IRGen: remove remaining (dead) code which deals with pinning

Author: eeckstein

lib/IRGen/GenHeap.cpp

@@ -1297,43 +1297,23 @@ llvm::Value *IRGenFunction::emitLoadRefcountedPtr(Address addr,
 }
 
 llvm::Value *IRGenFunction::
-emitIsUniqueCall(llvm::Value *value, SourceLoc loc, bool isNonNull,
-                 bool checkPinned) {
+emitIsUniqueCall(llvm::Value *value, SourceLoc loc, bool isNonNull) {
   llvm::Constant *fn;
   if (value->getType() == IGM.RefCountedPtrTy) {
-    if (checkPinned) {
-      if (isNonNull)
-        fn = IGM.getIsUniquelyReferencedOrPinned_nonNull_nativeFn();
-      else
-        fn = IGM.getIsUniquelyReferencedOrPinned_nativeFn();
-    }
-    else {
-      if (isNonNull)
-        fn = IGM.getIsUniquelyReferenced_nonNull_nativeFn();
-      else
-        fn = IGM.getIsUniquelyReferenced_nativeFn();
-    }
+    if (isNonNull)
+      fn = IGM.getIsUniquelyReferenced_nonNull_nativeFn();
+    else
+      fn = IGM.getIsUniquelyReferenced_nativeFn();
   } else if (value->getType() == IGM.UnknownRefCountedPtrTy) {
-    if (checkPinned) {
-      if (!isNonNull)
-        unimplemented(loc, "optional objc ref");
-
-      fn = IGM.getIsUniquelyReferencedOrPinnedNonObjC_nonNullFn();
-    }
-    else {
-      if (isNonNull)
-        fn = IGM.getIsUniquelyReferencedNonObjC_nonNullFn();
-      else
-        fn = IGM.getIsUniquelyReferencedNonObjCFn();
-    }
+    if (isNonNull)
+      fn = IGM.getIsUniquelyReferencedNonObjC_nonNullFn();
+    else
+      fn = IGM.getIsUniquelyReferencedNonObjCFn();
   } else if (value->getType() == IGM.BridgeObjectPtrTy) {
     if (!isNonNull)
       unimplemented(loc, "optional bridge ref");
 
-    if (checkPinned)
-      fn = IGM.getIsUniquelyReferencedOrPinnedNonObjC_nonNull_bridgeObjectFn();
-    else
-      fn = IGM.getIsUniquelyReferencedNonObjC_nonNull_bridgeObjectFn();
+    fn = IGM.getIsUniquelyReferencedNonObjC_nonNull_bridgeObjectFn();
   } else {
     llvm_unreachable("Unexpected LLVM type for a refcounted pointer.");
   }

lib/IRGen/IRGenFunction.h

@@ -430,7 +430,7 @@ class IRGenFunction {
   void emitErrorStrongRelease(llvm::Value *value);
 
   llvm::Value *emitIsUniqueCall(llvm::Value *value, SourceLoc loc,
-                                bool isNonNull, bool checkPinned);
+                                bool isNonNull);
 
   llvm::Value *emitIsEscapingClosureCall(llvm::Value *value, SourceLoc loc,
                                          unsigned verificationType);

lib/IRGen/IRGenSIL.cpp

@@ -3914,7 +3914,7 @@ static bool hasReferenceSemantics(IRGenSILFunction &IGF,
 }
 
 static llvm::Value *emitIsUnique(IRGenSILFunction &IGF, SILValue operand,
-                                 SourceLoc loc, bool checkPinned) {
+                                 SourceLoc loc) {
   if (!hasReferenceSemantics(IGF, operand->getType())) {
     IGF.emitTrap(/*EmitUnreachable=*/false);
     return llvm::UndefValue::get(IGF.IGM.Int1Ty);
@@ -3925,12 +3925,12 @@ static llvm::Value *emitIsUnique(IRGenSILFunction &IGF, SILValue operand,
     operTI.loadRefcountedPtr(IGF, loc, IGF.getLoweredAddress(operand));
 
   return
-    IGF.emitIsUniqueCall(ref.getValue(), loc, ref.isNonNull(), checkPinned);
+    IGF.emitIsUniqueCall(ref.getValue(), loc, ref.isNonNull());
 }
 
 void IRGenSILFunction::visitIsUniqueInst(swift::IsUniqueInst *i) {
   llvm::Value *result = emitIsUnique(*this, i->getOperand(),
-                                     i->getLoc().getSourceLoc(), false);
+                                     i->getLoc().getSourceLoc());
   Explosion out;
   out.add(result);
   setLoweredExplosion(i, out);