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Convert `size` attribute to expressions. 

This CL updates the size attribute to parse expressions.

Bug: tint:1633
Change-Id: Ia12650848e7041faa53013d195f4313b8d3e9969
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/103320
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Auto-Submit: Dan Sinclair <dsinclair@chromium.org>
This commit is contained in:
dan sinclair 2022-10-14 18:27:35 +00:00 committed by Dawn LUCI CQ
parent 18bcdebc02
commit 308c55d9e0
11 changed files with 143 additions and 34 deletions
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9
src/tint/reader/wgsl/parser_impl.cc
View File

@ -3551,13 +3551,16 @@ Maybe<const ast::Attribute*> ParserImpl::attribute() {
if (t == "size") {
const char* use = "size attribute";
return expect_paren_block(use, [&]() -> Result {
auto val = expect_positive_sint(use);
if (val.errored) {
auto expr = expression();
if (expr.errored) {
return Failure::kErrored;
}
if (!expr.matched) {
return add_error(peek(), "expected size expression");
}
match(Token::Type::kComma);
return builder_.MemberSize(t.source(), AInt(val.value));
return builder_.MemberSize(t.source(), expr.value);
});
}

14
src/tint/reader/wgsl/parser_impl_error_msg_test.cc
View File

@ -862,17 +862,9 @@ struct S { @align(fn) i : i32, };
}
TEST_F(ParserImplErrorTest, GlobalDeclStructMemberSizeInvaldValue) {
EXPECT("struct S { @size(x) i : i32, };",
R"(test.wgsl:1:18 error: expected signed integer literal for size attribute
struct S { @size(x) i : i32, };
^
)");
}
TEST_F(ParserImplErrorTest, GlobalDeclStructMemberSizeNegativeValue) {
EXPECT("struct S { @size(-2) i : i32, };",
R"(test.wgsl:1:18 error: size attribute must be positive
struct S { @size(-2) i : i32, };
EXPECT("struct S { @size(if) i : i32, };",
R"(test.wgsl:1:18 error: expected size expression
struct S { @size(if) i : i32, };
^^
)");
}

4
src/tint/reader/wgsl/parser_impl_struct_body_decl_test.cc
View File

@ -71,12 +71,12 @@ TEST_F(ParserImplTest, StructBodyDecl_InvalidAlign) {
TEST_F(ParserImplTest, StructBodyDecl_InvalidSize) {
auto p = parser(R"(
{
@size(nan) a : i32,
@size(if) a : i32,
})");
auto m = p->expect_struct_body_decl();
ASSERT_TRUE(p->has_error());
ASSERT_TRUE(m.errored);
EXPECT_EQ(p->error(), "3:9: expected signed integer literal for size attribute");
EXPECT_EQ(p->error(), "3:9: expected size expression");
}
TEST_F(ParserImplTest, StructBodyDecl_MissingClosingBracket) {

4
src/tint/reader/wgsl/parser_impl_struct_member_attribute_decl_test.cc
View File

@ -39,12 +39,12 @@ TEST_F(ParserImplTest, AttributeDecl_Single) {
}
TEST_F(ParserImplTest, AttributeDecl_InvalidAttribute) {
auto p = parser("@size(nan)");
auto p = parser("@size(if)");
auto attrs = p->attribute_list();
EXPECT_TRUE(p->has_error()) << p->error();
EXPECT_TRUE(attrs.errored);
EXPECT_FALSE(attrs.matched);
EXPECT_EQ(p->error(), "1:7: expected signed integer literal for size attribute");
EXPECT_EQ(p->error(), "1:7: expected size expression");
}
} // namespace

36
src/tint/reader/wgsl/parser_impl_struct_member_attribute_test.cc
View File

@ -23,7 +23,7 @@ TEST_F(ParserImplTest, Attribute_Size) {
EXPECT_TRUE(attr.matched);
EXPECT_FALSE(attr.errored);
ASSERT_NE(attr.value, nullptr);
ASSERT_FALSE(p->has_error());
ASSERT_FALSE(p->has_error()) << p->error();
auto* member_attr = attr.value->As<ast::Attribute>();
ASSERT_NE(member_attr, nullptr);
@ -34,13 +34,39 @@ TEST_F(ParserImplTest, Attribute_Size) {
EXPECT_EQ(o->expr->As<ast::IntLiteralExpression>()->value, 4u);
}
TEST_F(ParserImplTest, Attribute_Size_Expression) {
auto p = parser("size(4 + 5)");
auto attr = p->attribute();
EXPECT_TRUE(attr.matched);
EXPECT_FALSE(attr.errored);
ASSERT_NE(attr.value, nullptr);
ASSERT_FALSE(p->has_error()) << p->error();
auto* member_attr = attr.value->As<ast::Attribute>();
ASSERT_NE(member_attr, nullptr);
ASSERT_TRUE(member_attr->Is<ast::StructMemberSizeAttribute>());
auto* o = member_attr->As<ast::StructMemberSizeAttribute>();
ASSERT_TRUE(o->expr->Is<ast::BinaryExpression>());
auto* expr = o->expr->As<ast::BinaryExpression>();
EXPECT_EQ(ast::BinaryOp::kAdd, expr->op);
auto* v = expr->lhs->As<ast::IntLiteralExpression>();
ASSERT_NE(nullptr, v);
EXPECT_EQ(v->value, 4u);
v = expr->rhs->As<ast::IntLiteralExpression>();
ASSERT_NE(nullptr, v);
EXPECT_EQ(v->value, 5u);
}
TEST_F(ParserImplTest, Attribute_Size_TrailingComma) {
auto p = parser("size(4,)");
auto attr = p->attribute();
EXPECT_TRUE(attr.matched);
EXPECT_FALSE(attr.errored);
ASSERT_NE(attr.value, nullptr);
ASSERT_FALSE(p->has_error());
ASSERT_FALSE(p->has_error()) << p->error();
auto* member_attr = attr.value->As<ast::Attribute>();
ASSERT_NE(member_attr, nullptr);
@ -78,17 +104,17 @@ TEST_F(ParserImplTest, Attribute_Size_MissingValue) {
EXPECT_TRUE(attr.errored);
EXPECT_EQ(attr.value, nullptr);
EXPECT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:6: expected signed integer literal for size attribute");
EXPECT_EQ(p->error(), "1:6: expected size expression");
}
TEST_F(ParserImplTest, Attribute_Size_MissingInvalid) {
auto p = parser("size(nan)");
auto p = parser("size(if)");
auto attr = p->attribute();
EXPECT_FALSE(attr.matched);
EXPECT_TRUE(attr.errored);
EXPECT_EQ(attr.value, nullptr);
EXPECT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:6: expected signed integer literal for size attribute");
EXPECT_EQ(p->error(), "1:6: expected size expression");
}
TEST_F(ParserImplTest, Attribute_Align) {

4
src/tint/reader/wgsl/parser_impl_struct_member_test.cc
View File

@ -115,14 +115,14 @@ TEST_F(ParserImplTest, StructMember_ParsesWithMultipleattributes) {
}
TEST_F(ParserImplTest, StructMember_InvalidAttribute) {
auto p = parser("@size(nan) a : i32,");
auto p = parser("@size(if) a : i32,");
auto m = p->expect_struct_member();
ASSERT_TRUE(m.errored);
ASSERT_EQ(m.value, nullptr);
ASSERT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:7: expected signed integer literal for size attribute");
EXPECT_EQ(p->error(), "1:7: expected size expression");
}
} // namespace

72
src/tint/resolver/attribute_validation_test.cc
View File

@ -743,6 +743,78 @@ TEST_F(StructMemberAttributeTest, Align_Attribute_Override) {
R"(error: @align requires a const-expression, but expression is an override-expression)");
}
TEST_F(StructMemberAttributeTest, Size_Attribute_Const) {
GlobalConst("val", ty.i32(), Expr(4_i));
Structure("mystruct", utils::Vector{Member("a", ty.f32(), utils::Vector{MemberSize("val")})});
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(StructMemberAttributeTest, Size_Attribute_ConstNegative) {
GlobalConst("val", ty.i32(), Expr(-2_i));
Structure("mystruct", utils::Vector{Member(
"a", ty.f32(), utils::Vector{MemberSize(Source{{12, 34}}, "val")})});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: 'size' attribute must be positive)");
}
TEST_F(StructMemberAttributeTest, Size_Attribute_ConstF32) {
GlobalConst("val", ty.f32(), Expr(1.23_f));
Structure("mystruct", utils::Vector{Member(
"a", ty.f32(), utils::Vector{MemberSize(Source{{12, 34}}, "val")})});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: 'size' must be an i32 or u32 value)");
}
TEST_F(StructMemberAttributeTest, Size_Attribute_ConstU32) {
GlobalConst("val", ty.u32(), Expr(4_u));
Structure("mystruct", utils::Vector{Member(
"a", ty.f32(), utils::Vector{MemberSize(Source{{12, 34}}, "val")})});
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(StructMemberAttributeTest, Size_Attribute_ConstAInt) {
GlobalConst("val", Expr(4_a));
Structure("mystruct", utils::Vector{Member(
"a", ty.f32(), utils::Vector{MemberSize(Source{{12, 34}}, "val")})});
EXPECT_TRUE(r()->Resolve()) << r()->error();
}
TEST_F(StructMemberAttributeTest, Size_Attribute_ConstAFloat) {
GlobalConst("val", Expr(2.0_a));
Structure("mystruct", utils::Vector{Member(
"a", ty.f32(), utils::Vector{MemberSize(Source{{12, 34}}, "val")})});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:34 error: 'size' must be an i32 or u32 value)");
}
TEST_F(StructMemberAttributeTest, Size_Attribute_Var) {
GlobalVar(Source{{1, 2}}, "val", ty.f32(), ast::AddressSpace::kPrivate, ast::Access::kUndefined,
Expr(1.23_f));
Structure(Source{{6, 4}}, "mystruct",
utils::Vector{Member(Source{{12, 5}}, "a", ty.f32(),
utils::Vector{MemberSize(Expr(Source{{12, 35}}, "val"))})});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), R"(12:35 error: var 'val' cannot be referenced at module-scope
1:2 note: var 'val' declared here)");
}
TEST_F(StructMemberAttributeTest, Size_Attribute_Override) {
Override("val", ty.f32(), Expr(1.23_f));
Structure("mystruct", utils::Vector{Member("a", ty.f32(), utils::Vector{MemberSize("val")})});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(
r()->error(),
R"(error: @size requires a const-expression, but expression is an override-expression)");
}
} // namespace StructAndStructMemberTests
using ArrayAttributeTest = TestWithParams;

7
src/tint/resolver/dependency_graph.cc
View File

@ -426,12 +426,15 @@ class DependencyScanner {
TraverseExpression(align->expr);
return;
}
if (auto* size = attr->As<ast::StructMemberSizeAttribute>()) {
TraverseExpression(size->expr);
return;
}
if (attr->IsAnyOf<ast::BindingAttribute, ast::BuiltinAttribute, ast::GroupAttribute,
ast::IdAttribute, ast::InternalAttribute, ast::InterpolateAttribute,
ast::InvariantAttribute, ast::LocationAttribute, ast::StageAttribute,
ast::StrideAttribute, ast::StructMemberOffsetAttribute,
ast::StructMemberSizeAttribute>()) {
ast::StrideAttribute, ast::StructMemberOffsetAttribute>()) {
return;
}

6
src/tint/resolver/dependency_graph_test.cc
View File

@ -1230,9 +1230,11 @@ TEST_F(ResolverDependencyGraphTraversalTest, SymbolsReached) {
Alias(Sym(), T);
Structure(Sym(), //
utils::Vector{Member(Sym(), T,
utils::Vector{
Member(Sym(), T, utils::Vector{MemberAlign(V)}) //
});
//
MemberAlign(V), MemberSize(V) //
})});
GlobalVar(Sym(), T, V);
GlobalConst(Sym(), T, V);
Func(Sym(), //

15
src/tint/resolver/resolver.cc
View File

@ -2885,15 +2885,26 @@ sem::Struct* Resolver::Structure(const ast::Struct* str) {
if (!materialized) {
return nullptr;
}
if (!materialized->Type()->IsAnyOf<sem::U32, sem::I32>()) {
AddError("'size' must be an i32 or u32 value", s->source);
return nullptr;
}
auto const_value = materialized->ConstantValue();
if (!const_value) {
AddError("'size' must be constant expression", s->expr->source);
return nullptr;
}
{
auto value = const_value->As<AInt>();
if (value <= 0) {
AddError("'size' attribute must be positive", s->source);
return nullptr;
}
}
auto value = const_value->As<uint64_t>();
if (value < size) {
AddError("size must be at least as big as the type's size (" +
AddError("'size' must be at least as big as the type's size (" +
std::to_string(size) + ")",
s->source);
return nullptr;

4
src/tint/resolver/validation_test.cc
View File

@ -1266,11 +1266,11 @@ TEST_F(ResolverValidationTest, ZeroStructMemberAlignAttribute) {
TEST_F(ResolverValidationTest, ZeroStructMemberSizeAttribute) {
Structure("S", utils::Vector{
Member("a", ty.f32(), utils::Vector{MemberSize(Source{{12, 34}}, 0_a)}),
Member("a", ty.f32(), utils::Vector{MemberSize(Source{{12, 34}}, 1_a)}),
});
EXPECT_FALSE(r()->Resolve());
EXPECT_EQ(r()->error(), "12:34 error: size must be at least as big as the type's size (4)");
EXPECT_EQ(r()->error(), "12:34 error: 'size' must be at least as big as the type's size (4)");
}
TEST_F(ResolverValidationTest, OffsetAndSizeAttribute) {