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2961 lines (2575 loc) · 118 KB
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Copy pathprint_zir.zig
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2961 lines (2575 loc) · 118 KB
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const std = @import("std");
const mem = std.mem;
const Allocator = std.mem.Allocator;
const assert = std.debug.assert;
const Ast = std.zig.Ast;
const InternPool = @import("InternPool.zig");
const Zir = std.zig.Zir;
const Zcu = @import("Zcu.zig");
const LazySrcLoc = Zcu.LazySrcLoc;
/// Write human-readable, debug formatted ZIR code.
pub fn renderAsText(gpa: Allocator, tree: ?Ast, zir: Zir, bw: *std.Io.Writer) !void {
var arena = std.heap.ArenaAllocator.init(gpa);
defer arena.deinit();
var writer: Writer = .{
.gpa = gpa,
.arena = arena.allocator(),
.tree = tree,
.code = zir,
.indent = 0,
.parent_decl_node = .root,
.recurse_decls = true,
.recurse_blocks = true,
};
const main_struct_inst: Zir.Inst.Index = .main_struct_inst;
try bw.print("%{d} ", .{@intFromEnum(main_struct_inst)});
try writer.writeInstToStream(bw, main_struct_inst);
try bw.writeAll("\n");
const imports_index = zir.extra[@intFromEnum(Zir.ExtraIndex.imports)];
if (imports_index != 0) {
try bw.writeAll("Imports:\n");
const extra = zir.extraData(Zir.Inst.Imports, imports_index);
var extra_index = extra.end;
for (0..extra.data.imports_len) |_| {
const item = zir.extraData(Zir.Inst.Imports.Item, extra_index);
extra_index = item.end;
const import_path = zir.nullTerminatedString(item.data.name);
try bw.print(" @import(\"{f}\") ", .{
std.zig.fmtString(import_path),
});
try writer.writeSrcTokAbs(bw, item.data.token);
try bw.writeAll("\n");
}
}
}
pub fn renderInstructionContext(
gpa: Allocator,
block: []const Zir.Inst.Index,
block_index: usize,
scope_file: *Zcu.File,
parent_decl_node: Ast.Node.Index,
indent: u32,
bw: *std.Io.Writer,
) !void {
var arena = std.heap.ArenaAllocator.init(gpa);
defer arena.deinit();
var writer: Writer = .{
.gpa = gpa,
.arena = arena.allocator(),
.tree = scope_file.tree,
.code = scope_file.zir.?,
.indent = if (indent < 2) 2 else indent,
.parent_decl_node = parent_decl_node,
.recurse_decls = false,
.recurse_blocks = true,
};
try writer.writeBody(bw, block[0..block_index]);
try bw.splatByteAll(' ', writer.indent - 2);
try bw.print("> %{d} ", .{@intFromEnum(block[block_index])});
try writer.writeInstToStream(bw, block[block_index]);
try bw.writeByte('\n');
if (block_index + 1 < block.len) {
try writer.writeBody(bw, block[block_index + 1 ..]);
}
}
pub fn renderSingleInstruction(
gpa: Allocator,
inst: Zir.Inst.Index,
scope_file: *Zcu.File,
parent_decl_node: Ast.Node.Index,
indent: u32,
bw: *std.Io.Writer,
) !void {
var arena = std.heap.ArenaAllocator.init(gpa);
defer arena.deinit();
var writer: Writer = .{
.gpa = gpa,
.arena = arena.allocator(),
.tree = scope_file.tree,
.code = scope_file.zir.?,
.indent = indent,
.parent_decl_node = parent_decl_node,
.recurse_decls = false,
.recurse_blocks = false,
};
try bw.print("%{d} ", .{@intFromEnum(inst)});
try writer.writeInstToStream(bw, inst);
}
const Writer = struct {
gpa: Allocator,
arena: Allocator,
tree: ?Ast,
code: Zir,
indent: u32,
parent_decl_node: Ast.Node.Index,
recurse_decls: bool,
recurse_blocks: bool,
/// Using `std.zig.findLineColumn` whenever we need to resolve a source location makes ZIR
/// printing O(N^2), which can have drastic effects - taking a ZIR dump from a few seconds to
/// many minutes. Since we're usually resolving source locations close to one another,
/// preserving state across source location resolutions speeds things up a lot.
line_col_cursor: struct {
line: usize = 0,
column: usize = 0,
line_start: usize = 0,
off: usize = 0,
fn find(cur: *@This(), source: []const u8, want_offset: usize) std.zig.Loc {
if (want_offset < cur.off) {
// Go back to the start of this line
cur.off = cur.line_start;
cur.column = 0;
while (want_offset < cur.off) {
// Go back to the newline
cur.off -= 1;
// Seek to the start of the previous line
while (cur.off > 0 and source[cur.off - 1] != '\n') {
cur.off -= 1;
}
cur.line_start = cur.off;
cur.line -= 1;
}
}
// The cursor is now positioned before `want_offset`.
// Seek forward as in `std.zig.findLineColumn`.
while (cur.off < want_offset) : (cur.off += 1) {
switch (source[cur.off]) {
'\n' => {
cur.line += 1;
cur.column = 0;
cur.line_start = cur.off + 1;
},
else => {
cur.column += 1;
},
}
}
while (cur.off < source.len and source[cur.off] != '\n') {
cur.off += 1;
}
return .{
.line = cur.line,
.column = cur.column,
.source_line = source[cur.line_start..cur.off],
};
}
} = .{},
const Error = std.Io.Writer.Error || Allocator.Error;
fn writeInstToStream(
self: *Writer,
stream: *std.Io.Writer,
inst: Zir.Inst.Index,
) Error!void {
const tags = self.code.instructions.items(.tag);
const tag = tags[@intFromEnum(inst)];
try stream.print("= {s}(", .{@tagName(tags[@intFromEnum(inst)])});
switch (tag) {
.alloc,
.alloc_mut,
.alloc_comptime_mut,
.elem_type,
.indexable_ptr_elem_type,
.splat_op_result_ty,
.indexable_ptr_len,
.anyframe_type,
.bit_not,
.bool_not,
.slice_sentinel_ty,
.negate,
.negate_wrap,
.load,
.ensure_result_used,
.ensure_result_non_error,
.ensure_err_union_payload_void,
.ret_node,
.ret_load,
.resolve_inferred_alloc,
.optional_type,
.optional_payload_safe,
.optional_payload_unsafe,
.optional_payload_safe_ptr,
.optional_payload_unsafe_ptr,
.err_union_payload_unsafe,
.err_union_payload_unsafe_ptr,
.err_union_code,
.err_union_code_ptr,
.is_non_null,
.is_non_null_ptr,
.is_non_err,
.is_non_err_ptr,
.ret_is_non_err,
.typeof,
.type_info,
.size_of,
.bit_size_of,
.typeof_log2_int_type,
.int_from_ptr,
.compile_error,
.set_eval_branch_quota,
.int_from_enum,
.align_of,
.int_from_bool,
.embed_file,
.error_name,
.panic,
.set_runtime_safety,
.sqrt,
.sin,
.cos,
.tan,
.exp,
.exp2,
.log,
.log2,
.log10,
.abs,
.floor,
.ceil,
.trunc,
.round,
.tag_name,
.type_name,
.frame_type,
.clz,
.ctz,
.pop_count,
.byte_swap,
.bit_reverse,
.@"resume",
.make_ptr_const,
.validate_deref,
.validate_const,
.check_comptime_control_flow,
.opt_eu_base_ptr_init,
.restore_err_ret_index_unconditional,
.restore_err_ret_index_fn_entry,
=> try self.writeUnNode(stream, inst),
.ref,
.ret_implicit,
.validate_ref_ty,
=> try self.writeUnTok(stream, inst),
.bool_br_and,
.bool_br_or,
=> try self.writeBoolBr(stream, inst),
.validate_destructure => try self.writeValidateDestructure(stream, inst),
.array_type_sentinel => try self.writeArrayTypeSentinel(stream, inst),
.ptr_type => try self.writePtrType(stream, inst),
.int => try self.writeInt(stream, inst),
.int_big => try self.writeIntBig(stream, inst),
.float => try self.writeFloat(stream, inst),
.float128 => try self.writeFloat128(stream, inst),
.str => try self.writeStr(stream, inst),
.int_type => try self.writeIntType(stream, inst),
.save_err_ret_index => try self.writeSaveErrRetIndex(stream, inst),
.@"break",
.break_inline,
.switch_continue,
=> try self.writeBreak(stream, inst),
.slice_start => try self.writeSliceStart(stream, inst),
.slice_end => try self.writeSliceEnd(stream, inst),
.slice_sentinel => try self.writeSliceSentinel(stream, inst),
.slice_length => try self.writeSliceLength(stream, inst),
.union_init => try self.writeUnionInit(stream, inst),
// Struct inits
.struct_init_empty,
.struct_init_empty_result,
.struct_init_empty_ref_result,
=> try self.writeUnNode(stream, inst),
.struct_init_anon => try self.writeStructInitAnon(stream, inst),
.struct_init,
.struct_init_ref,
=> try self.writeStructInit(stream, inst),
.validate_struct_init_ty,
.validate_struct_init_result_ty,
=> try self.writeUnNode(stream, inst),
.validate_ptr_struct_init => try self.writeBlock(stream, inst),
.struct_init_field_type => try self.writeStructInitFieldType(stream, inst),
.struct_init_field_ptr => try self.writePlNodeField(stream, inst),
// Array inits
.array_init_anon => try self.writeArrayInitAnon(stream, inst),
.array_init,
.array_init_ref,
=> try self.writeArrayInit(stream, inst),
.validate_array_init_ty,
.validate_array_init_result_ty,
=> try self.writeValidateArrayInitTy(stream, inst),
.validate_array_init_ref_ty => try self.writeValidateArrayInitRefTy(stream, inst),
.validate_ptr_array_init => try self.writeBlock(stream, inst),
.array_init_elem_type => try self.writeArrayInitElemType(stream, inst),
.array_init_elem_ptr => try self.writeArrayInitElemPtr(stream, inst),
.atomic_load => try self.writeAtomicLoad(stream, inst),
.atomic_store => try self.writeAtomicStore(stream, inst),
.atomic_rmw => try self.writeAtomicRmw(stream, inst),
.shuffle => try self.writeShuffle(stream, inst),
.mul_add => try self.writeMulAdd(stream, inst),
.builtin_call => try self.writeBuiltinCall(stream, inst),
.field_type_ref => try self.writeFieldTypeRef(stream, inst),
.add,
.addwrap,
.add_sat,
.add_unsafe,
.array_cat,
.mul,
.mulwrap,
.mul_sat,
.sub,
.subwrap,
.sub_sat,
.cmp_lt,
.cmp_lte,
.cmp_eq,
.cmp_gte,
.cmp_gt,
.cmp_neq,
.div,
.has_decl,
.has_field,
.mod_rem,
.shl,
.shl_exact,
.shl_sat,
.shr,
.shr_exact,
.xor,
.store_node,
.store_to_inferred_ptr,
.error_union_type,
.merge_error_sets,
.bit_and,
.bit_or,
.int_from_float,
.float_from_int,
.ptr_from_int,
.enum_from_int,
.float_cast,
.int_cast,
.ptr_cast,
.truncate,
.div_exact,
.div_floor,
.div_trunc,
.mod,
.rem,
.bit_offset_of,
.offset_of,
.splat,
.reduce,
.bitcast,
.reify_int,
.vector_type,
.max,
.min,
.memcpy,
.memset,
.memmove,
.elem_ptr_node,
.elem_ptr_load,
.elem_ptr,
.elem_val,
.array_type,
.coerce_ptr_elem_ty,
=> try self.writePlNodeBin(stream, inst),
.for_len => try self.writePlNodeMultiOp(stream, inst),
.array_mul => try self.writeArrayMul(stream, inst),
.elem_val_imm => try self.writeElemValImm(stream, inst),
.@"export" => try self.writePlNodeExport(stream, inst),
.call => try self.writeCall(stream, inst, .direct),
.field_call => try self.writeCall(stream, inst, .field),
.block,
.block_inline,
.suspend_block,
.loop,
.c_import,
.typeof_builtin,
=> try self.writeBlock(stream, inst),
.block_comptime => try self.writeBlockComptime(stream, inst),
.condbr,
.condbr_inline,
=> try self.writeCondBr(stream, inst),
.@"try",
.try_ptr,
=> try self.writeTry(stream, inst),
.error_set_decl => try self.writeErrorSetDecl(stream, inst),
.switch_block,
.switch_block_ref,
=> try self.writeSwitchBlock(stream, inst),
.switch_block_err_union => try self.writeSwitchBlockErrUnion(stream, inst),
.field_ptr_load,
.field_ptr,
.decl_literal,
.decl_literal_no_coerce,
=> try self.writePlNodeField(stream, inst),
.field_ptr_named,
.field_ptr_named_load,
=> try self.writePlNodeFieldNamed(stream, inst),
.as_node, .as_shift_operand => try self.writeAs(stream, inst),
.repeat,
.repeat_inline,
.alloc_inferred,
.alloc_inferred_mut,
.alloc_inferred_comptime,
.alloc_inferred_comptime_mut,
.ret_ptr,
.ret_type,
.trap,
=> try self.writeNode(stream, inst),
.error_value,
.enum_literal,
.decl_ref,
.decl_val,
.ret_err_value,
.ret_err_value_code,
.param_anytype,
.param_anytype_comptime,
=> try self.writeStrTok(stream, inst),
.dbg_var_ptr,
.dbg_var_val,
=> try self.writeStrOp(stream, inst),
.param, .param_comptime => try self.writeParam(stream, inst),
.func => try self.writeFunc(stream, inst, false),
.func_inferred => try self.writeFunc(stream, inst, true),
.func_fancy => try self.writeFuncFancy(stream, inst),
.@"unreachable" => try self.writeUnreachable(stream, inst),
.dbg_stmt => try self.writeDbgStmt(stream, inst),
.@"defer" => try self.writeDefer(stream, inst),
.defer_err_code => try self.writeDeferErrCode(stream, inst),
.declaration => try self.writeDeclaration(stream, inst),
.extended => try self.writeExtended(stream, inst),
.import => try self.writeImport(stream, inst),
}
}
fn writeExtended(self: *Writer, stream: *std.Io.Writer, inst: Zir.Inst.Index) !void {
const extended = self.code.instructions.items(.data)[@intFromEnum(inst)].extended;
try stream.print("{s}(", .{@tagName(extended.opcode)});
switch (extended.opcode) {
.this,
.ret_addr,
.error_return_trace,
.frame,
.frame_address,
.breakpoint,
.disable_instrumentation,
.disable_intrinsics,
.c_va_start,
.in_comptime,
.value_placeholder,
=> try self.writeExtNode(stream, extended),
.builtin_src => {
try stream.writeAll("))");
const inst_data = self.code.extraData(Zir.Inst.LineColumn, extended.operand).data;
try stream.print(":{d}:{d}", .{ inst_data.line + 1, inst_data.column + 1 });
},
.@"asm" => try self.writeAsm(stream, extended, false),
.asm_expr => try self.writeAsm(stream, extended, true),
.alloc => try self.writeAllocExtended(stream, extended),
.compile_log => try self.writeNodeMultiOp(stream, extended),
.typeof_peer => try self.writeTypeofPeer(stream, extended),
.min_multi => try self.writeNodeMultiOp(stream, extended),
.max_multi => try self.writeNodeMultiOp(stream, extended),
.select => try self.writeSelect(stream, extended),
.add_with_overflow,
.sub_with_overflow,
.mul_with_overflow,
.shl_with_overflow,
=> try self.writeOverflowArithmetic(stream, extended),
.struct_decl => try self.writeStructDecl(stream, extended),
.union_decl => try self.writeUnionDecl(stream, extended),
.enum_decl => try self.writeEnumDecl(stream, extended),
.opaque_decl => try self.writeOpaqueDecl(stream, extended),
.tuple_decl => try self.writeTupleDecl(stream, extended),
.c_undef,
.c_include,
.set_float_mode,
.wasm_memory_size,
.int_from_error,
.error_from_int,
.c_va_copy,
.c_va_end,
.work_item_id,
.work_group_size,
.work_group_id,
.branch_hint,
.float_op_result_ty,
.reify_tuple,
.reify_pointer_sentinel_ty,
=> {
const inst_data = self.code.extraData(Zir.Inst.UnNode, extended.operand).data;
try self.writeInstRef(stream, inst_data.operand);
try stream.writeAll(")) ");
try self.writeSrcNode(stream, inst_data.node);
},
.builtin_extern,
.c_define,
.error_cast,
.wasm_memory_grow,
.prefetch,
.c_va_arg,
.reify_enum_value_slice_ty,
=> {
const inst_data = self.code.extraData(Zir.Inst.BinNode, extended.operand).data;
try self.writeInstRef(stream, inst_data.lhs);
try stream.writeAll(", ");
try self.writeInstRef(stream, inst_data.rhs);
try stream.writeAll(")) ");
try self.writeSrcNode(stream, inst_data.node);
},
.reify_slice_arg_ty => {
const reify_slice_arg_info: Zir.Inst.ReifySliceArgInfo = @enumFromInt(extended.operand);
const extra = self.code.extraData(Zir.Inst.UnNode, extended.operand).data;
try stream.print("{t}, ", .{reify_slice_arg_info});
try self.writeInstRef(stream, extra.operand);
try stream.writeAll(")) ");
try self.writeSrcNode(stream, extra.node);
},
.reify_pointer => {
const extra = self.code.extraData(Zir.Inst.ReifyPointer, extended.operand).data;
try self.writeInstRef(stream, extra.size);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.attrs);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.elem_ty);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.sentinel);
try stream.writeAll(")) ");
try self.writeSrcNode(stream, extra.node);
},
.reify_fn => {
const extra = self.code.extraData(Zir.Inst.ReifyFn, extended.operand).data;
try self.writeInstRef(stream, extra.param_types);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.param_attrs);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.ret_ty);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.fn_attrs);
try stream.writeAll(")) ");
try self.writeSrcNode(stream, extra.node);
},
.reify_struct => {
const extra = self.code.extraData(Zir.Inst.ReifyStruct, extended.operand).data;
const name_strat: Zir.Inst.NameStrategy = @enumFromInt(extended.small);
try stream.print("line({d}), {t}, ", .{ extra.src_line, name_strat });
try self.writeInstRef(stream, extra.layout);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.backing_ty);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.field_names);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.field_types);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.field_attrs);
try stream.writeAll(")) ");
const prev_parent_decl_node = self.parent_decl_node;
self.parent_decl_node = extra.node;
defer self.parent_decl_node = prev_parent_decl_node;
try self.writeSrcNode(stream, .zero);
},
.reify_union => {
const extra = self.code.extraData(Zir.Inst.ReifyUnion, extended.operand).data;
const name_strat: Zir.Inst.NameStrategy = @enumFromInt(extended.small);
try stream.print("line({d}), {t}, ", .{ extra.src_line, name_strat });
try self.writeInstRef(stream, extra.layout);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.arg_ty);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.field_names);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.field_types);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.field_attrs);
try stream.writeAll(")) ");
const prev_parent_decl_node = self.parent_decl_node;
self.parent_decl_node = extra.node;
defer self.parent_decl_node = prev_parent_decl_node;
try self.writeSrcNode(stream, .zero);
},
.reify_enum => {
const extra = self.code.extraData(Zir.Inst.ReifyEnum, extended.operand).data;
const name_strat: Zir.Inst.NameStrategy = @enumFromInt(extended.small);
try stream.print("line({d}), {t}, ", .{ extra.src_line, name_strat });
try self.writeInstRef(stream, extra.tag_ty);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.mode);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.field_names);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.field_values);
try stream.writeAll(")) ");
const prev_parent_decl_node = self.parent_decl_node;
self.parent_decl_node = extra.node;
defer self.parent_decl_node = prev_parent_decl_node;
try self.writeSrcNode(stream, .zero);
},
.cmpxchg => try self.writeCmpxchg(stream, extended),
.ptr_cast_full => try self.writePtrCastFull(stream, extended),
.ptr_cast_no_dest => try self.writePtrCastNoDest(stream, extended),
.restore_err_ret_index => try self.writeRestoreErrRetIndex(stream, extended),
.closure_get => try self.writeClosureGet(stream, extended),
.field_parent_ptr => try self.writeFieldParentPtr(stream, extended),
.builtin_value => try self.writeBuiltinValue(stream, extended),
.inplace_arith_result_ty => try self.writeInplaceArithResultTy(stream, extended),
.dbg_empty_stmt => try stream.writeAll("))"),
.astgen_error => try stream.writeAll("))"),
}
}
fn writeExtNode(self: *Writer, stream: *std.Io.Writer, extended: Zir.Inst.Extended.InstData) !void {
try stream.writeAll(")) ");
const src_node: Ast.Node.Offset = @enumFromInt(@as(i32, @bitCast(extended.operand)));
try self.writeSrcNode(stream, src_node);
}
fn writeArrayInitElemType(self: *Writer, stream: *std.Io.Writer, inst: Zir.Inst.Index) !void {
const inst_data = self.code.instructions.items(.data)[@intFromEnum(inst)].bin;
try self.writeInstRef(stream, inst_data.lhs);
try stream.print(", {d})", .{@intFromEnum(inst_data.rhs)});
}
fn writeUnNode(
self: *Writer,
stream: *std.Io.Writer,
inst: Zir.Inst.Index,
) Error!void {
const inst_data = self.code.instructions.items(.data)[@intFromEnum(inst)].un_node;
try self.writeInstRef(stream, inst_data.operand);
try stream.writeAll(") ");
try self.writeSrcNode(stream, inst_data.src_node);
}
fn writeUnTok(
self: *Writer,
stream: *std.Io.Writer,
inst: Zir.Inst.Index,
) Error!void {
const inst_data = self.code.instructions.items(.data)[@intFromEnum(inst)].un_tok;
try self.writeInstRef(stream, inst_data.operand);
try stream.writeAll(") ");
try self.writeSrcTok(stream, inst_data.src_tok);
}
fn writeValidateDestructure(
self: *Writer,
stream: *std.Io.Writer,
inst: Zir.Inst.Index,
) Error!void {
const inst_data = self.code.instructions.items(.data)[@intFromEnum(inst)].pl_node;
const extra = self.code.extraData(Zir.Inst.ValidateDestructure, inst_data.payload_index).data;
try self.writeInstRef(stream, extra.operand);
try stream.print(", {d}) (destructure=", .{extra.expect_len});
try self.writeSrcNode(stream, extra.destructure_node);
try stream.writeAll(") ");
try self.writeSrcNode(stream, inst_data.src_node);
}
fn writeValidateArrayInitTy(
self: *Writer,
stream: *std.Io.Writer,
inst: Zir.Inst.Index,
) Error!void {
const inst_data = self.code.instructions.items(.data)[@intFromEnum(inst)].pl_node;
const extra = self.code.extraData(Zir.Inst.ArrayInit, inst_data.payload_index).data;
try self.writeInstRef(stream, extra.ty);
try stream.print(", {d}) ", .{extra.init_count});
try self.writeSrcNode(stream, inst_data.src_node);
}
fn writeArrayTypeSentinel(
self: *Writer,
stream: *std.Io.Writer,
inst: Zir.Inst.Index,
) Error!void {
const inst_data = self.code.instructions.items(.data)[@intFromEnum(inst)].pl_node;
const extra = self.code.extraData(Zir.Inst.ArrayTypeSentinel, inst_data.payload_index).data;
try self.writeInstRef(stream, extra.len);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.sentinel);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.elem_type);
try stream.writeAll(") ");
try self.writeSrcNode(stream, inst_data.src_node);
}
fn writePtrType(
self: *Writer,
stream: *std.Io.Writer,
inst: Zir.Inst.Index,
) Error!void {
const inst_data = self.code.instructions.items(.data)[@intFromEnum(inst)].ptr_type;
const str_allowzero = if (inst_data.flags.is_allowzero) "allowzero, " else "";
const str_const = if (!inst_data.flags.is_mutable) "const, " else "";
const str_volatile = if (inst_data.flags.is_volatile) "volatile, " else "";
const extra = self.code.extraData(Zir.Inst.PtrType, inst_data.payload_index);
try self.writeInstRef(stream, extra.data.elem_type);
try stream.print(", {s}{s}{s}{s}", .{
str_allowzero,
str_const,
str_volatile,
@tagName(inst_data.size),
});
var extra_index = extra.end;
if (inst_data.flags.has_sentinel) {
try stream.writeAll(", ");
try self.writeInstRef(stream, @as(Zir.Inst.Ref, @enumFromInt(self.code.extra[extra_index])));
extra_index += 1;
}
if (inst_data.flags.has_align) {
try stream.writeAll(", align(");
try self.writeInstRef(stream, @as(Zir.Inst.Ref, @enumFromInt(self.code.extra[extra_index])));
extra_index += 1;
if (inst_data.flags.has_bit_range) {
const bit_start = extra_index + @intFromBool(inst_data.flags.has_addrspace);
try stream.writeAll(":");
try self.writeInstRef(stream, @as(Zir.Inst.Ref, @enumFromInt(self.code.extra[bit_start])));
try stream.writeAll(":");
try self.writeInstRef(stream, @as(Zir.Inst.Ref, @enumFromInt(self.code.extra[bit_start + 1])));
}
try stream.writeAll(")");
}
if (inst_data.flags.has_addrspace) {
try stream.writeAll(", addrspace(");
try self.writeInstRef(stream, @as(Zir.Inst.Ref, @enumFromInt(self.code.extra[extra_index])));
try stream.writeAll(")");
}
try stream.writeAll(") ");
try self.writeSrcNode(stream, extra.data.src_node);
}
fn writeInt(self: *Writer, stream: *std.Io.Writer, inst: Zir.Inst.Index) !void {
const inst_data = self.code.instructions.items(.data)[@intFromEnum(inst)].int;
try stream.print("{d})", .{inst_data});
}
fn writeIntBig(self: *Writer, stream: *std.Io.Writer, inst: Zir.Inst.Index) !void {
const inst_data = self.code.instructions.items(.data)[@intFromEnum(inst)].str;
const byte_count = inst_data.len * @sizeOf(std.math.big.Limb);
const limb_bytes = self.code.string_bytes[@intFromEnum(inst_data.start)..][0..byte_count];
// limb_bytes is not aligned properly; we must allocate and copy the bytes
// in order to accomplish this.
const limbs = try self.gpa.alloc(std.math.big.Limb, inst_data.len);
defer self.gpa.free(limbs);
@memcpy(mem.sliceAsBytes(limbs), limb_bytes);
const big_int: std.math.big.int.Const = .{
.limbs = limbs,
.positive = true,
};
const as_string = try big_int.toStringAlloc(self.gpa, 10, .lower);
defer self.gpa.free(as_string);
try stream.print("{s})", .{as_string});
}
fn writeFloat(self: *Writer, stream: *std.Io.Writer, inst: Zir.Inst.Index) !void {
const number = self.code.instructions.items(.data)[@intFromEnum(inst)].float;
try stream.print("{d})", .{number});
}
fn writeFloat128(self: *Writer, stream: *std.Io.Writer, inst: Zir.Inst.Index) !void {
const inst_data = self.code.instructions.items(.data)[@intFromEnum(inst)].pl_node;
const extra = self.code.extraData(Zir.Inst.Float128, inst_data.payload_index).data;
const number = extra.get();
// TODO improve std.format to be able to print f128 values
try stream.print("{d}) ", .{@as(f64, @floatCast(number))});
try self.writeSrcNode(stream, inst_data.src_node);
}
fn writeStr(
self: *Writer,
stream: *std.Io.Writer,
inst: Zir.Inst.Index,
) Error!void {
const inst_data = self.code.instructions.items(.data)[@intFromEnum(inst)].str;
const str = inst_data.get(self.code);
try stream.print("\"{f}\")", .{std.zig.fmtString(str)});
}
fn writeSliceStart(self: *Writer, stream: *std.Io.Writer, inst: Zir.Inst.Index) !void {
const inst_data = self.code.instructions.items(.data)[@intFromEnum(inst)].pl_node;
const extra = self.code.extraData(Zir.Inst.SliceStart, inst_data.payload_index).data;
try self.writeInstRef(stream, extra.lhs);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.start);
try stream.writeAll(") ");
try self.writeSrcNode(stream, inst_data.src_node);
}
fn writeSliceEnd(self: *Writer, stream: *std.Io.Writer, inst: Zir.Inst.Index) !void {
const inst_data = self.code.instructions.items(.data)[@intFromEnum(inst)].pl_node;
const extra = self.code.extraData(Zir.Inst.SliceEnd, inst_data.payload_index).data;
try self.writeInstRef(stream, extra.lhs);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.start);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.end);
try stream.writeAll(") ");
try self.writeSrcNode(stream, inst_data.src_node);
}
fn writeSliceSentinel(self: *Writer, stream: *std.Io.Writer, inst: Zir.Inst.Index) !void {
const inst_data = self.code.instructions.items(.data)[@intFromEnum(inst)].pl_node;
const extra = self.code.extraData(Zir.Inst.SliceSentinel, inst_data.payload_index).data;
try self.writeInstRef(stream, extra.lhs);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.start);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.end);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.sentinel);
try stream.writeAll(") ");
try self.writeSrcNode(stream, inst_data.src_node);
}
fn writeSliceLength(self: *Writer, stream: *std.Io.Writer, inst: Zir.Inst.Index) !void {
const inst_data = self.code.instructions.items(.data)[@intFromEnum(inst)].pl_node;
const extra = self.code.extraData(Zir.Inst.SliceLength, inst_data.payload_index).data;
try self.writeInstRef(stream, extra.lhs);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.start);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.len);
if (extra.sentinel != .none) {
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.sentinel);
}
try stream.writeAll(") ");
try self.writeSrcNode(stream, inst_data.src_node);
}
fn writeUnionInit(self: *Writer, stream: *std.Io.Writer, inst: Zir.Inst.Index) !void {
const inst_data = self.code.instructions.items(.data)[@intFromEnum(inst)].pl_node;
const extra = self.code.extraData(Zir.Inst.UnionInit, inst_data.payload_index).data;
try self.writeInstRef(stream, extra.union_type);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.field_name);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.init);
try stream.writeAll(") ");
try self.writeSrcNode(stream, inst_data.src_node);
}
fn writeShuffle(self: *Writer, stream: *std.Io.Writer, inst: Zir.Inst.Index) !void {
const inst_data = self.code.instructions.items(.data)[@intFromEnum(inst)].pl_node;
const extra = self.code.extraData(Zir.Inst.Shuffle, inst_data.payload_index).data;
try self.writeInstRef(stream, extra.elem_type);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.a);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.b);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.mask);
try stream.writeAll(") ");
try self.writeSrcNode(stream, inst_data.src_node);
}
fn writeSelect(self: *Writer, stream: *std.Io.Writer, extended: Zir.Inst.Extended.InstData) !void {
const extra = self.code.extraData(Zir.Inst.Select, extended.operand).data;
try self.writeInstRef(stream, extra.elem_type);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.pred);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.a);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.b);
try stream.writeAll(") ");
try self.writeSrcNode(stream, extra.node);
}
fn writeMulAdd(self: *Writer, stream: *std.Io.Writer, inst: Zir.Inst.Index) !void {
const inst_data = self.code.instructions.items(.data)[@intFromEnum(inst)].pl_node;
const extra = self.code.extraData(Zir.Inst.MulAdd, inst_data.payload_index).data;
try self.writeInstRef(stream, extra.mulend1);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.mulend2);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.addend);
try stream.writeAll(") ");
try self.writeSrcNode(stream, inst_data.src_node);
}
fn writeBuiltinCall(self: *Writer, stream: *std.Io.Writer, inst: Zir.Inst.Index) !void {
const inst_data = self.code.instructions.items(.data)[@intFromEnum(inst)].pl_node;
const extra = self.code.extraData(Zir.Inst.BuiltinCall, inst_data.payload_index).data;
try self.writeFlag(stream, "nodiscard ", extra.flags.ensure_result_used);
try self.writeFlag(stream, "nosuspend ", extra.flags.is_nosuspend);
try self.writeInstRef(stream, extra.modifier);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.callee);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.args);
try stream.writeAll(") ");
try self.writeSrcNode(stream, inst_data.src_node);
}
fn writeFieldParentPtr(self: *Writer, stream: *std.Io.Writer, extended: Zir.Inst.Extended.InstData) !void {
const extra = self.code.extraData(Zir.Inst.FieldParentPtr, extended.operand).data;
const FlagsInt = @typeInfo(Zir.Inst.FullPtrCastFlags).@"struct".backing_integer.?;
const flags: Zir.Inst.FullPtrCastFlags = @bitCast(@as(FlagsInt, @truncate(extended.small)));
if (flags.align_cast) try stream.writeAll("align_cast, ");
if (flags.addrspace_cast) try stream.writeAll("addrspace_cast, ");
if (flags.const_cast) try stream.writeAll("const_cast, ");
if (flags.volatile_cast) try stream.writeAll("volatile_cast, ");
try self.writeInstRef(stream, extra.parent_ptr_type);
try stream.writeAll(", ");
try self.writeInstRef(stream, extra.field_name);
try stream.writeAll(", ");