Merge pull request swiftlang#37301 from hborla/wrapped-parameter-miscompile

[SILGen] Fix a miscompile when emitting the application of a wrapped parameter

Author: hborla

lib/SILGen/SILGenExpr.cpp

@@ -5253,7 +5253,7 @@ RValue RValueEmitter::visitPropertyWrapperValuePlaceholderExpr(
 RValue RValueEmitter::visitAppliedPropertyWrapperExpr(
     AppliedPropertyWrapperExpr *E, SGFContext C) {
   auto *param = const_cast<ParamDecl *>(E->getParamDecl());
-  auto argument = visit(E->getValue(), C);
+  auto argument = visit(E->getValue());
   SILDeclRef::Kind initKind;
   switch (E->getValueKind()) {
   case swift::AppliedPropertyWrapperExpr::ValueKind::WrappedValue:

test/SILGen/property_wrapper_parameter.swift

@@ -1,4 +1,7 @@
-// RUN: %target-swift-emit-silgen %s | %FileCheck %s
+// RUN: %empty-directory(%t)
+// RUN: %target-swift-frontend -emit-module -o %t -enable-library-evolution %S/Inputs/def_structA.swift
+// RUN: %target-swift-emit-silgen %s -I %t | %FileCheck %s
+import def_structA
 
 public struct Projection<T> {
   public var wrappedValue: T
@@ -283,3 +286,18 @@ func testNonmutatingSetterSynthesis(@NonmutatingSetter value: Int) {
   // CHECK-LABEL: sil private [ossa] @$s26property_wrapper_parameter30testNonmutatingSetterSynthesis5valueyAA0eF0VySiG_tFSiAFcfu_SiAFcfU_ACL_Sivs : $@convention(thin) (Int, NonmutatingSetter<Int>) -> ()
   // CHECK: function_ref @$s26property_wrapper_parameter17NonmutatingSetterV12wrappedValuexvs : $@convention(method) <τ_0_0> (@in τ_0_0, NonmutatingSetter<τ_0_0>) -> ()
 }
+
+// CHECK-LABEL: sil hidden [ossa] @$s26property_wrapper_parameter38testImplicitWrapperWithResilientStructyyF : $@convention(thin) () -> ()
+func testImplicitWrapperWithResilientStruct() {
+  let _: (ProjectionWrapper<A>) -> Void = { $value in }
+
+  // implicit closure #1 in testImplicitWrapperWithResilientStruct()
+  // CHECK-LABEL: sil private [ossa] @$s26property_wrapper_parameter38testImplicitWrapperWithResilientStructyyFyAA010ProjectionF0Vy11def_structA1AVGcfu_ : $@convention(thin) (@in_guaranteed ProjectionWrapper<A>) -> ()
+  // CHECK: [[P:%.*]] = alloc_stack $ProjectionWrapper<A>
+  // CHECK: copy_addr %0 to [initialization] [[P]]
+  // CHECK: [[I:%.*]] = function_ref @$s26property_wrapper_parameter38testImplicitWrapperWithResilientStructyyFyAA010ProjectionF0Vy11def_structA1AVGcfu_yAHcfU_6$valueL_AHvpfW : $@convention(thin) (@in ProjectionWrapper<A>) -> @out ProjectionWrapper<A>
+  // CHECK: apply [[I]]({{.*}}, [[P]]) : $@convention(thin) (@in ProjectionWrapper<A>) -> @out ProjectionWrapper<A>
+
+  // property wrapper init from projected value of $value #1 in closure #1 in implicit closure #1 in testImplicitWrapperWithResilientStruct()
+  // CHECK-LABEL: sil private [ossa] @$s26property_wrapper_parameter38testImplicitWrapperWithResilientStructyyFyAA010ProjectionF0Vy11def_structA1AVGcfu_yAHcfU_6$valueL_AHvpfW : $@convention(thin) (@in ProjectionWrapper<A>) -> @out ProjectionWrapper<A>
+}