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AstGen: implement @prefetch() builtin

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Isaac Freund 2021-12-07 19:34:44 +01:00 committed by Isaac Freund
parent 47c309c34a
commit 175463d75d
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8 changed files with 90 additions and 1 deletions
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25
lib/std/builtin.zig
View File

@ -651,6 +651,31 @@ pub const CallOptions = struct {
};
};
/// This data structure is used by the Zig language code generation and
/// therefore must be kept in sync with the compiler implementation.
pub const PrefetchOptions = struct {
/// Whether the prefetch should prepare for a read or a write.
rw: Rw = .read,
/// 0 means no temporal locality. That is, the data can be immediately
/// dropped from the cache after it is accessed.
///
/// 3 means high temporal locality. That is, the data should be kept in
/// the cache as it is likely to be accessed again soon.
locality: u2 = 3,
/// The cache that the prefetch should be preformed on.
cache: Cache = .data,
pub const Rw = enum {
read,
write,
};
pub const Cache = enum {
instruction,
data,
};
};
/// This data structure is used by the Zig language code generation and
/// therefore must be kept in sync with the compiler implementation.
pub const ExportOptions = struct {

10
src/AstGen.zig
View File

@ -7226,6 +7226,16 @@ fn builtinCall(
});
return rvalue(gz, rl, result, node);
},
.prefetch => {
const ptr = try expr(gz, scope, .none, params[0]);
const options = try comptimeExpr(gz, scope, .{ .ty = .prefetch_options_type }, params[1]);
const result = try gz.addExtendedPayload(.prefetch, Zir.Inst.BinNode{
.node = gz.nodeIndexToRelative(node),
.lhs = ptr,
.rhs = options,
});
return rvalue(gz, rl, result, node);
},
}
}

8
src/BuiltinFn.zig
View File

@ -67,6 +67,7 @@ pub const Tag = enum {
mul_with_overflow,
panic,
pop_count,
prefetch,
ptr_cast,
ptr_to_int,
rem,
@ -615,6 +616,13 @@ pub const list = list: {
.param_count = 2,
},
},
.{
"@prefetch",
.{
.tag = .prefetch,
.param_count = 2,
},
},
.{
"@ptrCast",
.{

14
src/Sema.zig
View File

@ -1042,6 +1042,7 @@ fn zirExtended(sema: *Sema, block: *Block, inst: Zir.Inst.Index) CompileError!Ai
.c_define => return sema.zirCDefine( block, extended),
.wasm_memory_size => return sema.zirWasmMemorySize( block, extended),
.wasm_memory_grow => return sema.zirWasmMemoryGrow( block, extended),
.prefetch => return sema.zirPrefetch( block, extended),
// zig fmt: on
}
}
@ -11104,6 +11105,16 @@ fn zirWasmMemoryGrow(
return sema.fail(block, src, "TODO: implement Sema.zirWasmMemoryGrow", .{});
}
fn zirPrefetch(
sema: *Sema,
block: *Block,
extended: Zir.Inst.Extended.InstData,
) CompileError!Air.Inst.Ref {
const extra = sema.code.extraData(Zir.Inst.BinNode, extended.operand).data;
const src: LazySrcLoc = .{ .node_offset = extra.node };
return sema.fail(block, src, "TODO: implement Sema.zirPrefetch", .{});
}
fn zirBuiltinExtern(
sema: *Sema,
block: *Block,
@ -14231,6 +14242,7 @@ fn resolveTypeFields(sema: *Sema, block: *Block, src: LazySrcLoc, ty: Type) Comp
.float_mode => return sema.resolveBuiltinTypeFields(block, src, "FloatMode"),
.reduce_op => return sema.resolveBuiltinTypeFields(block, src, "ReduceOp"),
.call_options => return sema.resolveBuiltinTypeFields(block, src, "CallOptions"),
.prefetch_options => return sema.resolveBuiltinTypeFields(block, src, "PrefetchOptions"),
.@"union", .union_tagged => {
const union_obj = ty.cast(Type.Payload.Union).?.data;
@ -14819,6 +14831,7 @@ fn typeHasOnePossibleValue(
.float_mode,
.reduce_op,
.call_options,
.prefetch_options,
.export_options,
.extern_options,
.type_info,
@ -15032,6 +15045,7 @@ pub fn addType(sema: *Sema, ty: Type) !Air.Inst.Ref {
.float_mode => return .float_mode_type,
.reduce_op => return .reduce_op_type,
.call_options => return .call_options_type,
.prefetch_options => return .prefetch_options_type,
.export_options => return .export_options_type,
.extern_options => return .extern_options_type,
.type_info => return .type_info_type,

8
src/Zir.zig
View File

@ -1572,6 +1572,9 @@ pub const Inst = struct {
wasm_memory_size,
/// `operand` is payload index to `BinNode`.
wasm_memory_grow,
/// The `@prefetch` builtin.
/// `operand` is payload index to `BinNode`.
prefetch,
pub const InstData = struct {
opcode: Extended,
@ -1648,6 +1651,7 @@ pub const Inst = struct {
float_mode_type,
reduce_op_type,
call_options_type,
prefetch_options_type,
export_options_type,
extern_options_type,
type_info_type,
@ -1917,6 +1921,10 @@ pub const Inst = struct {
.ty = Type.initTag(.type),
.val = Value.initTag(.call_options_type),
},
.prefetch_options_type = .{
.ty = Type.initTag(.type),
.val = Value.initTag(.prefetch_options_type),
},
.export_options_type = .{
.ty = Type.initTag(.type),
.val = Value.initTag(.export_options_type),

2
src/print_zir.zig
View File

@ -477,7 +477,7 @@ const Writer = struct {
try self.writeSrc(stream, src);
},
.builtin_extern, .c_define, .wasm_memory_grow => {
.builtin_extern, .c_define, .wasm_memory_grow, .prefetch => {
const inst_data = self.code.extraData(Zir.Inst.BinNode, extended.operand).data;
const src: LazySrcLoc = .{ .node_offset = inst_data.node };
try self.writeInstRef(stream, inst_data.lhs);

19
src/type.zig
View File

@ -123,6 +123,7 @@ pub const Type = extern union {
.empty_struct_literal,
.@"struct",
.call_options,
.prefetch_options,
.export_options,
.extern_options,
=> return .Struct,
@ -798,6 +799,7 @@ pub const Type = extern union {
.float_mode,
.reduce_op,
.call_options,
.prefetch_options,
.export_options,
.extern_options,
.type_info,
@ -1027,6 +1029,7 @@ pub const Type = extern union {
.float_mode => return writer.writeAll("std.builtin.FloatMode"),
.reduce_op => return writer.writeAll("std.builtin.ReduceOp"),
.call_options => return writer.writeAll("std.builtin.CallOptions"),
.prefetch_options => return writer.writeAll("std.builtin.PrefetchOptions"),
.export_options => return writer.writeAll("std.builtin.ExportOptions"),
.extern_options => return writer.writeAll("std.builtin.ExternOptions"),
.type_info => return writer.writeAll("std.builtin.TypeInfo"),
@ -1318,6 +1321,7 @@ pub const Type = extern union {
.float_mode => return "FloatMode",
.reduce_op => return "ReduceOp",
.call_options => return "CallOptions",
.prefetch_options => return "PrefetchOptions",
.export_options => return "ExportOptions",
.extern_options => return "ExternOptions",
.type_info => return "TypeInfo",
@ -1376,6 +1380,7 @@ pub const Type = extern union {
.float_mode,
.reduce_op,
.call_options,
.prefetch_options,
.export_options,
.extern_options,
.manyptr_u8,
@ -1502,6 +1507,7 @@ pub const Type = extern union {
.float_mode => return Value.initTag(.float_mode_type),
.reduce_op => return Value.initTag(.reduce_op_type),
.call_options => return Value.initTag(.call_options_type),
.prefetch_options => return Value.initTag(.prefetch_options_type),
.export_options => return Value.initTag(.export_options_type),
.extern_options => return Value.initTag(.extern_options_type),
.type_info => return Value.initTag(.type_info_type),
@ -1563,6 +1569,7 @@ pub const Type = extern union {
.float_mode,
.reduce_op,
.call_options,
.prefetch_options,
.export_options,
.extern_options,
.@"anyframe",
@ -1750,6 +1757,7 @@ pub const Type = extern union {
.float_mode,
.reduce_op,
.call_options,
.prefetch_options,
.export_options,
.extern_options,
=> return 1,
@ -1929,6 +1937,7 @@ pub const Type = extern union {
.var_args_param => unreachable,
.generic_poison => unreachable,
.call_options => unreachable, // missing call to resolveTypeFields
.prefetch_options => unreachable, // missing call to resolveTypeFields
.export_options => unreachable, // missing call to resolveTypeFields
.extern_options => unreachable, // missing call to resolveTypeFields
.type_info => unreachable, // missing call to resolveTypeFields
@ -2269,6 +2278,7 @@ pub const Type = extern union {
.float_mode,
.reduce_op,
.call_options,
.prefetch_options,
.export_options,
.extern_options,
.type_info,
@ -2794,6 +2804,7 @@ pub const Type = extern union {
.float_mode,
.reduce_op,
.call_options,
.prefetch_options,
.export_options,
.extern_options,
.type_info,
@ -3294,6 +3305,7 @@ pub const Type = extern union {
.float_mode,
.reduce_op,
.call_options,
.prefetch_options,
.export_options,
.extern_options,
.type_info,
@ -3502,6 +3514,7 @@ pub const Type = extern union {
.float_mode,
.reduce_op,
.call_options,
.prefetch_options,
.export_options,
.extern_options,
=> @panic("TODO resolve std.builtin types"),
@ -3577,6 +3590,7 @@ pub const Type = extern union {
.float_mode,
.reduce_op,
.call_options,
.prefetch_options,
.export_options,
.extern_options,
=> @panic("TODO resolve std.builtin types"),
@ -3701,6 +3715,7 @@ pub const Type = extern union {
.float_mode,
.reduce_op,
.call_options,
.prefetch_options,
.export_options,
.extern_options,
.type_info,
@ -3741,6 +3756,7 @@ pub const Type = extern union {
.float_mode,
.reduce_op,
.call_options,
.prefetch_options,
.export_options,
.extern_options,
.type_info,
@ -3801,6 +3817,7 @@ pub const Type = extern union {
.float_mode,
.reduce_op,
.call_options,
.prefetch_options,
.export_options,
.extern_options,
=> @panic("TODO resolve std.builtin types"),
@ -3862,6 +3879,7 @@ pub const Type = extern union {
float_mode,
reduce_op,
call_options,
prefetch_options,
export_options,
extern_options,
type_info,
@ -3989,6 +4007,7 @@ pub const Type = extern union {
.float_mode,
.reduce_op,
.call_options,
.prefetch_options,
.export_options,
.extern_options,
.type_info,

5
src/value.zig
View File

@ -67,6 +67,7 @@ pub const Value = extern union {
float_mode_type,
reduce_op_type,
call_options_type,
prefetch_options_type,
export_options_type,
extern_options_type,
type_info_type,
@ -244,6 +245,7 @@ pub const Value = extern union {
.float_mode_type,
.reduce_op_type,
.call_options_type,
.prefetch_options_type,
.export_options_type,
.extern_options_type,
.type_info_type,
@ -434,6 +436,7 @@ pub const Value = extern union {
.float_mode_type,
.reduce_op_type,
.call_options_type,
.prefetch_options_type,
.export_options_type,
.extern_options_type,
.type_info_type,
@ -652,6 +655,7 @@ pub const Value = extern union {
.float_mode_type => return out_stream.writeAll("std.builtin.FloatMode"),
.reduce_op_type => return out_stream.writeAll("std.builtin.ReduceOp"),
.call_options_type => return out_stream.writeAll("std.builtin.CallOptions"),
.prefetch_options_type => return out_stream.writeAll("std.builtin.PrefetchOptions"),
.export_options_type => return out_stream.writeAll("std.builtin.ExportOptions"),
.extern_options_type => return out_stream.writeAll("std.builtin.ExternOptions"),
.type_info_type => return out_stream.writeAll("std.builtin.TypeInfo"),
@ -829,6 +833,7 @@ pub const Value = extern union {
.float_mode_type => Type.initTag(.float_mode),
.reduce_op_type => Type.initTag(.reduce_op),
.call_options_type => Type.initTag(.call_options),
.prefetch_options_type => Type.initTag(.prefetch_options),
.export_options_type => Type.initTag(.export_options),
.extern_options_type => Type.initTag(.extern_options),
.type_info_type => Type.initTag(.type_info),