emitSingleValue

fn emitSingleValue(c: *AsmCodeGen, qt: QualType, node: Node.Index) !void

File

Code

fn emitSingleValue(c: *AsmCodeGen, qt: QualType, node: Node.Index) !void {
    const value = c.tree.value_map.get(node) orelse return;
    const bit_size = qt.bitSizeof(c.comp);
    const scalar_kind = qt.scalarKind(c.comp);
    if (!scalar_kind.isReal()) {
        return c.todo("Codegen _Complex values", node.tok(c.tree));
    } else if (scalar_kind.isInt()) {
        const storage_unit = std.enums.fromInt(StorageUnit, bit_size) orelse return c.todo("Codegen _BitInt values", node.tok(c.tree));
        try c.data.print("  .{s} ", .{@tagName(storage_unit)});
        _ = try value.print(qt, c.comp, c.data);
        try c.data.writeByte('\n');
    } else if (scalar_kind.isFloat()) {
        switch (bit_size) {
            16 => return serializeFloat(f16, value.toFloat(f16, c.comp), c.data),
            32 => return serializeFloat(f32, value.toFloat(f32, c.comp), c.data),
            64 => return serializeFloat(f64, value.toFloat(f64, c.comp), c.data),
            80 => return serializeFloat(f80, value.toFloat(f80, c.comp), c.data),
            128 => return serializeFloat(f128, value.toFloat(f128, c.comp), c.data),
            else => unreachable,
        }
    } else if (scalar_kind.isPointer()) {
        return c.todo("Codegen pointer", node.tok(c.tree));
    } else if (qt.is(c.comp, .array)) {
        // Todo:
        //  Handle truncated initializers e.g. char x[3] = "hello";
        //  Zero out remaining bytes if initializer is shorter than storage capacity
        //  Handle non-char strings
        const bytes = value.toBytes(c.comp);
        const directive = if (bytes.len > bit_size / 8) "ascii" else "string";
        try c.data.print("  .{s} ", .{directive});
        try Value.printString(bytes, qt, c.comp, c.data);

        try c.data.writeByte('\n');
    } else unreachable;
}