mirror of
https://github.com/intel/llvm.git
synced 2026-01-29 04:16:38 +08:00
80aca1eaf7
This revision removes all of the CRTP from the pass hierarchy in preparation for using the tablegen backend instead. This creates a much cleaner interface in the C++ code, and naturally fits with the rest of the infrastructure. A new utility class, PassWrapper, is added to replicate the existing behavior for passes not suitable for using the tablegen backend. Differential Revision: https://reviews.llvm.org/D77350
54 lines
1.8 KiB
C++
54 lines
1.8 KiB
C++
//===- ParallelLoopCollapsing.cpp - Pass collapsing parallel loop indices -===//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "mlir/Dialect/LoopOps/LoopOps.h"
|
|
#include "mlir/Dialect/StandardOps/IR/Ops.h"
|
|
#include "mlir/Pass/Pass.h"
|
|
#include "mlir/Transforms/LoopUtils.h"
|
|
#include "mlir/Transforms/Passes.h"
|
|
#include "mlir/Transforms/RegionUtils.h"
|
|
#include "llvm/Support/CommandLine.h"
|
|
#include "llvm/Support/Debug.h"
|
|
|
|
#define DEBUG_TYPE "parallel-loop-collapsing"
|
|
|
|
using namespace mlir;
|
|
|
|
namespace {
|
|
struct ParallelLoopCollapsing
|
|
: public PassWrapper<ParallelLoopCollapsing, OperationPass<>> {
|
|
/// Include the generated pass utilities.
|
|
#define GEN_PASS_ParallelLoopCollapsing
|
|
#include "mlir/Transforms/Passes.h.inc"
|
|
|
|
ParallelLoopCollapsing() = default;
|
|
ParallelLoopCollapsing(const ParallelLoopCollapsing &) {}
|
|
void runOnOperation() override {
|
|
Operation *module = getOperation();
|
|
|
|
module->walk([&](loop::ParallelOp op) {
|
|
// The common case for GPU dialect will be simplifying the ParallelOp to 3
|
|
// arguments, so we do that here to simplify things.
|
|
llvm::SmallVector<std::vector<unsigned>, 3> combinedLoops;
|
|
if (clCollapsedIndices0.size())
|
|
combinedLoops.push_back(clCollapsedIndices0);
|
|
if (clCollapsedIndices1.size())
|
|
combinedLoops.push_back(clCollapsedIndices1);
|
|
if (clCollapsedIndices2.size())
|
|
combinedLoops.push_back(clCollapsedIndices2);
|
|
collapseParallelLoops(op, combinedLoops);
|
|
});
|
|
}
|
|
};
|
|
|
|
} // namespace
|
|
|
|
std::unique_ptr<Pass> mlir::createParallelLoopCollapsingPass() {
|
|
return std::make_unique<ParallelLoopCollapsing>();
|
|
}
|