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f49d26bc77
Needed for SELECT RANK implementation. I want to stay away from generating the `rank > 0 && ...` logic in FIR codegen for now.
50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
//===-- runtime/support.cpp -----------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "flang/Runtime/support.h"
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#include "ISO_Fortran_util.h"
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#include "type-info.h"
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#include "flang/Runtime/descriptor.h"
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namespace Fortran::runtime {
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extern "C" {
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RT_EXT_API_GROUP_BEGIN
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bool RTDEF(IsContiguous)(const Descriptor &descriptor) {
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return descriptor.IsContiguous();
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}
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bool RTDEF(IsAssumedSize)(const Descriptor &descriptor) {
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return ISO::IsAssumedSize(&descriptor.raw());
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}
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void RTDEF(CopyAndUpdateDescriptor)(Descriptor &to, const Descriptor &from,
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const typeInfo::DerivedType *newDynamicType,
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ISO::CFI_attribute_t newAttribute, enum LowerBoundModifier newLowerBounds) {
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to = from;
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if (newDynamicType) {
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DescriptorAddendum *toAddendum{to.Addendum()};
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INTERNAL_CHECK(toAddendum);
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toAddendum->set_derivedType(newDynamicType);
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to.raw().elem_len = newDynamicType->sizeInBytes();
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}
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to.raw().attribute = newAttribute;
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if (newLowerBounds != LowerBoundModifier::Preserve) {
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const ISO::CFI_index_t newLowerBound{
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newLowerBounds == LowerBoundModifier::SetToOnes ? 1 : 0};
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const int rank{to.rank()};
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for (int i = 0; i < rank; ++i) {
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to.GetDimension(i).SetLowerBound(newLowerBound);
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}
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}
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}
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RT_EXT_API_GROUP_END
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} // extern "C"
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} // namespace Fortran::runtime
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