[CIR][CIRGen] Remove -clangir-disable-emit-cxx-default

This is a leftover from when ClangIR was initially focused on analysis
and could ignore default method generation. We now handle default
methods and should generate them in all cases. This fixes several bugs:
- Default methods weren't emitted when emitting LLVM, only CIR.
- Default methods only referenced by other default methods weren't
  emitted.

ghstack-source-id: baf60aa
ghstack-comment-id: 2513346334
Pull Request resolved: #1198

Author: smeenai

clang/include/clang/CIR/CIRGenerator.h

@@ -102,7 +102,6 @@ class CIRGenerator : public clang::ASTConsumer {
   bool verifyModule();
 
   void emitDeferredDecls();
-  void emitDefaultMethods();
 };
 
 } // namespace cir

clang/include/clang/Driver/Options.td

@@ -3062,10 +3062,6 @@ def clangir_disable_verifier : Flag<["-"], "clangir-disable-verifier">,
   Visibility<[ClangOption, CC1Option]>,
   HelpText<"ClangIR: Disable MLIR module verifier">,
   MarshallingInfoFlag<FrontendOpts<"ClangIRDisableCIRVerifier">>;
-def clangir_disable_emit_cxx_default : Flag<["-"], "clangir-disable-emit-cxx-default">,
-  Visibility<[ClangOption, CC1Option]>,
-  HelpText<"ClangIR: Disable emission of c++ default (compiler implemented) methods.">,
-  MarshallingInfoFlag<FrontendOpts<"ClangIRDisableEmitCXXDefault">>;
 def clangir_verify_diagnostics : Flag<["-"], "clangir-verify-diagnostics">,
   Visibility<[ClangOption, CC1Option]>,
   HelpText<"ClangIR: Enable diagnostic verification in MLIR, similar to clang's -verify">,

clang/include/clang/Frontend/FrontendOptions.h

@@ -433,9 +433,6 @@ class FrontendOptions {
   /// Disable Clang IR (CIR) verifier
   unsigned ClangIRDisableCIRVerifier : 1;
 
-  /// Disable ClangIR emission for CXX default (compiler generated methods).
-  unsigned ClangIRDisableEmitCXXDefault : 1;
-
   /// Enable diagnostic verification for CIR
   unsigned ClangIRVerifyDiags : 1;
 
@@ -655,10 +652,9 @@ class FrontendOptions {
         EmitPrettySymbolGraphs(false), GenReducedBMI(false),
         UseClangIRPipeline(false), ClangIRDirectLowering(false),
         ClangIRDisablePasses(false), ClangIRDisableCIRVerifier(false),
-        ClangIRDisableEmitCXXDefault(false), ClangIRLifetimeCheck(false),
-        ClangIRIdiomRecognizer(false), ClangIRLibOpt(false),
-        ClangIRAnalysisOnly(false), TimeTraceGranularity(500),
-        TimeTraceVerbose(false) {}
+        ClangIRLifetimeCheck(false), ClangIRIdiomRecognizer(false),
+        ClangIRLibOpt(false), ClangIRAnalysisOnly(false),
+        TimeTraceGranularity(500), TimeTraceVerbose(false) {}
 
   /// getInputKindForExtension - Return the appropriate input kind for a file
   /// extension. For example, "c" would return Language::C.

clang/lib/CIR/CodeGen/CIRGenModule.cpp

@@ -2786,10 +2786,7 @@ cir::FuncOp CIRGenModule::GetOrCreateCIRFunction(
            FD = FD->getPreviousDecl()) {
         if (isa<CXXRecordDecl>(FD->getLexicalDeclContext())) {
           if (FD->doesThisDeclarationHaveABody()) {
-            if (isDefaultedMethod(FD))
-              addDefaultMethodsToEmit(GD.getWithDecl(FD));
-            else
-              addDeferredDeclToEmit(GD.getWithDecl(FD));
+            addDeferredDeclToEmit(GD.getWithDecl(FD));
             break;
           }
         }
@@ -2939,13 +2936,6 @@ void CIRGenModule::emitDeferred(unsigned recursionLimit) {
   }
 }
 
-void CIRGenModule::emitDefaultMethods() {
-  // Differently from DeferredDeclsToEmit, there's no recurrent use of
-  // DefaultMethodsToEmit, so use it directly for emission.
-  for (auto &D : DefaultMethodsToEmit)
-    emitGlobalDecl(D);
-}
-
 mlir::IntegerAttr CIRGenModule::getSize(CharUnits size) {
   return builder.getSizeFromCharUnits(&getMLIRContext(), size);
 }

clang/lib/CIR/CodeGen/CIRGenModule.h

@@ -566,14 +566,6 @@ class CIRGenModule : public CIRGenTypeCache {
     DeferredDeclsToEmit.emplace_back(GD);
   }
 
-  // After HandleTranslation finishes, differently from DeferredDeclsToEmit,
-  // DefaultMethodsToEmit is only called after a set of CIR passes run. See
-  // addDefaultMethodsToEmit usage for examples.
-  std::vector<clang::GlobalDecl> DefaultMethodsToEmit;
-  void addDefaultMethodsToEmit(clang::GlobalDecl GD) {
-    DefaultMethodsToEmit.emplace_back(GD);
-  }
-
   std::pair<cir::FuncType, cir::FuncOp> getAddrAndTypeOfCXXStructor(
       clang::GlobalDecl GD, const CIRGenFunctionInfo *FnInfo = nullptr,
       cir::FuncType FnType = nullptr, bool Dontdefer = false,
@@ -718,9 +710,6 @@ class CIRGenModule : public CIRGenTypeCache {
   /// Helper for `emitDeferred` to apply actual codegen.
   void emitGlobalDecl(clang::GlobalDecl &D);
 
-  /// Build default methods not emitted before this point.
-  void emitDefaultMethods();
-
   const llvm::Triple &getTriple() const { return target.getTriple(); }
 
   // Finalize CIR code generation.

clang/lib/CIR/CodeGen/CIRGenerator.cpp

@@ -123,8 +123,6 @@ void CIRGenerator::HandleInlineFunctionDefinition(FunctionDecl *D) {
     CGM->AddDeferredUnusedCoverageMapping(D);
 }
 
-void CIRGenerator::emitDefaultMethods() { CGM->emitDefaultMethods(); }
-
 void CIRGenerator::emitDeferredDecls() {
   if (DeferredInlineMemberFuncDefs.empty())
     return;

clang/lib/CIR/FrontendAction/CIRGenAction.cpp

@@ -261,10 +261,6 @@ class CIRGenConsumer : public clang::ASTConsumer {
     case CIRGenAction::OutputType::EmitCIR:
     case CIRGenAction::OutputType::EmitCIRFlat:
       if (outputStream && mlirMod) {
-        // Emit remaining defaulted C++ methods
-        if (!feOptions.ClangIRDisableEmitCXXDefault)
-          gen->emitDefaultMethods();
-
         // FIXME: we cannot roundtrip prettyForm=true right now.
         mlir::OpPrintingFlags flags;
         flags.enableDebugInfo(/*enable=*/true, /*prettyForm=*/false);

clang/lib/Frontend/CompilerInvocation.cpp

@@ -3055,9 +3055,6 @@ static bool ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
   if (Args.hasArg(OPT_clangir_disable_verifier))
     Opts.ClangIRDisableCIRVerifier = true;
 
-  if (Args.hasArg(OPT_clangir_disable_emit_cxx_default))
-    Opts.ClangIRDisableEmitCXXDefault = true;
-
   if (Args.hasArg(OPT_clangir_verify_diagnostics))
     Opts.ClangIRVerifyDiags = true;
 

clang/test/CIR/CodeGen/assign-operator.cpp

@@ -1,9 +1,6 @@
 // RUN: %clang_cc1 -std=c++17 -mconstructor-aliases -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s -o %t.cir
 // RUN: FileCheck --input-file=%t.cir %s
 
-// RUN: %clang_cc1 -std=c++17 -mconstructor-aliases -triple x86_64-unknown-linux-gnu -fclangir -emit-cir -clangir-disable-emit-cxx-default %s -o %t-disable.cir
-// RUN: FileCheck --input-file=%t-disable.cir %s --check-prefix=DISABLE
-
 int strlen(char const *);
 
 struct String {
@@ -40,9 +37,6 @@ struct String {
   // CHECK:   cir.return
   // CHECK: }
 
-  // DISABLE: cir.func linkonce_odr @_ZN10StringViewC2ERK6String
-  // DISABLE-NEXT:   %0 = cir.alloca !cir.ptr<!ty_StringView>, !cir.ptr<!cir.ptr<!ty_StringView>>, ["this", init] {alignment = 8 : i64}
-
   // StringView::operator=(StringView&&)
   //
   // CHECK: cir.func linkonce_odr @_ZN10StringViewaSEOS_
@@ -61,9 +55,6 @@ struct String {
   // CHECK:   %8 = cir.load %2 : !cir.ptr<!cir.ptr<!ty_StringView>>
   // CHECK:   cir.return %8 : !cir.ptr<!ty_StringView>
   // CHECK: }
-
-  // DISABLE: cir.func private @_ZN10StringViewaSEOS_
-  // DISABLE-NEXT: cir.func @main()
 };
 
 struct StringView {
@@ -179,8 +170,6 @@ struct Trivial {
 // CHECK-NEXT:    %[[#OTHER_I_CAST:]] = cir.cast(bitcast, %[[#OTHER_I]] : !cir.ptr<!s32i>), !cir.ptr<!void>
 // CHECK-NEXT:    cir.libc.memcpy %[[#MEMCPY_SIZE]] bytes from %[[#OTHER_I_CAST]] to %[[#THIS_I_CAST]]
 // CHECK-NEXT:    cir.store %[[#THIS_LOAD]], %[[#RETVAL]]
-// CHECK-NEXT:    cir.br ^bb1
-// CHECK-NEXT:  ^bb1:
 // CHECK-NEXT:    %[[#RETVAL_LOAD:]] = cir.load %[[#RETVAL]]
 // CHECK-NEXT:    cir.return %[[#RETVAL_LOAD]]
 // CHECK-NEXT:  }

clang/test/CIR/CodeGen/coro-task.cpp

@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -fclangir -clangir-disable-emit-cxx-default -emit-cir %s -o %t.cir
+// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s -o %t.cir
 // RUN: FileCheck --input-file=%t.cir %s
 
 namespace std {

clang/test/CIR/CodeGen/default-methods.cpp

@@ -0,0 +1,24 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s -o %t.cir
+// RUN: FileCheck --input-file=%t.cir --check-prefix=CIR %s
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-llvm %s -o %t.ll
+// RUN: FileCheck --input-file=%t.ll --check-prefix=LLVM %s
+
+// We should emit and call both implicit operator= functions.
+struct S {
+  struct T {
+    int x;
+  } t;
+};
+
+// CIR-LABEL: cir.func linkonce_odr @_ZN1S1TaSERKS0_({{.*}} {
+// CIR-LABEL: cir.func linkonce_odr @_ZN1SaSERKS_(
+// CIR:         cir.call @_ZN1S1TaSERKS0_(
+// CIR-LABEL: cir.func @_Z1fR1SS0_(
+// CIR:         cir.call @_ZN1SaSERKS_(
+
+// LLVM-LABEL: define linkonce_odr ptr @_ZN1S1TaSERKS0_(
+// LLVM-LABEL: define linkonce_odr ptr @_ZN1SaSERKS_(
+// LLVM:         call ptr @_ZN1S1TaSERKS0_(
+// LLVM-LABEL: define dso_local void @_Z1fR1SS0_(
+// LLVM:         call ptr @_ZN1SaSERKS_(
+void f(S &s1, S &s2) { s1 = s2; }

clang/test/CIR/CodeGen/delete.cpp

@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -std=c++20 -fclangir -mconstructor-aliases -clangir-disable-emit-cxx-default -emit-cir %s -o %t.cir
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -std=c++20 -fclangir -mconstructor-aliases -emit-cir %s -o %t.cir
 // RUN: FileCheck --input-file=%t.cir %s
 
 typedef __typeof(sizeof(int)) size_t;
@@ -12,4 +12,4 @@ namespace test1 {
 
   // CHECK: %[[CONST:.*]] = cir.const #cir.int<4> : !u64i
   // CHECK: cir.call @_ZN5test11AdlEPvm({{.*}}, %[[CONST]])
-}
+}

clang/test/CIR/CodeGen/derived-to-base.cpp

@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -std=c++20 -fclangir -mconstructor-aliases -clangir-disable-emit-cxx-default -emit-cir %s -o %t.cir
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -std=c++20 -fclangir -mconstructor-aliases -emit-cir %s -o %t.cir
 // RUN: FileCheck --input-file=%t.cir %s
 
 typedef enum {

clang/test/CIR/CodeGen/dtors-scopes.cpp

@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -std=c++20 -fclangir -mconstructor-aliases -clangir-disable-emit-cxx-default -emit-cir %s -o %t.cir
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -std=c++20 -fclangir -mconstructor-aliases -emit-cir %s -o %t.cir
 // RUN: FileCheck --input-file=%t.cir %s
 // RUN: %clang_cc1 -triple arm64-apple-macosx14.0.0 -std=c++20 -fclangir -emit-cir %s -o %t2.cir
 // RUN: FileCheck --input-file=%t2.cir %s --check-prefix=DTOR_BODY
@@ -33,4 +33,4 @@ void dtor1() {
 
 // DTOR_BODY:   cir.call @_ZN1CD2Ev
 // DTOR_BODY:   cir.return
-// DTOR_BODY: }
+// DTOR_BODY: }

clang/test/CIR/CodeGen/dtors.cpp

@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -std=c++20 -fclangir -mconstructor-aliases -clangir-disable-emit-cxx-default -emit-cir %s -o %t.cir
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -std=c++20 -fclangir -mconstructor-aliases -emit-cir %s -o %t.cir
 // RUN: FileCheck --input-file=%t.cir %s
 
 enum class EFMode { Always, Verbose };

clang/test/CIR/CodeGen/libcall.cpp

@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -std=c++20 -fclangir -mconstructor-aliases -clangir-disable-emit-cxx-default -emit-cir %s -o %t.cir
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -std=c++20 -fclangir -mconstructor-aliases -emit-cir %s -o %t.cir
 // RUN: FileCheck --input-file=%t.cir %s
 
 typedef __builtin_va_list va_list;

clang/test/CIR/CodeGen/move.cpp

@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -fclangir -clangir-disable-emit-cxx-default -emit-cir %s -o %t.cir
+// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s -o %t.cir
 // RUN: FileCheck --input-file=%t.cir %s
 
 namespace std {

clang/test/CIR/CodeGen/new.cpp

@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -I%S/../Inputs -clangir-disable-emit-cxx-default -fclangir -emit-cir %s -o %t.cir
+// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -I%S/../Inputs -fclangir -emit-cir %s -o %t.cir
 // RUN: FileCheck --input-file=%t.cir %s
 
 #include "std-cxx.h"
@@ -55,4 +55,4 @@ class B {
 void t() {
   B b;
   b.construct(&b);
-}
+}

clang/test/CIR/CodeGen/nrvo.cpp

@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -I%S/../Inputs -clangir-disable-emit-cxx-default -fclangir -emit-cir %s -o %t.cir
+// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -I%S/../Inputs -fclangir -emit-cir %s -o %t.cir
 // RUN: FileCheck --input-file=%t.cir %s
 
 #include "std-cxx.h"

clang/test/CIR/CodeGen/rangefor.cpp

@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -I%S/../Inputs -clangir-disable-emit-cxx-default -fclangir -emit-cir %s -o %t.cir
+// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -I%S/../Inputs -fclangir -emit-cir %s -o %t.cir
 // RUN: FileCheck --input-file=%t.cir %s
 
 #include "std-cxx.h"

clang/test/CIR/CodeGen/std-array.cpp

@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -I%S/../Inputs -clangir-disable-emit-cxx-default -fclangir -emit-cir %s -o %t.cir
+// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -I%S/../Inputs -fclangir -emit-cir %s -o %t.cir
 // RUN: FileCheck --input-file=%t.cir %s
 
 #include "std-cxx.h"
@@ -14,4 +14,4 @@ void t() {
 // CHECK: {{.*}} = cir.cast(array_to_ptrdecay
 // CHECK: {{.*}} = cir.const #cir.int<9> : !u32i
 
-// CHECK: cir.call @_ZNSt5arrayIhLj9EE3endEv
+// CHECK: cir.call @_ZNSt5arrayIhLj9EE3endEv

clang/test/CIR/CodeGen/std-find.cpp

@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -I%S/../Inputs -clangir-disable-emit-cxx-default -fclangir -emit-cir %s -o %t.cir
+// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -I%S/../Inputs -fclangir -emit-cir %s -o %t.cir
 // RUN: FileCheck --input-file=%t.cir %s
 
 #include "std-cxx.h"
@@ -24,4 +24,4 @@ int test_find(unsigned char n = 3)
     // CHECK: cir.if %[[neq_cmp]]
 
     return num_found;
-}
+}

clang/test/CIR/CodeGen/vector.cpp

@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -I%S/../Inputs -clangir-disable-emit-cxx-default -fclangir -emit-cir %s -o %t.cir
+// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -I%S/../Inputs -fclangir -emit-cir %s -o %t.cir
 // RUN: FileCheck --input-file=%t.cir %s
 
 #include "std-cxx.h"
@@ -32,4 +32,4 @@ void m() {
   std::vector<unsigned long long> a;
   int i = 43;
   a.resize(i);
-}
+}

clang/test/CIR/CodeGen/vtable-rtti.cpp

@@ -1,6 +1,6 @@
-// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -std=c++20 -fclangir -mconstructor-aliases -clangir-disable-emit-cxx-default -emit-cir %s -o %t.cir
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -std=c++20 -fclangir -mconstructor-aliases -emit-cir %s -o %t.cir
 // RUN: FileCheck --input-file=%t.cir %s
-// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -std=c++20 -fclangir -fno-rtti -mconstructor-aliases -clangir-disable-emit-cxx-default -emit-cir %s -o %t2.cir
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -std=c++20 -fclangir -fno-rtti -mconstructor-aliases -emit-cir %s -o %t2.cir
 // RUN: FileCheck --input-file=%t2.cir --check-prefix=RTTI_DISABLED %s
 
 class A

clang/test/CIR/Transforms/lib-opt-find.cpp

@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -I%S/../Inputs -clangir-disable-emit-cxx-default -fclangir -fclangir-idiom-recognizer -fclangir-lib-opt -emit-cir %s -o %t.cir
+// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -I%S/../Inputs -fclangir -fclangir-idiom-recognizer -fclangir-lib-opt -emit-cir %s -o %t.cir
 // RUN: FileCheck --input-file=%t.cir %s
 
 #include "std-cxx.h"

clang/test/CIR/Transforms/lifetime-check-agg.cpp

@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -mconstructor-aliases -fclangir -clangir-disable-emit-cxx-default -fclangir-lifetime-check="history=all;remarks=all" -clangir-verify-diagnostics -emit-cir %s -o %t.cir
+// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -mconstructor-aliases -fclangir -fclangir-lifetime-check="history=all;remarks=all" -clangir-verify-diagnostics -emit-cir %s -o %t.cir
 // RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -mconstructor-aliases -fclangir-analysis-only -fclangir-lifetime-check="history=all;remarks=all" %s -clangir-verify-diagnostics -emit-obj -o /dev/null
 
 typedef enum SType {

clang/test/CIR/Transforms/lifetime-check-owner.cpp

@@ -1,14 +1,14 @@
 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -fclangir-lifetime-check="history=all;remarks=all;history_limit=1" -clangir-verify-diagnostics -emit-cir %s -o %t.cir
 
-struct [[gsl::Owner(int)]] MyIntOwner {
+struct [[gsl::Owner(int)]] MyIntOwner { // expected-remark {{pset => { fn_arg:0 }}}
   int val;
   MyIntOwner(int v) : val(v) {}
   void changeInt(int i);
   int &operator*();
   int read() const;
 };
 
-struct [[gsl::Pointer(int)]] MyIntPointer {
+struct [[gsl::Pointer(int)]] MyIntPointer { // expected-remark {{pset => { fn_arg:0 }}}
   int *ptr;
   MyIntPointer(int *p = nullptr) : ptr(p) {}
   MyIntPointer(const MyIntOwner &);
@@ -68,4 +68,4 @@ void yolo4() {
   p.read(); // expected-warning {{use of invalid pointer 'p'}}
   // expected-remark@-1 {{pset => { invalid }}}
   q.read(); // expected-remark {{pset => { o1__1' }}}
-}
+}

clang/test/CIR/Transforms/lifetime-check-range-for-vector.cpp

@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -I%S/../Inputs -mconstructor-aliases -fclangir -clangir-disable-emit-cxx-default -fclangir-lifetime-check="history=all" -fclangir-skip-system-headers -clangir-verify-diagnostics -emit-cir %s -o %t.cir
+// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -I%S/../Inputs -mconstructor-aliases -fclangir -fclangir-lifetime-check="history=all" -fclangir-skip-system-headers -clangir-verify-diagnostics -emit-cir %s -o %t.cir
 
 #include "std-cxx.h"
 
@@ -25,4 +25,4 @@ void swappy(unsigned c) {
   for (unsigned i = 0; i < c; i++) {
     images2[i] = {INFO_ENUM_1};
   }
-}
+}

clang/test/CIR/Transforms/lifetime-check-string.cpp

@@ -1,8 +1,8 @@
-// RUN: %clang_cc1 -std=c++17 -triple x86_64-unknown-linux-gnu -mconstructor-aliases -fclangir -clangir-disable-emit-cxx-default -fclangir-lifetime-check="history=all;remarks=all" -clangir-verify-diagnostics -emit-cir %s -o %t.cir
+// RUN: %clang_cc1 -std=c++17 -triple x86_64-unknown-linux-gnu -mconstructor-aliases -fclangir -fclangir-lifetime-check="history=all;remarks=all" -clangir-verify-diagnostics -emit-cir %s -o %t.cir
 
 int strlen(char const *);
 
-struct [[gsl::Owner(char *)]] String {
+struct [[gsl::Owner(char *)]] String { // expected-remark {{pset => { fn_arg:0 }}}
   long size;
   long capacity;
   const char *storage;
@@ -11,7 +11,7 @@ struct [[gsl::Owner(char *)]] String {
   String(char const *s) : size{strlen(s)}, capacity{size}, storage{s} {}
 };
 
-struct [[gsl::Pointer(int)]] StringView {
+struct [[gsl::Pointer(int)]] StringView { // expected-remark {{pset => { fn_arg:0 }}}
   long size;
   const char *storage;
   char operator[](int);
@@ -84,4 +84,4 @@ void sv3() {
   cout << name; // expected-note {{invalidated by non-const use of owner type}}
   cout << sv; // expected-warning {{passing invalid pointer 'sv'}}
   // expected-remark@-1 {{pset => { invalid }}}
-}
+}