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[flang] Lower character related intrinsics

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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@nvidia.com>
Co-authored-by: mleair <leairmark@gmail.com>
Co-authored-by: Eric Schweitz <eschweitz@nvidia.com>
This commit is contained in:
Valentin Clement 2022-03-17 07:13:40 +01:00
parent ea0f8ecc43
commit cc38a4a665
No known key found for this signature in database
GPG Key ID: 086D54783C928776
3 changed files with 348 additions and 0 deletions
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170
flang/lib/Lower/IntrinsicCall.cpp
View File

@ -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 different 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
//===----------------------------------------------------------------------===//

91
flang/test/Lower/Intrinsics/scan.f90 Normal file
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@ -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

87
flang/test/Lower/Intrinsics/verify.f90 Normal file
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@ -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(