e2296d8295
Example:
```mlir
%mask = vector.create_mask %a, %b : vector<[4]x[8]xi1>
%slice = vector.extract %mask[%index]
: vector<[8]xi1> from vector<[4]x[8]xi1>
```
Becomes:
```mlir
%mask_rows = vector.create_mask %a : vector<[4]xi1>
%mask_cols = vector.create_mask %b : vector<[8]xi1>
%slice = arm_sve.psel %mask_cols, %mask_rows[%index]
: vector<[8]xi1>, vector<[4]xi1>
```
Note: While psel is under ArmSVE it requires SME (or SVE 2.1), so this
is currently the most logical place for this lowering.
42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
//===- VectorToArmSMEPass.cpp - Conversion from Vector to the ArmSME dialect =//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "mlir/Conversion/VectorToArmSME/VectorToArmSME.h"
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#include "mlir/Dialect/ArmSME/IR/ArmSME.h"
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#include "mlir/Dialect/ArmSVE/IR/ArmSVEDialect.h"
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#include "mlir/Pass/Pass.h"
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#include "mlir/Transforms/GreedyPatternRewriteDriver.h"
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namespace mlir {
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#define GEN_PASS_DEF_CONVERTVECTORTOARMSME
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#include "mlir/Conversion/Passes.h.inc"
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} // namespace mlir
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using namespace mlir;
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using namespace mlir::vector;
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namespace {
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struct ConvertVectorToArmSMEPass
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: public impl::ConvertVectorToArmSMEBase<ConvertVectorToArmSMEPass> {
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void runOnOperation() override;
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};
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} // namespace
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void ConvertVectorToArmSMEPass::runOnOperation() {
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RewritePatternSet patterns(&getContext());
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populateVectorToArmSMEPatterns(patterns, getContext());
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(void)applyPatternsAndFoldGreedily(getOperation(), std::move(patterns));
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}
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std::unique_ptr<Pass> mlir::createConvertVectorToArmSMEPass() {
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return std::make_unique<ConvertVectorToArmSMEPass>();
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}
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