std: Disable some bit set tests on aarch64_be.

llvm/llvm-project#129843

Author: alexrp

lib/std/bit_set.zig

@@ -1647,6 +1647,7 @@ fn testStaticBitSet(comptime Set: type) !void {
 
 test IntegerBitSet {
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_llvm and builtin.target.cpu.arch == .aarch64_be) return error.SkipZigTest; // https://github.com/llvm/llvm-project/issues/129843
 
     try testStaticBitSet(IntegerBitSet(0));
     try testStaticBitSet(IntegerBitSet(1));
@@ -1659,6 +1660,8 @@ test IntegerBitSet {
 }
 
 test ArrayBitSet {
+    if (builtin.zig_backend == .stage2_llvm and builtin.target.cpu.arch == .aarch64_be) return error.SkipZigTest; // https://github.com/llvm/llvm-project/issues/129843
+
     inline for (.{ 0, 1, 2, 31, 32, 33, 63, 64, 65, 254, 500, 3000 }) |size| {
         try testStaticBitSet(ArrayBitSet(u8, size));
         try testStaticBitSet(ArrayBitSet(u16, size));
@@ -1669,6 +1672,8 @@ test ArrayBitSet {
 }
 
 test DynamicBitSetUnmanaged {
+    if (builtin.zig_backend == .stage2_llvm and builtin.target.cpu.arch == .aarch64_be) return error.SkipZigTest; // https://github.com/llvm/llvm-project/issues/129843
+
     const allocator = std.testing.allocator;
     var a = try DynamicBitSetUnmanaged.initEmpty(allocator, 300);
     try testing.expectEqual(@as(usize, 0), a.count());
@@ -1722,6 +1727,8 @@ test DynamicBitSetUnmanaged {
 }
 
 test DynamicBitSet {
+    if (builtin.zig_backend == .stage2_llvm and builtin.target.cpu.arch == .aarch64_be) return error.SkipZigTest; // https://github.com/llvm/llvm-project/issues/129843
+
     const allocator = std.testing.allocator;
     var a = try DynamicBitSet.initEmpty(allocator, 300);
     try testing.expectEqual(@as(usize, 0), a.count());