[flang-commits] [flang] cc38a4a - [flang] Lower character related intrinsics
Valentin Clement via flang-commits
flang-commits at lists.llvm.org
Wed Mar 16 23:16:21 PDT 2022
Author: Valentin Clement
Date: 2022-03-17T07:16:08+01:00
New Revision: cc38a4a66569532be941866b29f4be43625af345
URL: https://github.com/llvm/llvm-project/commit/cc38a4a66569532be941866b29f4be43625af345
DIFF: https://github.com/llvm/llvm-project/commit/cc38a4a66569532be941866b29f4be43625af345.diff
LOG: [flang] Lower character related intrinsics
This patch adds lowering for some character related
intrinsics:
- `scan`
- `verify`
This patch is part of the upstreaming effort from fir-dev branch.
Reviewed By: PeteSteinfeld
Differential Revision: https://reviews.llvm.org/D121842
Co-authored-by: Jean Perier <jperier at nvidia.com>
Co-authored-by: mleair <leairmark at gmail.com>
Co-authored-by: Eric Schweitz <eschweitz at nvidia.com>
Added:
flang/test/Lower/Intrinsics/scan.f90
flang/test/Lower/Intrinsics/verify.f90
Modified:
flang/lib/Lower/IntrinsicCall.cpp
Removed:
################################################################################
diff --git a/flang/lib/Lower/IntrinsicCall.cpp b/flang/lib/Lower/IntrinsicCall.cpp
index 289b1869bfa5d..f06d7b442e6f1 100644
--- a/flang/lib/Lower/IntrinsicCall.cpp
+++ b/flang/lib/Lower/IntrinsicCall.cpp
@@ -486,6 +486,7 @@ struct IntrinsicLibrary {
void genRandomInit(llvm::ArrayRef<fir::ExtendedValue>);
void genRandomNumber(llvm::ArrayRef<fir::ExtendedValue>);
void genRandomSeed(llvm::ArrayRef<fir::ExtendedValue>);
+ fir::ExtendedValue genScan(mlir::Type, llvm::ArrayRef<fir::ExtendedValue>);
mlir::Value genSetExponent(mlir::Type resultType,
llvm::ArrayRef<mlir::Value> args);
fir::ExtendedValue genSize(mlir::Type, llvm::ArrayRef<fir::ExtendedValue>);
@@ -495,6 +496,7 @@ struct IntrinsicLibrary {
llvm::ArrayRef<fir::ExtendedValue>);
fir::ExtendedValue genUbound(mlir::Type, llvm::ArrayRef<fir::ExtendedValue>);
fir::ExtendedValue genUnpack(mlir::Type, llvm::ArrayRef<fir::ExtendedValue>);
+ fir::ExtendedValue genVerify(mlir::Type, llvm::ArrayRef<fir::ExtendedValue>);
/// Define the
diff erent FIR generators that can be mapped to intrinsic to
/// generate the related code.
@@ -727,6 +729,13 @@ static constexpr IntrinsicHandler handlers[]{
&I::genRandomSeed,
{{{"size", asBox}, {"put", asBox}, {"get", asBox}}},
/*isElemental=*/false},
+ {"scan",
+ &I::genScan,
+ {{{"string", asAddr},
+ {"set", asAddr},
+ {"back", asValue, handleDynamicOptional},
+ {"kind", asValue}}},
+ /*isElemental=*/true},
{"set_exponent", &I::genSetExponent},
{"size",
&I::genSize,
@@ -756,6 +765,13 @@ static constexpr IntrinsicHandler handlers[]{
&I::genUnpack,
{{{"vector", asBox}, {"mask", asBox}, {"field", asBox}}},
/*isElemental=*/false},
+ {"verify",
+ &I::genVerify,
+ {{{"string", asAddr},
+ {"set", asAddr},
+ {"back", asValue, handleDynamicOptional},
+ {"kind", asValue}}},
+ /*isElemental=*/true},
};
static const IntrinsicHandler *findIntrinsicHandler(llvm::StringRef name) {
@@ -2485,6 +2501,83 @@ void IntrinsicLibrary::genRandomSeed(llvm::ArrayRef<fir::ExtendedValue> args) {
Fortran::lower::genRandomSeed(builder, loc, -1, mlir::Value{});
}
+// SCAN
+fir::ExtendedValue
+IntrinsicLibrary::genScan(mlir::Type resultType,
+ llvm::ArrayRef<fir::ExtendedValue> args) {
+
+ assert(args.size() == 4);
+
+ if (isAbsent(args[3])) {
+ // Kind not specified, so call scan/verify runtime routine that is
+ // specialized on the kind of characters in string.
+
+ // Handle required string base arg
+ mlir::Value stringBase = fir::getBase(args[0]);
+
+ // Handle required set string base arg
+ mlir::Value setBase = fir::getBase(args[1]);
+
+ // Handle kind argument; it is the kind of character in this case
+ fir::KindTy kind =
+ fir::factory::CharacterExprHelper{builder, loc}.getCharacterKind(
+ stringBase.getType());
+
+ // Get string length argument
+ mlir::Value stringLen = fir::getLen(args[0]);
+
+ // Get set string length argument
+ mlir::Value setLen = fir::getLen(args[1]);
+
+ // Handle optional back argument
+ mlir::Value back =
+ isAbsent(args[2])
+ ? builder.createIntegerConstant(loc, builder.getI1Type(), 0)
+ : fir::getBase(args[2]);
+
+ return builder.createConvert(loc, resultType,
+ fir::runtime::genScan(builder, loc, kind,
+ stringBase, stringLen,
+ setBase, setLen, back));
+ }
+ // else use the runtime descriptor version of scan/verify
+
+ // Handle optional argument, back
+ auto makeRefThenEmbox = [&](mlir::Value b) {
+ fir::LogicalType logTy = fir::LogicalType::get(
+ builder.getContext(), builder.getKindMap().defaultLogicalKind());
+ mlir::Value temp = builder.createTemporary(loc, logTy);
+ mlir::Value castb = builder.createConvert(loc, logTy, b);
+ builder.create<fir::StoreOp>(loc, castb, temp);
+ return builder.createBox(loc, temp);
+ };
+ mlir::Value back = fir::isUnboxedValue(args[2])
+ ? makeRefThenEmbox(*args[2].getUnboxed())
+ : builder.create<fir::AbsentOp>(
+ loc, fir::BoxType::get(builder.getI1Type()));
+
+ // Handle required string argument
+ mlir::Value string = builder.createBox(loc, args[0]);
+
+ // Handle required set argument
+ mlir::Value set = builder.createBox(loc, args[1]);
+
+ // Handle kind argument
+ mlir::Value kind = fir::getBase(args[3]);
+
+ // Create result descriptor
+ fir::MutableBoxValue resultMutableBox =
+ fir::factory::createTempMutableBox(builder, loc, resultType);
+ mlir::Value resultIrBox =
+ fir::factory::getMutableIRBox(builder, loc, resultMutableBox);
+
+ fir::runtime::genScanDescriptor(builder, loc, resultIrBox, string, set, back,
+ kind);
+
+ // Handle cleanup of allocatable result descriptor and return
+ return readAndAddCleanUp(resultMutableBox, resultType, "SCAN");
+}
+
// SET_EXPONENT
mlir::Value IntrinsicLibrary::genSetExponent(mlir::Type resultType,
llvm::ArrayRef<mlir::Value> args) {
@@ -2710,6 +2803,83 @@ IntrinsicLibrary::genUnpack(mlir::Type resultType,
"unexpected result for UNPACK");
}
+// VERIFY
+fir::ExtendedValue
+IntrinsicLibrary::genVerify(mlir::Type resultType,
+ llvm::ArrayRef<fir::ExtendedValue> args) {
+
+ assert(args.size() == 4);
+
+ if (isAbsent(args[3])) {
+ // Kind not specified, so call scan/verify runtime routine that is
+ // specialized on the kind of characters in string.
+
+ // Handle required string base arg
+ mlir::Value stringBase = fir::getBase(args[0]);
+
+ // Handle required set string base arg
+ mlir::Value setBase = fir::getBase(args[1]);
+
+ // Handle kind argument; it is the kind of character in this case
+ fir::KindTy kind =
+ fir::factory::CharacterExprHelper{builder, loc}.getCharacterKind(
+ stringBase.getType());
+
+ // Get string length argument
+ mlir::Value stringLen = fir::getLen(args[0]);
+
+ // Get set string length argument
+ mlir::Value setLen = fir::getLen(args[1]);
+
+ // Handle optional back argument
+ mlir::Value back =
+ isAbsent(args[2])
+ ? builder.createIntegerConstant(loc, builder.getI1Type(), 0)
+ : fir::getBase(args[2]);
+
+ return builder.createConvert(
+ loc, resultType,
+ fir::runtime::genVerify(builder, loc, kind, stringBase, stringLen,
+ setBase, setLen, back));
+ }
+ // else use the runtime descriptor version of scan/verify
+
+ // Handle optional argument, back
+ auto makeRefThenEmbox = [&](mlir::Value b) {
+ fir::LogicalType logTy = fir::LogicalType::get(
+ builder.getContext(), builder.getKindMap().defaultLogicalKind());
+ mlir::Value temp = builder.createTemporary(loc, logTy);
+ mlir::Value castb = builder.createConvert(loc, logTy, b);
+ builder.create<fir::StoreOp>(loc, castb, temp);
+ return builder.createBox(loc, temp);
+ };
+ mlir::Value back = fir::isUnboxedValue(args[2])
+ ? makeRefThenEmbox(*args[2].getUnboxed())
+ : builder.create<fir::AbsentOp>(
+ loc, fir::BoxType::get(builder.getI1Type()));
+
+ // Handle required string argument
+ mlir::Value string = builder.createBox(loc, args[0]);
+
+ // Handle required set argument
+ mlir::Value set = builder.createBox(loc, args[1]);
+
+ // Handle kind argument
+ mlir::Value kind = fir::getBase(args[3]);
+
+ // Create result descriptor
+ fir::MutableBoxValue resultMutableBox =
+ fir::factory::createTempMutableBox(builder, loc, resultType);
+ mlir::Value resultIrBox =
+ fir::factory::getMutableIRBox(builder, loc, resultMutableBox);
+
+ fir::runtime::genVerifyDescriptor(builder, loc, resultIrBox, string, set,
+ back, kind);
+
+ // Handle cleanup of allocatable result descriptor and return
+ return readAndAddCleanUp(resultMutableBox, resultType, "VERIFY");
+}
+
//===----------------------------------------------------------------------===//
// Argument lowering rules interface
//===----------------------------------------------------------------------===//
diff --git a/flang/test/Lower/Intrinsics/scan.f90 b/flang/test/Lower/Intrinsics/scan.f90
new file mode 100644
index 0000000000000..4f9191398474f
--- /dev/null
+++ b/flang/test/Lower/Intrinsics/scan.f90
@@ -0,0 +1,91 @@
+! RUN: bbc -emit-fir %s -o - | FileCheck %s
+
+! CHECK-LABEL: func @_QPscan_test(
+! CHECK-SAME: %[[s:[^:]+]]: !fir.boxchar<1>{{.*}}, %[[ss:[^:]+]]: !fir.boxchar<1>{{.*}}) -> i32
+integer function scan_test(s1, s2)
+character(*) :: s1, s2
+! CHECK: %[[tmpBox:.*]] = fir.alloca !fir.box<!fir.heap<i32>>
+! CHECK-DAG: %[[c:.*]]:2 = fir.unboxchar %[[s]] : (!fir.boxchar<1>) -> (!fir.ref<!fir.char<1,?>>, index)
+! CHECK-DAG: %[[cBox:.*]] = fir.embox %[[c]]#0 typeparams %[[c]]#1 : (!fir.ref<!fir.char<1,?>>, index) -> !fir.box<!fir.char<1,?>>
+! CHECK-DAG: %[[cBoxNone:.*]] = fir.convert %[[cBox]] : (!fir.box<!fir.char<1,?>>) -> !fir.box<none>
+! CHECK-DAG: %[[c2:.*]]:2 = fir.unboxchar %[[ss]] : (!fir.boxchar<1>) -> (!fir.ref<!fir.char<1,?>>, index)
+! CHECK-DAG: %[[cBox2:.*]] = fir.embox %[[c2]]#0 typeparams %[[c2]]#1 : (!fir.ref<!fir.char<1,?>>, index) -> !fir.box<!fir.char<1,?>>
+! CHECK-DAG: %[[cBoxNone2:.*]] = fir.convert %[[cBox2]] : (!fir.box<!fir.char<1,?>>) -> !fir.box<none>
+! CHECK-DAG: %[[backOptBox:.*]] = fir.absent !fir.box<i1>
+! CHECK-DAG: %[[backBox:.*]] = fir.convert %[[backOptBox]] : (!fir.box<i1>) -> !fir.box<none>
+! CHECK-DAG: %[[kindConstant:.*]] = arith.constant 4 : i32
+! CHECK-DAG: %[[resBox:.*]] = fir.convert %[[tmpBox:.*]] : (!fir.ref<!fir.box<!fir.heap<i32>>>) -> !fir.ref<!fir.box<none>>
+! CHECK: fir.call @{{.*}}Scan(%[[resBox]], %[[cBoxNone]], %[[cBoxNone2]], %[[backBox]], %[[kindConstant]], {{.*}}) : (!fir.ref<!fir.box<none>>, !fir.box<none>, !fir.box<none>, !fir.box<none>, i32, !fir.ref<i8>, i32) -> none
+scan_test = scan(s1, s2, kind=4)
+! CHECK-DAG: %[[tmpAddr:.*]] = fir.box_addr
+! CHECK: fir.freemem %[[tmpAddr]]
+end function scan_test
+
+! CHECK-LABEL: func @_QPscan_test2(
+! CHECK-SAME: %[[s:[^:]+]]: !fir.boxchar<1>{{.*}},
+! CHECK-SAME: %[[ss:[^:]+]]: !fir.boxchar<1>{{.*}}) -> i32
+integer function scan_test2(s1, s2)
+character(*) :: s1, s2
+! CHECK: %[[st:[^:]*]]:2 = fir.unboxchar %[[s]] : (!fir.boxchar<1>) -> (!fir.ref<!fir.char<1,?>>, index)
+! CHECK: %[[sst:[^:]*]]:2 = fir.unboxchar %[[ss]] : (!fir.boxchar<1>) -> (!fir.ref<!fir.char<1,?>>, index)
+! CHECK: %[[a1:.*]] = fir.convert %[[st]]#0 : (!fir.ref<!fir.char<1,?>>) -> !fir.ref<i8>
+! CHECK: %[[a2:.*]] = fir.convert %[[st]]#1 : (index) -> i64
+! CHECK: %[[a3:.*]] = fir.convert %[[sst]]#0 : (!fir.ref<!fir.char<1,?>>) -> !fir.ref<i8>
+! CHECK: %[[a4:.*]] = fir.convert %[[sst]]#1 : (index) -> i64
+! CHECK: = fir.call @_FortranAScan1(%[[a1]], %[[a2]], %[[a3]], %[[a4]], %{{.*}}) : (!fir.ref<i8>, i64, !fir.ref<i8>, i64, i1) -> i64
+scan_test2 = scan(s1, s2, .true.)
+end function scan_test2
+
+! CHECK-LABEL: func @_QPtest_optional(
+! CHECK-SAME: %[[VAL_0:.*]]: !fir.box<!fir.array<?x!fir.char<1,?>>>
+! CHECK-SAME: %[[VAL_1:.*]]: !fir.boxchar<1>
+! CHECK-SAME: %[[VAL_2:.*]]: !fir.box<!fir.array<?x!fir.logical<4>>>
+subroutine test_optional(string, set, back)
+character (*) :: string(:), set
+logical, optional :: back(:)
+print *, scan(string, set, back)
+! CHECK: %[[VAL_11:.*]] = fir.is_present %[[VAL_2]] : (!fir.box<!fir.array<?x!fir.logical<4>>>) -> i1
+! CHECK: %[[VAL_12:.*]] = fir.zero_bits !fir.ref<!fir.array<?x!fir.logical<4>>>
+! CHECK: %[[VAL_13:.*]] = arith.constant 0 : index
+! CHECK: %[[VAL_14:.*]] = fir.shape %[[VAL_13]] : (index) -> !fir.shape<1>
+! CHECK: %[[VAL_15:.*]] = fir.embox %[[VAL_12]](%[[VAL_14]]) : (!fir.ref<!fir.array<?x!fir.logical<4>>>, !fir.shape<1>) -> !fir.box<!fir.array<?x!fir.logical<4>>>
+! CHECK: %[[VAL_16:.*]] = arith.select %[[VAL_11]], %[[VAL_2]], %[[VAL_15]] : !fir.box<!fir.array<?x!fir.logical<4>>>
+! CHECK: %[[VAL_17:.*]] = fir.array_load %[[VAL_16]] {fir.optional} : (!fir.box<!fir.array<?x!fir.logical<4>>>) -> !fir.array<?x!fir.logical<4>>
+! CHECK: fir.do_loop %[[VAL_25:.*]] = %{{.*}} to %{{.*}} step %{{.*}} unordered iter_args(%{{.*}} = %{{.*}}) -> (!fir.array<?xi32>) {
+! CHECK: %[[VAL_31:.*]] = fir.if %[[VAL_11]] -> (!fir.logical<4>) {
+ ! CHECK: %[[VAL_32:.*]] = fir.array_fetch %[[VAL_17]], %[[VAL_25]] : (!fir.array<?x!fir.logical<4>>, index) -> !fir.logical<4>
+ ! CHECK: fir.result %[[VAL_32]] : !fir.logical<4>
+! CHECK: } else {
+ ! CHECK: %[[VAL_33:.*]] = arith.constant false
+ ! CHECK: %[[VAL_34:.*]] = fir.convert %[[VAL_33]] : (i1) -> !fir.logical<4>
+ ! CHECK: fir.result %[[VAL_34]] : !fir.logical<4>
+! CHECK: }
+! CHECK: %[[VAL_39:.*]] = fir.convert %[[VAL_31]] : (!fir.logical<4>) -> i1
+! CHECK: fir.call @_FortranAScan1(%{{.*}}, %{{.*}}, %{{.*}}, %{{.*}}, %[[VAL_39]]) : (!fir.ref<i8>, i64, !fir.ref<i8>, i64, i1) -> i64
+! CHECK: }
+! CHECK: fir.array_merge_store
+end subroutine
+
+! CHECK-LABEL: func @_QPtest_optional_scalar(
+! CHECK-SAME: %[[VAL_0:.*]]: !fir.box<!fir.array<?x!fir.char<1,?>>>
+! CHECK-SAME: %[[VAL_1:.*]]: !fir.boxchar<1>
+! CHECK-SAME: %[[VAL_2:.*]]: !fir.ref<!fir.logical<4>>
+subroutine test_optional_scalar(string, set, back)
+character (*) :: string(:), set
+logical, optional :: back
+print *, scan(string, set, back)
+! CHECK: %[[VAL_11:.*]] = fir.is_present %[[VAL_2]] : (!fir.ref<!fir.logical<4>>) -> i1
+! CHECK: %[[VAL_12:.*]] = fir.if %[[VAL_11]] -> (!fir.logical<4>) {
+! CHECK: %[[VAL_13:.*]] = fir.load %[[VAL_2]] : !fir.ref<!fir.logical<4>>
+! CHECK: fir.result %[[VAL_13]] : !fir.logical<4>
+! CHECK: } else {
+! CHECK: %[[VAL_14:.*]] = arith.constant false
+! CHECK: %[[VAL_15:.*]] = fir.convert %[[VAL_14]] : (i1) -> !fir.logical<4>
+! CHECK: fir.result %[[VAL_15]] : !fir.logical<4>
+! CHECK: }
+! CHECK: fir.do_loop %{{.*}} = %{{.*}} to %{{.*}} step %{{.*}} unordered iter_args(%{{.*}} = %{{.*}}) -> (!fir.array<?xi32>) {
+! CHECK: %[[VAL_39:.*]] = fir.convert %[[VAL_12]] : (!fir.logical<4>) -> i1
+! CHECK: fir.call @_FortranAScan1(%{{.*}}, %{{.*}}, %{{.*}}, %{{.*}}, %[[VAL_39]]) : (!fir.ref<i8>, i64, !fir.ref<i8>, i64, i1) -> i64
+! CHECK: }
+! CHECK: fir.array_merge_store
+end subroutine
diff --git a/flang/test/Lower/Intrinsics/verify.f90 b/flang/test/Lower/Intrinsics/verify.f90
new file mode 100644
index 0000000000000..30bd5aff9ff13
--- /dev/null
+++ b/flang/test/Lower/Intrinsics/verify.f90
@@ -0,0 +1,87 @@
+! RUN: bbc -emit-fir %s -o - | FileCheck %s
+
+! CHECK-LABEL: func @_QPverify_test(
+! CHECK-SAME: %[[VAL_0:.*]]: !fir.boxchar<1>{{.*}}, %[[VAL_1:.*]]: !fir.boxchar<1>{{.*}}) -> i32 {
+integer function verify_test(s1, s2)
+! CHECK: %[[VAL_2:.*]] = fir.alloca !fir.box<!fir.heap<i32>>
+! CHECK: %[[VAL_3:.*]]:2 = fir.unboxchar %[[VAL_0]] : (!fir.boxchar<1>) -> (!fir.ref<!fir.char<1,?>>, index)
+! CHECK: %[[VAL_4:.*]]:2 = fir.unboxchar %[[VAL_1]] : (!fir.boxchar<1>) -> (!fir.ref<!fir.char<1,?>>, index)
+! CHECK: %[[VAL_5:.*]] = fir.alloca i32 {bindc_name = "verify_test", uniq_name = "_QFverify_testEverify_test"}
+! CHECK: %[[VAL_6:.*]] = arith.constant 4 : i32
+! CHECK: %[[VAL_7:.*]] = fir.absent !fir.box<i1>
+! CHECK: %[[VAL_8:.*]] = fir.embox %[[VAL_3]]#0 typeparams %[[VAL_3]]#1 : (!fir.ref<!fir.char<1,?>>, index) -> !fir.box<!fir.char<1,?>>
+! CHECK: %[[VAL_9:.*]] = fir.embox %[[VAL_4]]#0 typeparams %[[VAL_4]]#1 : (!fir.ref<!fir.char<1,?>>, index) -> !fir.box<!fir.char<1,?>>
+! CHECK: %[[VAL_10:.*]] = fir.zero_bits !fir.heap<i32>
+! CHECK: %[[VAL_11:.*]] = fir.embox %[[VAL_10]] : (!fir.heap<i32>) -> !fir.box<!fir.heap<i32>>
+! CHECK: fir.store %[[VAL_11]] to %[[VAL_2]] : !fir.ref<!fir.box<!fir.heap<i32>>>
+! CHECK: %[[VAL_12:.*]] = fir.address_of(@_QQcl.{{[0-9a-z]+}}) : !fir.ref<!fir.char<1,{{[0-9]*}}>>
+! CHECK: %[[VAL_13:.*]] = arith.constant {{[0-9]+}} : i32
+! CHECK: %[[VAL_14:.*]] = fir.convert %[[VAL_2]] : (!fir.ref<!fir.box<!fir.heap<i32>>>) -> !fir.ref<!fir.box<none>>
+! CHECK: %[[VAL_15:.*]] = fir.convert %[[VAL_8]] : (!fir.box<!fir.char<1,?>>) -> !fir.box<none>
+! CHECK: %[[VAL_16:.*]] = fir.convert %[[VAL_9]] : (!fir.box<!fir.char<1,?>>) -> !fir.box<none>
+! CHECK: %[[VAL_17:.*]] = fir.convert %[[VAL_7]] : (!fir.box<i1>) -> !fir.box<none>
+! CHECK: %[[VAL_18:.*]] = fir.convert %[[VAL_12]] : (!fir.ref<!fir.char<1,{{[0-9]*}}>>) -> !fir.ref<i8>
+! CHECK: %[[VAL_19:.*]] = fir.call @_FortranAVerify(%[[VAL_14]], %[[VAL_15]], %[[VAL_16]], %[[VAL_17]], %[[VAL_6]], %[[VAL_18]], %[[VAL_13]]) : (!fir.ref<!fir.box<none>>, !fir.box<none>, !fir.box<none>, !fir.box<none>, i32, !fir.ref<i8>, i32) -> none
+! CHECK: %[[VAL_20:.*]] = fir.load %[[VAL_2]] : !fir.ref<!fir.box<!fir.heap<i32>>>
+! CHECK: %[[VAL_21:.*]] = fir.box_addr %[[VAL_20]] : (!fir.box<!fir.heap<i32>>) -> !fir.heap<i32>
+! CHECK: %[[VAL_22:.*]] = fir.load %[[VAL_21]] : !fir.heap<i32>
+! CHECK: fir.store %[[VAL_22]] to %[[VAL_5]] : !fir.ref<i32>
+! CHECK: fir.freemem %[[VAL_21]]
+! CHECK: %[[VAL_23:.*]] = fir.load %[[VAL_5]] : !fir.ref<i32>
+! CHECK: return %[[VAL_23]] : i32
+ character(*) :: s1, s2
+ verify_test = verify(s1, s2, kind=4)
+end function verify_test
+
+! CHECK-LABEL: func @_QPverify_test2(
+! CHECK-SAME: %[[VAL_0:.*]]: !fir.boxchar<1>{{.*}}, %[[VAL_1:.*]]: !fir.boxchar<1>{{.*}}) -> i32 {
+integer function verify_test2(s1, s2)
+! CHECK: %[[VAL_2:.*]]:2 = fir.unboxchar %[[VAL_0]] : (!fir.boxchar<1>) -> (!fir.ref<!fir.char<1,?>>, index)
+! CHECK: %[[VAL_3:.*]]:2 = fir.unboxchar %[[VAL_1]] : (!fir.boxchar<1>) -> (!fir.ref<!fir.char<1,?>>, index)
+! CHECK: %[[VAL_4:.*]] = fir.alloca i32 {bindc_name = "verify_test2", uniq_name = "_QFverify_test2Everify_test2"}
+! CHECK: %[[VAL_5:.*]] = arith.constant true
+! CHECK: %[[VAL_6:.*]] = fir.convert %[[VAL_2]]#0 : (!fir.ref<!fir.char<1,?>>) -> !fir.ref<i8>
+! CHECK: %[[VAL_7:.*]] = fir.convert %[[VAL_2]]#1 : (index) -> i64
+! CHECK: %[[VAL_8:.*]] = fir.convert %[[VAL_3]]#0 : (!fir.ref<!fir.char<1,?>>) -> !fir.ref<i8>
+! CHECK: %[[VAL_9:.*]] = fir.convert %[[VAL_3]]#1 : (index) -> i64
+! CHECK: %[[VAL_10:.*]] = fir.call @_FortranAVerify1(%[[VAL_6]], %[[VAL_7]], %[[VAL_8]], %[[VAL_9]], %[[VAL_5]]) : (!fir.ref<i8>, i64, !fir.ref<i8>, i64, i1) -> i64
+! CHECK: %[[VAL_11:.*]] = fir.convert %[[VAL_10]] : (i64) -> i32
+! CHECK: fir.store %[[VAL_11]] to %[[VAL_4]] : !fir.ref<i32>
+! CHECK: %[[VAL_12:.*]] = fir.load %[[VAL_4]] : !fir.ref<i32>
+! CHECK: return %[[VAL_12]] : i32
+ character(*) :: s1, s2
+ verify_test2 = verify(s1, s2, .true.)
+end function verify_test2
+
+! CHECK-LABEL: func @_QPtest_optional(
+! CHECK-SAME: %[[VAL_0:.*]]: !fir.box<!fir.array<?x!fir.char<1,?>>>
+! CHECK-SAME: %[[VAL_1:.*]]: !fir.boxchar<1>
+! CHECK-SAME: %[[VAL_2:.*]]: !fir.box<!fir.array<?x!fir.logical<4>>>
+subroutine test_optional(string, set, back)
+ character (*) :: string(:), set
+ logical, optional :: back(:)
+ print *, verify(string, set, back)
+! CHECK: %[[VAL_11:.*]] = fir.is_present %[[VAL_2]] : (!fir.box<!fir.array<?x!fir.logical<4>>>) -> i1
+! CHECK: %[[VAL_12:.*]] = fir.zero_bits !fir.ref<!fir.array<?x!fir.logical<4>>>
+! CHECK: %[[VAL_13:.*]] = arith.constant 0 : index
+! CHECK: %[[VAL_14:.*]] = fir.shape %[[VAL_13]] : (index) -> !fir.shape<1>
+! CHECK: %[[VAL_15:.*]] = fir.embox %[[VAL_12]](%[[VAL_14]]) : (!fir.ref<!fir.array<?x!fir.logical<4>>>, !fir.shape<1>) -> !fir.box<!fir.array<?x!fir.logical<4>>>
+! CHECK: %[[VAL_16:.*]] = arith.select %[[VAL_11]], %[[VAL_2]], %[[VAL_15]] : !fir.box<!fir.array<?x!fir.logical<4>>>
+! CHECK: %[[VAL_17:.*]] = fir.array_load %[[VAL_16]] {fir.optional} : (!fir.box<!fir.array<?x!fir.logical<4>>>) -> !fir.array<?x!fir.logical<4>>
+! CHECK: %[[VAL_24:.*]] = fir.do_loop %[[VAL_25:.*]] = %{{.*}} to %{{.*}} step %{{.*}} unordered iter_args(%[[VAL_26:.*]] = %{{.*}}) -> (!fir.array<?xi32>) {
+ ! CHECK: %[[VAL_31:.*]] = fir.if %[[VAL_11]] -> (!fir.logical<4>) {
+ ! CHECK: %[[VAL_32:.*]] = fir.array_fetch %[[VAL_17]], %[[VAL_25]] : (!fir.array<?x!fir.logical<4>>, index) -> !fir.logical<4>
+ ! CHECK: fir.result %[[VAL_32]] : !fir.logical<4>
+ ! CHECK: } else {
+ ! CHECK: %[[VAL_33:.*]] = arith.constant false
+ ! CHECK: %[[VAL_34:.*]] = fir.convert %[[VAL_33]] : (i1) -> !fir.logical<4>
+ ! CHECK: fir.result %[[VAL_34]] : !fir.logical<4>
+ ! CHECK: }
+ ! CHECK: %[[VAL_39:.*]] = fir.convert %[[VAL_31]] : (!fir.logical<4>) -> i1
+ ! CHECK: fir.call @_FortranAVerify1(%{{.*}}, %{{.*}}, %{{.*}}, %{{.*}}, %[[VAL_39]]) : (!fir.ref<i8>, i64, !fir.ref<i8>, i64, i1) -> i64
+! CHECK: }
+! CHECK: fir.array_merge_store
+end subroutine
+
+! CHECK: func private @{{.*}}Verify(
+! CHECK: func private @{{.*}}Verify1(
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