Try apply insts can also have guaranteed parameters.

This was a piece of code that was not updated with FullApplySite when try_apply
was added.

rdar://23505191

Author: gottesmm

lib/SILAnalysis/ARCAnalysis.cpp

@@ -577,26 +577,28 @@ valueHasARCDecrementOrCheckInInstructionRange(SILValue Op,
 bool
 swift::
 mayGuaranteedUseValue(SILInstruction *User, SILValue Ptr, AliasAnalysis *AA) {
-  // Only applies can require a guaranteed lifetime. If we don't have one, bail.
-  auto *AI = dyn_cast<ApplyInst>(User);
-  if (!AI)
+  // Only full apply sites can require a guaranteed lifetime. If we don't have
+  // one, bail.
+  if (!isa<FullApplySite>(User))
     return false;
 
-  // Ok, we have an apply. If the apply has no arguments, we don't need to worry
-  // about any guaranteed parameters.
-  if (!AI->getNumOperands())
+  FullApplySite FAS(User);
+
+  // Ok, we have a full apply site. If the apply has no arguments, we don't need
+  // to worry about any guaranteed parameters.
+  if (!FAS.getNumArguments())
     return false;
 
-  // Ok, we have an apply with arguments. Look at the function type and iterate
-  // through the function parameters. If any of the parameters are guaranteed,
-  // attempt to prove that the passed in parameter can not alias Ptr. If we
-  // fail, return true.
-  CanSILFunctionType FType = AI->getSubstCalleeType();
+  // Ok, we have an apply site with arguments. Look at the function type and
+  // iterate through the function parameters. If any of the parameters are
+  // guaranteed, attempt to prove that the passed in parameter can not alias
+  // Ptr. If we fail, return true.
+  CanSILFunctionType FType = FAS.getSubstCalleeType();
   auto Params = FType->getParameters();
   for (unsigned i : indices(Params)) {    
     if (!Params[i].isGuaranteed())
       continue;
-    SILValue Op = AI->getArgument(i);
+    SILValue Op = FAS.getArgument(i);
     for (int i = 0, e = Ptr->getNumTypes(); i < e; i++)
       if (!AA->isNoAlias(Op, SILValue(Ptr.getDef(), i)))
         return true;

test/SILPasses/globalarcopts.sil

@@ -52,9 +52,11 @@ enum Either<LTy, RTy> {
   case Right(RTy)
 }
 
-sil @guaranteed_use : $@convention(thin) (@guaranteed Builtin.NativeObject) -> ()
+sil [fragile] @guaranteed_use : $@convention(thin) (@guaranteed Builtin.NativeObject) -> ()
 
-sil @owned_return : $@convention(thin) () -> (@owned @box Builtin.Int32)
+sil [fragile] @owned_return : $@convention(thin) () -> (@owned @box Builtin.Int32)
+
+sil [fragile] @guaranteed_throwing_use : $@convention(thin) (@guaranteed Builtin.NativeObject) -> @error ErrorType
 
 /////////////////
 // Basic Tests //
@@ -1907,3 +1909,25 @@ bb0:
   %9999 = tuple()
   return %9999 : $()
 }
+
+// CHECK-LABEL: sil [fragile] @try_apply_test : $@convention(thin) (Builtin.NativeObject) -> @error ErrorType {
+// CHECK: bb0
+// CHECK: strong_retain
+// CHECK: bb1
+// CHECK: strong_release
+// CHECK: bb2
+// CHECK: strong_release
+sil [fragile] @try_apply_test : $@convention(thin) (Builtin.NativeObject) -> @error ErrorType {
+bb0(%0 : $Builtin.NativeObject):
+  strong_retain %0 : $Builtin.NativeObject
+  %1 = function_ref @guaranteed_throwing_use : $@convention(thin) (@guaranteed Builtin.NativeObject) -> @error ErrorType
+  try_apply %1(%0) : $@convention(thin) (@guaranteed Builtin.NativeObject) -> @error ErrorType, normal bb1, error bb2
+
+bb1(%2 : $()):
+  strong_release %0 : $Builtin.NativeObject
+  return undef : $()
+
+bb2(%3 : $ErrorType):
+  strong_release %0 : $Builtin.NativeObject
+  throw %3 : $ErrorType
+}

validation-test/stdlib/OpenCLSDKOverlay.swift

@@ -1,7 +1,6 @@
 // RUN: %target-run-simple-swift
 // REQUIRES: executable_test
 // REQUIRES: OS=macosx
-// REQUIRES: rdar23505191
 
 // Translated from standard OpenCL hello.c program