da60b9e7dc
There are several observations regarding the copy-in/copy-out:
* Actual argument associated with INTENT(OUT) dummy argument that
requires finalization (7.5.6.3 p. 7) may be read by the finalization
function, so a copy-in is required.
* A temporary created for the copy-in/copy-out must be destroyed
without finalization after the call (or after the corresponding copy-out),
otherwise, memory leaks may occur.
* The copy-out assignment must not perform finalization for the LHS.
* The copy-out assignment from the temporary to the actual argument
may or may not need to initialize the LHS.
This change-set introduces new runtime methods: CopyOutAssign and
DestroyWithoutFinalization. They are called by the compiler generated
code to match the behavior described above.
Reviewed By: jeanPerier
Differential Revision: https://reviews.llvm.org/D151135
88 lines
4.2 KiB
C++
88 lines
4.2 KiB
C++
//===-- Assign.cpp -- generate assignment runtime API calls ---------------===//
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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/Optimizer/Builder/Runtime/Assign.h"
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#include "flang/Optimizer/Builder/FIRBuilder.h"
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#include "flang/Optimizer/Builder/Runtime/RTBuilder.h"
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#include "flang/Runtime/assign.h"
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using namespace Fortran::runtime;
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void fir::runtime::genAssign(fir::FirOpBuilder &builder, mlir::Location loc,
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mlir::Value destBox, mlir::Value sourceBox) {
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auto func = fir::runtime::getRuntimeFunc<mkRTKey(Assign)>(loc, builder);
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auto fTy = func.getFunctionType();
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auto sourceFile = fir::factory::locationToFilename(builder, loc);
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auto sourceLine =
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fir::factory::locationToLineNo(builder, loc, fTy.getInput(3));
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auto args = fir::runtime::createArguments(builder, loc, fTy, destBox,
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sourceBox, sourceFile, sourceLine);
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builder.create<fir::CallOp>(loc, func, args);
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}
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void fir::runtime::genAssignPolymorphic(fir::FirOpBuilder &builder,
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mlir::Location loc, mlir::Value destBox,
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mlir::Value sourceBox) {
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auto func =
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fir::runtime::getRuntimeFunc<mkRTKey(AssignPolymorphic)>(loc, builder);
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auto fTy = func.getFunctionType();
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auto sourceFile = fir::factory::locationToFilename(builder, loc);
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auto sourceLine =
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fir::factory::locationToLineNo(builder, loc, fTy.getInput(3));
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auto args = fir::runtime::createArguments(builder, loc, fTy, destBox,
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sourceBox, sourceFile, sourceLine);
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builder.create<fir::CallOp>(loc, func, args);
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}
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void fir::runtime::genAssignExplicitLengthCharacter(fir::FirOpBuilder &builder,
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mlir::Location loc,
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mlir::Value destBox,
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mlir::Value sourceBox) {
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auto func =
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fir::runtime::getRuntimeFunc<mkRTKey(AssignExplicitLengthCharacter)>(
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loc, builder);
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auto fTy = func.getFunctionType();
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auto sourceFile = fir::factory::locationToFilename(builder, loc);
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auto sourceLine =
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fir::factory::locationToLineNo(builder, loc, fTy.getInput(3));
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auto args = fir::runtime::createArguments(builder, loc, fTy, destBox,
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sourceBox, sourceFile, sourceLine);
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builder.create<fir::CallOp>(loc, func, args);
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}
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void fir::runtime::genAssignTemporary(fir::FirOpBuilder &builder,
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mlir::Location loc, mlir::Value destBox,
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mlir::Value sourceBox) {
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auto func =
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fir::runtime::getRuntimeFunc<mkRTKey(AssignTemporary)>(loc, builder);
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auto fTy = func.getFunctionType();
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auto sourceFile = fir::factory::locationToFilename(builder, loc);
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auto sourceLine =
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fir::factory::locationToLineNo(builder, loc, fTy.getInput(3));
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auto args = fir::runtime::createArguments(builder, loc, fTy, destBox,
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sourceBox, sourceFile, sourceLine);
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builder.create<fir::CallOp>(loc, func, args);
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}
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void fir::runtime::genCopyOutAssign(fir::FirOpBuilder &builder,
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mlir::Location loc, mlir::Value destBox,
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mlir::Value sourceBox, bool skipToInit) {
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auto func =
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fir::runtime::getRuntimeFunc<mkRTKey(CopyOutAssign)>(loc, builder);
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auto fTy = func.getFunctionType();
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auto sourceFile = fir::factory::locationToFilename(builder, loc);
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auto sourceLine =
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fir::factory::locationToLineNo(builder, loc, fTy.getInput(4));
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auto i1Ty = builder.getIntegerType(1);
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auto skipToInitVal = builder.createIntegerConstant(loc, i1Ty, skipToInit);
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auto args =
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fir::runtime::createArguments(builder, loc, fTy, destBox, sourceBox,
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skipToInitVal, sourceFile, sourceLine);
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builder.create<fir::CallOp>(loc, func, args);
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}
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