67d0d7ac0a
The patch introduces the required changes to update the pass declarations and definitions to use the new autogenerated files and allow dropping the old infrastructure. Reviewed By: mehdi_amini, rriddle Differential Review: https://reviews.llvm.org/D132838
103 lines
3.8 KiB
C++
103 lines
3.8 KiB
C++
//===- GPUToSPIRVPass.cpp - GPU to SPIR-V Passes --------------------------===//
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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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//
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// This file implements a pass to convert a kernel function in the GPU Dialect
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// into a spv.module operation.
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//
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//===----------------------------------------------------------------------===//
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#include "mlir/Conversion/GPUToSPIRV/GPUToSPIRVPass.h"
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#include "mlir/Conversion/ArithmeticToSPIRV/ArithmeticToSPIRV.h"
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#include "mlir/Conversion/FuncToSPIRV/FuncToSPIRV.h"
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#include "mlir/Conversion/GPUToSPIRV/GPUToSPIRV.h"
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#include "mlir/Conversion/MemRefToSPIRV/MemRefToSPIRV.h"
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#include "mlir/Dialect/GPU/IR/GPUDialect.h"
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#include "mlir/Dialect/SPIRV/IR/SPIRVDialect.h"
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#include "mlir/Dialect/SPIRV/IR/SPIRVOps.h"
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#include "mlir/Dialect/SPIRV/Transforms/SPIRVConversion.h"
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namespace mlir {
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#define GEN_PASS_DEF_CONVERTGPUTOSPIRV
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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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namespace {
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/// Pass to lower GPU Dialect to SPIR-V. The pass only converts the gpu.func ops
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/// inside gpu.module ops. i.e., the function that are referenced in
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/// gpu.launch_func ops. For each such function
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///
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/// 1) Create a spirv::ModuleOp, and clone the function into spirv::ModuleOp
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/// (the original function is still needed by the gpu::LaunchKernelOp, so cannot
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/// replace it).
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///
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/// 2) Lower the body of the spirv::ModuleOp.
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class GPUToSPIRVPass : public impl::ConvertGPUToSPIRVBase<GPUToSPIRVPass> {
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public:
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explicit GPUToSPIRVPass(bool mapMemorySpace)
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: mapMemorySpace(mapMemorySpace) {}
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void runOnOperation() override;
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private:
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bool mapMemorySpace;
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};
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} // namespace
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void GPUToSPIRVPass::runOnOperation() {
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MLIRContext *context = &getContext();
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ModuleOp module = getOperation();
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SmallVector<Operation *, 1> gpuModules;
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OpBuilder builder(context);
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module.walk([&](gpu::GPUModuleOp moduleOp) {
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// Clone each GPU kernel module for conversion, given that the GPU
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// launch op still needs the original GPU kernel module.
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builder.setInsertionPoint(moduleOp.getOperation());
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gpuModules.push_back(builder.clone(*moduleOp.getOperation()));
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});
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// Map MemRef memory space to SPIR-V storage class first if requested.
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if (mapMemorySpace) {
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std::unique_ptr<ConversionTarget> target =
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spirv::getMemorySpaceToStorageClassTarget(*context);
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spirv::MemorySpaceToStorageClassMap memorySpaceMap =
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spirv::mapMemorySpaceToVulkanStorageClass;
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spirv::MemorySpaceToStorageClassConverter converter(memorySpaceMap);
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RewritePatternSet patterns(context);
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spirv::populateMemorySpaceToStorageClassPatterns(converter, patterns);
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if (failed(applyFullConversion(gpuModules, *target, std::move(patterns))))
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return signalPassFailure();
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}
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auto targetAttr = spirv::lookupTargetEnvOrDefault(module);
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std::unique_ptr<ConversionTarget> target =
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SPIRVConversionTarget::get(targetAttr);
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SPIRVTypeConverter typeConverter(targetAttr);
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RewritePatternSet patterns(context);
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populateGPUToSPIRVPatterns(typeConverter, patterns);
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// TODO: Change SPIR-V conversion to be progressive and remove the following
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// patterns.
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mlir::arith::populateArithmeticToSPIRVPatterns(typeConverter, patterns);
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populateMemRefToSPIRVPatterns(typeConverter, patterns);
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populateFuncToSPIRVPatterns(typeConverter, patterns);
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if (failed(applyFullConversion(gpuModules, *target, std::move(patterns))))
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return signalPassFailure();
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}
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std::unique_ptr<OperationPass<ModuleOp>>
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mlir::createConvertGPUToSPIRVPass(bool mapMemorySpace) {
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return std::make_unique<GPUToSPIRVPass>(mapMemorySpace);
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}
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