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Replace nominal type descriptors with a hierarchy of context descriptors.

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This new format more efficiently represents existing information, while
more accurately encoding important information about nested generic
contexts with same-type and layout constraints that need to be evaluated
at runtime. It's also designed with an eye to forward- and
backward-compatible expansion for ABI stability with future Swift
versions.
This commit is contained in:
Joe Groff
2017-12-12 09:57:36 -08:00
parent 9ac1dc80b0
commit a7a3b17597
58 changed files with 3418 additions and 1291 deletions
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6
unittests/runtime/Metadata.cpp
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@@ -192,7 +192,7 @@ GenericMetadataTest<StructMetadata, 1> MetadataTest1 = {
// Fields
{
MetadataKind::Struct,
reinterpret_cast<const NominalTypeDescriptor*>(&Global1)
reinterpret_cast<const TypeContextDescriptor*>(&Global1)
},
// Arguments
@@ -300,7 +300,7 @@ TEST(MetadataTest, getGenericMetadata) {
auto fields = reinterpret_cast<void * const *>(inst);
EXPECT_EQ(MetadataKind::Struct, inst->getKind());
EXPECT_EQ(reinterpret_cast<const NominalTypeDescriptor *>(&Global1),
EXPECT_EQ(reinterpret_cast<const TypeContextDescriptor *>(&Global1),
inst->Description);
EXPECT_EQ(&Global2, fields[2]);
@@ -318,7 +318,7 @@ TEST(MetadataTest, getGenericMetadata) {
auto fields = reinterpret_cast<void * const *>(inst);
EXPECT_EQ(MetadataKind::Struct, inst->getKind());
EXPECT_EQ(reinterpret_cast<const NominalTypeDescriptor *>(&Global1),
EXPECT_EQ(reinterpret_cast<const TypeContextDescriptor *>(&Global1),
inst->Description);
EXPECT_EQ(&Global3, fields[2]);