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//===- MemRefTransformOps.cpp - Implementation of Memref transform ops ----===//
//
// 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/MemRef/TransformOps/MemRefTransformOps.h"
#include "mlir/Dialect/Affine/IR/AffineOps.h"
#include "mlir/Dialect/Arith/IR/Arith.h"
#include "mlir/Dialect/MemRef/IR/MemRef.h"
#include "mlir/Dialect/MemRef/Transforms/Passes.h"
#include "mlir/Dialect/MemRef/Transforms/Transforms.h"
#include "mlir/Dialect/NVGPU/IR/NVGPUDialect.h"
#include "mlir/Dialect/SCF/IR/SCF.h"
#include "mlir/Dialect/Transform/IR/TransformDialect.h"
#include "mlir/Dialect/Transform/IR/TransformInterfaces.h"
#include "mlir/Dialect/Vector/IR/VectorOps.h"
#include "mlir/Interfaces/LoopLikeInterface.h"
#include "mlir/Transforms/GreedyPatternRewriteDriver.h"
#include "llvm/Support/Debug.h"
using namespace mlir;
#define DEBUG_TYPE "memref-transforms"
#define DBGS() (llvm::dbgs() << '[' << DEBUG_TYPE << "] ")
//===----------------------------------------------------------------------===//
// Apply...PatternsOp
//===----------------------------------------------------------------------===//
void transform::ApplyExpandOpsPatternsOp::populatePatterns(
RewritePatternSet &patterns) {
memref::populateExpandOpsPatterns(patterns);
}
void transform::ApplyExpandStridedMetadataPatternsOp::populatePatterns(
RewritePatternSet &patterns) {
memref::populateExpandStridedMetadataPatterns(patterns);
}
void transform::ApplyExtractAddressComputationsPatternsOp::populatePatterns(
RewritePatternSet &patterns) {
memref::populateExtractAddressComputationsPatterns(patterns);
}
void transform::ApplyFoldMemrefAliasOpsPatternsOp::populatePatterns(
RewritePatternSet &patterns) {
memref::populateFoldMemRefAliasOpPatterns(patterns);
}
void transform::ApplyResolveRankedShapedTypeResultDimsPatternsOp::
populatePatterns(RewritePatternSet &patterns) {
memref::populateResolveRankedShapedTypeResultDimsPatterns(patterns);
}
//===----------------------------------------------------------------------===//
// MemRefMultiBufferOp
//===----------------------------------------------------------------------===//
DiagnosedSilenceableFailure transform::MemRefMultiBufferOp::apply(
transform::TransformRewriter &rewriter,
transform::TransformResults &transformResults,
transform::TransformState &state) {
SmallVector<Operation *> results;
for (Operation *op : state.getPayloadOps(getTarget())) {
bool canApplyMultiBuffer = true;
auto target = cast<memref::AllocOp>(op);
LLVM_DEBUG(DBGS() << "Start multibuffer transform op: " << target << "\n";);
// Skip allocations not used in a loop.
for (Operation *user : target->getUsers()) {
if (isa<memref::DeallocOp>(user))
continue;
auto loop = user->getParentOfType<LoopLikeOpInterface>();
if (!loop) {
LLVM_DEBUG(DBGS() << "--allocation not used in a loop\n";
DBGS() << "----due to user: " << *user;);
canApplyMultiBuffer = false;
break;
}
}
if (!canApplyMultiBuffer) {
LLVM_DEBUG(DBGS() << "--cannot apply multibuffering -> Skip\n";);
continue;
}
auto newBuffer =
memref::multiBuffer(rewriter, target, getFactor(), getSkipAnalysis());
if (failed(newBuffer)) {
LLVM_DEBUG(DBGS() << "--op failed to multibuffer\n";);
return emitSilenceableFailure(target->getLoc())
<< "op failed to multibuffer";
}
results.push_back(*newBuffer);
}
transformResults.set(cast<OpResult>(getResult()), results);
return DiagnosedSilenceableFailure::success();
}
//===----------------------------------------------------------------------===//
// MemRefMakeLoopIndependentOp
//===----------------------------------------------------------------------===//
DiagnosedSilenceableFailure transform::MemRefMakeLoopIndependentOp::applyToOne(
transform::TransformRewriter &rewriter, Operation *target,
transform::ApplyToEachResultList &results,
transform::TransformState &state) {
// Gather IVs.
SmallVector<Value> ivs;
Operation *nextOp = target;
for (uint64_t i = 0, e = getNumLoops(); i < e; ++i) {
nextOp = nextOp->getParentOfType<scf::ForOp>();
if (!nextOp) {
DiagnosedSilenceableFailure diag = emitSilenceableError()
<< "could not find " << i
<< "-th enclosing loop";
diag.attachNote(target->getLoc()) << "target op";
return diag;
}
ivs.push_back(cast<scf::ForOp>(nextOp).getInductionVar());
}
// Rewrite IR.
FailureOr<Value> replacement = failure();
if (auto allocaOp = dyn_cast<memref::AllocaOp>(target)) {
replacement = memref::replaceWithIndependentOp(rewriter, allocaOp, ivs);
} else {
DiagnosedSilenceableFailure diag = emitSilenceableError()
<< "unsupported target op";
diag.attachNote(target->getLoc()) << "target op";
return diag;
}
if (failed(replacement)) {
DiagnosedSilenceableFailure diag =
emitSilenceableError() << "could not make target op loop-independent";
diag.attachNote(target->getLoc()) << "target op";
return diag;
}
results.push_back(replacement->getDefiningOp());
return DiagnosedSilenceableFailure::success();
}
//===----------------------------------------------------------------------===//
// Transform op registration
//===----------------------------------------------------------------------===//
namespace {
class MemRefTransformDialectExtension
: public transform::TransformDialectExtension<
MemRefTransformDialectExtension> {
public:
using Base::Base;
void init() {
declareGeneratedDialect<affine::AffineDialect>();
declareGeneratedDialect<arith::ArithDialect>();
declareGeneratedDialect<memref::MemRefDialect>();
declareGeneratedDialect<nvgpu::NVGPUDialect>();
declareGeneratedDialect<vector::VectorDialect>();
registerTransformOps<
#define GET_OP_LIST
#include "mlir/Dialect/MemRef/TransformOps/MemRefTransformOps.cpp.inc"
>();
}
};
} // namespace
#define GET_OP_CLASSES
#include "mlir/Dialect/MemRef/TransformOps/MemRefTransformOps.cpp.inc"
void mlir::memref::registerTransformDialectExtension(
DialectRegistry ®istry) {
registry.addExtensions<MemRefTransformDialectExtension>();
}
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