diff --git a/test/cases/compile_errors/extern_spirv_decoration_validation.zig b/test/cases/compile_errors/extern_spirv_decoration_validation.zig
index ae64963849857b2ba6b95f45b33c179b6700870b..a7cdd98b58e6195fe62281c9ed025659bc9c6a57 100644
--- a/test/cases/compile_errors/extern_spirv_decoration_validation.zig
+++ b/test/cases/compile_errors/extern_spirv_decoration_validation.zig
@@ -10,4 +10,4 @@ comptime {
 // backend=selfhosted
 // target=spirv32-vulkan
 //
-// :1:45: error: "flat" decoration requires "input" or "output" address space
+// :1:52: error: "flat" decoration requires "input" or "output" address space
diff --git a/test/cases/compile_errors/loading_spirv_runtime_array_value.zig b/test/cases/compile_errors/loading_spirv_runtime_array_value.zig
index 39cd38b36f0e3bce36884911de9b9e2f4f03c55f..19bdcefc4f208f262693c3503e5024e837f82592 100644
--- a/test/cases/compile_errors/loading_spirv_runtime_array_value.zig
+++ b/test/cases/compile_errors/loading_spirv_runtime_array_value.zig
@@ -19,5 +19,5 @@ export fn main2() callconv(.kernel) void {
 // backend=selfhosted
 // target=spirv32-vulkan
 //
-// :10:15: error: cannot load SPIR-V runtime array value
-// :15:12: error: cannot load SPIR-V runtime array value
+// :10:18: error: cannot load SPIR-V runtime array value
+// :15:10: error: cannot load SPIR-V runtime array value
diff --git a/test/cases/compile_errors/spirv_merge_logical_pointers.zig b/test/cases/compile_errors/spirv_merge_logical_pointers.zig
index ccceef8097c8418dcfc363f6baa87c0e04073b3c..640129575d3103ae9c8ac2b5bd636e7a9a1021ab 100644
--- a/test/cases/compile_errors/spirv_merge_logical_pointers.zig
+++ b/test/cases/compile_errors/spirv_merge_logical_pointers.zig
@@ -11,6 +11,7 @@ export fn a() void {
 }
 
 // error
+// backend=selfhosted
 // target=spirv32-vulkan
 //
 // :9:13: error: value with non-mergable pointer type '*i32' depends on runtime control flow
diff --git a/test/cases/compile_errors/spirv_slices.zig b/test/cases/compile_errors/spirv_slices.zig
index 8e6e657025982ad316bc058025e1374e30520aec..73554699caf09fb3a1c7cf86fa3a19863ddd767e 100644
--- a/test/cases/compile_errors/spirv_slices.zig
+++ b/test/cases/compile_errors/spirv_slices.zig
@@ -1,6 +1,6 @@
 export fn a() void {
-    var buf: [3]f32 = undefined;
-    takesSlice(&buf); // error
+    var x: [3]f32 = .{ 1, 2, 3 };
+    takesSlice(&x);
 }
 
 fn takesSlice(buf: []f32) void {
@@ -8,34 +8,18 @@ fn takesSlice(buf: []f32) void {
 }
 
 export fn b() void {
-    var buf: [3]f32 = undefined;
-    for (buf[0..3]) |_| {} // error
-}
-
-export fn c() void {
-    var buf: [3]f32 = undefined;
-    for (&buf) |_| {} // not an error
-}
-
-export fn d() void {
-    const buf: [3]f32 = .{1, 2, 3};
-    for (comptime buf[0..3]) |_| {} // not an error
-}
-
-export fn e() void {
-    const buf: [3]f32 = .{1, 2, 3};
-    for (comptime buf[0..3]) |_| {} // not an error
-    for (buf[0..3]) |_| {} // error
+    const x: [3]f32 = .{ 1, 2, 3 };
+    for (comptime x[0..3]) |_| {}
+    for (&x) |_| {}
+    for (x[0..3]) |_| {}
 }
 
 // error
-// backend=auto
+// backend=selfhosted
 // target=spirv32-opengl,spirv32-vulkan
 // cpu_features=baseline+variable_pointers
 //
 // :3:16: error: cannot construct slice from address space 'generic'
 // :3:16: note: only 'shared' and 'storage_buffer' address spaces support slicing on SPIR-V
-// :12:13: error: cannot construct slice from address space 'generic'
-// :12:13: note: only 'shared' and 'storage_buffer' address spaces support slicing on SPIR-V
-// :28:13: error: cannot construct slice from address space 'generic'
-// :28:13: note: only 'shared' and 'storage_buffer' address spaces support slicing on SPIR-V
+// :14:11: error: cannot construct slice from address space 'generic'
+// :14:11: note: only 'shared' and 'storage_buffer' address spaces support slicing on SPIR-V
diff --git a/test/cases/compile_errors/spirv_unsupported_float_width.zig b/test/cases/compile_errors/spirv_unsupported_float_width.zig
deleted file mode 100644
index 364e9f8385f607af4f766bdd742c261a782635a8..0000000000000000000000000000000000000000
--- a/test/cases/compile_errors/spirv_unsupported_float_width.zig
+++ /dev/null
@@ -1,16 +0,0 @@
-export fn use_f80() callconv(.kernel) void {
-    var x: f80 = 1.5;
-    _ = &x;
-}
-
-export fn use_f16() callconv(.kernel) void {
-    var x: f16 = 1.5;
-    _ = &x;
-}
-
-// error
-// backend=selfhosted
-// target=spirv32-vulkan
-//
-// :2:5: error: 'f80' is not supported on the current SPIR-V feature set
-// :7:5: error: 'f16' is not supported on the current SPIR-V feature set
diff --git a/test/src/Cases.zig b/test/src/Cases.zig
index f16a73121c6a885ce09a1d69a39f53d85b737863..26cb1ae14be419ca3d7347c773b2d1ec567a0331 100644
--- a/test/src/Cases.zig
+++ b/test/src/Cases.zig
@@ -389,11 +389,12 @@ fn addFromDirInner(
             const resolved_target = b.resolveTargetQuery(target_query);
             const target = &resolved_target.result;
             for (backends) |backend| {
-                if (backend == .selfhosted and
-                    target.cpu.arch != .aarch64 and target.cpu.arch != .wasm32 and target.cpu.arch != .x86_64 and target.cpu.arch != .spirv64)
-                {
-                    // Other backends don't support new liveness format
-                    continue;
+                if (backend == .selfhosted) {
+                    switch (target.cpu.arch) {
+                        .aarch64, .wasm32, .x86_64, .spirv64, .spirv32 => {},
+                        // Other backends don't support new liveness format
+                        else => continue,
+                    }
                 }
 
                 if (backend == .selfhosted and target.cpu.arch == .aarch64) {