19db802e7b
There is no need for the interface implementations to be exposed, opaque registration functions are sufficient for all users, similarly to passes. Reviewed By: mehdi_amini Differential Revision: https://reviews.llvm.org/D97852
96 lines
3.8 KiB
C++
96 lines
3.8 KiB
C++
//===- ROCDLToLLVMIRTranslation.cpp - Translate ROCDL to LLVM IR ----------===//
|
|
//
|
|
// 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 implements a translation between the MLIR ROCDL dialect and
|
|
// LLVM IR.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "mlir/Target/LLVMIR/Dialect/ROCDL/ROCDLToLLVMIRTranslation.h"
|
|
#include "mlir/Dialect/LLVMIR/ROCDLDialect.h"
|
|
#include "mlir/IR/Operation.h"
|
|
#include "mlir/Target/LLVMIR/ModuleTranslation.h"
|
|
|
|
#include "llvm/IR/IRBuilder.h"
|
|
#include "llvm/IR/IntrinsicsAMDGPU.h"
|
|
|
|
using namespace mlir;
|
|
using namespace mlir::LLVM;
|
|
using mlir::LLVM::detail::createIntrinsicCall;
|
|
|
|
// Create a call to ROCm-Device-Library function
|
|
// Currently this routine will work only for calling ROCDL functions that
|
|
// take a single int32 argument. It is likely that the interface of this
|
|
// function will change to make it more generic.
|
|
static llvm::Value *createDeviceFunctionCall(llvm::IRBuilderBase &builder,
|
|
StringRef fn_name, int parameter) {
|
|
llvm::Module *module = builder.GetInsertBlock()->getModule();
|
|
llvm::FunctionType *function_type = llvm::FunctionType::get(
|
|
llvm::Type::getInt64Ty(module->getContext()), // return type.
|
|
llvm::Type::getInt32Ty(module->getContext()), // parameter type.
|
|
false); // no variadic arguments.
|
|
llvm::Function *fn = dyn_cast<llvm::Function>(
|
|
module->getOrInsertFunction(fn_name, function_type).getCallee());
|
|
llvm::Value *fn_op0 = llvm::ConstantInt::get(
|
|
llvm::Type::getInt32Ty(module->getContext()), parameter);
|
|
return builder.CreateCall(fn, ArrayRef<llvm::Value *>(fn_op0));
|
|
}
|
|
|
|
namespace {
|
|
/// Implementation of the dialect interface that converts operations belonging
|
|
/// to the ROCDL dialect to LLVM IR.
|
|
class ROCDLDialectLLVMIRTranslationInterface
|
|
: public LLVMTranslationDialectInterface {
|
|
public:
|
|
using LLVMTranslationDialectInterface::LLVMTranslationDialectInterface;
|
|
|
|
/// Translates the given operation to LLVM IR using the provided IR builder
|
|
/// and saving the state in `moduleTranslation`.
|
|
LogicalResult
|
|
convertOperation(Operation *op, llvm::IRBuilderBase &builder,
|
|
LLVM::ModuleTranslation &moduleTranslation) const final {
|
|
Operation &opInst = *op;
|
|
#include "mlir/Dialect/LLVMIR/ROCDLConversions.inc"
|
|
|
|
return failure();
|
|
}
|
|
|
|
/// Attaches module-level metadata for functions marked as kernels.
|
|
LogicalResult
|
|
amendOperation(Operation *op, NamedAttribute attribute,
|
|
LLVM::ModuleTranslation &moduleTranslation) const final {
|
|
if (attribute.first == ROCDL::ROCDLDialect::getKernelFuncAttrName()) {
|
|
auto func = dyn_cast<LLVM::LLVMFuncOp>(op);
|
|
if (!func)
|
|
return failure();
|
|
|
|
// For GPU kernels,
|
|
// 1. Insert AMDGPU_KERNEL calling convention.
|
|
// 2. Insert amdgpu-flat-workgroup-size(1, 1024) attribute.
|
|
llvm::Function *llvmFunc =
|
|
moduleTranslation.lookupFunction(func.getName());
|
|
llvmFunc->setCallingConv(llvm::CallingConv::AMDGPU_KERNEL);
|
|
llvmFunc->addFnAttr("amdgpu-flat-work-group-size", "1, 1024");
|
|
}
|
|
return success();
|
|
}
|
|
};
|
|
} // end namespace
|
|
|
|
void mlir::registerROCDLDialectTranslation(DialectRegistry ®istry) {
|
|
registry.insert<ROCDL::ROCDLDialect>();
|
|
registry.addDialectInterface<ROCDL::ROCDLDialect,
|
|
ROCDLDialectLLVMIRTranslationInterface>();
|
|
}
|
|
|
|
void mlir::registerROCDLDialectTranslation(MLIRContext &context) {
|
|
DialectRegistry registry;
|
|
registerROCDLDialectTranslation(registry);
|
|
context.appendDialectRegistry(registry);
|
|
}
|