4ad7279392
Begin upstreaming of CUDA Fortran support in LLVM Flang.
This first patch implements parsing for CUDA Fortran syntax,
including:
- a new LanguageFeature enum value for CUDA Fortran
- driver change to enable that feature for *.cuf and *.CUF source files
- parse tree representation of CUDA Fortran syntax
- dumping and unparsing of the parse tree
- the actual parsers for CUDA Fortran syntax
- prescanning support for !@CUF and !$CUF
- basic sanity testing via unparsing and parse tree dumps
... along with any minimized changes elsewhere to make these
work, mostly no-op cases in common::visitors instances in
semantics and lowering to allow them to compile in the face
of new types in variant<> instances in the parse tree.
Because CUDA Fortran allows the kernel launch chevron syntax
("call foo<<<blocks, threads>>>()") only on CALL statements and
not on function references, the parse tree nodes for CallStmt,
FunctionReference, and their shared Call were rearranged a bit;
this caused a fair amount of one-line changes in many files.
More patches will follow that implement CUDA Fortran in the symbol
table and name resolution, and then semantic checking.
Differential Revision: https://reviews.llvm.org/D150159
56 lines
2.1 KiB
C++
56 lines
2.1 KiB
C++
//===- FrontendOptions.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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//
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// Coding style: https://mlir.llvm.org/getting_started/DeveloperGuide/
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//
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//===----------------------------------------------------------------------===//
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#include "flang/Frontend/FrontendOptions.h"
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using namespace Fortran::frontend;
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bool Fortran::frontend::isFixedFormSuffix(llvm::StringRef suffix) {
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// Note: Keep this list in-sync with flang/test/lit.cfg.py
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return suffix == "f77" || suffix == "f" || suffix == "F" || suffix == "ff" ||
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suffix == "for" || suffix == "FOR" || suffix == "fpp" ||
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suffix == "FPP";
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}
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bool Fortran::frontend::isFreeFormSuffix(llvm::StringRef suffix) {
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// Note: Keep this list in-sync with flang/test/lit.cfg.py
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return suffix == "f90" || suffix == "F90" || suffix == "ff90" ||
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suffix == "f95" || suffix == "F95" || suffix == "ff95" ||
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suffix == "f03" || suffix == "F03" || suffix == "f08" ||
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suffix == "F08" || suffix == "f18" || suffix == "F18" ||
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suffix == "cuf" || suffix == "CUF";
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}
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bool Fortran::frontend::isToBePreprocessed(llvm::StringRef suffix) {
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return suffix == "F" || suffix == "FOR" || suffix == "fpp" ||
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suffix == "FPP" || suffix == "F90" || suffix == "F95" ||
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suffix == "F03" || suffix == "F08" || suffix == "F18" ||
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suffix == "CUF";
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}
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bool Fortran::frontend::isCUDAFortranSuffix(llvm::StringRef suffix) {
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return suffix == "cuf" || suffix == "CUF";
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}
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InputKind FrontendOptions::getInputKindForExtension(llvm::StringRef extension) {
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if (isFixedFormSuffix(extension) || isFreeFormSuffix(extension)) {
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return Language::Fortran;
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}
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if (extension == "bc" || extension == "ll")
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return Language::LLVM_IR;
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if (extension == "fir" || extension == "mlir")
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return Language::MLIR;
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return Language::Unknown;
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}
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