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//===- TestAvailability.cpp - Test pass for setting Entry point ABI info --===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file implements a pass that sets the spirv.entry_point_abi attribute on
// functions that are to be lowered as entry point functions.
//
//===----------------------------------------------------------------------===//
#include "mlir/Dialect/GPU/IR/GPUDialect.h"
#include "mlir/Dialect/SPIRV/IR/SPIRVDialect.h"
#include "mlir/Dialect/SPIRV/IR/TargetAndABI.h"
#include "mlir/Pass/Pass.h"
using namespace mlir;
namespace {
/// Pass to set the spirv.entry_point_abi
struct TestSpirvEntryPointABIPass
: public PassWrapper<TestSpirvEntryPointABIPass,
OperationPass<gpu::GPUModuleOp>> {
MLIR_DEFINE_EXPLICIT_INTERNAL_INLINE_TYPE_ID(TestSpirvEntryPointABIPass)
StringRef getArgument() const final { return "test-spirv-entry-point-abi"; }
StringRef getDescription() const final {
return "Set the spirv.entry_point_abi attribute on GPU kernel function "
"within the "
"module, intended for testing only";
}
void getDependentDialects(DialectRegistry ®istry) const override {
registry.insert<spirv::SPIRVDialect>();
}
TestSpirvEntryPointABIPass() = default;
TestSpirvEntryPointABIPass(const TestSpirvEntryPointABIPass &) {}
void runOnOperation() override;
private:
Pass::ListOption<int32_t> workgroupSize{
*this, "workgroup-size",
llvm::cl::desc(
"Workgroup size to use for all gpu.func kernels in the module, "
"specified with x-dimension first, y-dimension next and z-dimension "
"last. Unspecified dimensions will be set to 1")};
Pass::Option<int> subgroupSize{
*this, "subgroup-size",
llvm::cl::desc(
"Subgroup size to use for all gpu.func kernels in the module"),
llvm::cl::init(0)};
Pass::Option<int> targetWidth{
*this, "target-width",
llvm::cl::desc(
"Specify the component width of floating-point instructions"),
llvm::cl::init(0)};
};
} // namespace
void TestSpirvEntryPointABIPass::runOnOperation() {
gpu::GPUModuleOp gpuModule = getOperation();
MLIRContext *context = &getContext();
StringRef attrName = spirv::getEntryPointABIAttrName();
for (gpu::GPUFuncOp gpuFunc : gpuModule.getOps<gpu::GPUFuncOp>()) {
if (!gpu::GPUDialect::isKernel(gpuFunc) ||
gpuFunc->getDiscardableAttr(attrName))
continue;
SmallVector<int32_t, 3> workgroupSizeVec(workgroupSize.begin(),
workgroupSize.end());
workgroupSizeVec.resize(3, 1);
gpuFunc->setAttr(attrName,
spirv::getEntryPointABIAttr(
context, workgroupSizeVec,
(subgroupSize == 0) ? std::nullopt
: std::optional<int>(subgroupSize),
(targetWidth == 0) ? std::nullopt
: std::optional<int>(targetWidth)));
}
}
namespace mlir {
void registerTestSpirvEntryPointABIPass() {
PassRegistration<TestSpirvEntryPointABIPass>();
}
} // namespace mlir
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