diff options
Diffstat (limited to 'src/codegen/c.zig')
| -rw-r--r-- | src/codegen/c.zig | 40 |
1 files changed, 29 insertions, 11 deletions
diff --git a/src/codegen/c.zig b/src/codegen/c.zig index 519b2b45d5..0c85f0f923 100644 --- a/src/codegen/c.zig +++ b/src/codegen/c.zig @@ -6852,17 +6852,35 @@ fn airAggregateInit(f: *Function, inst: Air.Inst.Index) !CValue { switch (inst_ty.zigTypeTag()) { .Array, .Vector => { const elem_ty = inst_ty.childType(); - for (resolved_elements, 0..) |element, i| { - try f.writeCValue(writer, local, .Other); - try writer.print("[{d}] = ", .{i}); - try f.writeCValue(writer, element, .Other); - try writer.writeAll(";\n"); - } - if (inst_ty.sentinel()) |sentinel| { - try f.writeCValue(writer, local, .Other); - try writer.print("[{d}] = ", .{resolved_elements.len}); - try f.object.dg.renderValue(writer, elem_ty, sentinel, .Other); - try writer.writeAll(";\n"); + + const is_array = lowersToArray(elem_ty, target); + const need_memcpy = is_array; + if (need_memcpy) { + for (resolved_elements, 0..) |element, i| { + try writer.writeAll("memcpy("); + try f.writeCValue(writer, local, .Other); + try writer.print("[{d}]", .{i}); + try writer.writeAll(", "); + try f.writeCValue(writer, element, .Other); + try writer.writeAll(", sizeof("); + try f.renderType(writer, elem_ty); + try writer.writeAll("))"); + try writer.writeAll(";\n"); + } + assert(inst_ty.sentinel() == null); + } else { + for (resolved_elements, 0..) |element, i| { + try f.writeCValue(writer, local, .Other); + try writer.print("[{d}] = ", .{i}); + try f.writeCValue(writer, element, .Other); + try writer.writeAll(";\n"); + } + if (inst_ty.sentinel()) |sentinel| { + try f.writeCValue(writer, local, .Other); + try writer.print("[{d}] = ", .{resolved_elements.len}); + try f.object.dg.renderValue(writer, elem_ty, sentinel, .Other); + try writer.writeAll(";\n"); + } } }, .Struct => switch (inst_ty.containerLayout()) { |