https://github.com/adams381 updated 
https://github.com/llvm/llvm-project/pull/219057

>From d0fc4bfbaf5fac95b557942502927a0e38b9d5fb Mon Sep 17 00:00:00 2001
From: Adam Smith <[email protected]>
Date: Wed, 26 Aug 2026 15:08:03 -0700
Subject: [PATCH] [CIR] Drop call-conv-lowering opt-out from OpenACC declare
 tests

The six OpenACC declare tests opted out of CallConvLowering because the pass
did not handle parameters of an empty or tag class.  CallConvLowering handles
them now, so they can run the pass and pin what it produces.

Assisted-by: Cursor / claude-opus-5
---
 .../test/CIR/CodeGenOpenACC/declare-copy.cpp  | 28 +++++++------------
 .../CIR/CodeGenOpenACC/declare-copyin.cpp     | 22 +++++----------
 .../CIR/CodeGenOpenACC/declare-copyout.cpp    | 28 +++++++------------
 .../CIR/CodeGenOpenACC/declare-create.cpp     | 22 +++++----------
 .../CodeGenOpenACC/declare-deviceresident.cpp | 22 +++++----------
 .../CIR/CodeGenOpenACC/declare-present.cpp    | 24 ++++++----------
 6 files changed, 49 insertions(+), 97 deletions(-)

diff --git a/clang/test/CIR/CodeGenOpenACC/declare-copy.cpp 
b/clang/test/CIR/CodeGenOpenACC/declare-copy.cpp
index 2af67028e829d..b2a8c75ca9b40 100644
--- a/clang/test/CIR/CodeGenOpenACC/declare-copy.cpp
+++ b/clang/test/CIR/CodeGenOpenACC/declare-copy.cpp
@@ -1,6 +1,4 @@
-// TODO(cir): drop -fno-clangir-call-conv-lowering once CallConvLowering
-// supports parameters of an empty or tag class.
-// RUN: %clang_cc1 -fopenacc -Wno-openacc-self-if-potential-conflict -emit-cir 
-fclangir -fno-clangir-call-conv-lowering %s -o - | FileCheck %s
+// RUN: %clang_cc1 -fopenacc -Wno-openacc-self-if-potential-conflict -emit-cir 
-fclangir %s -o - | FileCheck %s
 
 struct HasSideEffects {
   HasSideEffects();
@@ -13,9 +11,8 @@ struct Struct {
   static const int StaticMemInt;
 
   void MemFunc1(HasSideEffects ArgHSE, int ArgInt, HasSideEffects *ArgHSEPtr) {
-    // CHECK: cir.func {{.*}}MemFunc1{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !rec_HasSideEffects{{.*}}, 
%[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
+    // CHECK: cir.func {{.*}}MemFunc1{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !cir.ptr<!rec_HasSideEffects> 
{llvm.align = 1 : i64, llvm.byref = !rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: 
!s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: !cir.ptr<!rec_HasSideEffects>{{.*}})
     // CHECK-NEXT: cir.alloca "this"
-    // CHECK-NEXT: %[[ARG_HSE_ALLOCA:.*]] = cir.alloca "ArgHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_ALLOCA:.*]] = cir.alloca "ArgInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: %[[ARG_HSE_PTR_ALLOCA:.*]] = cir.alloca "ArgHSEPtr" {{.*}} 
: !cir.ptr<!cir.ptr<!rec_HasSideEffects>>
     // CHECK-NEXT: %[[LOC_HSE_ALLOCA:.*]] = cir.alloca "LocalHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
@@ -24,7 +21,6 @@ struct Struct {
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
-    // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.load
 
     HasSideEffects LocalHSE;
@@ -33,7 +29,7 @@ struct Struct {
     int LocalInt;
 
 #pragma acc declare copy(always:ArgHSE, ArgInt, LocalHSE, LocalInt, 
ArgHSEPtr[1:1], LocalHSEArr[1:1])
-    // CHECK: %[[ARG_HSE_COPYIN:.*]] = acc.copyin varPtr(%[[ARG_HSE_ALLOCA]] : 
!cir.ptr<!rec_HasSideEffects>) dataClause(acc_copy) name("ArgHSE") <modifiers = 
"always"> -> !cir.ptr<!rec_HasSideEffects>
+    // CHECK: %[[ARG_HSE_COPYIN:.*]] = acc.copyin varPtr(%[[ARG_HSE]] : 
!cir.ptr<!rec_HasSideEffects>) dataClause(acc_copy) name("ArgHSE") <modifiers = 
"always"> -> !cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_COPYIN:.*]] = acc.copyin 
varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>) dataClause(acc_copy) 
name("ArgInt") <modifiers = "always"> -> !cir.ptr<!s32i>
     // CHECK-NEXT: %[[LOC_HSE_COPYIN:.*]] = acc.copyin 
varPtr(%[[LOC_HSE_ALLOCA]] : !cir.ptr<!rec_HasSideEffects>) 
dataClause(acc_copy) name("LocalHSE") <modifiers = "always"> -> 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[LOC_INT_COPYIN:.*]] = acc.copyin 
varPtr(%[[LOC_INT_ALLOCA]] : !cir.ptr<!s32i>) dataClause(acc_copy) 
name("LocalInt") <modifiers = "always"> -> !cir.ptr<!s32i>
@@ -59,7 +55,7 @@ struct Struct {
     // CHECK-NEXT:   cir.yield
     // CHECK-NEXT: } cleanup normal {
     // CHECK-NEXT:   acc.declare_exit token(%[[ENTER]]) 
dataOperands(%[[ARG_HSE_COPYIN]], %[[ARG_INT_COPYIN]], %[[LOC_HSE_COPYIN]], 
%[[LOC_INT_COPYIN]], %[[ARG_HSE_PTR_COPYIN]], %[[LOC_HSE_ARR_COPYIN]] : 
!cir.ptr<!rec_HasSideEffects>, !cir.ptr<!s32i>, !cir.ptr<!rec_HasSideEffects>, 
!cir.ptr<!s32i>, !cir.ptr<!cir.ptr<!rec_HasSideEffects>>, 
!cir.ptr<!cir.array<!rec_HasSideEffects x 5>>)
-    // CHECK-NEXT: acc.copyout accPtr(%[[ARG_HSE_COPYIN]] : 
!cir.ptr<!rec_HasSideEffects>) to varPtr(%[[ARG_HSE_ALLOCA]] : 
!cir.ptr<!rec_HasSideEffects>) dataClause(acc_copy) name("ArgHSE") <modifiers = 
"always">
+    // CHECK-NEXT: acc.copyout accPtr(%[[ARG_HSE_COPYIN]] : 
!cir.ptr<!rec_HasSideEffects>) to varPtr(%[[ARG_HSE]] : 
!cir.ptr<!rec_HasSideEffects>) dataClause(acc_copy) name("ArgHSE") <modifiers = 
"always">
     // CHECK-NEXT: acc.copyout accPtr(%[[ARG_INT_COPYIN]] : !cir.ptr<!s32i>) 
to varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>) dataClause(acc_copy) 
name("ArgInt") <modifiers = "always">
     // CHECK-NEXT: acc.copyout accPtr(%[[LOC_HSE_COPYIN]] : 
!cir.ptr<!rec_HasSideEffects>) to varPtr(%[[LOC_HSE_ALLOCA]] : 
!cir.ptr<!rec_HasSideEffects>) dataClause(acc_copy) name("LocalHSE") <modifiers 
= "always">
     // CHECK-NEXT: acc.copyout accPtr(%[[LOC_INT_COPYIN]] : !cir.ptr<!s32i>) 
to varPtr(%[[LOC_INT_ALLOCA]] : !cir.ptr<!s32i>) dataClause(acc_copy) 
name("LocalInt") <modifiers = "always">
@@ -77,9 +73,8 @@ void use() {
 }
 
 void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, HasSideEffects 
*ArgHSEPtr) {
-    // CHECK: cir.func {{.*}}MemFunc2{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !rec_HasSideEffects{{.*}}, 
%[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
+    // CHECK: cir.func {{.*}}MemFunc2{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !cir.ptr<!rec_HasSideEffects> 
{llvm.align = 1 : i64, llvm.byref = !rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: 
!s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: !cir.ptr<!rec_HasSideEffects>{{.*}})
     // CHECK-NEXT: cir.alloca "this"
-    // CHECK-NEXT: %[[ARG_HSE_ALLOCA:.*]] = cir.alloca "ArgHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_ALLOCA:.*]] = cir.alloca "ArgInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: %[[ARG_HSE_PTR_ALLOCA:.*]] = cir.alloca "ArgHSEPtr" {{.*}} 
: !cir.ptr<!cir.ptr<!rec_HasSideEffects>>
     // CHECK-NEXT: %[[LOC_HSE_ALLOCA:.*]] = cir.alloca "LocalHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
@@ -88,7 +83,6 @@ void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, 
HasSideEffects *ArgHSEP
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
-    // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.load
     HasSideEffects LocalHSE;
     // CHECK-NEXT: cir.call{{.*}} : (!cir.ptr<!rec_HasSideEffects>{{.*}}) -> ()
@@ -98,7 +92,7 @@ void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, 
HasSideEffects *ArgHSEP
     // CHECK: }
     int LocalInt;
 #pragma acc declare copy(alwaysin:ArgHSE, ArgInt, ArgHSEPtr[1:1])
-    // CHECK: %[[ARG_HSE_COPYIN:.*]] = acc.copyin varPtr(%[[ARG_HSE_ALLOCA]] : 
!cir.ptr<!rec_HasSideEffects>) dataClause(acc_copy) name("ArgHSE") <modifiers = 
alwaysin> -> !cir.ptr<!rec_HasSideEffects>
+    // CHECK: %[[ARG_HSE_COPYIN:.*]] = acc.copyin varPtr(%[[ARG_HSE]] : 
!cir.ptr<!rec_HasSideEffects>) dataClause(acc_copy) name("ArgHSE") <modifiers = 
alwaysin> -> !cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_COPYIN:.*]] = acc.copyin 
varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>) dataClause(acc_copy) 
name("ArgInt") <modifiers = alwaysin> -> !cir.ptr<!s32i>
     // CHECK-NEXT: %[[ONE:.*]] = cir.const #cir.int<1> : !s32i
     // CHECK-NEXT: %[[LB:.*]] = cir.builtin_int_cast %[[ONE]] : !s32i -> si32
@@ -138,7 +132,7 @@ void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, 
HasSideEffects *ArgHSEP
 
     // CHECK-NEXT: } cleanup normal {
     // CHECK-NEXT:   acc.declare_exit token(%[[ENTER1]]) 
dataOperands(%[[ARG_HSE_COPYIN]], %[[ARG_INT_COPYIN]], %[[ARG_HSE_PTR_COPYIN]] 
: !cir.ptr<!rec_HasSideEffects>, !cir.ptr<!s32i>, 
!cir.ptr<!cir.ptr<!rec_HasSideEffects>>)
-    // CHECK-NEXT: acc.copyout accPtr(%[[ARG_HSE_COPYIN]] : 
!cir.ptr<!rec_HasSideEffects>) to varPtr(%[[ARG_HSE_ALLOCA]] : 
!cir.ptr<!rec_HasSideEffects>) dataClause(acc_copy) name("ArgHSE") <modifiers = 
alwaysin>
+    // CHECK-NEXT: acc.copyout accPtr(%[[ARG_HSE_COPYIN]] : 
!cir.ptr<!rec_HasSideEffects>) to varPtr(%[[ARG_HSE]] : 
!cir.ptr<!rec_HasSideEffects>) dataClause(acc_copy) name("ArgHSE") <modifiers = 
alwaysin>
     // CHECK-NEXT: acc.copyout accPtr(%[[ARG_INT_COPYIN]] : !cir.ptr<!s32i>) 
to varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>) dataClause(acc_copy) 
name("ArgInt") <modifiers = alwaysin>
     // CHECK-NEXT: acc.copyout accPtr(%[[ARG_HSE_PTR_COPYIN]] : 
!cir.ptr<!cir.ptr<!rec_HasSideEffects>>) bounds(%[[BOUND1]]) to 
varPtr(%[[ARG_HSE_PTR_ALLOCA]] : !cir.ptr<!cir.ptr<!rec_HasSideEffects>>) 
dataClause(acc_copy) name("ArgHSEPtr[1:1]") <modifiers = alwaysin>
     // CHECK-NEXT:   cir.yield
@@ -148,8 +142,7 @@ void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, 
HasSideEffects *ArgHSEP
 extern "C" void do_thing();
 
 extern "C" void NormalFunc(HasSideEffects ArgHSE, int ArgInt, HasSideEffects 
*ArgHSEPtr) {
-    // CHECK: cir.func {{.*}}NormalFunc(%[[ARG_HSE:.*]]: 
!rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
-    // CHECK-NEXT: %[[ARG_HSE_ALLOCA:.*]] = cir.alloca "ArgHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
+    // CHECK: cir.func {{.*}}NormalFunc(%[[ARG_HSE:.*]]: 
!cir.ptr<!rec_HasSideEffects> {llvm.align = 1 : i64, llvm.byref = 
!rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
     // CHECK-NEXT: %[[ARG_INT_ALLOCA:.*]] = cir.alloca "ArgInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: %[[ARG_HSE_PTR_ALLOCA:.*]] = cir.alloca "ArgHSEPtr" {{.*}} 
: !cir.ptr<!cir.ptr<!rec_HasSideEffects>>
     // CHECK-NEXT: %[[LOC_HSE_ALLOCA:.*]] = cir.alloca "LocalHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
@@ -157,7 +150,6 @@ extern "C" void NormalFunc(HasSideEffects ArgHSE, int 
ArgInt, HasSideEffects *Ar
     // CHECK-NEXT: %[[LOC_INT_ALLOCA:.*]] = cir.alloca "LocalInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
-    // CHECK-NEXT: cir.store
     HasSideEffects LocalHSE;
     // CHECK-NEXT: cir.call{{.*}} : (!cir.ptr<!rec_HasSideEffects>{{.*}}) -> ()
     HasSideEffects LocalHSEArr[5];
@@ -166,7 +158,7 @@ extern "C" void NormalFunc(HasSideEffects ArgHSE, int 
ArgInt, HasSideEffects *Ar
     // CHECK: }
     int LocalInt;
 #pragma acc declare copy(capture:ArgHSE, ArgInt, ArgHSEPtr[1:1])
-    // CHECK: %[[ARG_HSE_COPYIN:.*]] = acc.copyin varPtr(%[[ARG_HSE_ALLOCA]] : 
!cir.ptr<!rec_HasSideEffects>) dataClause(acc_copy) name("ArgHSE") <modifiers = 
capture> -> !cir.ptr<!rec_HasSideEffects>
+    // CHECK: %[[ARG_HSE_COPYIN:.*]] = acc.copyin varPtr(%[[ARG_HSE]] : 
!cir.ptr<!rec_HasSideEffects>) dataClause(acc_copy) name("ArgHSE") <modifiers = 
capture> -> !cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_COPYIN:.*]] = acc.copyin 
varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>) dataClause(acc_copy) 
name("ArgInt") <modifiers = capture> -> !cir.ptr<!s32i>
     // CHECK-NEXT: %[[ONE:.*]] = cir.const #cir.int<1> : !s32i
     // CHECK-NEXT: %[[LB:.*]] = cir.builtin_int_cast %[[ONE]] : !s32i -> si32
@@ -214,7 +206,7 @@ extern "C" void NormalFunc(HasSideEffects ArgHSE, int 
ArgInt, HasSideEffects *Ar
     // CHECK-NEXT: cir.yield
     // CHECK-NEXT: cleanup normal {
     // CHECK-NEXT:   acc.declare_exit token(%[[ENTER1]]) 
dataOperands(%[[ARG_HSE_COPYIN]], %[[ARG_INT_COPYIN]], %[[ARG_HSE_PTR_COPYIN]] 
: !cir.ptr<!rec_HasSideEffects>, !cir.ptr<!s32i>, 
!cir.ptr<!cir.ptr<!rec_HasSideEffects>>)
-    // CHECK-NEXT: acc.copyout accPtr(%[[ARG_HSE_COPYIN]] : 
!cir.ptr<!rec_HasSideEffects>) to varPtr(%[[ARG_HSE_ALLOCA]] : 
!cir.ptr<!rec_HasSideEffects>) dataClause(acc_copy) name("ArgHSE") <modifiers = 
capture>
+    // CHECK-NEXT: acc.copyout accPtr(%[[ARG_HSE_COPYIN]] : 
!cir.ptr<!rec_HasSideEffects>) to varPtr(%[[ARG_HSE]] : 
!cir.ptr<!rec_HasSideEffects>) dataClause(acc_copy) name("ArgHSE") <modifiers = 
capture>
     // CHECK-NEXT: acc.copyout accPtr(%[[ARG_INT_COPYIN]] : !cir.ptr<!s32i>) 
to varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>) dataClause(acc_copy) 
name("ArgInt") <modifiers = capture>
     // CHECK-NEXT: acc.copyout accPtr(%[[ARG_HSE_PTR_COPYIN]] : 
!cir.ptr<!cir.ptr<!rec_HasSideEffects>>) bounds(%[[BOUND1]]) to 
varPtr(%[[ARG_HSE_PTR_ALLOCA]] : !cir.ptr<!cir.ptr<!rec_HasSideEffects>>) 
dataClause(acc_copy) name("ArgHSEPtr[1:1]") <modifiers = capture>
     // CHECK-NEXT:   cir.yield
diff --git a/clang/test/CIR/CodeGenOpenACC/declare-copyin.cpp 
b/clang/test/CIR/CodeGenOpenACC/declare-copyin.cpp
index b5c8bc90e56d7..8a924d85bd85e 100644
--- a/clang/test/CIR/CodeGenOpenACC/declare-copyin.cpp
+++ b/clang/test/CIR/CodeGenOpenACC/declare-copyin.cpp
@@ -1,6 +1,4 @@
-// TODO(cir): drop -fno-clangir-call-conv-lowering once CallConvLowering
-// supports parameters of an empty or tag class.
-// RUN: %clang_cc1 -fopenacc -Wno-openacc-self-if-potential-conflict -emit-cir 
-fclangir -fno-clangir-call-conv-lowering %s -o - | FileCheck %s
+// RUN: %clang_cc1 -fopenacc -Wno-openacc-self-if-potential-conflict -emit-cir 
-fclangir %s -o - | FileCheck %s
 
 struct HasSideEffects {
   HasSideEffects();
@@ -261,9 +259,8 @@ struct Struct {
 // CHECK-NEXT: }
 
   void MemFunc1(HasSideEffects ArgHSE, int ArgInt, HasSideEffects *ArgHSEPtr) {
-    // CHECK: cir.func {{.*}}MemFunc1{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !rec_HasSideEffects{{.*}}, 
%[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
+    // CHECK: cir.func {{.*}}MemFunc1{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !cir.ptr<!rec_HasSideEffects> 
{llvm.align = 1 : i64, llvm.byref = !rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: 
!s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: !cir.ptr<!rec_HasSideEffects>{{.*}})
     // CHECK-NEXT: cir.alloca{{.*}}"this"
-    // CHECK-NEXT: %[[ARG_HSE_ALLOCA:.*]] = cir.alloca "ArgHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_ALLOCA:.*]] = cir.alloca "ArgInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: %[[ARG_HSE_PTR_ALLOCA:.*]] = cir.alloca "ArgHSEPtr" {{.*}} 
: !cir.ptr<!cir.ptr<!rec_HasSideEffects>>
     // CHECK-NEXT: %[[LOC_HSE_ALLOCA:.*]] = cir.alloca "LocalHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
@@ -272,7 +269,6 @@ struct Struct {
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
-    // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.load
 
     HasSideEffects LocalHSE;
@@ -281,7 +277,7 @@ struct Struct {
     int LocalInt;
 
 #pragma acc declare copyin(always:ArgHSE, ArgInt, LocalHSE, LocalInt, 
ArgHSEPtr[1:1], LocalHSEArr[1:1])
-    // CHECK: %[[ARG_HSE_COPYIN:.*]] = acc.copyin varPtr(%[[ARG_HSE_ALLOCA]] : 
!cir.ptr<!rec_HasSideEffects>) name("ArgHSE") <modifiers = "always"> -> 
!cir.ptr<!rec_HasSideEffects>
+    // CHECK: %[[ARG_HSE_COPYIN:.*]] = acc.copyin varPtr(%[[ARG_HSE]] : 
!cir.ptr<!rec_HasSideEffects>) name("ArgHSE") <modifiers = "always"> -> 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_COPYIN:.*]] = acc.copyin 
varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>)  name("ArgInt") <modifiers = 
"always"> -> !cir.ptr<!s32i>
     // CHECK-NEXT: %[[LOC_HSE_COPYIN:.*]] = acc.copyin 
varPtr(%[[LOC_HSE_ALLOCA]] : !cir.ptr<!rec_HasSideEffects>)  name("LocalHSE") 
<modifiers = "always"> -> !cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[LOC_INT_COPYIN:.*]] = acc.copyin 
varPtr(%[[LOC_INT_ALLOCA]] : !cir.ptr<!s32i>)  name("LocalInt") <modifiers = 
"always"> -> !cir.ptr<!s32i>
@@ -325,9 +321,8 @@ void use() {
 }
 
 void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, HasSideEffects 
*ArgHSEPtr) {
-    // CHECK: cir.func {{.*}}MemFunc2{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !rec_HasSideEffects{{.*}}, 
%[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
+    // CHECK: cir.func {{.*}}MemFunc2{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !cir.ptr<!rec_HasSideEffects> 
{llvm.align = 1 : i64, llvm.byref = !rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: 
!s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: !cir.ptr<!rec_HasSideEffects>{{.*}})
     // CHECK-NEXT: cir.alloca{{.*}}"this"
-    // CHECK-NEXT: %[[ARG_HSE_ALLOCA:.*]] = cir.alloca "ArgHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_ALLOCA:.*]] = cir.alloca "ArgInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: %[[ARG_HSE_PTR_ALLOCA:.*]] = cir.alloca "ArgHSEPtr" {{.*}} 
: !cir.ptr<!cir.ptr<!rec_HasSideEffects>>
     // CHECK-NEXT: %[[LOC_HSE_ALLOCA:.*]] = cir.alloca "LocalHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
@@ -336,7 +331,6 @@ void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, 
HasSideEffects *ArgHSEP
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
-    // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.load
     HasSideEffects LocalHSE;
     // CHECK-NEXT: cir.call{{.*}} : (!cir.ptr<!rec_HasSideEffects>{{.*}}) -> ()
@@ -346,7 +340,7 @@ void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, 
HasSideEffects *ArgHSEP
     // CHECK: }
     int LocalInt;
 #pragma acc declare copyin(alwaysin:ArgHSE, ArgInt, ArgHSEPtr[1:1])
-    // CHECK: %[[ARG_HSE_COPYIN:.*]] = acc.copyin varPtr(%[[ARG_HSE_ALLOCA]] : 
!cir.ptr<!rec_HasSideEffects>) name("ArgHSE") <modifiers = alwaysin> -> 
!cir.ptr<!rec_HasSideEffects>
+    // CHECK: %[[ARG_HSE_COPYIN:.*]] = acc.copyin varPtr(%[[ARG_HSE]] : 
!cir.ptr<!rec_HasSideEffects>) name("ArgHSE") <modifiers = alwaysin> -> 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_COPYIN:.*]] = acc.copyin 
varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>) name("ArgInt") <modifiers = 
alwaysin> -> !cir.ptr<!s32i>
     // CHECK-NEXT: %[[ONE:.*]] = cir.const #cir.int<1> : !s32i
     // CHECK-NEXT: %[[LB:.*]] = cir.builtin_int_cast %[[ONE]] : !s32i -> si32
@@ -396,8 +390,7 @@ void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, 
HasSideEffects *ArgHSEP
 extern "C" void do_thing();
 
 extern "C" void NormalFunc(HasSideEffects ArgHSE, int ArgInt, HasSideEffects 
*ArgHSEPtr) {
-    // CHECK: cir.func {{.*}}NormalFunc(%[[ARG_HSE:.*]]: 
!rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
-    // CHECK-NEXT: %[[ARG_HSE_ALLOCA:.*]] = cir.alloca "ArgHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
+    // CHECK: cir.func {{.*}}NormalFunc(%[[ARG_HSE:.*]]: 
!cir.ptr<!rec_HasSideEffects> {llvm.align = 1 : i64, llvm.byref = 
!rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
     // CHECK-NEXT: %[[ARG_INT_ALLOCA:.*]] = cir.alloca "ArgInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: %[[ARG_HSE_PTR_ALLOCA:.*]] = cir.alloca "ArgHSEPtr" {{.*}} 
: !cir.ptr<!cir.ptr<!rec_HasSideEffects>>
     // CHECK-NEXT: %[[LOC_HSE_ALLOCA:.*]] = cir.alloca "LocalHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
@@ -405,7 +398,6 @@ extern "C" void NormalFunc(HasSideEffects ArgHSE, int 
ArgInt, HasSideEffects *Ar
     // CHECK-NEXT: %[[LOC_INT_ALLOCA:.*]] = cir.alloca "LocalInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
-    // CHECK-NEXT: cir.store
     HasSideEffects LocalHSE;
     // CHECK-NEXT: cir.call{{.*}} : (!cir.ptr<!rec_HasSideEffects>{{.*}}) -> ()
     HasSideEffects LocalHSEArr[5];
@@ -414,7 +406,7 @@ extern "C" void NormalFunc(HasSideEffects ArgHSE, int 
ArgInt, HasSideEffects *Ar
     // CHECK: }
     int LocalInt;
 #pragma acc declare copyin(always:ArgHSE, ArgInt, ArgHSEPtr[1:1])
-    // CHECK: %[[ARG_HSE_COPYIN:.*]] = acc.copyin varPtr(%[[ARG_HSE_ALLOCA]] : 
!cir.ptr<!rec_HasSideEffects>) name("ArgHSE") <modifiers = "always"> -> 
!cir.ptr<!rec_HasSideEffects>
+    // CHECK: %[[ARG_HSE_COPYIN:.*]] = acc.copyin varPtr(%[[ARG_HSE]] : 
!cir.ptr<!rec_HasSideEffects>) name("ArgHSE") <modifiers = "always"> -> 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_COPYIN:.*]] = acc.copyin 
varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>) name("ArgInt") <modifiers = 
"always"> -> !cir.ptr<!s32i>
     // CHECK-NEXT: %[[ONE:.*]] = cir.const #cir.int<1> : !s32i
     // CHECK-NEXT: %[[LB:.*]] = cir.builtin_int_cast %[[ONE]] : !s32i -> si32
diff --git a/clang/test/CIR/CodeGenOpenACC/declare-copyout.cpp 
b/clang/test/CIR/CodeGenOpenACC/declare-copyout.cpp
index 09399cb65dc48..3b627c1ea010d 100644
--- a/clang/test/CIR/CodeGenOpenACC/declare-copyout.cpp
+++ b/clang/test/CIR/CodeGenOpenACC/declare-copyout.cpp
@@ -1,6 +1,4 @@
-// TODO(cir): drop -fno-clangir-call-conv-lowering once CallConvLowering
-// supports parameters of an empty or tag class.
-// RUN: %clang_cc1 -fopenacc -Wno-openacc-self-if-potential-conflict -emit-cir 
-fclangir -fno-clangir-call-conv-lowering %s -o - | FileCheck %s
+// RUN: %clang_cc1 -fopenacc -Wno-openacc-self-if-potential-conflict -emit-cir 
-fclangir %s -o - | FileCheck %s
 
 struct HasSideEffects {
   HasSideEffects();
@@ -13,9 +11,8 @@ struct Struct {
   static const int StaticMemInt;
 
   void MemFunc1(HasSideEffects ArgHSE, int ArgInt, HasSideEffects *ArgHSEPtr) {
-    // CHECK: cir.func {{.*}}MemFunc1{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !rec_HasSideEffects{{.*}}, 
%[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
+    // CHECK: cir.func {{.*}}MemFunc1{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !cir.ptr<!rec_HasSideEffects> 
{llvm.align = 1 : i64, llvm.byref = !rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: 
!s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: !cir.ptr<!rec_HasSideEffects>{{.*}})
     // CHECK-NEXT: cir.alloca{{.*}}"this"
-    // CHECK-NEXT: %[[ARG_HSE_ALLOCA:.*]] = cir.alloca "ArgHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_ALLOCA:.*]] = cir.alloca "ArgInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: %[[ARG_HSE_PTR_ALLOCA:.*]] = cir.alloca "ArgHSEPtr" {{.*}} 
: !cir.ptr<!cir.ptr<!rec_HasSideEffects>>
     // CHECK-NEXT: %[[LOC_HSE_ALLOCA:.*]] = cir.alloca "LocalHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
@@ -24,7 +21,6 @@ struct Struct {
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
-    // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.load
 
     HasSideEffects LocalHSE;
@@ -33,7 +29,7 @@ struct Struct {
     int LocalInt;
 
 #pragma acc declare copyout(always:ArgHSE, ArgInt, LocalHSE, LocalInt, 
ArgHSEPtr[1:1], LocalHSEArr[1:1])
-    // CHECK: %[[ARG_HSE_CREATE:.*]] = acc.create varPtr(%[[ARG_HSE_ALLOCA]] : 
!cir.ptr<!rec_HasSideEffects>) dataClause(acc_copyout) name("ArgHSE") 
<modifiers = "always"> -> !cir.ptr<!rec_HasSideEffects>
+    // CHECK: %[[ARG_HSE_CREATE:.*]] = acc.create varPtr(%[[ARG_HSE]] : 
!cir.ptr<!rec_HasSideEffects>) dataClause(acc_copyout) name("ArgHSE") 
<modifiers = "always"> -> !cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_CREATE:.*]] = acc.create 
varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>) dataClause(acc_copyout) 
name("ArgInt") <modifiers = "always"> -> !cir.ptr<!s32i>
     // CHECK-NEXT: %[[LOC_HSE_CREATE:.*]] = acc.create 
varPtr(%[[LOC_HSE_ALLOCA]] : !cir.ptr<!rec_HasSideEffects>) 
dataClause(acc_copyout) name("LocalHSE") <modifiers = "always"> -> 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[LOC_INT_CREATE:.*]] = acc.create 
varPtr(%[[LOC_INT_ALLOCA]] : !cir.ptr<!s32i>) dataClause(acc_copyout) 
name("LocalInt") <modifiers = "always"> -> !cir.ptr<!s32i>
@@ -59,7 +55,7 @@ struct Struct {
     // CHECK-NEXT:   cir.yield
     // CHECK-NEXT: } cleanup normal {
     // CHECK-NEXT:   acc.declare_exit token(%[[ENTER]]) 
dataOperands(%[[ARG_HSE_CREATE]], %[[ARG_INT_CREATE]], %[[LOC_HSE_CREATE]], 
%[[LOC_INT_CREATE]], %[[ARG_HSE_PTR_CREATE]], %[[LOC_HSE_ARR_CREATE]] : 
!cir.ptr<!rec_HasSideEffects>, !cir.ptr<!s32i>, !cir.ptr<!rec_HasSideEffects>, 
!cir.ptr<!s32i>, !cir.ptr<!cir.ptr<!rec_HasSideEffects>>, 
!cir.ptr<!cir.array<!rec_HasSideEffects x 5>>)
-    // CHECK-NEXT: acc.copyout accPtr(%[[ARG_HSE_CREATE]] : 
!cir.ptr<!rec_HasSideEffects>) to varPtr(%[[ARG_HSE_ALLOCA]] : 
!cir.ptr<!rec_HasSideEffects>) name("ArgHSE") <modifiers = "always">
+    // CHECK-NEXT: acc.copyout accPtr(%[[ARG_HSE_CREATE]] : 
!cir.ptr<!rec_HasSideEffects>) to varPtr(%[[ARG_HSE]] : 
!cir.ptr<!rec_HasSideEffects>) name("ArgHSE") <modifiers = "always">
     // CHECK-NEXT: acc.copyout accPtr(%[[ARG_INT_CREATE]] : !cir.ptr<!s32i>) 
to varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>) name("ArgInt") <modifiers = 
"always">
     // CHECK-NEXT: acc.copyout accPtr(%[[LOC_HSE_CREATE]] : 
!cir.ptr<!rec_HasSideEffects>) to varPtr(%[[LOC_HSE_ALLOCA]] : 
!cir.ptr<!rec_HasSideEffects>) name("LocalHSE") <modifiers = "always">
     // CHECK-NEXT: acc.copyout accPtr(%[[LOC_INT_CREATE]] : !cir.ptr<!s32i>) 
to varPtr(%[[LOC_INT_ALLOCA]] : !cir.ptr<!s32i>) name("LocalInt") <modifiers = 
"always">
@@ -77,9 +73,8 @@ void use() {
 }
 
 void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, HasSideEffects 
*ArgHSEPtr) {
-    // CHECK: cir.func {{.*}}MemFunc2{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !rec_HasSideEffects{{.*}}, 
%[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
+    // CHECK: cir.func {{.*}}MemFunc2{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !cir.ptr<!rec_HasSideEffects> 
{llvm.align = 1 : i64, llvm.byref = !rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: 
!s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: !cir.ptr<!rec_HasSideEffects>{{.*}})
     // CHECK-NEXT: cir.alloca{{.*}}"this"
-    // CHECK-NEXT: %[[ARG_HSE_ALLOCA:.*]] = cir.alloca "ArgHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_ALLOCA:.*]] = cir.alloca "ArgInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: %[[ARG_HSE_PTR_ALLOCA:.*]] = cir.alloca "ArgHSEPtr" {{.*}} 
: !cir.ptr<!cir.ptr<!rec_HasSideEffects>>
     // CHECK-NEXT: %[[LOC_HSE_ALLOCA:.*]] = cir.alloca "LocalHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
@@ -88,7 +83,6 @@ void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, 
HasSideEffects *ArgHSEP
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
-    // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.load
     HasSideEffects LocalHSE;
     // CHECK-NEXT: cir.call{{.*}} : (!cir.ptr<!rec_HasSideEffects>{{.*}}) -> ()
@@ -98,7 +92,7 @@ void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, 
HasSideEffects *ArgHSEP
     // CHECK: }
     int LocalInt;
 #pragma acc declare copyout(alwaysout:ArgHSE, ArgInt, ArgHSEPtr[1:1])
-    // CHECK: %[[ARG_HSE_CREATE:.*]] = acc.create varPtr(%[[ARG_HSE_ALLOCA]] : 
!cir.ptr<!rec_HasSideEffects>) dataClause(acc_copyout) name("ArgHSE") 
<modifiers = alwaysout> -> !cir.ptr<!rec_HasSideEffects>
+    // CHECK: %[[ARG_HSE_CREATE:.*]] = acc.create varPtr(%[[ARG_HSE]] : 
!cir.ptr<!rec_HasSideEffects>) dataClause(acc_copyout) name("ArgHSE") 
<modifiers = alwaysout> -> !cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_CREATE:.*]] = acc.create 
varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>) dataClause(acc_copyout) 
name("ArgInt") <modifiers = alwaysout> -> !cir.ptr<!s32i>
     // CHECK-NEXT: %[[ONE:.*]] = cir.const #cir.int<1> : !s32i
     // CHECK-NEXT: %[[LB:.*]] = cir.builtin_int_cast %[[ONE]] : !s32i -> si32
@@ -138,7 +132,7 @@ void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, 
HasSideEffects *ArgHSEP
 
     // CHECK-NEXT: cleanup normal {
     // CHECK-NEXT:   acc.declare_exit token(%[[ENTER1]]) 
dataOperands(%[[ARG_HSE_CREATE]], %[[ARG_INT_CREATE]], %[[ARG_HSE_PTR_CREATE]] 
: !cir.ptr<!rec_HasSideEffects>, !cir.ptr<!s32i>, 
!cir.ptr<!cir.ptr<!rec_HasSideEffects>>)
-    // CHECK-NEXT: acc.copyout accPtr(%[[ARG_HSE_CREATE]] : 
!cir.ptr<!rec_HasSideEffects>) to varPtr(%[[ARG_HSE_ALLOCA]] : 
!cir.ptr<!rec_HasSideEffects>) name("ArgHSE") <modifiers = alwaysout>
+    // CHECK-NEXT: acc.copyout accPtr(%[[ARG_HSE_CREATE]] : 
!cir.ptr<!rec_HasSideEffects>) to varPtr(%[[ARG_HSE]] : 
!cir.ptr<!rec_HasSideEffects>) name("ArgHSE") <modifiers = alwaysout>
     // CHECK-NEXT: acc.copyout accPtr(%[[ARG_INT_CREATE]] : !cir.ptr<!s32i>) 
to varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>) name("ArgInt") <modifiers = 
alwaysout>
     // CHECK-NEXT: acc.copyout accPtr(%[[ARG_HSE_PTR_CREATE]] : 
!cir.ptr<!cir.ptr<!rec_HasSideEffects>>) bounds(%[[BOUND1]]) to 
varPtr(%[[ARG_HSE_PTR_ALLOCA]] : !cir.ptr<!cir.ptr<!rec_HasSideEffects>>) 
name("ArgHSEPtr[1:1]") <modifiers = alwaysout>
     // CHECK-NEXT:   cir.yield
@@ -148,8 +142,7 @@ void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, 
HasSideEffects *ArgHSEP
 extern "C" void do_thing();
 
 extern "C" void NormalFunc(HasSideEffects ArgHSE, int ArgInt, HasSideEffects 
*ArgHSEPtr) {
-    // CHECK: cir.func {{.*}}NormalFunc(%[[ARG_HSE:.*]]: 
!rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
-    // CHECK-NEXT: %[[ARG_HSE_ALLOCA:.*]] = cir.alloca "ArgHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
+    // CHECK: cir.func {{.*}}NormalFunc(%[[ARG_HSE:.*]]: 
!cir.ptr<!rec_HasSideEffects> {llvm.align = 1 : i64, llvm.byref = 
!rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
     // CHECK-NEXT: %[[ARG_INT_ALLOCA:.*]] = cir.alloca "ArgInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: %[[ARG_HSE_PTR_ALLOCA:.*]] = cir.alloca "ArgHSEPtr" {{.*}} 
: !cir.ptr<!cir.ptr<!rec_HasSideEffects>>
     // CHECK-NEXT: %[[LOC_HSE_ALLOCA:.*]] = cir.alloca "LocalHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
@@ -157,7 +150,6 @@ extern "C" void NormalFunc(HasSideEffects ArgHSE, int 
ArgInt, HasSideEffects *Ar
     // CHECK-NEXT: %[[LOC_INT_ALLOCA:.*]] = cir.alloca "LocalInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
-    // CHECK-NEXT: cir.store
     HasSideEffects LocalHSE;
     // CHECK-NEXT: cir.call{{.*}} : (!cir.ptr<!rec_HasSideEffects>{{.*}}) -> ()
     HasSideEffects LocalHSEArr[5];
@@ -166,7 +158,7 @@ extern "C" void NormalFunc(HasSideEffects ArgHSE, int 
ArgInt, HasSideEffects *Ar
     // CHECK: }
     int LocalInt;
 #pragma acc declare copyout(always:ArgHSE, ArgInt, ArgHSEPtr[1:1])
-    // CHECK: %[[ARG_HSE_CREATE:.*]] = acc.create varPtr(%[[ARG_HSE_ALLOCA]] : 
!cir.ptr<!rec_HasSideEffects>) dataClause(acc_copyout) name("ArgHSE") 
<modifiers = "always"> -> !cir.ptr<!rec_HasSideEffects>
+    // CHECK: %[[ARG_HSE_CREATE:.*]] = acc.create varPtr(%[[ARG_HSE]] : 
!cir.ptr<!rec_HasSideEffects>) dataClause(acc_copyout) name("ArgHSE") 
<modifiers = "always"> -> !cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_CREATE:.*]] = acc.create 
varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>) dataClause(acc_copyout) 
name("ArgInt") <modifiers = "always"> -> !cir.ptr<!s32i>
     // CHECK-NEXT: %[[ONE:.*]] = cir.const #cir.int<1> : !s32i
     // CHECK-NEXT: %[[LB:.*]] = cir.builtin_int_cast %[[ONE]] : !s32i -> si32
@@ -216,7 +208,7 @@ extern "C" void NormalFunc(HasSideEffects ArgHSE, int 
ArgInt, HasSideEffects *Ar
     // CHECK-NEXT: } cleanup normal {
     // CHECK-NEXT:   acc.declare_exit token(%[[ENTER1]]) 
dataOperands(%[[ARG_HSE_CREATE]], %[[ARG_INT_CREATE]], %[[ARG_HSE_PTR_CREATE]] 
: !cir.ptr<!rec_HasSideEffects>, !cir.ptr<!s32i>, 
!cir.ptr<!cir.ptr<!rec_HasSideEffects>>)
 
-    // CHECK-NEXT: acc.copyout accPtr(%[[ARG_HSE_CREATE]] : 
!cir.ptr<!rec_HasSideEffects>) to varPtr(%[[ARG_HSE_ALLOCA]] : 
!cir.ptr<!rec_HasSideEffects>) name("ArgHSE") <modifiers = "always">
+    // CHECK-NEXT: acc.copyout accPtr(%[[ARG_HSE_CREATE]] : 
!cir.ptr<!rec_HasSideEffects>) to varPtr(%[[ARG_HSE]] : 
!cir.ptr<!rec_HasSideEffects>) name("ArgHSE") <modifiers = "always">
     // CHECK-NEXT: acc.copyout accPtr(%[[ARG_INT_CREATE]] : !cir.ptr<!s32i>) 
to varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>) name("ArgInt") <modifiers = 
"always">
     // CHECK-NEXT: acc.copyout accPtr(%[[ARG_HSE_PTR_CREATE]] : 
!cir.ptr<!cir.ptr<!rec_HasSideEffects>>) bounds(%[[BOUND1]]) to 
varPtr(%[[ARG_HSE_PTR_ALLOCA]] : !cir.ptr<!cir.ptr<!rec_HasSideEffects>>) 
name("ArgHSEPtr[1:1]") <modifiers = "always">
 }
diff --git a/clang/test/CIR/CodeGenOpenACC/declare-create.cpp 
b/clang/test/CIR/CodeGenOpenACC/declare-create.cpp
index d0a6ace2fe4bf..f6816c660090f 100644
--- a/clang/test/CIR/CodeGenOpenACC/declare-create.cpp
+++ b/clang/test/CIR/CodeGenOpenACC/declare-create.cpp
@@ -1,6 +1,4 @@
-// TODO(cir): drop -fno-clangir-call-conv-lowering once CallConvLowering
-// supports parameters of an empty or tag class.
-// RUN: %clang_cc1 -fopenacc -Wno-openacc-self-if-potential-conflict -emit-cir 
-fclangir -fno-clangir-call-conv-lowering %s -o - | FileCheck %s
+// RUN: %clang_cc1 -fopenacc -Wno-openacc-self-if-potential-conflict -emit-cir 
-fclangir %s -o - | FileCheck %s
 
 struct HasSideEffects {
   HasSideEffects();
@@ -262,9 +260,8 @@ struct Struct {
 // CHECK-NEXT: }
 
   void MemFunc1(HasSideEffects ArgHSE, int ArgInt, HasSideEffects *ArgHSEPtr) {
-    // CHECK: cir.func {{.*}}MemFunc1{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !rec_HasSideEffects{{.*}}, 
%[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
+    // CHECK: cir.func {{.*}}MemFunc1{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !cir.ptr<!rec_HasSideEffects> 
{llvm.align = 1 : i64, llvm.byref = !rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: 
!s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: !cir.ptr<!rec_HasSideEffects>{{.*}})
     // CHECK-NEXT: cir.alloca{{.*}}"this"
-    // CHECK-NEXT: %[[ARG_HSE_ALLOCA:.*]] = cir.alloca "ArgHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_ALLOCA:.*]] = cir.alloca "ArgInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: %[[ARG_HSE_PTR_ALLOCA:.*]] = cir.alloca "ArgHSEPtr" {{.*}} 
: !cir.ptr<!cir.ptr<!rec_HasSideEffects>>
     // CHECK-NEXT: %[[LOC_HSE_ALLOCA:.*]] = cir.alloca "LocalHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
@@ -273,7 +270,6 @@ struct Struct {
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
-    // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.load
 
     HasSideEffects LocalHSE;
@@ -282,7 +278,7 @@ struct Struct {
     int LocalInt;
 
 #pragma acc declare create(zero:ArgHSE, ArgInt, LocalHSE, LocalInt, 
ArgHSEPtr[1:1], LocalHSEArr[1:1])
-    // CHECK: %[[ARG_HSE_CREATE:.*]] = acc.create varPtr(%[[ARG_HSE_ALLOCA]] : 
!cir.ptr<!rec_HasSideEffects>) name("ArgHSE") <modifiers = zero> -> 
!cir.ptr<!rec_HasSideEffects>
+    // CHECK: %[[ARG_HSE_CREATE:.*]] = acc.create varPtr(%[[ARG_HSE]] : 
!cir.ptr<!rec_HasSideEffects>) name("ArgHSE") <modifiers = zero> -> 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_CREATE:.*]] = acc.create 
varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>) name("ArgInt") <modifiers = zero> 
-> !cir.ptr<!s32i>
     // CHECK-NEXT: %[[LOC_HSE_CREATE:.*]] = acc.create 
varPtr(%[[LOC_HSE_ALLOCA]] : !cir.ptr<!rec_HasSideEffects>) name("LocalHSE") 
<modifiers = zero> -> !cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[LOC_INT_CREATE:.*]] = acc.create 
varPtr(%[[LOC_INT_ALLOCA]] : !cir.ptr<!s32i>) name("LocalInt") <modifiers = 
zero> -> !cir.ptr<!s32i>
@@ -326,9 +322,8 @@ void use() {
 }
 
 void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, HasSideEffects 
*ArgHSEPtr) {
-    // CHECK: cir.func {{.*}}MemFunc2{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !rec_HasSideEffects{{.*}}, 
%[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
+    // CHECK: cir.func {{.*}}MemFunc2{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !cir.ptr<!rec_HasSideEffects> 
{llvm.align = 1 : i64, llvm.byref = !rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: 
!s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: !cir.ptr<!rec_HasSideEffects>{{.*}})
     // CHECK-NEXT: cir.alloca{{.*}}"this"
-    // CHECK-NEXT: %[[ARG_HSE_ALLOCA:.*]] = cir.alloca "ArgHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_ALLOCA:.*]] = cir.alloca "ArgInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: %[[ARG_HSE_PTR_ALLOCA:.*]] = cir.alloca "ArgHSEPtr" {{.*}} 
: !cir.ptr<!cir.ptr<!rec_HasSideEffects>>
     // CHECK-NEXT: %[[LOC_HSE_ALLOCA:.*]] = cir.alloca "LocalHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
@@ -337,7 +332,6 @@ void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, 
HasSideEffects *ArgHSEP
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
-    // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.load
     HasSideEffects LocalHSE;
     // CHECK-NEXT: cir.call{{.*}} : (!cir.ptr<!rec_HasSideEffects>{{.*}}) -> ()
@@ -347,7 +341,7 @@ void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, 
HasSideEffects *ArgHSEP
     // CHECK: }
     int LocalInt;
 #pragma acc declare create(zero:ArgHSE, ArgInt, ArgHSEPtr[1:1])
-    // CHECK: %[[ARG_HSE_CREATE:.*]] = acc.create varPtr(%[[ARG_HSE_ALLOCA]] : 
!cir.ptr<!rec_HasSideEffects>) name("ArgHSE") <modifiers = zero> -> 
!cir.ptr<!rec_HasSideEffects>
+    // CHECK: %[[ARG_HSE_CREATE:.*]] = acc.create varPtr(%[[ARG_HSE]] : 
!cir.ptr<!rec_HasSideEffects>) name("ArgHSE") <modifiers = zero> -> 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_CREATE:.*]] = acc.create 
varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>) name("ArgInt") <modifiers = zero> 
-> !cir.ptr<!s32i>
     // CHECK-NEXT: %[[ONE:.*]] = cir.const #cir.int<1> : !s32i
     // CHECK-NEXT: %[[LB:.*]] = cir.builtin_int_cast %[[ONE]] : !s32i -> si32
@@ -397,8 +391,7 @@ void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, 
HasSideEffects *ArgHSEP
 extern "C" void do_thing();
 
 extern "C" void NormalFunc(HasSideEffects ArgHSE, int ArgInt, HasSideEffects 
*ArgHSEPtr) {
-    // CHECK: cir.func {{.*}}NormalFunc(%[[ARG_HSE:.*]]: 
!rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
-    // CHECK-NEXT: %[[ARG_HSE_ALLOCA:.*]] = cir.alloca "ArgHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
+    // CHECK: cir.func {{.*}}NormalFunc(%[[ARG_HSE:.*]]: 
!cir.ptr<!rec_HasSideEffects> {llvm.align = 1 : i64, llvm.byref = 
!rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
     // CHECK-NEXT: %[[ARG_INT_ALLOCA:.*]] = cir.alloca "ArgInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: %[[ARG_HSE_PTR_ALLOCA:.*]] = cir.alloca "ArgHSEPtr" {{.*}} 
: !cir.ptr<!cir.ptr<!rec_HasSideEffects>>
     // CHECK-NEXT: %[[LOC_HSE_ALLOCA:.*]] = cir.alloca "LocalHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
@@ -406,7 +399,6 @@ extern "C" void NormalFunc(HasSideEffects ArgHSE, int 
ArgInt, HasSideEffects *Ar
     // CHECK-NEXT: %[[LOC_INT_ALLOCA:.*]] = cir.alloca "LocalInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
-    // CHECK-NEXT: cir.store
     HasSideEffects LocalHSE;
     // CHECK-NEXT: cir.call{{.*}} : (!cir.ptr<!rec_HasSideEffects>{{.*}}) -> ()
     HasSideEffects LocalHSEArr[5];
@@ -415,7 +407,7 @@ extern "C" void NormalFunc(HasSideEffects ArgHSE, int 
ArgInt, HasSideEffects *Ar
     // CHECK: }
     int LocalInt;
 #pragma acc declare create(zero:ArgHSE, ArgInt, ArgHSEPtr[1:1])
-    // CHECK: %[[ARG_HSE_CREATE:.*]] = acc.create varPtr(%[[ARG_HSE_ALLOCA]] : 
!cir.ptr<!rec_HasSideEffects>) name("ArgHSE") <modifiers = zero> -> 
!cir.ptr<!rec_HasSideEffects>
+    // CHECK: %[[ARG_HSE_CREATE:.*]] = acc.create varPtr(%[[ARG_HSE]] : 
!cir.ptr<!rec_HasSideEffects>) name("ArgHSE") <modifiers = zero> -> 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_CREATE:.*]] = acc.create 
varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>) name("ArgInt") <modifiers = zero> 
-> !cir.ptr<!s32i>
     // CHECK-NEXT: %[[ONE:.*]] = cir.const #cir.int<1> : !s32i
     // CHECK-NEXT: %[[LB:.*]] = cir.builtin_int_cast %[[ONE]] : !s32i -> si32
diff --git a/clang/test/CIR/CodeGenOpenACC/declare-deviceresident.cpp 
b/clang/test/CIR/CodeGenOpenACC/declare-deviceresident.cpp
index c39aa269feff6..7ebecb0fdac86 100644
--- a/clang/test/CIR/CodeGenOpenACC/declare-deviceresident.cpp
+++ b/clang/test/CIR/CodeGenOpenACC/declare-deviceresident.cpp
@@ -1,6 +1,4 @@
-// TODO(cir): drop -fno-clangir-call-conv-lowering once CallConvLowering
-// supports parameters of an empty or tag class.
-// RUN: %clang_cc1 -fopenacc -Wno-openacc-self-if-potential-conflict -emit-cir 
-fclangir -fno-clangir-call-conv-lowering %s -o - | FileCheck %s
+// RUN: %clang_cc1 -fopenacc -Wno-openacc-self-if-potential-conflict -emit-cir 
-fclangir %s -o - | FileCheck %s
 
 struct HasSideEffects {
   HasSideEffects();
@@ -261,9 +259,8 @@ struct Struct {
 // CHECK-NEXT: }
 
   void MemFunc1(HasSideEffects ArgHSE, int ArgInt, HasSideEffects *ArgHSEPtr) {
-    // CHECK: cir.func {{.*}}MemFunc1{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !rec_HasSideEffects{{.*}}, 
%[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
+    // CHECK: cir.func {{.*}}MemFunc1{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !cir.ptr<!rec_HasSideEffects> 
{llvm.align = 1 : i64, llvm.byref = !rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: 
!s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: !cir.ptr<!rec_HasSideEffects>{{.*}})
     // CHECK-NEXT: cir.alloca{{.*}}"this"
-    // CHECK-NEXT: %[[ARG_HSE_ALLOCA:.*]] = cir.alloca "ArgHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_ALLOCA:.*]] = cir.alloca "ArgInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: %[[ARG_HSE_PTR_ALLOCA:.*]] = cir.alloca "ArgHSEPtr" {{.*}} 
: !cir.ptr<!cir.ptr<!rec_HasSideEffects>>
     // CHECK-NEXT: %[[LOC_HSE_ALLOCA:.*]] = cir.alloca "LocalHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
@@ -272,7 +269,6 @@ struct Struct {
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
-    // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.load
 
     HasSideEffects LocalHSE;
@@ -281,7 +277,7 @@ struct Struct {
     int LocalInt;
 
 #pragma acc declare device_resident(ArgHSE, ArgInt, LocalHSE, LocalInt, 
ArgHSEPtr[1:1], LocalHSEArr[1:1])
-    // CHECK: %[[ARG_HSE_DEV_RES:.*]] = acc.declare_device_resident 
varPtr(%[[ARG_HSE_ALLOCA]] : !cir.ptr<!rec_HasSideEffects>) name("ArgHSE") -> 
!cir.ptr<!rec_HasSideEffects>
+    // CHECK: %[[ARG_HSE_DEV_RES:.*]] = acc.declare_device_resident 
varPtr(%[[ARG_HSE]] : !cir.ptr<!rec_HasSideEffects>) name("ArgHSE") -> 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_DEV_RES:.*]] = acc.declare_device_resident 
varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>) name("ArgInt") -> !cir.ptr<!s32i>
     // CHECK-NEXT: %[[LOC_HSE_DEV_RES:.*]] = acc.declare_device_resident 
varPtr(%[[LOC_HSE_ALLOCA]] : !cir.ptr<!rec_HasSideEffects>) name("LocalHSE") -> 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[LOC_INT_DEV_RES:.*]] = acc.declare_device_resident 
varPtr(%[[LOC_INT_ALLOCA]] : !cir.ptr<!s32i>) name("LocalInt") -> 
!cir.ptr<!s32i>
@@ -325,9 +321,8 @@ void use() {
 }
 
 void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, HasSideEffects 
*ArgHSEPtr) {
-    // CHECK: cir.func {{.*}}MemFunc2{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !rec_HasSideEffects{{.*}}, 
%[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
+    // CHECK: cir.func {{.*}}MemFunc2{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !cir.ptr<!rec_HasSideEffects> 
{llvm.align = 1 : i64, llvm.byref = !rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: 
!s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: !cir.ptr<!rec_HasSideEffects>{{.*}})
     // CHECK-NEXT: cir.alloca{{.*}}"this"
-    // CHECK-NEXT: %[[ARG_HSE_ALLOCA:.*]] = cir.alloca "ArgHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_ALLOCA:.*]] = cir.alloca "ArgInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: %[[ARG_HSE_PTR_ALLOCA:.*]] = cir.alloca "ArgHSEPtr" {{.*}} 
: !cir.ptr<!cir.ptr<!rec_HasSideEffects>>
     // CHECK-NEXT: %[[LOC_HSE_ALLOCA:.*]] = cir.alloca "LocalHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
@@ -336,7 +331,6 @@ void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, 
HasSideEffects *ArgHSEP
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
-    // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.load
     HasSideEffects LocalHSE;
     // CHECK-NEXT: cir.call{{.*}} : (!cir.ptr<!rec_HasSideEffects>{{.*}}) -> ()
@@ -346,7 +340,7 @@ void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, 
HasSideEffects *ArgHSEP
     // CHECK: }
     int LocalInt;
 #pragma acc declare device_resident(ArgHSE, ArgInt, ArgHSEPtr[1:1])
-    // CHECK: %[[ARG_HSE_DEV_RES:.*]] = acc.declare_device_resident 
varPtr(%[[ARG_HSE_ALLOCA]] : !cir.ptr<!rec_HasSideEffects>) name("ArgHSE") -> 
!cir.ptr<!rec_HasSideEffects>
+    // CHECK: %[[ARG_HSE_DEV_RES:.*]] = acc.declare_device_resident 
varPtr(%[[ARG_HSE]] : !cir.ptr<!rec_HasSideEffects>) name("ArgHSE") -> 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_DEV_RES:.*]] = acc.declare_device_resident 
varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>) name("ArgInt") -> !cir.ptr<!s32i>
     // CHECK-NEXT: %[[ONE:.*]] = cir.const #cir.int<1> : !s32i
     // CHECK-NEXT: %[[LB:.*]] = cir.builtin_int_cast %[[ONE]] : !s32i -> si32
@@ -396,8 +390,7 @@ void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, 
HasSideEffects *ArgHSEP
 extern "C" void do_thing();
 
 extern "C" void NormalFunc(HasSideEffects ArgHSE, int ArgInt, HasSideEffects 
*ArgHSEPtr) {
-    // CHECK: cir.func {{.*}}NormalFunc(%[[ARG_HSE:.*]]: 
!rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
-    // CHECK-NEXT: %[[ARG_HSE_ALLOCA:.*]] = cir.alloca "ArgHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
+    // CHECK: cir.func {{.*}}NormalFunc(%[[ARG_HSE:.*]]: 
!cir.ptr<!rec_HasSideEffects> {llvm.align = 1 : i64, llvm.byref = 
!rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
     // CHECK-NEXT: %[[ARG_INT_ALLOCA:.*]] = cir.alloca "ArgInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: %[[ARG_HSE_PTR_ALLOCA:.*]] = cir.alloca "ArgHSEPtr" {{.*}} 
: !cir.ptr<!cir.ptr<!rec_HasSideEffects>>
     // CHECK-NEXT: %[[LOC_HSE_ALLOCA:.*]] = cir.alloca "LocalHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
@@ -405,7 +398,6 @@ extern "C" void NormalFunc(HasSideEffects ArgHSE, int 
ArgInt, HasSideEffects *Ar
     // CHECK-NEXT: %[[LOC_INT_ALLOCA:.*]] = cir.alloca "LocalInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
-    // CHECK-NEXT: cir.store
     HasSideEffects LocalHSE;
     // CHECK-NEXT: cir.call{{.*}} : (!cir.ptr<!rec_HasSideEffects>{{.*}}) -> ()
     HasSideEffects LocalHSEArr[5];
@@ -414,7 +406,7 @@ extern "C" void NormalFunc(HasSideEffects ArgHSE, int 
ArgInt, HasSideEffects *Ar
     // CHECK: }
     int LocalInt;
 #pragma acc declare device_resident(ArgHSE, ArgInt, ArgHSEPtr[1:1])
-    // CHECK: %[[ARG_HSE_DEV_RES:.*]] = acc.declare_device_resident 
varPtr(%[[ARG_HSE_ALLOCA]] : !cir.ptr<!rec_HasSideEffects>) name("ArgHSE") -> 
!cir.ptr<!rec_HasSideEffects>
+    // CHECK: %[[ARG_HSE_DEV_RES:.*]] = acc.declare_device_resident 
varPtr(%[[ARG_HSE]] : !cir.ptr<!rec_HasSideEffects>) name("ArgHSE") -> 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_DEV_RES:.*]] = acc.declare_device_resident 
varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>) name("ArgInt") -> !cir.ptr<!s32i>
     // CHECK-NEXT: %[[ONE:.*]] = cir.const #cir.int<1> : !s32i
     // CHECK-NEXT: %[[LB:.*]] = cir.builtin_int_cast %[[ONE]] : !s32i -> si32
diff --git a/clang/test/CIR/CodeGenOpenACC/declare-present.cpp 
b/clang/test/CIR/CodeGenOpenACC/declare-present.cpp
index 37c29f8ce4357..af5067267ade2 100644
--- a/clang/test/CIR/CodeGenOpenACC/declare-present.cpp
+++ b/clang/test/CIR/CodeGenOpenACC/declare-present.cpp
@@ -1,7 +1,5 @@
-// TODO(cir): drop -fno-clangir-call-conv-lowering once CallConvLowering
-// supports parameters of an empty or tag class.
-// RUN: %clang_cc1 -fopenacc -Wno-openacc-self-if-potential-conflict -emit-cir 
-fclangir -fno-clangir-call-conv-lowering %s -o %t.cir 
-// RUN: %clang_cc1 -fopenacc -Wno-openacc-self-if-potential-conflict -emit-cir 
-fclangir -fno-clangir-call-conv-lowering %s -o - | FileCheck %s
+// RUN: %clang_cc1 -fopenacc -Wno-openacc-self-if-potential-conflict -emit-cir 
-fclangir %s -o %t.cir
+// RUN: %clang_cc1 -fopenacc -Wno-openacc-self-if-potential-conflict -emit-cir 
-fclangir %s -o - | FileCheck %s
 
 struct HasSideEffects {
   HasSideEffects();
@@ -14,9 +12,8 @@ struct Struct {
   static const int StaticMemInt;
 
   void MemFunc1(HasSideEffects ArgHSE, int ArgInt, HasSideEffects *ArgHSEPtr) {
-    // CHECK: cir.func {{.*}}MemFunc1{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !rec_HasSideEffects{{.*}}, 
%[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
+    // CHECK: cir.func {{.*}}MemFunc1{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !cir.ptr<!rec_HasSideEffects> 
{llvm.align = 1 : i64, llvm.byref = !rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: 
!s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: !cir.ptr<!rec_HasSideEffects>{{.*}})
     // CHECK-NEXT: cir.alloca "this"
-    // CHECK-NEXT: %[[ARG_HSE_ALLOCA:.*]] = cir.alloca "ArgHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_ALLOCA:.*]] = cir.alloca "ArgInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: %[[ARG_HSE_PTR_ALLOCA:.*]] = cir.alloca "ArgHSEPtr" {{.*}} 
: !cir.ptr<!cir.ptr<!rec_HasSideEffects>>
     // CHECK-NEXT: %[[LOC_HSE_ALLOCA:.*]] = cir.alloca "LocalHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
@@ -25,7 +22,6 @@ struct Struct {
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
-    // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.load
 
     HasSideEffects LocalHSE;
@@ -34,7 +30,7 @@ struct Struct {
     int LocalInt;
 
 #pragma acc declare present(ArgHSE, ArgInt, LocalHSE, LocalInt, 
ArgHSEPtr[1:1], LocalHSEArr[1:1])
-    // CHECK: %[[ARG_HSE_PRESENT:.*]] = acc.present varPtr(%[[ARG_HSE_ALLOCA]] 
: !cir.ptr<!rec_HasSideEffects>) name("ArgHSE") -> !cir.ptr<!rec_HasSideEffects>
+    // CHECK: %[[ARG_HSE_PRESENT:.*]] = acc.present varPtr(%[[ARG_HSE]] : 
!cir.ptr<!rec_HasSideEffects>) name("ArgHSE") -> !cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_PRESENT:.*]] = acc.present 
varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>) name("ArgInt") -> !cir.ptr<!s32i>
     // CHECK-NEXT: %[[LOC_HSE_PRESENT:.*]] = acc.present 
varPtr(%[[LOC_HSE_ALLOCA]] : !cir.ptr<!rec_HasSideEffects>) name("LocalHSE") -> 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[LOC_INT_PRESENT:.*]] = acc.present 
varPtr(%[[LOC_INT_ALLOCA]] : !cir.ptr<!s32i>) name("LocalInt") -> 
!cir.ptr<!s32i>
@@ -78,9 +74,8 @@ void use() {
 }
 
 void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, HasSideEffects 
*ArgHSEPtr) {
-    // CHECK: cir.func {{.*}}MemFunc2{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !rec_HasSideEffects{{.*}}, 
%[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
+    // CHECK: cir.func {{.*}}MemFunc2{{.*}}(%{{.*}}: 
!cir.ptr<!rec_Struct>{{.*}}, %[[ARG_HSE:.*]]: !cir.ptr<!rec_HasSideEffects> 
{llvm.align = 1 : i64, llvm.byref = !rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: 
!s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: !cir.ptr<!rec_HasSideEffects>{{.*}})
 // CHECK-NEXT: cir.alloca{{.*}}"this"
-    // CHECK-NEXT: %[[ARG_HSE_ALLOCA:.*]] = cir.alloca "ArgHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_ALLOCA:.*]] = cir.alloca "ArgInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: %[[ARG_HSE_PTR_ALLOCA:.*]] = cir.alloca "ArgHSEPtr" {{.*}} 
: !cir.ptr<!cir.ptr<!rec_HasSideEffects>>
     // CHECK-NEXT: %[[LOC_HSE_ALLOCA:.*]] = cir.alloca "LocalHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
@@ -89,7 +84,6 @@ void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, 
HasSideEffects *ArgHSEP
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
-    // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.load
     HasSideEffects LocalHSE;
     // CHECK-NEXT: cir.call{{.*}} : (!cir.ptr<!rec_HasSideEffects>{{.*}}) -> ()
@@ -99,7 +93,7 @@ void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, 
HasSideEffects *ArgHSEP
     // CHECK: }
     int LocalInt;
 #pragma acc declare present(ArgHSE, ArgInt, ArgHSEPtr[1:1])
-    // CHECK: %[[ARG_HSE_PRESENT:.*]] = acc.present varPtr(%[[ARG_HSE_ALLOCA]] 
: !cir.ptr<!rec_HasSideEffects>) name("ArgHSE") -> !cir.ptr<!rec_HasSideEffects>
+    // CHECK: %[[ARG_HSE_PRESENT:.*]] = acc.present varPtr(%[[ARG_HSE]] : 
!cir.ptr<!rec_HasSideEffects>) name("ArgHSE") -> !cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_PRESENT:.*]] = acc.present 
varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>) name("ArgInt") -> !cir.ptr<!s32i>
     // CHECK-NEXT: %[[ONE:.*]] = cir.const #cir.int<1> : !s32i
     // CHECK-NEXT: %[[LB:.*]] = cir.builtin_int_cast %[[ONE]] : !s32i -> si32
@@ -149,8 +143,7 @@ void Struct::MemFunc2(HasSideEffects ArgHSE, int ArgInt, 
HasSideEffects *ArgHSEP
 extern "C" void do_thing();
 
 extern "C" void NormalFunc(HasSideEffects ArgHSE, int ArgInt, HasSideEffects 
*ArgHSEPtr) {
-    // CHECK: cir.func {{.*}}NormalFunc(%[[ARG_HSE:.*]]: 
!rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
-    // CHECK-NEXT: %[[ARG_HSE_ALLOCA:.*]] = cir.alloca "ArgHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
+    // CHECK: cir.func {{.*}}NormalFunc(%[[ARG_HSE:.*]]: 
!cir.ptr<!rec_HasSideEffects> {llvm.align = 1 : i64, llvm.byref = 
!rec_HasSideEffects{{.*}}, %[[ARG_INT:.*]]: !s32i {{.*}}, %[[ARG_HSE_PTR:.*]]: 
!cir.ptr<!rec_HasSideEffects>{{.*}})
     // CHECK-NEXT: %[[ARG_INT_ALLOCA:.*]] = cir.alloca "ArgInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: %[[ARG_HSE_PTR_ALLOCA:.*]] = cir.alloca "ArgHSEPtr" {{.*}} 
: !cir.ptr<!cir.ptr<!rec_HasSideEffects>>
     // CHECK-NEXT: %[[LOC_HSE_ALLOCA:.*]] = cir.alloca "LocalHSE" {{.*}} : 
!cir.ptr<!rec_HasSideEffects>
@@ -158,7 +151,6 @@ extern "C" void NormalFunc(HasSideEffects ArgHSE, int 
ArgInt, HasSideEffects *Ar
     // CHECK-NEXT: %[[LOC_INT_ALLOCA:.*]] = cir.alloca "LocalInt" {{.*}} : 
!cir.ptr<!s32i>
     // CHECK-NEXT: cir.store
     // CHECK-NEXT: cir.store
-    // CHECK-NEXT: cir.store
     HasSideEffects LocalHSE;
     // CHECK-NEXT: cir.call{{.*}} : (!cir.ptr<!rec_HasSideEffects>{{.*}}) -> ()
     HasSideEffects LocalHSEArr[5];
@@ -167,7 +159,7 @@ extern "C" void NormalFunc(HasSideEffects ArgHSE, int 
ArgInt, HasSideEffects *Ar
     // CHECK: }
     int LocalInt;
 #pragma acc declare present(ArgHSE, ArgInt, ArgHSEPtr[1:1])
-    // CHECK: %[[ARG_HSE_PRESENT:.*]] = acc.present varPtr(%[[ARG_HSE_ALLOCA]] 
: !cir.ptr<!rec_HasSideEffects>) name("ArgHSE") -> !cir.ptr<!rec_HasSideEffects>
+    // CHECK: %[[ARG_HSE_PRESENT:.*]] = acc.present varPtr(%[[ARG_HSE]] : 
!cir.ptr<!rec_HasSideEffects>) name("ArgHSE") -> !cir.ptr<!rec_HasSideEffects>
     // CHECK-NEXT: %[[ARG_INT_PRESENT:.*]] = acc.present 
varPtr(%[[ARG_INT_ALLOCA]] : !cir.ptr<!s32i>) name("ArgInt") -> !cir.ptr<!s32i>
     // CHECK-NEXT: %[[ONE:.*]] = cir.const #cir.int<1> : !s32i
     // CHECK-NEXT: %[[LB:.*]] = cir.builtin_int_cast %[[ONE]] : !s32i -> si32

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