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[flang] Add changes to codegen to convert it to tablegen passes. 

This upstreams changes to codegen to convert the passes to the new
tablegen pass support from MLIR.

Differential revision: https://reviews.llvm.org/D83018
This commit is contained in:
Eric Schweitz 2020-07-01 18:40:32 -07:00
parent 30bd66544d
commit ffa1f8198e
4 changed files with 44 additions and 7 deletions
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1
flang/include/flang/Optimizer/CMakeLists.txt
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@ -1 +1,2 @@
add_subdirectory(CodeGen)
add_subdirectory(Dialect)

24
flang/include/flang/Optimizer/CodeGen/CGPasses.td Normal file
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@ -0,0 +1,24 @@
//===-- CGPasses.td - code gen pass definition file --------*- tablegen -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file contains definitions for passes within the Optimizer/CodeGen/
// directory.
//
//===----------------------------------------------------------------------===//
#ifndef FLANG_OPTIMIZER_CODEGEN_PASSES
#define FLANG_OPTIMIZER_CODEGEN_PASSES
include "mlir/Pass/PassBase.td"
def CodeGenRewrite : FunctionPass<"cg-rewrite"> {
let summary = "Rewrite some FIR ops into their code-gen forms.";
let constructor = "fir::createFirCodeGenRewritePass()";
}
#endif // FLANG_OPTIMIZER_CODEGEN_PASSES

6
flang/include/flang/Optimizer/CodeGen/CMakeLists.txt Normal file
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@ -0,0 +1,6 @@
set(LLVM_TARGET_DEFINITIONS CGPasses.td)
mlir_tablegen(CGPasses.h.inc -gen-pass-decls)
add_public_tablegen_target(FIROptCodeGenPassIncGen)
add_mlir_doc(Passes -gen-pass-doc OptimizerCodeGenPasses ./)

20
flang/include/flang/Optimizer/CodeGen/CodeGen.h
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@ -9,19 +9,18 @@
#ifndef OPTIMIZER_CODEGEN_CODEGEN_H
#define OPTIMIZER_CODEGEN_CODEGEN_H
#include "mlir/Pass/Pass.h"
#include "mlir/Pass/PassRegistry.h"
#include <memory>
namespace llvm {
class raw_ostream;
}
namespace mlir {
class Pass;
}
namespace fir {
struct NameUniquer;
/// Prerequiste pass for code gen. Perform intermediate rewrites to perform
/// the code gen (to LLVM-IR dialect) conversion.
std::unique_ptr<mlir::Pass> createFirCodeGenRewritePass();
/// Convert FIR to the LLVM IR dialect
std::unique_ptr<mlir::Pass> createFIRToLLVMPass(NameUniquer &uniquer);
@ -29,6 +28,13 @@ std::unique_ptr<mlir::Pass> createFIRToLLVMPass(NameUniquer &uniquer);
std::unique_ptr<mlir::Pass>
createLLVMDialectToLLVMPass(llvm::raw_ostream &output);
inline void registerOptCodeGenPasses() {
using mlir::Pass;
// declarative passes
#define GEN_PASS_REGISTRATION
#include "flang/Optimizer/CodeGen/CGPasses.h.inc"
}
} // namespace fir
#endif // OPTIMIZER_CODEGEN_CODEGEN_H