Merge pull request #1426 from swiftwasm/master

[pull] swiftwasm from master

Author: pull[bot]

include/swift/ABI/MetadataValues.h

@@ -1118,6 +1118,9 @@ namespace SpecialPointerAuthDiscriminators {
   /// Runtime function variables exported by the runtime.
   const uint16_t RuntimeFunctionEntry = 0x625b;
 
+  /// Protocol conformance descriptors.
+  const uint16_t ProtocolConformanceDescriptor = 0xc6eb;
+
   /// Value witness functions.
   const uint16_t InitializeBufferWithCopyOfBuffer = 0xda4a;
   const uint16_t Destroy = 0x04f8;

include/swift/AST/ASTTypeIDZone.def

@@ -40,6 +40,7 @@ SWIFT_TYPEID_NAMED(ConstructorDecl *, ConstructorDecl)
 SWIFT_TYPEID_NAMED(CustomAttr *, CustomAttr)
 SWIFT_TYPEID_NAMED(Decl *, Decl)
 SWIFT_TYPEID_NAMED(EnumDecl *, EnumDecl)
+SWIFT_TYPEID_NAMED(FuncDecl *, FuncDecl)
 SWIFT_TYPEID_NAMED(GenericParamList *, GenericParamList)
 SWIFT_TYPEID_NAMED(GenericTypeParamType *, GenericTypeParamType)
 SWIFT_TYPEID_NAMED(InfixOperatorDecl *, InfixOperatorDecl)

include/swift/AST/ASTTypeIDs.h

@@ -30,6 +30,7 @@ class ConstructorDecl;
 class CustomAttr;
 class Decl;
 class EnumDecl;
+class FuncDecl;
 enum class FunctionBuilderBodyPreCheck : uint8_t;
 class GenericParamList;
 class GenericSignature;

include/swift/AST/DiagnosticsDriver.def

@@ -186,6 +186,10 @@ ERROR(cannot_find_migration_script, none,
 ERROR(error_darwin_static_stdlib_not_supported, none,
       "-static-stdlib is no longer supported on Apple platforms", ())
 
+ERROR(error_darwin_only_supports_libcxx, none,
+      "The only C++ standard library supported on Apple platforms is libc++",
+      ())
+
 WARNING(warn_drv_darwin_sdk_invalid_settings, none,
     "SDK settings were ignored because 'SDKSettings.json' could not be parsed",
     ())

include/swift/AST/IRGenOptions.h

@@ -123,6 +123,12 @@ struct PointerAuthOptions : clang::PointerAuthOptions {
   /// Type descriptor data pointers when passed as arguments.
   PointerAuthSchema TypeDescriptorsAsArguments;
 
+  /// Protocol conformance descriptors.
+  PointerAuthSchema ProtocolConformanceDescriptors;
+
+  /// Protocol conformance descriptors when passed as arguments.
+  PointerAuthSchema ProtocolConformanceDescriptorsAsArguments;
+
   /// Resumption functions from yield-once coroutines.
   PointerAuthSchema YieldOnceResumeFunctions;
 

include/swift/AST/PlatformKinds.def

@@ -25,11 +25,11 @@
 AVAILABILITY_PLATFORM(iOS, "iOS")
 AVAILABILITY_PLATFORM(tvOS, "tvOS")
 AVAILABILITY_PLATFORM(watchOS, "watchOS")
-AVAILABILITY_PLATFORM(OSX, "macOS")
+AVAILABILITY_PLATFORM(macOS, "macOS")
 AVAILABILITY_PLATFORM(iOSApplicationExtension, "application extensions for iOS")
 AVAILABILITY_PLATFORM(tvOSApplicationExtension, "application extensions for tvOS")
 AVAILABILITY_PLATFORM(watchOSApplicationExtension, "application extensions for watchOS")
-AVAILABILITY_PLATFORM(OSXApplicationExtension, "application extensions for macOS")
+AVAILABILITY_PLATFORM(macOSApplicationExtension, "application extensions for macOS")
 AVAILABILITY_PLATFORM(macCatalyst, "Mac Catalyst")
 AVAILABILITY_PLATFORM(macCatalystApplicationExtension, "application extensions for Mac Catalyst")
 

include/swift/AST/TypeCheckRequests.h

@@ -2564,6 +2564,23 @@ class CustomAttrTypeRequest
   void cacheResult(Type value) const;
 };
 
+class SynthesizeMainFunctionRequest
+    : public SimpleRequest<SynthesizeMainFunctionRequest,
+                           FuncDecl *(Decl *),
+                           RequestFlags::Cached> {
+public:
+  using SimpleRequest::SimpleRequest;
+
+private:
+  friend SimpleRequest;
+
+  // Evaluation.
+  FuncDecl *evaluate(Evaluator &evaluator, Decl *) const;
+
+public:
+  bool isCached() const { return true; }
+};
+
 // Allow AnyValue to compare two Type values, even though Type doesn't
 // support ==.
 template<>

include/swift/AST/TypeCheckerTypeIDZone.def

@@ -274,3 +274,5 @@ SWIFT_REQUEST(TypeChecker, LookupAllConformancesInContextRequest,
               Uncached, NoLocationInfo)
 SWIFT_REQUEST(TypeChecker, SimpleDidSetRequest, 
               bool(AccessorDecl *), Cached, NoLocationInfo)
+SWIFT_REQUEST(TypeChecker, SynthesizeMainFunctionRequest,
+              FuncDecl *(Decl *), Cached, NoLocationInfo)

include/swift/Driver/Compilation.h

@@ -56,7 +56,7 @@ namespace driver {
 enum class OutputLevel {
   /// Indicates that normal output should be produced.
   Normal,
-  
+
   /// Indicates that only jobs should be printed and not run. (-###)
   PrintJobs,
 
@@ -83,7 +83,7 @@ class Compilation {
     const bool &EnableIncrementalBuild;
     const bool EnableSourceRangeDependencies;
 
-    /// If not empty, the path to use to log the comparision.
+    /// If not empty, the path to use to log the comparison.
     const StringRef CompareIncrementalSchemesPath;
 
     const unsigned SwiftInputCount;

include/swift/Driver/ToolChain.h

@@ -294,6 +294,9 @@ class ToolChain {
   void getClangLibraryPath(const llvm::opt::ArgList &Args,
                            SmallString<128> &LibPath) const;
 
+  // Returns the Clang driver executable to use for linking.
+  const char *getClangLinkerDriver(const llvm::opt::ArgList &Args) const;
+
   /// Returns the name the clang library for a given sanitizer would have on
   /// the current toolchain.
   ///

include/swift/Frontend/ModuleInterfaceLoader.h

@@ -141,6 +141,8 @@ class ExplicitSwiftModuleLoader: public SerializedModuleLoaderBase {
     std::unique_ptr<llvm::MemoryBuffer> *ModuleDocBuffer,
     std::unique_ptr<llvm::MemoryBuffer> *ModuleSourceInfoBuffer) override;
 
+  bool canImportModule(Located<Identifier> mID) override;
+
   bool isCached(StringRef DepPath) override { return false; };
 
   struct Implementation;

include/swift/Option/FrontendOptions.td

@@ -554,10 +554,6 @@ def sil_unroll_threshold : Separate<["-"], "sil-unroll-threshold">,
   MetaVarName<"<250>">,
   HelpText<"Controls the aggressiveness of loop unrolling">;
 
-// FIXME: This option is now redundant and should eventually be removed.
-def sil_merge_partial_modules : Flag<["-"], "sil-merge-partial-modules">,
-  Alias<merge_modules>;
-
 def sil_verify_all : Flag<["-"], "sil-verify-all">,
   HelpText<"Verify SIL after each transform">;
 

include/swift/Option/Options.td

@@ -154,7 +154,7 @@ Flag<["-"], "enable-only-one-dependency-file">, Flags<[DoesNotAffectIncrementalB
 def disable_only_one_dependency_file :
 Flag<["-"], "disable-only-one-dependency-file">, Flags<[DoesNotAffectIncrementalBuild]>,
  HelpText<"Disables incremental build optimization that only produces one dependencies file">;
- 
+
 
 def enable_source_range_dependencies :
 Flag<["-"], "enable-source-range-dependencies">, Flags<[]>,
@@ -167,7 +167,7 @@ HelpText<"Print a simple message comparing dependencies with source ranges (w/ f
 
 def driver_compare_incremental_schemes_path :
 Separate<["-"], "driver-compare-incremental-schemes-path">, Flags<[ArgumentIsPath,DoesNotAffectIncrementalBuild]>,
-HelpText<"Path to use for machine-readable comparision">,
+HelpText<"Path to use for machine-readable comparison">,
 MetaVarName<"<path>">;
 
 def driver_compare_incremental_schemes_path_EQ :
@@ -556,6 +556,14 @@ def disable_direct_intramodule_dependencies : Flag<["-"],
   Flags<[FrontendOption, HelpHidden]>,
   HelpText<"Disable experimental dependency tracking that never cascades">;
 
+def enable_experimental_cxx_interop :
+  Flag<["-"], "enable-experimental-cxx-interop">,
+  HelpText<"Allow importing C++ modules into Swift (experimental feature)">;
+
+def experimental_cxx_stdlib :
+  Separate<["-"], "experimental-cxx-stdlib">,
+  HelpText<"C++ standard library to use; forwarded to Clang's -stdlib flag">;
+
 
 // Diagnostic control options
 def suppress_warnings : Flag<["-"], "suppress-warnings">,

include/swift/Runtime/FoundationSupport.h

@@ -0,0 +1,40 @@
+//===--- FoundationSupport.cpp - Support functions for Foundation ---------===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2020 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See https://swift.org/LICENSE.txt for license information
+// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
+//
+// Helper functions for the Foundation framework.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SWIFT_RUNTIME_FOUNDATION_SUPPORT_H
+#define SWIFT_RUNTIME_FOUNDATION_SUPPORT_H
+
+#include "swift/Runtime/Config.h"
+
+#if SWIFT_OBJC_INTEROP
+#include <objc/runtime.h>
+
+#ifdef __cplusplus
+namespace swift { extern "C" {
+#endif
+
+/// Returns a boolean indicating whether the Objective-C name of a class type is
+/// stable across executions, i.e., if the class name is safe to serialize. (The
+/// names of private and local types are unstable.)
+SWIFT_RUNTIME_STDLIB_SPI
+bool _swift_isObjCTypeNameSerializable(Class theClass);
+
+#ifdef __cplusplus
+}} // extern "C", namespace swift
+#endif
+
+#endif // SWIFT_OBJC_INTEROP
+#endif // SWIFT_RUNTIME_FOUNDATION_SUPPORT_H