Merge pull request swiftlang#24895 from gottesmm/pr-cc3e82b30e1bd90538341f497c03daa8e7680288

[cast-opt] Change one pathway through the cast-optimizer to use highe…

Author: gottesmm

lib/SILOptimizer/Utils/CastOptimizer.cpp

@@ -91,7 +91,7 @@ convertObjectToLoadableBridgeableType(SILBuilderWithScope &builder,
   bool isConditional = dynamicCast.isConditional();
 
   SILValue load =
-      builder.createLoad(loc, src, LoadOwnershipQualifier::Unqualified);
+      builder.emitLoadValueOperation(loc, src, LoadOwnershipQualifier::Take);
 
   SILType silBridgedTy = *dynamicCast.getLoweredBridgedTargetObjectType();
 
@@ -295,25 +295,25 @@ CastOptimizer::optimizeBridgedObjCToSwiftCast(SILDynamicCastInst dynamicCast) {
   }
 
   // Emit a retain.
-  Builder.createRetainValue(Loc, srcOp, Builder.getDefaultAtomicity());
+  SILValue srcArg = Builder.emitCopyValueOperation(Loc, srcOp);
 
   SmallVector<SILValue, 1> Args;
   Args.push_back(InOutOptionalParam);
-  Args.push_back(srcOp);
+  Args.push_back(srcArg);
   Args.push_back(MetaTyVal);
 
   auto *AI = Builder.createApply(Loc, funcRef, subMap, Args);
 
   // If we have guaranteed normal arguments, insert the destroy.
   //
   // TODO: Is it safe to just eliminate the initial retain?
-  Builder.createReleaseValue(Loc, srcOp, Builder.getDefaultAtomicity());
+  Builder.emitDestroyValueOperation(Loc, srcArg);
 
   // If we have an unconditional_checked_cast_addr, return early. We do not need
   // to handle any conditional code.
   if (isa<UnconditionalCheckedCastAddrInst>(Inst)) {
     // Destroy the source value as unconditional_checked_cast_addr would.
-    Builder.createReleaseValue(Loc, srcOp, Builder.getDefaultAtomicity());
+    Builder.emitDestroyValueOperation(Loc, srcOp);
     eraseInstAction(Inst);
     return (newI) ? newI : AI;
   }

test/SILOptimizer/constant_propagation_ownership_objc.sil

@@ -0,0 +1,38 @@
+// RUN: %target-sil-opt -enable-sil-verify-all %s -diagnostic-constant-propagation | %FileCheck %s
+// RUN: %target-sil-opt -enable-sil-verify-all %s -performance-constant-propagation | %FileCheck %s
+
+// REQUIRES: objc_interop
+
+sil_stage canonical
+
+import Swift
+import Foundation
+import Builtin
+
+sil @$ss11AnyHashableVyABxcSHRzlufC : $@convention(method) <τ_0_0 where τ_0_0 : Hashable> (@in τ_0_0, @thin AnyHashable.Type) -> @out AnyHashable
+
+// CHECK-LABEL: sil [ossa] @bridged_cast_anyhashable : $@convention(method) (@guaranteed NSArray) -> @out Optional<AnyHashable> {
+// CHECK: [[FUNC:%.*]] = function_ref @$ss37_forceBridgeFromObjectiveC_bridgeableyx01_D5CTypeQz_xmts01_D11CBridgeableRzlF :
+// CHECK: apply [[FUNC]]<Array<AnyHashable>>(
+// CHECK: } // end sil function 'bridged_cast_anyhashable'
+sil [ossa] @bridged_cast_anyhashable : $@convention(method) (@guaranteed NSArray) -> @out Optional<AnyHashable> {
+bb0(%0 : $*Optional<AnyHashable>, %1 : @guaranteed $NSArray):
+  %3 = init_enum_data_addr %0 : $*Optional<AnyHashable>, #Optional.some!enumelt.1
+  %4 = metatype $@thin AnyHashable.Type
+  %5 = alloc_stack $NSArray
+  %6 = copy_value %1 : $NSArray
+  store %6 to [init] %5 : $*NSArray
+  %8 = alloc_stack $Array<AnyHashable>
+  unconditional_checked_cast_addr NSArray in %5 : $*NSArray to Array<AnyHashable> in %8 : $*Array<AnyHashable>
+  %10 = load [take] %8 : $*Array<AnyHashable>
+  %11 = alloc_stack $Array<AnyHashable>
+  store %10 to [init] %11 : $*Array<AnyHashable>
+  %13 = function_ref @$ss11AnyHashableVyABxcSHRzlufC : $@convention(method) <τ_0_0 where τ_0_0 : Hashable> (@in τ_0_0, @thin AnyHashable.Type) -> @out AnyHashable
+  %14 = apply %13<[AnyHashable]>(%3, %11, %4) : $@convention(method) <τ_0_0 where τ_0_0 : Hashable> (@in τ_0_0, @thin AnyHashable.Type) -> @out AnyHashable
+  dealloc_stack %11 : $*Array<AnyHashable>
+  dealloc_stack %8 : $*Array<AnyHashable>
+  dealloc_stack %5 : $*NSArray
+  inject_enum_addr %0 : $*Optional<AnyHashable>, #Optional.some!enumelt.1
+  %19 = tuple ()
+  return %19 : $()
+}