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//===-- XeVMAttachTarget.cpp - Attach an XeVM target ----------------------===//
//
// This file is licensed 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 the `GpuXeVMAttachTarget` pass, attaching `#xevm.target`
// attributes to GPU modules.
//
//===----------------------------------------------------------------------===//
#include "mlir/Dialect/GPU/Transforms/Passes.h"
#include "mlir/Dialect/GPU/IR/GPUDialect.h"
#include "mlir/Dialect/LLVMIR/XeVMDialect.h"
#include "mlir/IR/Builders.h"
#include "mlir/Pass/Pass.h"
#include "mlir/Target/LLVM/XeVM/Target.h"
#include "llvm/Support/Regex.h"
namespace mlir {
#define GEN_PASS_DEF_GPUXEVMATTACHTARGET
#include "mlir/Dialect/GPU/Transforms/Passes.h.inc"
} // namespace mlir
using namespace mlir;
using namespace mlir::xevm;
namespace {
struct XeVMAttachTarget
: public mlir::impl::GpuXeVMAttachTargetBase<XeVMAttachTarget> {
using Base::Base;
DictionaryAttr getFlags(OpBuilder &builder) const;
void runOnOperation() override;
void getDependentDialects(DialectRegistry ®istry) const override {
registry.insert<xevm::XeVMDialect>();
}
};
} // namespace
DictionaryAttr XeVMAttachTarget::getFlags(OpBuilder &builder) const {
SmallVector<NamedAttribute, 3> flags;
// Tokenize and set the optional command line options.
if (!cmdOptions.empty()) {
std::pair<llvm::BumpPtrAllocator, SmallVector<const char *>> options =
gpu::TargetOptions::tokenizeCmdOptions(cmdOptions);
if (!options.second.empty()) {
llvm::SmallVector<mlir::Attribute> xevmOptionAttrs;
for (const char *opt : options.second) {
xevmOptionAttrs.emplace_back(
mlir::StringAttr::get(builder.getContext(), StringRef(opt)));
}
flags.push_back(builder.getNamedAttr(
"cmd-options",
mlir::ArrayAttr::get(builder.getContext(), xevmOptionAttrs)));
}
}
if (!flags.empty())
return builder.getDictionaryAttr(flags);
return nullptr;
}
void XeVMAttachTarget::runOnOperation() {
OpBuilder builder(&getContext());
ArrayRef<std::string> libs(linkLibs);
SmallVector<StringRef> filesToLink(libs);
auto target = builder.getAttr<xevm::XeVMTargetAttr>(
optLevel, triple, chip, getFlags(builder),
filesToLink.empty() ? nullptr : builder.getStrArrayAttr(filesToLink));
llvm::Regex matcher(moduleMatcher);
for (Region ®ion : getOperation()->getRegions())
for (Block &block : region.getBlocks())
for (auto module : block.getOps<gpu::GPUModuleOp>()) {
// Check if the name of the module matches.
if (!moduleMatcher.empty() && !matcher.match(module.getName()))
continue;
// Create the target array.
SmallVector<Attribute> targets;
if (std::optional<ArrayAttr> attrs = module.getTargets())
targets.append(attrs->getValue().begin(), attrs->getValue().end());
targets.push_back(target);
// Remove any duplicate targets.
targets.erase(llvm::unique(targets), targets.end());
// Update the target attribute array.
module.setTargetsAttr(builder.getArrayAttr(targets));
}
}
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