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spirv: fieldParentPtr

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This commit is contained in:
Ali Chraghi 2023-10-15 22:45:00 +03:30 committed by Andrew Kelley
parent 1456f95b3c
commit e44152e252
3 changed files with 48 additions and 15 deletions
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56
src/codegen/spirv.zig
View File

@ -950,7 +950,12 @@ const DeclGen = struct {
});
return result_id;
},
.field => unreachable, // TODO
.field => |field| {
const base_ptr_ty = mod.intern_pool.typeOf(field.base).toType();
const base_ptr = try self.constantPtr(base_ptr_ty, field.base.toValue());
const field_index: u32 = @intCast(field.index);
return try self.structFieldPtr(ptr_ty, base_ptr_ty, base_ptr, field_index);
},
}
}
@ -2021,6 +2026,7 @@ const DeclGen = struct {
.union_init => try self.airUnionInit(inst),
.struct_field_val => try self.airStructFieldVal(inst),
.field_parent_ptr => try self.airFieldParentPtr(inst),
.struct_field_ptr_index_0 => try self.airStructFieldPtrIndex(inst, 0),
.struct_field_ptr_index_1 => try self.airStructFieldPtrIndex(inst, 1),
@ -2918,13 +2924,8 @@ const DeclGen = struct {
return result_id;
}
fn airIntFromPtr(self: *DeclGen, inst: Air.Inst.Index) !?IdRef {
if (self.liveness.isUnused(inst)) return null;
const un_op = self.air.instructions.items(.data)[inst].un_op;
const operand_id = try self.resolve(un_op);
fn intFromPtr(self: *DeclGen, operand_id: IdRef) !IdRef {
const result_type_id = try self.resolveTypeId(Type.usize);
const result_id = self.spv.allocId();
try self.func.body.emit(self.spv.gpa, .OpConvertPtrToU, .{
.id_result_type = result_type_id,
@ -2934,6 +2935,14 @@ const DeclGen = struct {
return result_id;
}
fn airIntFromPtr(self: *DeclGen, inst: Air.Inst.Index) !?IdRef {
if (self.liveness.isUnused(inst)) return null;
const un_op = self.air.instructions.items(.data)[inst].un_op;
const operand_id = try self.resolve(un_op);
return try self.intFromPtr(operand_id);
}
fn airFloatFromInt(self: *DeclGen, inst: Air.Inst.Index) !?IdRef {
if (self.liveness.isUnused(inst)) return null;
@ -3474,13 +3483,44 @@ const DeclGen = struct {
}
}
fn airFieldParentPtr(self: *DeclGen, inst: Air.Inst.Index) !?IdRef {
const mod = self.module;
const ty_pl = self.air.instructions.items(.data)[inst].ty_pl;
const extra = self.air.extraData(Air.FieldParentPtr, ty_pl.payload).data;
const parent_ty = self.air.getRefType(ty_pl.ty).childType(mod);
const res_ty = try self.resolveType(self.air.getRefType(ty_pl.ty), .indirect);
const usize_ty = Type.usize;
const usize_ty_ref = try self.resolveType(usize_ty, .direct);
const field_ptr = try self.resolve(extra.field_ptr);
const field_ptr_int = try self.intFromPtr(field_ptr);
const field_offset = parent_ty.structFieldOffset(extra.field_index, mod);
const base_ptr_int = base_ptr_int: {
if (field_offset == 0) break :base_ptr_int field_ptr_int;
const field_offset_id = try self.constInt(usize_ty_ref, field_offset);
break :base_ptr_int try self.binOpSimple(usize_ty, field_ptr_int, field_offset_id, .OpISub);
};
const base_ptr = self.spv.allocId();
try self.func.body.emit(self.spv.gpa, .OpConvertUToPtr, .{
.id_result_type = self.spv.resultId(res_ty),
.id_result = base_ptr,
.integer_value = base_ptr_int,
});
return base_ptr;
}
fn structFieldPtr(
self: *DeclGen,
result_ptr_ty: Type,
object_ptr_ty: Type,
object_ptr: IdRef,
field_index: u32,
) !?IdRef {
) !IdRef {
const result_ty_ref = try self.resolveType(result_ptr_ty, .direct);
const mod = self.module;

5
test/behavior/field_parent_ptr.zig
View File

@ -4,7 +4,6 @@ const builtin = @import("builtin");
test "@fieldParentPtr non-first field" {
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
try testParentFieldPtr(&foo.c);
try comptime testParentFieldPtr(&foo.c);
@ -13,7 +12,6 @@ test "@fieldParentPtr non-first field" {
test "@fieldParentPtr first field" {
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
try testParentFieldPtrFirst(&foo.a);
try comptime testParentFieldPtrFirst(&foo.a);
@ -53,7 +51,6 @@ test "@fieldParentPtr untagged union" {
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
try testFieldParentPtrUnion(&bar.c);
try comptime testFieldParentPtrUnion(&bar.c);
@ -80,7 +77,6 @@ test "@fieldParentPtr tagged union" {
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
try testFieldParentPtrTaggedUnion(&bar_tagged.c);
try comptime testFieldParentPtrTaggedUnion(&bar_tagged.c);
@ -107,7 +103,6 @@ test "@fieldParentPtr extern union" {
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
try testFieldParentPtrExternUnion(&bar_extern.c);
try comptime testFieldParentPtrExternUnion(&bar_extern.c);

2
test/behavior/tuple.zig
View File

@ -214,7 +214,6 @@ test "fieldParentPtr of tuple" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
var x: u32 = 0;
const tuple = .{ x, x };
@ -225,7 +224,6 @@ test "fieldParentPtr of anon struct" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
var x: u32 = 0;
const anon_st = .{ .foo = x, .bar = x };