1//===-- FIRDialect.cpp ----------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// Coding style: https://mlir.llvm.org/getting_started/DeveloperGuide/
10//
11//===----------------------------------------------------------------------===//
12
13#include "flang/Optimizer/Dialect/FIRDialect.h"
14#include "flang/Optimizer/Dialect/CUF/Attributes/CUFAttr.h"
15#include "flang/Optimizer/Dialect/FIRAttr.h"
16#include "flang/Optimizer/Dialect/FIROps.h"
17#include "flang/Optimizer/Dialect/FIRType.h"
18#include "mlir/Dialect/LLVMIR/LLVMDialect.h"
19#include "mlir/Target/LLVMIR/ModuleTranslation.h"
20#include "mlir/Transforms/InliningUtils.h"
21
22#include "flang/Optimizer/Dialect/FIRDialect.cpp.inc"
23
24using namespace fir;
25
26namespace {
27/// This class defines the interface for handling inlining of FIR calls.
28struct FIRInlinerInterface : public mlir::DialectInlinerInterface {
29 using DialectInlinerInterface::DialectInlinerInterface;
30
31 bool isLegalToInline(mlir::Operation *call, mlir::Operation *callable,
32 bool wouldBeCloned) const final {
33 return fir::canLegallyInline(call, callable, wouldBeCloned);
34 }
35
36 /// This hook checks to see if the operation `op` is legal to inline into the
37 /// given region `reg`.
38 bool isLegalToInline(mlir::Operation *op, mlir::Region *reg,
39 bool wouldBeCloned, mlir::IRMapping &map) const final {
40 return fir::canLegallyInline(op, reg, wouldBeCloned, map);
41 }
42
43 /// This hook is called when a terminator operation has been inlined.
44 /// We handle the return (a Fortran FUNCTION) by replacing the values
45 /// previously returned by the call operation with the operands of the
46 /// return.
47 void handleTerminator(mlir::Operation *op,
48 mlir::ValueRange valuesToRepl) const final {
49 auto returnOp = llvm::cast<mlir::func::ReturnOp>(op);
50 assert(returnOp.getNumOperands() == valuesToRepl.size());
51 for (const auto &it : llvm::enumerate(returnOp.getOperands()))
52 valuesToRepl[it.index()].replaceAllUsesWith(it.value());
53 }
54
55 mlir::Operation *materializeCallConversion(mlir::OpBuilder &builder,
56 mlir::Value input,
57 mlir::Type resultType,
58 mlir::Location loc) const final {
59 return builder.create<fir::ConvertOp>(loc, resultType, input);
60 }
61};
62} // namespace
63
64void fir::FIROpsDialect::initialize() {
65 registerTypes();
66 registerAttributes();
67 addOperations<
68#define GET_OP_LIST
69#include "flang/Optimizer/Dialect/FIROps.cpp.inc"
70 >();
71 registerOpExternalInterfaces();
72}
73
74// Register the FIRInlinerInterface to FIROpsDialect
75void fir::addFIRInlinerExtension(mlir::DialectRegistry &registry) {
76 registry.addExtension(
77 +[](mlir::MLIRContext *ctx, fir::FIROpsDialect *dialect) {
78 dialect->addInterface<FIRInlinerInterface>();
79 });
80}
81
82// We do not provide LLVMTranslationDialectInterface implementation
83// for FIR dialect, since at the point of translation to LLVM IR
84// there should not be any FIR operations (the CodeGen converts
85// them to LLVMIR dialect operations).
86// Here we register the default implementation of
87// LLVMTranslationDialectInterface that will drop all FIR dialect
88// attributes - this helps to avoid warnings about unhandled attributes.
89// We can provide our own implementation of the interface,
90// when more sophisticated translation is required.
91void fir::addFIRToLLVMIRExtension(mlir::DialectRegistry &registry) {
92 registry.addExtension(
93 +[](mlir::MLIRContext *ctx, fir::FIROpsDialect *dialect) {
94 dialect->addInterface<mlir::LLVMTranslationDialectInterface>();
95 });
96}
97
98mlir::Type fir::FIROpsDialect::parseType(mlir::DialectAsmParser &parser) const {
99 return parseFirType(const_cast<FIROpsDialect *>(this), parser);
100}
101
102void fir::FIROpsDialect::printType(mlir::Type ty,
103 mlir::DialectAsmPrinter &p) const {
104 return printFirType(const_cast<FIROpsDialect *>(this), ty, p);
105}
106
107mlir::Attribute
108fir::FIROpsDialect::parseAttribute(mlir::DialectAsmParser &parser,
109 mlir::Type type) const {
110 return parseFirAttribute(const_cast<FIROpsDialect *>(this), parser, type);
111}
112
113void fir::FIROpsDialect::printAttribute(mlir::Attribute attr,
114 mlir::DialectAsmPrinter &p) const {
115 printFirAttribute(const_cast<FIROpsDialect *>(this), attr, p);
116}
117

source code of flang/lib/Optimizer/Dialect/FIRDialect.cpp