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wasm: Add stage2 tests for error unions

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This commit is contained in:
Luuk de Gram
2021-05-28 11:52:08 +02:00
parent 8a81dfc999
commit 5cbe930e36
2 changed files with 68 additions and 2 deletions
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6
src/codegen/wasm.zig
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@@ -692,13 +692,15 @@ pub const Context = struct {
.Struct => return self.fail(.{ .node_offset = 0 }, "TODO: Implement struct as return type for wasm", .{}),
.Optional => return self.fail(.{ .node_offset = 0 }, "TODO: Implement optionals as return type for wasm", .{}),
.ErrorUnion => {
try leb.writeULEB128(writer, @as(u32, 2));
const val_type = try self.genValtype(
.{ .node_offset = 0 },
return_type.errorUnionChild(),
);
try writer.writeByte(val_type);
// write down the amount of return values
try leb.writeULEB128(writer, @as(u32, 2));
try writer.writeByte(wasm.valtype(.i32)); // error code is always an i32 integer.
try writer.writeByte(val_type);
},
else => |ret_type| {
try leb.writeULEB128(writer, @as(u32, 1));