Merge branch 'main' of github.com:apple/swift into maxd/main-merge

# Conflicts:
#	stdlib/private/StdlibUnittest/StdlibUnittest.swift

Author: MaxDesiatov

CMakeLists.txt

@@ -449,7 +449,7 @@ option(SWIFT_ENABLE_DISPATCH
   TRUE)
 
 option(SWIFT_ENABLE_GLOBAL_ISEL_ARM64
-  "Enable global isel on arm64, arm64e, arm64_32"
+  "Enable global isel on arm64"
   FALSE)
 
 cmake_dependent_option(SWIFT_BUILD_SYNTAXPARSERLIB

include/swift/AST/DiagnosticsCommon.def

@@ -209,13 +209,6 @@ REMARK(remark_save_cache, none,
 // MARK: custom attribute diagnostics
 //------------------------------------------------------------------------------
 
-ERROR(ambiguous_custom_attribute_ref,none,
-      "ambiguous use of attribute %0", (Identifier))
-NOTE(ambiguous_custom_attribute_ref_fix,none,
-     "use '%0.' to reference the attribute %1 in module %2",
-     (StringRef, Identifier, Identifier))
-NOTE(found_attribute_candidate,none,
-     "found this attribute", ())
 ERROR(unknown_attribute,none,
       "unknown attribute '%0'", (StringRef))
 

include/swift/Basic/SupplementaryOutputPaths.h

@@ -146,6 +146,12 @@ struct SupplementaryOutputPaths {
   /// The output path to generate ABI baseline.
   std::string ABIDescriptorOutputPath;
 
+  /// The output path for YAML optimization record file.
+  std::string YAMLOptRecordPath;
+
+  /// The output path for bitstream optimization record file.
+  std::string BitstreamOptRecordPath;
+
   SupplementaryOutputPaths() = default;
   SupplementaryOutputPaths(const SupplementaryOutputPaths &) = default;
 
@@ -179,6 +185,10 @@ struct SupplementaryOutputPaths {
       fn(ModuleSummaryOutputPath);
     if (!ABIDescriptorOutputPath.empty())
       fn(ABIDescriptorOutputPath);
+    if (!YAMLOptRecordPath.empty())
+      fn(YAMLOptRecordPath);
+    if (!BitstreamOptRecordPath.empty())
+      fn(BitstreamOptRecordPath);
   }
 
   bool empty() const {
@@ -187,7 +197,8 @@ struct SupplementaryOutputPaths {
            ReferenceDependenciesFilePath.empty() &&
            SerializedDiagnosticsPath.empty() && LoadedModuleTracePath.empty() &&
            TBDPath.empty() && ModuleInterfaceOutputPath.empty() &&
-           ModuleSourceInfoOutputPath.empty() && ABIDescriptorOutputPath.empty();
+           ModuleSourceInfoOutputPath.empty() && ABIDescriptorOutputPath.empty() &&
+           YAMLOptRecordPath.empty() && BitstreamOptRecordPath.empty();
   }
 };
 } // namespace swift

include/swift/Frontend/FrontendInputsAndOutputs.h

@@ -259,6 +259,8 @@ class FrontendInputsAndOutputs {
   bool hasABIDescriptorOutputPath() const;
   bool hasModuleSummaryOutputPath() const;
   bool hasTBDPath() const;
+  bool hasYAMLOptRecordPath() const;
+  bool hasBitstreamOptRecordPath() const;
 
   bool hasDependencyTrackerPath() const;
 };

include/swift/Runtime/VoucherShims.h

@@ -41,13 +41,6 @@
 
 #if SWIFT_HAS_VOUCHER_HEADER
 
-static inline bool swift_voucher_needs_adopt(voucher_t _Nullable voucher) {
-  if (__builtin_available(macOS 12.0, iOS 15.0, tvOS 15.0, watchOS 8.0, *)) {
-    return voucher_needs_adopt(voucher);
-  }
-  return true;
-}
-
 #else
 
 // If the header isn't available, declare the necessary calls here.
@@ -64,10 +57,6 @@ extern "C" voucher_t _Nullable voucher_copy(void);
 // Consumes argument, returns retained value.
 extern "C" voucher_t _Nullable voucher_adopt(voucher_t _Nullable voucher);
 
-static inline bool swift_voucher_needs_adopt(voucher_t _Nullable voucher) {
-  return true;
-}
-
 #endif // __has_include(<os/voucher_private.h>)
 
 static inline void swift_voucher_release(voucher_t _Nullable voucher) {
@@ -88,10 +77,26 @@ static inline voucher_t _Nullable voucher_copy(void) { return nullptr; }
 static inline voucher_t _Nullable voucher_adopt(voucher_t _Nullable voucher) {
   return nullptr;
 }
-static inline bool swift_voucher_needs_adopt(voucher_t _Nullable voucher) {
-  return true;
-}
 static inline void swift_voucher_release(voucher_t _Nullable voucher) {}
 #endif // __APPLE__
 
+// Declare our own voucher_needs_adopt for when we don't get it from the SDK.
+// This declaration deliberately takes `void *` instead of `voucher_t`. When the
+// SDK provides one that takes `voucher_t`, then C++ overload resolution will
+// favor that one. When the SDK does not provide a declaration, then the call
+// site will invoke this stub instead.
+static inline bool voucher_needs_adopt(void * _Nullable voucher) {
+  return true;
+}
+
+static inline bool swift_voucher_needs_adopt(voucher_t _Nullable voucher) {
+#if __APPLE__
+  if (__builtin_available(macOS 12.0, iOS 15.0, tvOS 15.0, watchOS 8.0, *))
+    return voucher_needs_adopt(voucher);
+  return true;
+#else
+  return voucher_needs_adopt(voucher);
 #endif
+}
+
+#endif // SWIFT_CONCURRENCY_VOUCHERSHIMS_H

lib/AST/GenericSignature.cpp

@@ -23,6 +23,7 @@
 #include "swift/AST/Module.h"
 #include "swift/AST/PrettyStackTrace.h"
 #include "swift/AST/Types.h"
+#include "swift/Basic/SourceManager.h"
 #include "swift/Basic/STLExtras.h"
 #include "RequirementMachine/RequirementMachine.h"
 #include <functional>
@@ -1492,9 +1493,12 @@ int swift::compareAssociatedTypes(AssociatedTypeDecl *assocType1,
     return compareProtocols;
 
   // Error case: if we have two associated types with the same name in the
-  // same protocol, just tie-break based on address.
-  if (assocType1 != assocType2)
-    return assocType1 < assocType2 ? -1 : +1;
+  // same protocol, just tie-break based on source location.
+  if (assocType1 != assocType2) {
+    auto &ctx = assocType1->getASTContext();
+    return ctx.SourceMgr.isBeforeInBuffer(assocType1->getLoc(),
+                                          assocType2->getLoc()) ? -1 : +1;
+  }
 
   return 0;
 }

lib/AST/GenericSignatureBuilder.cpp

@@ -4012,7 +4012,7 @@ ConstraintResult GenericSignatureBuilder::expandConformanceRequirement(
     // Add all of the inherited protocol requirements, recursively.
     auto inheritedReqResult =
       addInheritedRequirements(proto, selfType.getUnresolvedType(), source,
-                               proto->getModuleContext());
+                               nullptr);
     if (isErrorResult(inheritedReqResult))
       return inheritedReqResult;
   }

lib/AST/NameLookup.cpp

@@ -2105,11 +2105,22 @@ directReferencesForUnqualifiedTypeLookup(DeclNameRef name,
   auto descriptor = UnqualifiedLookupDescriptor(name, dc, loc, options);
   auto lookup = evaluateOrDefault(ctx.evaluator,
                                   UnqualifiedLookupRequest{descriptor}, {});
+
+  unsigned nominalTypeDeclCount = 0;
   for (const auto &result : lookup.allResults()) {
     auto typeDecl = cast<TypeDecl>(result.getValueDecl());
+
+    if (isa<NominalTypeDecl>(typeDecl))
+      nominalTypeDeclCount++;
+
     results.push_back(typeDecl);
   }
 
+  // If we saw multiple nominal type declarations with the same name,
+  // the result of the lookup is definitely ambiguous.
+  if (nominalTypeDeclCount > 1)
+    results.clear();
+
   return results;
 }
 
@@ -2607,54 +2618,6 @@ CustomAttrNominalRequest::evaluate(Evaluator &evaluator,
     }
   }
 
-  // If we have more than one attribute declaration, we have an ambiguity.
-  // So, emit an ambiguity diagnostic.
-  if (auto typeRepr = attr->getTypeRepr()) {
-    if (nominals.size() > 1) {
-      SmallVector<NominalTypeDecl *, 4> ambiguousCandidates;
-      // Filter out declarations that cannot be attributes.
-      for (auto decl : nominals) {
-        if (isa<ProtocolDecl>(decl)) {
-          continue;
-        }
-        ambiguousCandidates.push_back(decl);
-      }
-      if (ambiguousCandidates.size() > 1) {
-        auto attrName = nominals.front()->getName();
-        ctx.Diags.diagnose(typeRepr->getLoc(),
-                           diag::ambiguous_custom_attribute_ref, attrName);
-        for (auto candidate : ambiguousCandidates) {
-          ctx.Diags.diagnose(candidate->getLoc(),
-                             diag::found_attribute_candidate);
-          // If the candidate is a top-level attribute, let's suggest
-          // adding module name to resolve the ambiguity.
-          if (candidate->getDeclContext()->isModuleScopeContext()) {
-            auto moduleName = candidate->getParentModule()->getName();
-            ctx.Diags
-                .diagnose(typeRepr->getLoc(),
-                          diag::ambiguous_custom_attribute_ref_fix,
-                          moduleName.str(), attrName, moduleName)
-                .fixItInsert(typeRepr->getLoc(), moduleName.str().str() + ".");
-          }
-        }
-        return nullptr;
-      }
-    }
-  }
-
-  // There is no nominal type with this name, so complain about this being
-  // an unknown attribute.
-  std::string typeName;
-  if (auto typeRepr = attr->getTypeRepr()) {
-    llvm::raw_string_ostream out(typeName);
-    typeRepr->print(out);
-  } else {
-    typeName = attr->getType().getString();
-  }
-
-  ctx.Diags.diagnose(attr->getLocation(), diag::unknown_attribute, typeName);
-  attr->setInvalid();
-
   return nullptr;
 }
 

lib/Frontend/ArgsToFrontendOutputsConverter.cpp

@@ -341,11 +341,14 @@ SupplementaryOutputPathsComputer::getSupplementaryOutputPathsFromArguments()
       options::OPT_emit_module_summary_path);
   auto abiDescriptorOutput = getSupplementaryFilenamesFromArguments(
       options::OPT_emit_abi_descriptor_path);
+  auto optRecordOutput = getSupplementaryFilenamesFromArguments(
+      options::OPT_save_optimization_record_path);
   if (!objCHeaderOutput || !moduleOutput || !moduleDocOutput ||
       !dependenciesFile || !referenceDependenciesFile ||
       !serializedDiagnostics || !fixItsOutput || !loadedModuleTrace || !TBD ||
       !moduleInterfaceOutput || !privateModuleInterfaceOutput ||
-      !moduleSourceInfoOutput || !moduleSummaryOutput || !abiDescriptorOutput) {
+      !moduleSourceInfoOutput || !moduleSummaryOutput || !abiDescriptorOutput ||
+      !optRecordOutput) {
     return None;
   }
   std::vector<SupplementaryOutputPaths> result;
@@ -368,6 +371,8 @@ SupplementaryOutputPathsComputer::getSupplementaryOutputPathsFromArguments()
     sop.ModuleSourceInfoOutputPath = (*moduleSourceInfoOutput)[i];
     sop.ModuleSummaryOutputPath = (*moduleSummaryOutput)[i];
     sop.ABIDescriptorOutputPath = (*abiDescriptorOutput)[i];
+    sop.YAMLOptRecordPath = (*optRecordOutput)[i];
+    sop.BitstreamOptRecordPath = (*optRecordOutput)[i];
     result.push_back(sop);
   }
   return result;
@@ -479,6 +484,15 @@ SupplementaryOutputPathsComputer::computeOutputPathsForOneInput(
       file_types::TY_SwiftModuleFile, mainOutputIfUsableForModule,
       defaultSupplementaryOutputPathExcludingExtension);
 
+  auto YAMLOptRecordPath = determineSupplementaryOutputFilename(
+      OPT_save_optimization_record_path, pathsFromArguments.YAMLOptRecordPath,
+      file_types::TY_YAMLOptRecord, "",
+      defaultSupplementaryOutputPathExcludingExtension);
+  auto bitstreamOptRecordPath = determineSupplementaryOutputFilename(
+      OPT_save_optimization_record_path, pathsFromArguments.BitstreamOptRecordPath,
+      file_types::TY_BitstreamOptRecord, "",
+      defaultSupplementaryOutputPathExcludingExtension);
+
   SupplementaryOutputPaths sop;
   sop.ObjCHeaderOutputPath = objcHeaderOutputPath;
   sop.ModuleOutputPath = moduleOutputPath;
@@ -494,6 +508,8 @@ SupplementaryOutputPathsComputer::computeOutputPathsForOneInput(
   sop.ModuleSourceInfoOutputPath = moduleSourceInfoOutputPath;
   sop.ModuleSummaryOutputPath = moduleSummaryOutputPath;
   sop.ABIDescriptorOutputPath = ABIDescriptorOutputPath;
+  sop.YAMLOptRecordPath = YAMLOptRecordPath;
+  sop.BitstreamOptRecordPath = bitstreamOptRecordPath;
   return sop;
 }
 
@@ -576,6 +592,8 @@ createFromTypeToPathMap(const TypeToPathMap *map) {
       {file_types::TY_SwiftModuleSummaryFile, paths.ModuleSummaryOutputPath},
       {file_types::TY_PrivateSwiftModuleInterfaceFile,
        paths.PrivateModuleInterfaceOutputPath},
+      {file_types::TY_YAMLOptRecord, paths.YAMLOptRecordPath},
+      {file_types::TY_BitstreamOptRecord, paths.BitstreamOptRecordPath},
   };
   for (const std::pair<file_types::ID, std::string &> &typeAndString :
        typesAndStrings) {

lib/Frontend/CompilerInvocation.cpp

@@ -1891,8 +1891,7 @@ static bool ParseIRGenArgs(IRGenOptions &Opts, ArgList &Args,
   }
 
   if (SWIFT_ENABLE_GLOBAL_ISEL_ARM64 &&
-      (Triple.getArch() == llvm::Triple::aarch64 ||
-       Triple.getArch() == llvm::Triple::aarch64_32) &&
+      Triple.getArch() == llvm::Triple::aarch64 &&
       Triple.getArchName() != "arm64e") {
     Opts.EnableGlobalISel = true;
   }