zig

commit a75300c8d8cfe21647db1d50f77a9a1ee8d62a0e (tree)
parent 8895025688b599a7082669234d40b26001bd9ed0
Author: Robin Voetter <robin@voetter.nl>
Date:   Tue, 19 Sep 2023 23:32:49 +0200

spirv: air slice

Diffstat:
M
src/codegen/spirv.zig
 | 
17
+++++++++++++++++

1 file changed, 17 insertions(+), 0 deletions(-)
diff --git a/src/codegen/spirv.zig b/src/codegen/spirv.zig
@@ -1683,6 +1683,7 @@ pub const DeclGen = struct {
             .not             => try self.airNot(inst),
 
             .array_to_slice => try self.airArrayToSlice(inst),
+            .slice          => try self.airSlice(inst),
             .aggregate_init => try self.airAggregateInit(inst),
 
             .slice_ptr      => try self.airSliceField(inst, 0),
@@ -2462,6 +2463,22 @@ pub const DeclGen = struct {
         return try self.constructStruct(slice_ty_ref, &.{ elem_ptr_id, len_id });
     }
 
+    fn airSlice(self: *DeclGen, inst: Air.Inst.Index) !?IdRef {
+        if (self.liveness.isUnused(inst)) return null;
+
+        const ty_pl = self.air.instructions.items(.data)[inst].ty_pl;
+        const bin_op = self.air.extraData(Air.Bin, ty_pl.payload).data;
+        const ptr_id = try self.resolve(bin_op.lhs);
+        const len_id = try self.resolve(bin_op.rhs);
+        const slice_ty = self.typeOfIndex(inst);
+        const slice_ty_ref = try self.resolveType(slice_ty, .direct);
+
+        return try self.constructStruct(slice_ty_ref, &.{
+            ptr_id, // Note: Type should not need to be converted to direct.
+            len_id, // Note: Type should not need to be converted to direct.
+        });
+    }
+
     fn airAggregateInit(self: *DeclGen, inst: Air.Inst.Index) !?IdRef {
         if (self.liveness.isUnused(inst)) return null;