1bb52e9462
Build out the necessary infrastructure for the main entry point into ClangIR generation -- CIRGenModule. A set of boilerplate classes exist to facilitate this -- CIRGenerator, CIRGenAction, EmitCIRAction and CIRGenConsumer. These all mirror the corresponding types from LLVM generation by Clang's CodeGen. The main entry point to CIR generation is `CIRGenModule::buildTopLevelDecl`. It is currently just an empty function. We've added a test to ensure that the pipeline reaches this point and doesn't fail, but does nothing else. This will be removed in one of the subsequent patches that'll add basic `cir.func` emission. This patch also re-adds `-emit-cir` to the driver. lib/Driver/Driver.cpp requires that a driver flag exists to facilirate the selection of the right actions for the driver to create. Without a driver flag you get the standard behaviors of `-S`, `-c`, etc. If we want to emit CIR IR and, eventually, bytecode we'll need a driver flag to force this. This is why `-emit-llvm` is a driver flag. Notably, `-emit-llvm-bc` as a cc1 flag doesn't ever do the right thing. Without a driver flag it is incorrectly ignored and an executable is emitted. With `-S` a file named `something.s` is emitted which actually contains bitcode. Reviewers: AaronBallman, MaskRay, bcardosolopes Reviewed By: bcardosolopes, AaronBallman Pull Request: https://github.com/llvm/llvm-project/pull/91007
63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
//===--- CIRGenModule.h - Per-Module state for CIR gen ----------*- C++ -*-===//
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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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// This is the internal per-translation-unit state used for CIR translation.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_LIB_CIR_CODEGEN_CIRGENMODULE_H
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#define LLVM_CLANG_LIB_CIR_CODEGEN_CIRGENMODULE_H
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#include "CIRGenTypeCache.h"
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#include "mlir/IR/BuiltinOps.h"
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#include "mlir/IR/MLIRContext.h"
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namespace clang {
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class ASTContext;
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class CodeGenOptions;
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class Decl;
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class DiagnosticsEngine;
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class LangOptions;
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class TargetInfo;
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} // namespace clang
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using namespace clang;
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namespace cir {
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/// This class organizes the cross-function state that is used while generating
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/// CIR code.
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class CIRGenModule : public CIRGenTypeCache {
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CIRGenModule(CIRGenModule &) = delete;
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CIRGenModule &operator=(CIRGenModule &) = delete;
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public:
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CIRGenModule(mlir::MLIRContext &context, clang::ASTContext &astctx,
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const clang::CodeGenOptions &cgo,
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clang::DiagnosticsEngine &diags);
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~CIRGenModule() = default;
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private:
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/// Hold Clang AST information.
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clang::ASTContext &astCtx;
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const clang::LangOptions &langOpts;
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/// A "module" matches a c/cpp source file: containing a list of functions.
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mlir::ModuleOp theModule;
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const clang::TargetInfo ⌖
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public:
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void buildTopLevelDecl(clang::Decl *decl);
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};
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} // namespace cir
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#endif // LLVM_CLANG_LIB_CIR_CODEGEN_CIRGENMODULE_H
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