b/test/behavior/bugs/394.zig
@@ -11,6 +11,7 @@ const expect = @import("std").testing.expect;
 const builtin = @import("builtin");
 
 test "bug 394 fixed" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
     const x = S{
diff --git a/test/behavior/bugs/656.zig b/test/behavior/bugs/656.zig
index bd93c2b88c..d71dc426f9 100644
--- a/test/behavior/bugs/656.zig
+++ b/test/behavior/bugs/656.zig
@@ -11,6 +11,7 @@ const Value = struct {
 };
 
 test "optional if after an if in a switch prong of a switch with 2 prongs in an else" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
     try foo(false, true);
diff --git a/test/behavior/bugs/7250.zig b/test/behavior/bugs/7250.zig
index 27810acea4..ee04847e51 100644
--- a/test/behavior/bugs/7250.zig
+++ b/test/behavior/bugs/7250.zig
@@ -14,6 +14,7 @@ threadlocal var g_uart0 = nrfx_uart_t{
 };
 
 test "reference a global threadlocal variable" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
diff --git a/test/behavior/cast.zig b/test/behavior/cast.zig
index 4028d8c5f1..85e3368441 100644
--- a/test/behavior/cast.zig
+++ b/test/behavior/cast.zig
@@ -18,6 +18,7 @@ test "integer literal to pointer cast" {
 }
 
 test "peer type resolution: ?T and T" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64 or builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     try expect(peerTypeTAndOptionalT(true, false).? == 0);
@@ -94,6 +95,7 @@ test "comptime_int @intToFloat" {
 }
 
 test "@floatToInt" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
 
@@ -116,6 +118,7 @@ fn expectFloatToInt(comptime F: type, f: F, comptime I: type, i: I) !void {
 }
 
 test "implicitly cast indirect pointer to maybe-indirect pointer" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64 or builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const S = struct {
@@ -174,6 +177,7 @@ test "@floatCast comptime_int and comptime_float" {
 }
 
 test "coerce undefined to optional" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64 or builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     try expect(MakeType(void).getNull() == null);
@@ -193,6 +197,7 @@ fn MakeType(comptime T: type) type {
 }
 
 test "implicit cast from *[N]T to [*c]T" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64 or builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     var x: [4]u16 = [4]u16{ 0, 1, 2, 3 };
@@ -205,6 +210,7 @@ test "implicit cast from *[N]T to [*c]T" {
 }
 
 test "*usize to *void" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     var i = @as(usize, 0);
     var v = @ptrCast(*void, &i);
     v.* = {};
@@ -230,6 +236,7 @@ test "@intCast to u0 and use the result" {
 }
 
 test "peer result null and comptime_int" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64 or builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const S = struct {
@@ -253,6 +260,7 @@ test "peer result null and comptime_int" {
 }
 
 test "*const ?[*]const T to [*c]const [*c]const T" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64 or builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     var array = [_]u8{ 'o', 'k' };
@@ -264,6 +272,7 @@ test "*const ?[*]const T to [*c]const [*c]const T" {
 }
 
 test "array coersion to undefined at runtime" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64 or builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     @setRuntimeSafety(true);
@@ -293,6 +302,7 @@ fn implicitIntLitToOptional() void {
 }
 
 test "return u8 coercing into ?u32 return type" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64 or builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const S = struct {
@@ -313,6 +323,7 @@ test "cast from ?[*]T to ??[*]T" {
 }
 
 test "peer type unsigned int to signed" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
 
@@ -325,6 +336,7 @@ test "peer type unsigned int to signed" {
 }
 
 test "expected [*c]const u8, found [*:0]const u8" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
 
@@ -384,6 +396,7 @@ fn castToOptionalTypeError(z: i32) !void {
 }
 
 test "implicitly cast from [0]T to anyerror![]T" {
+    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_x86_64) return error.SkipZigTest; // TODO
@@ -455,6 +468,7 @@ fn testCastConstArrayRefToConstSlice() !void {
 }
 
 test "peer type resolution: error and [N]T" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
 
@@ -689,6 +703,7 @@ test "type coercion related to sentinel-termination" {
 }
 
 test "peer type resolution implicit cast to return type" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
@@ -710,6 +725,7 @@ test "peer type resolution implicit cast to return type" {
 }
 
 test "peer type resolution implicit cast to variable type" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
@@ -806,6 +822,7 @@ test "comptime float casts" {
 }
 
 test "pointer reinterpret const float to int" {
+    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_x86_64) return error.SkipZigTest; // TODO
@@ -822,6 +839,7 @@ test "pointer reinterpret const float to int" {
 }
 
 test "implicit cast from [*]T to ?*anyopaque" {
+    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_x86_64) return error.SkipZigTest; // TODO
@@ -840,6 +858,7 @@ fn incrementVoidPtrArray(array: ?*anyopaque, len: usize) void {
 }
 
 test "compile time int to ptr of function" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage1) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_llvm and builtin.cpu.arch == .aarch64) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
@@ -857,6 +876,7 @@ fn foobar(func: PFN_void) !void {
 }
 
 test "implicit ptr to *anyopaque" {
+    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_x86_64) return error.SkipZigTest; // TODO
@@ -871,6 +891,7 @@ test "implicit ptr to *anyopaque" {
 }
 
 test "return null from fn() anyerror!?&T" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
 
@@ -887,6 +908,7 @@ fn returnNullLitFromOptionalTypeErrorRef() anyerror!?*A {
 }
 
 test "peer type resolution: [0]u8 and []const u8" {
+    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_x86_64) return error.SkipZigTest; // TODO
@@ -907,6 +929,7 @@ fn peerTypeEmptyArrayAndSlice(a: bool, slice: []const u8) []const u8 {
 }
 
 test "implicitly cast from [N]T to ?[]const T" {
+    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_x86_64) return error.SkipZigTest; // TODO
@@ -920,6 +943,7 @@ fn castToOptionalSlice() ?[]const u8 {
 }
 
 test "cast u128 to f128 and back" {
+    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_x86_64) return error.SkipZigTest; // TODO
@@ -941,6 +965,7 @@ fn cast128Float(x: u128) f128 {
 }
 
 test "implicit cast from *[N]T to ?[*]T" {
+    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_x86_64) return error.SkipZigTest; // TODO
@@ -956,6 +981,7 @@ test "implicit cast from *[N]T to ?[*]T" {
 }
 
 test "implicit cast from *T to ?*anyopaque" {
+    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_x86_64) return error.SkipZigTest; // TODO
@@ -970,6 +996,7 @@ fn incrementVoidPtrValue(value: ?*anyopaque) void {
 }
 
 test "implicit cast *[0]T to E![]const u8" {
+    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_x86_64) return error.SkipZigTest; // TODO
@@ -987,6 +1014,7 @@ test "cast from array reference to fn: comptime fn ptr" {
     try expect(@ptrToInt(f) == @ptrToInt(&global_array));
 }
 test "cast from array reference to fn: runtime fn ptr" {
+    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_x86_64) return error.SkipZigTest; // TODO
@@ -996,6 +1024,7 @@ test "cast from array reference to fn: runtime fn ptr" {
 }
 
 test "*const [N]null u8 to ?[]const u8" {
+    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_x86_64) return error.SkipZigTest; // TODO
@@ -1034,6 +1063,7 @@ test "cast between [*c]T and ?[*:0]T on fn parameter" {
 
 var global_struct: struct { f0: usize } = undefined;
 test "assignment to optional pointer result loc" {
+    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_x86_64) return error.SkipZigTest; // TODO
@@ -1043,6 +1073,7 @@ test "assignment to optional pointer result loc" {
 }
 
 test "cast between *[N]void and []void" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
 
@@ -1052,6 +1083,7 @@ test "cast between *[N]void and []void" {
 }
 
 test "peer resolve arrays of different size to const slice" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
 
@@ -1065,6 +1097,7 @@ fn boolToStr(b: bool) []const u8 {
 }
 
 test "cast f16 to wider types" {
+    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_x86_64) return error.SkipZigTest; // TODO
@@ -1083,6 +1116,7 @@ test "cast f16 to wider types" {
 }
 
 test "cast f128 to narrower types" {
+    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_x86_64) return error.SkipZigTest; // TODO
@@ -1101,6 +1135,7 @@ test "cast f128 to narrower types" {
 }
 
 test "peer type resolution: unreachable, null, slice" {
+    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_x86_64) return error.SkipZigTest; // TODO
@@ -1119,6 +1154,7 @@ test "peer type resolution: unreachable, null, slice" {
 }
 
 test "cast i8 fn call peers to i32 result" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
 
diff --git a/test/behavior/fn_delegation.zig b/test/behavior/fn_delegation.zig
index 25ec3dea1b..eee8f52490 100644
--- a/test/behavior/fn_delegation.zig
+++ b/test/behavior/fn_delegation.zig
@@ -32,6 +32,7 @@ fn custom(comptime T: type, comptime num: u64) fn (T) u64 {
 }
 
 test "fn delegation" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
 
     const foo = Foo{};
diff --git a/test/behavior/ir_block_deps.zig b/test/behavior/ir_block_deps.zig
index cbc5cc2419..d7d50b4be1 100644
--- a/test/behavior/ir_block_deps.zig
+++ b/test/behavior/ir_block_deps.zig
@@ -18,6 +18,7 @@ fn getErrInt() anyerror!i32 {
 }
 
 test "ir block deps" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
 
diff --git a/test/behavior/optional.zig b/test/behavior/optional.zig
index 3caf777195..78788d6556 100644
--- a/test/behavior/optional.zig
+++ b/test/behavior/optional.zig
@@ -5,6 +5,7 @@ const expect = testing.expect;
 const expectEqual = testing.expectEqual;
 
 test "passing an optional integer as a parameter" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
 
@@ -25,6 +26,7 @@ test "passing an optional integer as a parameter" {
 pub const EmptyStruct = struct {};
 
 test "optional pointer to size zero struct" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
 
@@ -34,6 +36,7 @@ test "optional pointer to size zero struct" {
 }
 
 test "equality compare optional pointers" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
 
@@ -58,6 +61,7 @@ fn testNullPtrsEql() !void {
 }
 
 test "optional with void type" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
 
@@ -69,6 +73,7 @@ test "optional with void type" {
 }
 
 test "address of unwrap optional" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
 
@@ -89,6 +94,7 @@ test "address of unwrap optional" {
 }
 
 test "nested optional field in struct" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
 
@@ -105,6 +111,7 @@ test "nested optional field in struct" {
 }
 
 test "equality compare optional with non-optional" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
 
@@ -142,6 +149,7 @@ fn test_cmp_optional_non_optional() !void {
 }
 
 test "unwrap function call with optional pointer return value" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
 
@@ -163,6 +171,7 @@ test "unwrap function call with optional pointer return value" {
 }
 
 test "nested orelse" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
 
@@ -189,6 +198,7 @@ test "nested orelse" {
 }
 
 test "self-referential struct through a slice of optional" {
+    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_x86_64) return error.SkipZigTest; // TODO
diff --git a/test/behavior/reflection.zig b/test/behavior/reflection.zig
index 96c81fe0d0..a181e95b86 100644
--- a/test/behavior/reflection.zig
+++ b/test/behavior/reflection.zig
@@ -28,6 +28,7 @@ fn dummy(a: bool, b: i32, c: f32) i32 {
 }
 
 test "reflection: @field" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
 
diff --git a/test/behavior/slice.zig b/test/behavior/slice.zig
index badaf7ef03..4b73a3a140 100644
--- a/test/behavior/slice.zig
+++ b/test/behavior/slice.zig
@@ -27,6 +27,7 @@ comptime {
 }
 
 test "slicing" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
@@ -68,6 +69,7 @@ test "comptime slice of undefined pointer of length 0" {
 }
 
 test "implicitly cast array of size 0 to slice" {
+    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;
 
@@ -80,6 +82,7 @@ fn assertLenIsZero(msg: []const u8) !void {
 }
 
 test "access len index of sentinel-terminated slice" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
 
     const S = struct {
@@ -129,6 +132,7 @@ test "slice of type" {
 }
 
 test "generic malloc free" {
+    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;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
@@ -187,6 +191,7 @@ test "comptime pointer cast array and then slice" {
 }
 
 test "slicing zero length array" {
+    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;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
@@ -202,6 +207,7 @@ test "slicing zero length array" {
 const x = @intToPtr([*]i32, 0x1000)[0..0x500];
 const y = x[0x100..];
 test "compile time slice of pointer to hard coded address" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage1) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
@@ -215,6 +221,7 @@ test "compile time slice of pointer to hard coded address" {
 }
 
 test "slice string literal has correct type" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
 
@@ -230,6 +237,7 @@ test "slice string literal has correct type" {
 }
 
 test "result location zero sized array inside struct field implicit cast to slice" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
 
     const E = struct {
@@ -240,6 +248,7 @@ test "result location zero sized array inside struct field implicit cast to slic
 }
 
 test "runtime safety lets us slice from len..len" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
 
@@ -252,6 +261,7 @@ fn sliceFromLenToLen(a_slice: []u8, start: usize, end: usize) []u8 {
 }
 
 test "C pointer" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
 
@@ -262,6 +272,7 @@ test "C pointer" {
 }
 
 test "C pointer slice access" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
 
@@ -291,6 +302,7 @@ fn sliceSum(comptime q: []const u8) i32 {
 }
 
 test "slice type with custom alignment" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
 
@@ -305,6 +317,7 @@ test "slice type with custom alignment" {
 }
 
 test "obtaining a null terminated slice" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
@@ -350,6 +363,7 @@ test "empty array to slice" {
 }
 
 test "@ptrCast slice to pointer" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
 
diff --git a/test/behavior/struct.zig b/test/behavior/struct.zig
index ecdd6a1846..8428ea886f 100644
--- a/test/behavior/struct.zig
+++ b/test/behavior/struct.zig
@@ -9,6 +9,7 @@ const maxInt = std.math.maxInt;
 top_level_field: i32,
 
 test "top level fields" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     var instance = @This(){
@@ -42,6 +43,7 @@ const StructWithFields = struct {
 };
 
 test "non-packed struct has fields padded out to the required alignment" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const foo = StructWithFields{ .a = 5, .b = 1, .c = 10, .d = 2 };
@@ -65,6 +67,7 @@ const SmallStruct = struct {
 };
 
 test "lower unnamed constants" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     var foo = SmallStruct{ .a = 1, .b = 255 };
     try expect(foo.first() == 1);
     try expect(foo.second() == 255);
@@ -83,6 +86,7 @@ const StructFoo = struct {
 };
 
 test "structs" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64 or builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     var foo: StructFoo = undefined;
@@ -101,6 +105,7 @@ fn testMutation(foo: *StructFoo) void {
 }
 
 test "struct byval assign" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     var foo1: StructFoo = undefined;
@@ -134,6 +139,7 @@ fn returnEmptyStructInstance() StructWithNoFields {
 }
 
 test "fn call of struct field" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const Foo = struct {
@@ -165,12 +171,14 @@ const MemberFnTestFoo = struct {
 };
 
 test "call member function directly" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     const instance = MemberFnTestFoo{ .x = 1234 };
     const result = MemberFnTestFoo.member(instance);
     try expect(result == 1234);
 }
 
 test "store member function in variable" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     const instance = MemberFnTestFoo{ .x = 1234 };
     const memberFn = MemberFnTestFoo.member;
     const result = memberFn(instance);
@@ -178,6 +186,7 @@ test "store member function in variable" {
 }
 
 test "member functions" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     const r = MemberFnRand{ .seed = 1234 };
     try expect(r.getSeed() == 1234);
 }
@@ -189,6 +198,7 @@ const MemberFnRand = struct {
 };
 
 test "return struct byval from function" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const bar = makeBar2(1234, 5678);
@@ -206,6 +216,7 @@ fn makeBar2(x: i32, y: i32) Bar {
 }
 
 test "call method with mutable reference to struct with no fields" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const S = struct {
@@ -238,6 +249,7 @@ test "usingnamespace within struct scope" {
 }
 
 test "struct field init with catch" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64 or builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const S = struct {
@@ -296,6 +308,7 @@ const Val = struct {
 };
 
 test "struct point to self" {
+    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
@@ -314,6 +327,7 @@ test "struct point to self" {
 }
 
 test "void struct fields" {
+    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
@@ -334,6 +348,7 @@ const VoidStructFieldsFoo = struct {
 };
 
 test "return empty struct from fn" {
+    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
@@ -347,6 +362,7 @@ fn testReturnEmptyStructFromFn() EmptyStruct2 {
 }
 
 test "pass slice of empty struct to fn" {
+    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
@@ -359,6 +375,7 @@ fn testPassSliceOfEmptyStructToFn(slice: []const EmptyStruct2) usize {
 }
 
 test "self-referencing struct via array member" {
+    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
@@ -389,6 +406,7 @@ const EmptyStruct = struct {
 };
 
 test "align 1 field before self referential align 8 field as slice return type" {
+    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
@@ -413,6 +431,7 @@ const APackedStruct = packed struct {
 };
 
 test "packed struct" {
+    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
@@ -438,6 +457,7 @@ const Foo96Bits = packed struct {
 };
 
 test "packed struct 24bits" {
+    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
@@ -484,6 +504,7 @@ test "packed struct 24bits" {
 }
 
 test "runtime struct initialization of bitfield" {
+    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
@@ -523,6 +544,7 @@ const Bitfields = packed struct {
 };
 
 test "native bit field understands endianness" {
+    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
@@ -546,6 +568,7 @@ test "native bit field understands endianness" {
 }
 
 test "implicit cast packed struct field to const ptr" {
+    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
@@ -581,6 +604,7 @@ test "zero-bit field in packed struct" {
 }
 
 test "packed struct with non-ABI-aligned field" {
+    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
@@ -610,6 +634,7 @@ const bit_field_1 = BitField1{
 };
 
 test "bit field access" {
+    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
@@ -642,6 +667,7 @@ fn getC(data: *const BitField1) u2 {
 }
 
 test "default struct initialization fields" {
+    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
@@ -907,6 +933,7 @@ test "packed struct field passed to generic function" {
 }
 
 test "anonymous struct literal syntax" {
+    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
@@ -1100,6 +1127,7 @@ test "type coercion of pointer to anon struct literal to pointer to struct" {
 }
 
 test "packed struct with undefined initializers" {
+    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
diff --git a/test/behavior/truncate.zig b/test/behavior/truncate.zig
index 001ba538b2..7fe5b8ecb6 100644
--- a/test/behavior/truncate.zig
+++ b/test/behavior/truncate.zig
@@ -3,6 +3,7 @@ const builtin = @import("builtin");
 const expect = std.testing.expect;
 
 test "truncate u0 to larger integer allowed and has comptime known result" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     var x: u0 = 0;
@@ -11,6 +12,7 @@ test "truncate u0 to larger integer allowed and has comptime known result" {
 }
 
 test "truncate.u0.literal" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     var z = @truncate(u0, 0);
@@ -18,6 +20,7 @@ test "truncate.u0.literal" {
 }
 
 test "truncate.u0.const" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const c0: usize = 0;
@@ -26,6 +29,7 @@ test "truncate.u0.const" {
 }
 
 test "truncate.u0.var" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     var d: u8 = 2;
@@ -34,6 +38,7 @@ test "truncate.u0.var" {
 }
 
 test "truncate i0 to larger integer allowed and has comptime known result" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     var x: i0 = 0;
@@ -42,6 +47,7 @@ test "truncate i0 to larger integer allowed and has comptime known result" {
 }
 
 test "truncate.i0.literal" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     var z = @truncate(i0, 0);
@@ -49,6 +55,7 @@ test "truncate.i0.literal" {
 }
 
 test "truncate.i0.const" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     const c0: isize = 0;
@@ -57,6 +64,7 @@ test "truncate.i0.const" {
 }
 
 test "truncate.i0.var" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     var d: i8 = 2;
@@ -65,6 +73,7 @@ test "truncate.i0.var" {
 }
 
 test "truncate on comptime integer" {
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
 
     var x = @truncate(u16, 9999);
diff --git a/test/behavior/var_args.zig b/test/behavior/var_args.zig
index 63b8c35e1b..0e37c845b6 100644
--- a/test/behavior/var_args.zig
+++ b/test/behavior/var_args.zig
@@ -25,6 +25,7 @@ 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
@@ -84,6 +85,7 @@ 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
@@ -93,6 +95,7 @@ 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