[flang-commits] [flang] bb8bf85 - [flang] add internal_assoc flag to mark variable captured in internal procedure (#117161)
via flang-commits
flang-commits at lists.llvm.org
Tue Nov 26 00:21:16 PST 2024
Author: jeanPerier
Date: 2024-11-26T09:21:13+01:00
New Revision: bb8bf858e865ec3119352bdef43c09adb4c93b31
URL: https://github.com/llvm/llvm-project/commit/bb8bf858e865ec3119352bdef43c09adb4c93b31
DIFF: https://github.com/llvm/llvm-project/commit/bb8bf858e865ec3119352bdef43c09adb4c93b31.diff
LOG: [flang] add internal_assoc flag to mark variable captured in internal procedure (#117161)
This patch adds a flag to mark hlfir.declare of host variables that are
captured in some internal procedure.
It enables implementing a simple fir.call handling in
fir::AliasAnalysis::getModRef leveraging Fortran language specifications
and without a data flow analysis.
This will allow implementing an optimization for "array =
array_function()" where array storage is passed directly into the hidden
result argument to "array_function" when it can be proven that
arraY_function does not reference "array".
Captured host variables are very tricky because they may be accessed
indirectly in any calls if the internal procedure address was captured
via some global procedure pointer. Without flagging them, there is no
way around doing a complex inter procedural data flow analysis:
- checking that the call is not made to an internal procedure is not
enough because of the possibility of indirect calls made to internal
procedures inside the callee.
- checking that the current func.func has no internal procedure is not
enough because this would be invalid with inlining when an procedure
with internal procedures is inlined inside a procedure without internal
procedure.
Added:
Modified:
flang/include/flang/Lower/AbstractConverter.h
flang/include/flang/Lower/PFTBuilder.h
flang/include/flang/Optimizer/Dialect/FIRAttr.td
flang/lib/Lower/Bridge.cpp
flang/lib/Lower/ConvertVariable.cpp
flang/test/Lower/HLFIR/assumed-rank-internal-proc.f90
flang/test/Lower/HLFIR/cray-pointers.f90
flang/test/Lower/HLFIR/internal-procedures.f90
flang/test/Lower/OpenMP/threadprivate-host-association-2.f90
flang/test/Lower/OpenMP/threadprivate-host-association.f90
Removed:
################################################################################
diff --git a/flang/include/flang/Lower/AbstractConverter.h b/flang/include/flang/Lower/AbstractConverter.h
index daded9091780e2..583fa6fb215a7b 100644
--- a/flang/include/flang/Lower/AbstractConverter.h
+++ b/flang/include/flang/Lower/AbstractConverter.h
@@ -61,6 +61,7 @@ class SymMap;
struct SymbolBox;
namespace pft {
struct Variable;
+struct FunctionLikeUnit;
}
using SomeExpr = Fortran::evaluate::Expr<Fortran::evaluate::SomeType>;
@@ -233,6 +234,10 @@ class AbstractConverter {
virtual bool
isRegisteredDummySymbol(Fortran::semantics::SymbolRef symRef) const = 0;
+ /// Returns the FunctionLikeUnit being lowered, if any.
+ virtual const Fortran::lower::pft::FunctionLikeUnit *
+ getCurrentFunctionUnit() const = 0;
+
//===--------------------------------------------------------------------===//
// Types
//===--------------------------------------------------------------------===//
diff --git a/flang/include/flang/Lower/PFTBuilder.h b/flang/include/flang/Lower/PFTBuilder.h
index 7f1b93c564b4c4..9b9d9febc190a9 100644
--- a/flang/include/flang/Lower/PFTBuilder.h
+++ b/flang/include/flang/Lower/PFTBuilder.h
@@ -693,6 +693,7 @@ struct FunctionLikeUnit : public ProgramUnit {
/// Return the host associations for this function like unit. The list of host
/// associations are kept in the host procedure.
HostAssociations &getHostAssoc() { return hostAssociations; }
+ const HostAssociations &getHostAssoc() const { return hostAssociations; };
LLVM_DUMP_METHOD void dump() const;
diff --git a/flang/include/flang/Optimizer/Dialect/FIRAttr.td b/flang/include/flang/Optimizer/Dialect/FIRAttr.td
index 4e84959a3b3e14..e3474da6685af8 100644
--- a/flang/include/flang/Optimizer/Dialect/FIRAttr.td
+++ b/flang/include/flang/Optimizer/Dialect/FIRAttr.td
@@ -32,14 +32,17 @@ def FIRpointer : I32BitEnumAttrCaseBit<"pointer", 9>;
def FIRtarget : I32BitEnumAttrCaseBit<"target", 10>;
def FIRvalue : I32BitEnumAttrCaseBit<"value", 11>;
def FIRvolatile : I32BitEnumAttrCaseBit<"fortran_volatile", 12, "volatile">;
+// Used inside internal procedure to flag variables host associated from parent procedure.
def FIRHostAssoc : I32BitEnumAttrCaseBit<"host_assoc", 13>;
+// Used inside parent procedure to flag variables host associated in internal procedure.
+def FIRInternalAssoc : I32BitEnumAttrCaseBit<"internal_assoc", 14>;
def fir_FortranVariableFlagsEnum : I32BitEnumAttr<
"FortranVariableFlagsEnum",
"Fortran variable attributes",
[FIRnoAttributes, FIRallocatable, FIRasynchronous, FIRbind_c, FIRcontiguous,
FIRintent_in, FIRintent_inout, FIRintent_out, FIRoptional, FIRparameter,
- FIRpointer, FIRtarget, FIRvalue, FIRvolatile, FIRHostAssoc]> {
+ FIRpointer, FIRtarget, FIRvalue, FIRvolatile, FIRHostAssoc, FIRInternalAssoc]> {
let separator = ", ";
let cppNamespace = "::fir";
let printBitEnumPrimaryGroups = 1;
diff --git a/flang/lib/Lower/Bridge.cpp b/flang/lib/Lower/Bridge.cpp
index 7f41742bf5e8b2..cbae6955e2a076 100644
--- a/flang/lib/Lower/Bridge.cpp
+++ b/flang/lib/Lower/Bridge.cpp
@@ -1058,6 +1058,11 @@ class FirConverter : public Fortran::lower::AbstractConverter {
return registeredDummySymbols.contains(sym);
}
+ const Fortran::lower::pft::FunctionLikeUnit *
+ getCurrentFunctionUnit() const override final {
+ return currentFunctionUnit;
+ }
+
void registerTypeInfo(mlir::Location loc,
Fortran::lower::SymbolRef typeInfoSym,
const Fortran::semantics::DerivedTypeSpec &typeSpec,
@@ -5595,6 +5600,7 @@ class FirConverter : public Fortran::lower::AbstractConverter {
/// Lower a procedure (nest).
void lowerFunc(Fortran::lower::pft::FunctionLikeUnit &funit) {
setCurrentPosition(funit.getStartingSourceLoc());
+ setCurrentFunctionUnit(&funit);
for (int entryIndex = 0, last = funit.entryPointList.size();
entryIndex < last; ++entryIndex) {
funit.setActiveEntry(entryIndex);
@@ -5604,6 +5610,7 @@ class FirConverter : public Fortran::lower::AbstractConverter {
endNewFunction(funit);
}
funit.setActiveEntry(0);
+ setCurrentFunctionUnit(nullptr);
for (Fortran::lower::pft::ContainedUnit &unit : funit.containedUnitList)
if (auto *f = std::get_if<Fortran::lower::pft::FunctionLikeUnit>(&unit))
lowerFunc(*f); // internal procedure
@@ -5967,12 +5974,17 @@ class FirConverter : public Fortran::lower::AbstractConverter {
/// Reset all registered dummy symbols.
void resetRegisteredDummySymbols() { registeredDummySymbols.clear(); }
+ void setCurrentFunctionUnit(Fortran::lower::pft::FunctionLikeUnit *unit) {
+ currentFunctionUnit = unit;
+ }
+
//===--------------------------------------------------------------------===//
Fortran::lower::LoweringBridge &bridge;
Fortran::evaluate::FoldingContext foldingContext;
fir::FirOpBuilder *builder = nullptr;
Fortran::lower::pft::Evaluation *evalPtr = nullptr;
+ Fortran::lower::pft::FunctionLikeUnit *currentFunctionUnit = nullptr;
Fortran::lower::SymMap localSymbols;
Fortran::parser::CharBlock currentPosition;
TypeInfoConverter typeInfoConverter;
diff --git a/flang/lib/Lower/ConvertVariable.cpp b/flang/lib/Lower/ConvertVariable.cpp
index cc51d5a9bb8daf..deb855e1069f7d 100644
--- a/flang/lib/Lower/ConvertVariable.cpp
+++ b/flang/lib/Lower/ConvertVariable.cpp
@@ -1670,6 +1670,25 @@ cuf::DataAttributeAttr Fortran::lower::translateSymbolCUFDataAttribute(
return cuf::getDataAttribute(mlirContext, cudaAttr);
}
+static bool
+isCapturedInInternalProcedure(Fortran::lower::AbstractConverter &converter,
+ const Fortran::semantics::Symbol &sym) {
+ const Fortran::lower::pft::FunctionLikeUnit *funit =
+ converter.getCurrentFunctionUnit();
+ if (!funit || funit->getHostAssoc().empty())
+ return false;
+ if (funit->getHostAssoc().isAssociated(sym))
+ return true;
+ // Consider that any capture of a variable that is in an equivalence with the
+ // symbol implies that the storage of the symbol may also be accessed inside
+ // the internal procedure and flag it as captured.
+ if (const auto *equivSet = Fortran::semantics::FindEquivalenceSet(sym))
+ for (const Fortran::semantics::EquivalenceObject &eqObj : *equivSet)
+ if (funit->getHostAssoc().isAssociated(eqObj.symbol))
+ return true;
+ return false;
+}
+
/// Map a symbol to its FIR address and evaluated specification expressions.
/// Not for symbols lowered to fir.box.
/// Will optionally create fir.declare.
@@ -1705,8 +1724,12 @@ static void genDeclareSymbol(Fortran::lower::AbstractConverter &converter,
if (len)
lenParams.emplace_back(len);
auto name = converter.mangleName(sym);
+ fir::FortranVariableFlagsEnum extraFlags = {};
+ if (isCapturedInInternalProcedure(converter, sym))
+ extraFlags = extraFlags | fir::FortranVariableFlagsEnum::internal_assoc;
fir::FortranVariableFlagsAttr attributes =
- Fortran::lower::translateSymbolAttributes(builder.getContext(), sym);
+ Fortran::lower::translateSymbolAttributes(builder.getContext(), sym,
+ extraFlags);
cuf::DataAttributeAttr dataAttr =
Fortran::lower::translateSymbolCUFDataAttribute(builder.getContext(),
sym);
@@ -1793,6 +1816,8 @@ void Fortran::lower::genDeclareSymbol(
!sym.detailsIf<Fortran::semantics::CommonBlockDetails>()) {
fir::FirOpBuilder &builder = converter.getFirOpBuilder();
const mlir::Location loc = genLocation(converter, sym);
+ if (isCapturedInInternalProcedure(converter, sym))
+ extraFlags = extraFlags | fir::FortranVariableFlagsEnum::internal_assoc;
// FIXME: Using the ultimate symbol for translating symbol attributes will
// lead to situations where the VOLATILE/ASYNCHRONOUS attributes are not
// propagated to the hlfir.declare (these attributes can be added when
diff --git a/flang/test/Lower/HLFIR/assumed-rank-internal-proc.f90 b/flang/test/Lower/HLFIR/assumed-rank-internal-proc.f90
index 690ceb64a03cf9..e46d21d915eb1f 100644
--- a/flang/test/Lower/HLFIR/assumed-rank-internal-proc.f90
+++ b/flang/test/Lower/HLFIR/assumed-rank-internal-proc.f90
@@ -17,7 +17,7 @@ subroutine internal()
! CHECK-LABEL: func.func @_QPtest_assumed_rank(
! CHECK-SAME: %[[VAL_0:.*]]: !fir.box<!fir.array<*:f32>> {fir.bindc_name = "x"}) {
! CHECK: %[[VAL_1:.*]] = fir.dummy_scope : !fir.dscope
-! CHECK: %[[VAL_2:.*]]:2 = hlfir.declare %[[VAL_0]] dummy_scope %[[VAL_1]] {uniq_name = "_QFtest_assumed_rankEx"} : (!fir.box<!fir.array<*:f32>>, !fir.dscope) -> (!fir.box<!fir.array<*:f32>>, !fir.box<!fir.array<*:f32>>)
+! CHECK: %[[VAL_2:.*]]:2 = hlfir.declare %[[VAL_0]] dummy_scope %[[VAL_1]] {fortran_attrs = #fir.var_attrs<internal_assoc>, uniq_name = "_QFtest_assumed_rankEx"} : (!fir.box<!fir.array<*:f32>>, !fir.dscope) -> (!fir.box<!fir.array<*:f32>>, !fir.box<!fir.array<*:f32>>)
! CHECK: %[[VAL_3:.*]] = fir.alloca tuple<!fir.box<!fir.array<*:f32>>>
! CHECK: %[[VAL_4:.*]] = arith.constant 0 : i32
! CHECK: %[[VAL_5:.*]] = fir.coordinate_of %[[VAL_3]], %[[VAL_4]] : (!fir.ref<tuple<!fir.box<!fir.array<*:f32>>>>, i32) -> !fir.ref<!fir.box<!fir.array<*:f32>>>
@@ -55,7 +55,7 @@ subroutine internal()
! CHECK-LABEL: func.func @_QPtest_assumed_rank_optional(
! CHECK-SAME: %[[VAL_0:.*]]: !fir.class<!fir.array<*:none>> {fir.bindc_name = "x", fir.optional}) {
! CHECK: %[[VAL_1:.*]] = fir.dummy_scope : !fir.dscope
-! CHECK: %[[VAL_2:.*]]:2 = hlfir.declare %[[VAL_0]] dummy_scope %[[VAL_1]] {fortran_attrs = #fir.var_attrs<optional>, uniq_name = "_QFtest_assumed_rank_optionalEx"} : (!fir.class<!fir.array<*:none>>, !fir.dscope) -> (!fir.class<!fir.array<*:none>>, !fir.class<!fir.array<*:none>>)
+! CHECK: %[[VAL_2:.*]]:2 = hlfir.declare %[[VAL_0]] dummy_scope %[[VAL_1]] {fortran_attrs = #fir.var_attrs<optional, internal_assoc>, uniq_name = "_QFtest_assumed_rank_optionalEx"} : (!fir.class<!fir.array<*:none>>, !fir.dscope) -> (!fir.class<!fir.array<*:none>>, !fir.class<!fir.array<*:none>>)
! CHECK: %[[VAL_3:.*]] = fir.alloca tuple<!fir.class<!fir.array<*:none>>>
! CHECK: %[[VAL_4:.*]] = arith.constant 0 : i32
! CHECK: %[[VAL_5:.*]] = fir.coordinate_of %[[VAL_3]], %[[VAL_4]] : (!fir.ref<tuple<!fir.class<!fir.array<*:none>>>>, i32) -> !fir.ref<!fir.class<!fir.array<*:none>>>
@@ -107,7 +107,7 @@ subroutine internal()
! CHECK-LABEL: func.func @_QPtest_assumed_rank_ptr(
! CHECK-SAME: %[[VAL_0:.*]]: !fir.ref<!fir.box<!fir.ptr<!fir.array<*:f32>>>> {fir.bindc_name = "x"}) {
! CHECK: %[[VAL_1:.*]] = fir.dummy_scope : !fir.dscope
-! CHECK: %[[VAL_2:.*]]:2 = hlfir.declare %[[VAL_0]] dummy_scope %[[VAL_1]] {fortran_attrs = #fir.var_attrs<pointer>, uniq_name = "_QFtest_assumed_rank_ptrEx"} : (!fir.ref<!fir.box<!fir.ptr<!fir.array<*:f32>>>>, !fir.dscope) -> (!fir.ref<!fir.box<!fir.ptr<!fir.array<*:f32>>>>, !fir.ref<!fir.box<!fir.ptr<!fir.array<*:f32>>>>)
+! CHECK: %[[VAL_2:.*]]:2 = hlfir.declare %[[VAL_0]] dummy_scope %[[VAL_1]] {fortran_attrs = #fir.var_attrs<pointer, internal_assoc>, uniq_name = "_QFtest_assumed_rank_ptrEx"} : (!fir.ref<!fir.box<!fir.ptr<!fir.array<*:f32>>>>, !fir.dscope) -> (!fir.ref<!fir.box<!fir.ptr<!fir.array<*:f32>>>>, !fir.ref<!fir.box<!fir.ptr<!fir.array<*:f32>>>>)
! CHECK: %[[VAL_3:.*]] = fir.alloca tuple<!fir.ref<!fir.box<!fir.ptr<!fir.array<*:f32>>>>>
! CHECK: %[[VAL_4:.*]] = arith.constant 0 : i32
! CHECK: %[[VAL_5:.*]] = fir.coordinate_of %[[VAL_3]], %[[VAL_4]] : (!fir.ref<tuple<!fir.ref<!fir.box<!fir.ptr<!fir.array<*:f32>>>>>>, i32) -> !fir.llvm_ptr<!fir.ref<!fir.box<!fir.ptr<!fir.array<*:f32>>>>>
diff --git a/flang/test/Lower/HLFIR/cray-pointers.f90 b/flang/test/Lower/HLFIR/cray-pointers.f90
index ae903c8b44be7b..bb49977dd2227b 100644
--- a/flang/test/Lower/HLFIR/cray-pointers.f90
+++ b/flang/test/Lower/HLFIR/cray-pointers.f90
@@ -381,12 +381,12 @@ subroutine internal()
! CHECK: %[[VAL_1:.*]] = fir.alloca !fir.box<!fir.ptr<!fir.char<1,?>>>
! CHECK: %[[VAL_2:.*]]:2 = hlfir.declare %[[VAL_0]] dummy_scope %{{[0-9]+}} {uniq_name = "_QFtest_craypointer_captureEn"} : (!fir.ref<i32>, !fir.dscope) -> (!fir.ref<i32>, !fir.ref<i32>)
! CHECK: %[[VAL_3:.*]] = fir.alloca i64 {bindc_name = "cray_pointer", uniq_name = "_QFtest_craypointer_captureEcray_pointer"}
-! CHECK: %[[VAL_4:.*]]:2 = hlfir.declare %[[VAL_3]] {uniq_name = "_QFtest_craypointer_captureEcray_pointer"} : (!fir.ref<i64>) -> (!fir.ref<i64>, !fir.ref<i64>)
+! CHECK: %[[VAL_4:.*]]:2 = hlfir.declare %[[VAL_3]] {fortran_attrs = #fir.var_attrs<internal_assoc>, uniq_name = "_QFtest_craypointer_captureEcray_pointer"} : (!fir.ref<i64>) -> (!fir.ref<i64>, !fir.ref<i64>)
! CHECK: %[[VAL_5:.*]] = fir.load %[[VAL_2]]#0 : !fir.ref<i32>
! CHECK: %[[VAL_6:.*]] = arith.constant 0 : i32
! CHECK: %[[VAL_7:.*]] = arith.cmpi sgt, %[[VAL_5]], %[[VAL_6]] : i32
! CHECK: %[[VAL_8:.*]] = arith.select %[[VAL_7]], %[[VAL_5]], %[[VAL_6]] : i32
-! CHECK: %[[VAL_9:.*]]:2 = hlfir.declare %[[VAL_1]] typeparams %[[VAL_8]] {fortran_attrs = #fir.var_attrs<pointer>, uniq_name = "_QFtest_craypointer_captureEcray_pointee"} : (!fir.ref<!fir.box<!fir.ptr<!fir.char<1,?>>>>, i32) -> (!fir.ref<!fir.box<!fir.ptr<!fir.char<1,?>>>>, !fir.ref<!fir.box<!fir.ptr<!fir.char<1,?>>>>)
+! CHECK: %[[VAL_9:.*]]:2 = hlfir.declare %[[VAL_1]] typeparams %[[VAL_8]] {fortran_attrs = #fir.var_attrs<pointer, internal_assoc>, uniq_name = "_QFtest_craypointer_captureEcray_pointee"} : (!fir.ref<!fir.box<!fir.ptr<!fir.char<1,?>>>>, i32) -> (!fir.ref<!fir.box<!fir.ptr<!fir.char<1,?>>>>, !fir.ref<!fir.box<!fir.ptr<!fir.char<1,?>>>>)
! CHECK: %[[VAL_10:.*]] = fir.zero_bits !fir.ptr<!fir.char<1,?>>
! CHECK: %[[VAL_11:.*]] = fir.embox %[[VAL_10]] typeparams %[[VAL_8]] : (!fir.ptr<!fir.char<1,?>>, i32) -> !fir.box<!fir.ptr<!fir.char<1,?>>>
! CHECK: fir.store %[[VAL_11]] to %[[VAL_9]]#0 : !fir.ref<!fir.box<!fir.ptr<!fir.char<1,?>>>>
diff --git a/flang/test/Lower/HLFIR/internal-procedures.f90 b/flang/test/Lower/HLFIR/internal-procedures.f90
index f0df1a7f6e64f4..12d862bf316c3f 100644
--- a/flang/test/Lower/HLFIR/internal-procedures.f90
+++ b/flang/test/Lower/HLFIR/internal-procedures.f90
@@ -9,6 +9,9 @@ subroutine internal
call takes_array(x)
end subroutine
end subroutine
+! CHECK-LABEL: func.func @_QPtest_explicit_shape_array(
+! CHECK: %[[VAL_1:.*]]:2 = hlfir.declare {{.*}} {fortran_attrs = #fir.var_attrs<internal_assoc>, uniq_name = "_QFtest_explicit_shape_arrayEx"}
+
! CHECK-LABEL: func.func private @_QFtest_explicit_shape_arrayPinternal(
! CHECK-SAME: %[[VAL_0:.*]]: !fir.ref<tuple<!fir.box<!fir.array<?xf32>>>> {fir.host_assoc}) attributes {fir.host_symbol = {{.*}}, llvm.linkage = #llvm.linkage<internal>} {
! CHECK: %[[VAL_1:.*]] = arith.constant 0 : i32
@@ -27,6 +30,9 @@ subroutine internal
call takes_array(x)
end subroutine
end subroutine
+! CHECK-LABEL: func.func @_QPtest_assumed_shape(
+! CHECK: %[[VAL_1:.*]]:2 = hlfir.declare {{.*}} {fortran_attrs = #fir.var_attrs<internal_assoc>, uniq_name = "_QFtest_assumed_shapeEx"}
+
! CHECK-LABEL: func.func private @_QFtest_assumed_shapePinternal(
! CHECK-SAME: %[[VAL_0:.*]]: !fir.ref<tuple<!fir.box<!fir.array<?xf32>>>> {fir.host_assoc}) attributes {fir.host_symbol = {{.*}}, llvm.linkage = #llvm.linkage<internal>} {
! CHECK: %[[VAL_1:.*]] = arith.constant 0 : i32
@@ -64,7 +70,7 @@ subroutine internal()
end subroutine
! CHECK-LABEL: func.func @_QPtest_proc_pointer(
! CHECK-SAME: %[[VAL_0:.*]]: !fir.ref<!fir.boxproc<() -> ()>>) {
-! CHECK: %[[VAL_1:.*]]:2 = hlfir.declare %[[VAL_0]] dummy_scope %{{[0-9]+}} {fortran_attrs = #fir.var_attrs<pointer>, uniq_name = "_QFtest_proc_pointerEp"} : (!fir.ref<!fir.boxproc<() -> ()>>, !fir.dscope) -> (!fir.ref<!fir.boxproc<() -> ()>>, !fir.ref<!fir.boxproc<() -> ()>>)
+! CHECK: %[[VAL_1:.*]]:2 = hlfir.declare %[[VAL_0]] dummy_scope %{{[0-9]+}} {fortran_attrs = #fir.var_attrs<pointer, internal_assoc>, uniq_name = "_QFtest_proc_pointerEp"} : (!fir.ref<!fir.boxproc<() -> ()>>, !fir.dscope) -> (!fir.ref<!fir.boxproc<() -> ()>>, !fir.ref<!fir.boxproc<() -> ()>>)
! CHECK: %[[VAL_2:.*]] = fir.alloca tuple<!fir.ref<!fir.boxproc<() -> ()>>>
! CHECK: %[[VAL_3:.*]] = arith.constant 0 : i32
! CHECK: %[[VAL_4:.*]] = fir.coordinate_of %[[VAL_2]], %[[VAL_3]] : (!fir.ref<tuple<!fir.ref<!fir.boxproc<() -> ()>>>>, i32) -> !fir.llvm_ptr<!fir.ref<!fir.boxproc<() -> ()>>>
@@ -79,3 +85,19 @@ subroutine internal()
! CHECK: %[[VAL_2:.*]] = fir.coordinate_of %[[VAL_0]], %[[VAL_1]] : (!fir.ref<tuple<!fir.ref<!fir.boxproc<() -> ()>>>>, i32) -> !fir.llvm_ptr<!fir.ref<!fir.boxproc<() -> ()>>>
! CHECK: %[[VAL_3:.*]] = fir.load %[[VAL_2]] : !fir.llvm_ptr<!fir.ref<!fir.boxproc<() -> ()>>>
! CHECK: %[[VAL_4:.*]]:2 = hlfir.declare %[[VAL_3]] {fortran_attrs = #fir.var_attrs<pointer, host_assoc>, uniq_name = "_QFtest_proc_pointerEp"} : (!fir.ref<!fir.boxproc<() -> ()>>) -> (!fir.ref<!fir.boxproc<() -> ()>>, !fir.ref<!fir.boxproc<() -> ()>>)
+
+
+! Verify that all equivalence members gets the internal_assoc flag set if one
+! of them is captured in an internal procedure.
+subroutine test_captured_equiv()
+ real :: x, y
+ equivalence(x,y)
+ call internal()
+contains
+subroutine internal()
+ y = 0.
+end subroutine
+end subroutine
+! CHECK-LABEL: func.func @_QPtest_captured_equiv() {
+! CHECK: hlfir.declare %{{.*}} {fortran_attrs = #fir.var_attrs<internal_assoc>, uniq_name = "_QFtest_captured_equivEx"}
+! CHECK: hlfir.declare %{{.*}} {fortran_attrs = #fir.var_attrs<internal_assoc>, uniq_name = "_QFtest_captured_equivEy"}
diff --git a/flang/test/Lower/OpenMP/threadprivate-host-association-2.f90 b/flang/test/Lower/OpenMP/threadprivate-host-association-2.f90
index a8d29baf74f220..546d4920042d79 100644
--- a/flang/test/Lower/OpenMP/threadprivate-host-association-2.f90
+++ b/flang/test/Lower/OpenMP/threadprivate-host-association-2.f90
@@ -5,10 +5,10 @@
!CHECK: func.func @_QQmain() attributes {fir.bindc_name = "main"} {
!CHECK: %[[A:.*]] = fir.alloca i32 {bindc_name = "a", uniq_name = "_QFEa"}
-!CHECK: %[[A_DECL:.*]]:2 = hlfir.declare %[[A]] {uniq_name = "_QFEa"} : (!fir.ref<i32>) -> (!fir.ref<i32>, !fir.ref<i32>)
+!CHECK: %[[A_DECL:.*]]:2 = hlfir.declare %[[A]] {fortran_attrs = #fir.var_attrs<internal_assoc>, uniq_name = "_QFEa"} : (!fir.ref<i32>) -> (!fir.ref<i32>, !fir.ref<i32>)
!CHECK: %[[A_ADDR:.*]] = fir.address_of(@_QFEa) : !fir.ref<i32>
!CHECK: %[[TP_A:.*]] = omp.threadprivate %[[A_ADDR]] : !fir.ref<i32> -> !fir.ref<i32>
-!CHECK: %[[TP_A_DECL:.*]]:2 = hlfir.declare %[[TP_A]] {uniq_name = "_QFEa"} : (!fir.ref<i32>) -> (!fir.ref<i32>, !fir.ref<i32>)
+!CHECK: %[[TP_A_DECL:.*]]:2 = hlfir.declare %[[TP_A]] {fortran_attrs = #fir.var_attrs<internal_assoc>, uniq_name = "_QFEa"} : (!fir.ref<i32>) -> (!fir.ref<i32>, !fir.ref<i32>)
!CHECK: fir.call @_QFPsub() fastmath<contract> : () -> ()
!CHECK: return
!CHECK: }
diff --git a/flang/test/Lower/OpenMP/threadprivate-host-association.f90 b/flang/test/Lower/OpenMP/threadprivate-host-association.f90
index 096e510c19c690..4fd958ba3b68c9 100644
--- a/flang/test/Lower/OpenMP/threadprivate-host-association.f90
+++ b/flang/test/Lower/OpenMP/threadprivate-host-association.f90
@@ -5,9 +5,9 @@
!CHECK: func.func @_QQmain() attributes {fir.bindc_name = "main"} {
!CHECK: %[[A:.*]] = fir.address_of(@_QFEa) : !fir.ref<i32>
-!CHECK: %[[A_DECL:.*]]:2 = hlfir.declare %[[A]] {uniq_name = "_QFEa"} : (!fir.ref<i32>) -> (!fir.ref<i32>, !fir.ref<i32>)
+!CHECK: %[[A_DECL:.*]]:2 = hlfir.declare %[[A]] {fortran_attrs = #fir.var_attrs<internal_assoc>, uniq_name = "_QFEa"} : (!fir.ref<i32>) -> (!fir.ref<i32>, !fir.ref<i32>)
!CHECK: %[[TP_A:.*]] = omp.threadprivate %[[A_DECL]]#1 : !fir.ref<i32> -> !fir.ref<i32>
-!CHECK: %[[TP_A_DECL:.*]]:2 = hlfir.declare %[[TP_A]] {uniq_name = "_QFEa"} : (!fir.ref<i32>) -> (!fir.ref<i32>, !fir.ref<i32>)
+!CHECK: %[[TP_A_DECL:.*]]:2 = hlfir.declare %[[TP_A]] {fortran_attrs = #fir.var_attrs<internal_assoc>, uniq_name = "_QFEa"} : (!fir.ref<i32>) -> (!fir.ref<i32>, !fir.ref<i32>)
!CHECK: fir.call @_QFPsub() fastmath<contract> : () -> ()
!CHECK: return
!CHECK: }
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