[NFC] SwiftCompilerSources: add isConvertPointerToPointerArgument

Author: atrick

SwiftCompilerSources/Sources/SIL/Function.swift

@@ -40,6 +40,8 @@ final public class Function : CustomStringConvertible, HasShortDescription, Hash
 
   public var isAutodiffVJP: Bool { bridged.isAutodiffVJP() }
 
+  public var isConvertPointerToPointerArgument: Bool { bridged.isConvertPointerToPointerArgument() }
+
   public var specializationLevel: Int { bridged.specializationLevel() }
 
   public var hasOwnership: Bool { bridged.hasOwnership() }

include/swift/SIL/SILBridging.h

@@ -525,6 +525,7 @@ struct BridgedFunction {
   BRIDGED_INLINE void setLinkage(BridgedLinkage linkage) const;
   BRIDGED_INLINE void setIsSerialized(bool isSerialized) const;
   bool isTrapNoReturn() const;
+  bool isConvertPointerToPointerArgument() const;
   bool isAutodiffVJP() const;
   SwiftInt specializationLevel() const;
   SWIFT_IMPORT_UNSAFE BridgedSubstitutionMap getMethodSubstitutions(BridgedSubstitutionMap contextSubs) const;

lib/SILOptimizer/PassManager/PassManager.cpp

@@ -1608,6 +1608,15 @@ bool BridgedFunction::isTrapNoReturn() const {
   return swift::isTrapNoReturnFunction(getFunction());
 }
 
+bool BridgedFunction::isConvertPointerToPointerArgument() const {
+  if (auto declRef = getFunction()->getDeclRef()) {
+    auto *conversionDecl =
+      declRef.getASTContext().getConvertPointerToPointerArgument();
+    return declRef.getFuncDecl() == conversionDecl;
+  }
+  return false;
+}
+
 bool BridgedFunction::isAutodiffVJP() const {
   return swift::isDifferentiableFuncComponent(
       getFunction(), swift::AutoDiffFunctionComponent::VJP);