Commit 8d49b2ef4e

@@ -1681,6 +1681,8 @@ pub const DeclGen = struct {
             .int_from_float    => try self.airIntFromFloat(inst),
             .not             => try self.airNot(inst),
 
+            .array_to_slice => try self.airArrayToSlice(inst),
+
             .slice_ptr      => try self.airSliceField(inst, 0),
             .slice_len      => try self.airSliceField(inst, 1),
             .slice_elem_ptr => try self.airSliceElemPtr(inst),
@@ -2427,6 +2429,30 @@ pub const DeclGen = struct {
         return result_id;
     }
 
+    fn airArrayToSlice(self: *DeclGen, inst: Air.Inst.Index) !?IdRef {
+        const mod = self.module;
+        const ty_op = self.air.instructions.items(.data)[inst].ty_op;
+        const array_ptr_ty = self.typeOf(ty_op.operand);
+        const array_ty = array_ptr_ty.childType(mod);
+        const elem_ty = array_ptr_ty.elemType2(mod); // use elemType() so that we get T for *[N]T.
+        const elem_ty_ref = try self.resolveType(elem_ty, .indirect);
+        const elem_ptr_ty_ref = try self.spv.ptrType(elem_ty_ref, spvStorageClass(array_ptr_ty.ptrAddressSpace(mod)));
+        const slice_ty = self.typeOfIndex(inst);
+        const slice_ty_ref = try self.resolveType(slice_ty, .direct);
+        const size_ty_ref = try self.sizeType();
+
+        const array_ptr_id = try self.resolve(ty_op.operand);
+        const len_id = try self.constInt(size_ty_ref, array_ty.arrayLen(mod));
+
+        if (!array_ty.hasRuntimeBitsIgnoreComptime(mod)) {
+            unreachable; // TODO
+        }
+
+        // Convert the pointer-to-array to a pointer to the first element.
+        const elem_ptr_id = try self.accessChain(elem_ptr_ty_ref, array_ptr_id, &.{0});
+        return try self.constructStruct(slice_ty_ref, &.{ elem_ptr_id, len_id });
+    }
+
     fn airSliceField(self: *DeclGen, inst: Air.Inst.Index, field: u32) !?IdRef {
         if (self.liveness.isUnused(inst)) return null;
         const ty_op = self.air.instructions.items(.data)[inst].ty_op;

@@ -29,7 +29,6 @@ comptime {
 
 test "slicing" {
     if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
-    if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
 
     var array: [20]i32 = undefined;
 
@@ -346,7 +345,6 @@ test "empty array to slice" {
 test "@ptrCast slice to pointer" {
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
-    if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
 
     const S = struct {
         fn doTheTest() !void {
@@ -572,7 +570,6 @@ test "slice syntax resulting in pointer-to-array" {
 test "slice pointer-to-array null terminated" {
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
-    if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
 
     comptime {
         var array = [5:0]u8{ 1, 2, 3, 4, 5 };
@@ -714,7 +711,6 @@ test "slice sentinel access at comptime" {
 test "slicing array with sentinel as end index" {
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
-    if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
 
     const S = struct {
         fn do() !void {
@@ -733,7 +729,6 @@ test "slicing array with sentinel as end index" {
 test "slicing slice with sentinel as end index" {
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
-    if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
 
     const S = struct {
         fn do() !void {
@@ -762,7 +757,6 @@ test "slice len modification at comptime" {
 }
 
 test "slice field ptr const" {
-    if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
 
     const const_slice: []const u8 = "string";
 
@@ -777,7 +771,6 @@ test "slice field ptr const" {
 
 test "slice field ptr var" {
     if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
-    if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
 
     var var_slice: []const u8 = "string";