SIL: add some Function APIs

* `var wasDeserializedCanonical`
* `var genericSignature`
* `func mapTypeIntoContext`
* `var forwardingSubstitutionMap`

Author: eeckstein

SwiftCompilerSources/Sources/AST/Type.swift

@@ -40,7 +40,7 @@ public struct Type: TypeProperties, CustomStringConvertible, NoReflectionChildre
     self.bridged = bridgedOrNil
   }
 
-  init(bridged: BridgedASTType) {
+  public init(bridged: BridgedASTType) {
     self.bridged = bridged
   }
 

SwiftCompilerSources/Sources/SIL/Function.swift

@@ -36,6 +36,8 @@ final public class Function : CustomStringConvertible, HasShortDescription, Hash
     hasher.combine(ObjectIdentifier(self))
   }
 
+  public var wasDeserializedCanonical: Bool { bridged.wasDeserializedCanonical() }
+
   public var isTrapNoReturn: Bool { bridged.isTrapNoReturn() }
 
   public var isAutodiffVJP: Bool { bridged.isAutodiffVJP() }
@@ -61,6 +63,18 @@ final public class Function : CustomStringConvertible, HasShortDescription, Hash
     CanonicalType(bridged: bridged.getLoweredFunctionTypeInContext())
   }
 
+  public var genericSignature: GenericSignature {
+    GenericSignature(bridged: bridged.getGenericSignature())
+  }
+
+  public var forwardingSubstitutionMap: SubstitutionMap {
+    SubstitutionMap(bridged: bridged.getForwardingSubstitutionMap())
+  }
+
+  public func mapTypeIntoContext(_ type: AST.`Type`) -> AST.`Type` {
+    return AST.`Type`(bridged: bridged.mapTypeIntoContext(type.bridged))
+  }
+
   /// Returns true if the function is a definition and not only an external declaration.
   ///
   /// This is the case if the functioun contains a body, i.e. some basic blocks.

include/swift/SIL/SILBridging.h

@@ -462,6 +462,9 @@ struct BridgedFunction {
   BRIDGED_INLINE bool hasOwnership() const;
   BRIDGED_INLINE bool hasLoweredAddresses() const;
   SWIFT_IMPORT_UNSAFE BRIDGED_INLINE BridgedCanType getLoweredFunctionTypeInContext() const;
+  SWIFT_IMPORT_UNSAFE BRIDGED_INLINE BridgedGenericSignature getGenericSignature() const;
+  SWIFT_IMPORT_UNSAFE BRIDGED_INLINE BridgedSubstitutionMap getForwardingSubstitutionMap() const;
+  SWIFT_IMPORT_UNSAFE BRIDGED_INLINE BridgedASTType mapTypeIntoContext(BridgedASTType ty) const;
   SWIFT_IMPORT_UNSAFE BRIDGED_INLINE OptionalBridgedBasicBlock getFirstBlock() const;
   SWIFT_IMPORT_UNSAFE BRIDGED_INLINE OptionalBridgedBasicBlock getLastBlock() const;
   BRIDGED_INLINE SwiftInt getNumIndirectFormalResults() const;
@@ -491,6 +494,7 @@ struct BridgedFunction {
   BRIDGED_INLINE ThunkKind isThunk() const;
   BRIDGED_INLINE void setThunk(ThunkKind) const;
   BRIDGED_INLINE bool needsStackProtection() const;
+  BRIDGED_INLINE bool wasDeserializedCanonical() const;
   BRIDGED_INLINE void setNeedStackProtection(bool needSP) const;
   BRIDGED_INLINE void setIsPerformanceConstraint(bool isPerfConstraint) const;
   BRIDGED_INLINE bool isResilientNominalDecl(BridgedDeclObj decl) const;

include/swift/SIL/SILBridgingImpl.h

@@ -655,6 +655,18 @@ BridgedCanType BridgedFunction::getLoweredFunctionTypeInContext() const {
   return getFunction()->getLoweredFunctionTypeInContext(expansion);
 }
 
+BridgedGenericSignature BridgedFunction::getGenericSignature() const {
+  return {getFunction()->getGenericSignature().getPointer()};
+}
+
+BridgedSubstitutionMap BridgedFunction::getForwardingSubstitutionMap() const {
+  return {getFunction()->getForwardingSubstitutionMap()};
+}
+
+BridgedASTType BridgedFunction::mapTypeIntoContext(BridgedASTType ty) const {
+  return {getFunction()->mapTypeIntoContext(ty.unbridged()).getPointer()};
+}
+
 OptionalBridgedBasicBlock BridgedFunction::getFirstBlock() const {
   return {getFunction()->empty() ? nullptr : getFunction()->getEntryBlock()};
 }
@@ -781,6 +793,10 @@ bool BridgedFunction::needsStackProtection() const {
   return getFunction()->needsStackProtection();
 }
 
+bool BridgedFunction::wasDeserializedCanonical() const {
+  return getFunction()->wasDeserializedCanonical();
+}
+
 void BridgedFunction::setNeedStackProtection(bool needSP) const {
   getFunction()->setNeedStackProtection(needSP);
 }