[Autodiff] Fixes build issues on Linux

Author: jkshtj

SwiftCompilerSources/Sources/Optimizer/FunctionPasses/ClosureSpecialization.swift

@@ -881,12 +881,9 @@ private extension FunctionConvention {
 
 private extension ParameterInfo {
   func withSpecializedConvention(isArgTypeTrivial: Bool) -> Self {
-    let specializedParamConvention =
-      if self.convention.isAllowedIndirectConvForClosureSpec {
-        self.convention
-      } else {
-        isArgTypeTrivial ? ArgumentConvention.directUnowned : ArgumentConvention.directOwned
-      }
+    let specializedParamConvention = self.convention.isAllowedIndirectConvForClosureSpec
+      ? self.convention
+      : isArgTypeTrivial ? ArgumentConvention.directUnowned : ArgumentConvention.directOwned
 
     return ParameterInfo(type: self.type, convention: specializedParamConvention, options: self.options, 
                          hasLoweredAddresses: self.hasLoweredAddresses)

SwiftCompilerSources/Sources/Optimizer/Utilities/SpecializationCloner.swift

@@ -30,9 +30,9 @@ struct SpecializationCloner {
 
   var entryBlock: BasicBlock {
     if cloned.blocks.isEmpty {
-      cloned.appendNewBlock(context)
+      return cloned.appendNewBlock(context)
     } else {
-      cloned.entryBlock
+      return cloned.entryBlock
     }
   }
 

include/swift/SILOptimizer/OptimizerBridging.h

@@ -184,9 +184,9 @@ struct BridgedCloner {
 struct BridgedSpecializationCloner {
   swift::ClosureSpecializationCloner * _Nonnull closureSpecCloner;
 
-  BridgedSpecializationCloner(BridgedFunction emptySpecializedFunction);
-  BridgedFunction getCloned() const;
-  BridgedBasicBlock getClonedBasicBlock(BridgedBasicBlock originalBasicBlock) const;
+  SWIFT_IMPORT_UNSAFE BridgedSpecializationCloner(BridgedFunction emptySpecializedFunction);
+  SWIFT_IMPORT_UNSAFE BridgedFunction getCloned() const;
+  SWIFT_IMPORT_UNSAFE BridgedBasicBlock getClonedBasicBlock(BridgedBasicBlock originalBasicBlock) const;
   void cloneFunctionBody(BridgedFunction originalFunction, BridgedBasicBlock clonedEntryBlock, BridgedValueArray clonedEntryBlockArgs) const;
 };
 
@@ -334,7 +334,7 @@ struct BridgedPassContext {
   BRIDGED_INLINE void beginTransformFunction(BridgedFunction function) const;
   BRIDGED_INLINE void endTransformFunction() const;
   BRIDGED_INLINE bool continueWithNextSubpassRun(OptionalBridgedInstruction inst) const;
-  BRIDGED_INLINE BridgedPassContext initializeNestedPassContext(BridgedFunction newFunction) const;
+  SWIFT_IMPORT_UNSAFE BRIDGED_INLINE BridgedPassContext initializeNestedPassContext(BridgedFunction newFunction) const;
   BRIDGED_INLINE void deinitializedNestedPassContext() const;
 
   // SSAUpdater