authorgravatar for jacobly@ziglang.orgJacob Young <jacobly@ziglang.org> 2022-10-08 11:29:06-04:00
committergravatar for jacobly@ziglang.orgJacob Young <jacobly@ziglang.org> 2022-10-25 05:11:28-04:00
log962f33ee11676934eeece4595cdc372662986f6d
tree4171cf842088f08f54aa97815768a61b7c94592d
parent6a4266d62aacf887a81549d81ae6f312992d2b2c

cbe: implement airUnionInit

3 files changed, 33 insertions(+), 13 deletions(-)

src/codegen/c.zig+33-6
......@@ -4331,16 +4331,43 @@ fn airAggregateInit(f: *Function, inst: Air.Inst.Index) !CValue {
43314331fn airUnionInit(f: *Function, inst: Air.Inst.Index) !CValue {
43324332 if (f.liveness.isUnused(inst)) return CValue.none;
43334333
4334 const inst_ty = f.air.typeOfIndex(inst);
43354334 const ty_pl = f.air.instructions.items(.data)[inst].ty_pl;
4335 const extra = f.air.extraData(Air.UnionInit, ty_pl.payload).data;
4336 const union_ty = f.air.typeOfIndex(inst);
4337 const target = f.object.dg.module.getTarget();
4338 const layout = union_ty.unionGetLayout(target);
4339 const union_obj = union_ty.cast(Type.Payload.Union).?.data;
4340 const field_name = union_obj.fields.keys()[extra.field_index];
4341 const payload = try f.resolveInst(extra.init);
43364342
43374343 const writer = f.object.writer();
4338 const local = try f.allocLocal(inst_ty, .Const);
4339 try writer.writeAll(" = ");
4344 const local = try f.allocLocal(union_ty, .Const);
4345 try writer.writeAll(" = {");
4346 if (union_ty.unionTagTypeSafety()) |tag_ty| {
4347 if (layout.tag_size != 0) {
4348 const field_index = tag_ty.enumFieldIndex(field_name).?;
43404349
4341 _ = local;
4342 _ = ty_pl;
4343 return f.fail("TODO: C backend: implement airUnionInit", .{});
4350 var tag_val_pl: Value.Payload.U32 = .{
4351 .base = .{ .tag = .enum_field_index },
4352 .data = @intCast(u32, field_index),
4353 };
4354 const tag_val = Value.initPayload(&tag_val_pl.base);
4355
4356 var int_val_pl: Value.Payload.U64 = undefined;
4357 const int_val = tag_val.enumToInt(tag_ty, &int_val_pl);
4358
4359 try writer.print(".tag = {}, ", .{try f.fmtIntLiteral(tag_ty, int_val)});
4360 }
4361 try writer.writeAll(".payload = {");
4362 }
4363
4364 try writer.print(".{ } = ", .{fmtIdent(field_name)});
4365 try f.writeCValue(writer, payload);
4366
4367 if (union_ty.unionTagTypeSafety()) |_| try writer.writeByte('}');
4368 try writer.writeAll("};\n");
4369
4370 return local;
43444371}
43454372
43464373fn airPrefetch(f: *Function, inst: Air.Inst.Index) !CValue {
test/behavior/translate_c_macros.zig-1
......@@ -58,7 +58,6 @@ test "cast negative integer to pointer" {
5858test "casting to union with a macro" {
5959 if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
6060 if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
61 if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
6261 if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
6362 if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
6463
test/behavior/union.zig-6
......@@ -776,7 +776,6 @@ test "return union init with void payload" {
776776}
777777
778778test "@unionInit stored to a const" {
779 if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
780779 if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
781780 if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
782781 if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
......@@ -939,7 +938,6 @@ test "function call result coerces from tagged union to the tag" {
939938}
940939
941940test "cast from anonymous struct to union" {
942 if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
943941 if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
944942 if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
945943 if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
......@@ -972,7 +970,6 @@ test "cast from anonymous struct to union" {
972970}
973971
974972test "cast from pointer to anonymous struct to pointer to union" {
975 if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
976973 if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
977974 if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
978975 if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
......@@ -1135,7 +1132,6 @@ test "global variable struct contains union initialized to non-most-aligned fiel
11351132}
11361133
11371134test "union with no result loc initiated with a runtime value" {
1138 if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
11391135 if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
11401136 if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
11411137 if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
......@@ -1152,7 +1148,6 @@ test "union with no result loc initiated with a runtime value" {
11521148}
11531149
11541150test "union with a large struct field" {
1155 if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
11561151 if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
11571152 if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
11581153 if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
......@@ -1321,7 +1316,6 @@ test "union and enum field order doesn't match" {
13211316}
13221317
13231318test "@unionInit uses tag value instead of field index" {
1324 if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
13251319 if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
13261320 if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
13271321 if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO