Merge pull request swiftlang#8815 from aschwaighofer/runtime_support_builtin_int512

Runtime: Add support for Builtin.Int512

Author: aschwaighofer

include/swift/Runtime/Metadata.h

@@ -907,6 +907,8 @@ SWIFT_RUNTIME_EXPORT
 const ValueWitnessTable VALUE_WITNESS_SYM(Bi128_); // Builtin.Int128
 SWIFT_RUNTIME_EXPORT
 const ValueWitnessTable VALUE_WITNESS_SYM(Bi256_); // Builtin.Int256
+SWIFT_RUNTIME_EXPORT
+const ValueWitnessTable VALUE_WITNESS_SYM(Bi512_); // Builtin.Int512
 
 // The object-pointer table can be used for arbitrary Swift refcounted
 // pointer types.
@@ -1337,6 +1339,8 @@ const FullOpaqueMetadata METADATA_SYM(Bi128_);    // Builtin.Int128
 SWIFT_RUNTIME_EXPORT
 const FullOpaqueMetadata METADATA_SYM(Bi256_);    // Builtin.Int256
 SWIFT_RUNTIME_EXPORT
+const FullOpaqueMetadata METADATA_SYM(Bi512_);    // Builtin.Int512
+SWIFT_RUNTIME_EXPORT
 const FullOpaqueMetadata METADATA_SYM(Bo);        // Builtin.NativeObject
 SWIFT_RUNTIME_EXPORT
 const FullOpaqueMetadata METADATA_SYM(Bb);        // Builtin.BridgeObject

stdlib/public/runtime/KnownMetadata.cpp

@@ -41,6 +41,9 @@ namespace {
   struct alignas(32) int256_like {
     char data[32];
   };
+  struct alignas(64) int512_like {
+    char data[64];
+  };
 } // end anonymous namespace
 
 // We use explicit sizes and alignments here just in case the C ABI
@@ -57,6 +60,8 @@ const ValueWitnessTable swift::VALUE_WITNESS_SYM(Bi128_) =
   ValueWitnessTableForBox<NativeBox<int128_like, 16>>::table;
 const ValueWitnessTable swift::VALUE_WITNESS_SYM(Bi256_) =
   ValueWitnessTableForBox<NativeBox<int256_like, 32>>::table;
+const ValueWitnessTable swift::VALUE_WITNESS_SYM(Bi512_) =
+  ValueWitnessTableForBox<NativeBox<int512_like, 64>>::table;
 
 /// The basic value-witness table for Swift object pointers.
 const ExtraInhabitantsValueWitnessTable swift::VALUE_WITNESS_SYM(Bo) =
@@ -157,6 +162,7 @@ OPAQUE_METADATA(Bi32_)
 OPAQUE_METADATA(Bi64_)
 OPAQUE_METADATA(Bi128_)
 OPAQUE_METADATA(Bi256_)
+OPAQUE_METADATA(Bi512_)
 OPAQUE_METADATA(Bo)
 OPAQUE_METADATA(Bb)
 OPAQUE_METADATA(Bp)

stdlib/public/runtime/Metadata.cpp

@@ -1381,6 +1381,9 @@ void swift::installCommonValueWitnesses(ValueWitnessTable *vwtable) {
     case sizeWithAlignmentMask(32, 31):
       commonVWT = &VALUE_WITNESS_SYM(Bi256_);
       break;
+    case sizeWithAlignmentMask(64, 63):
+      commonVWT = &VALUE_WITNESS_SYM(Bi512_);
+      break;
     }
 
   #define INSTALL_POD_COMMON_WITNESS(NAME) vwtable->NAME = commonVWT->NAME;