xref: /llvm-project/clang/lib/CIR/CodeGen/CIRGenerator.cpp (revision 7eb73b95cb336cde14d5c755a09cd880bd3d5df9)
1 //===--- CIRGenerator.cpp - Emit CIR from ASTs ----------------------------===//
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 // This builds an AST and converts it to CIR.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "CIRGenModule.h"
14 
15 #include "mlir/IR/MLIRContext.h"
16 
17 #include "clang/AST/DeclGroup.h"
18 #include "clang/CIR/CIRGenerator.h"
19 #include "clang/CIR/Dialect/IR/CIRDialect.h"
20 
21 using namespace cir;
22 using namespace clang;
23 
24 void CIRGenerator::anchor() {}
25 
26 CIRGenerator::CIRGenerator(clang::DiagnosticsEngine &diags,
27                            llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> vfs,
28                            const CodeGenOptions &cgo)
29     : diags(diags), fs(std::move(vfs)), codeGenOpts{cgo} {}
30 CIRGenerator::~CIRGenerator() = default;
31 
32 void CIRGenerator::Initialize(ASTContext &astContext) {
33   using namespace llvm;
34 
35   this->astContext = &astContext;
36 
37   mlirContext = std::make_unique<mlir::MLIRContext>();
38   mlirContext->loadDialect<cir::CIRDialect>();
39   cgm = std::make_unique<clang::CIRGen::CIRGenModule>(
40       *mlirContext.get(), astContext, codeGenOpts, diags);
41 }
42 
43 mlir::ModuleOp CIRGenerator::getModule() const { return cgm->getModule(); }
44 
45 bool CIRGenerator::HandleTopLevelDecl(DeclGroupRef group) {
46 
47   for (Decl *decl : group)
48     cgm->emitTopLevelDecl(decl);
49 
50   return true;
51 }
52