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https://github.com/KhronosGroup/SPIRV-Tools
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dd8400e150
This patch adds initial support for loop unrolling in the form of a series of utility classes which perform the unrolling. The pass can be run with the command spirv-opt --loop-unroll. This will unroll loops within the module which have the unroll hint set. The unroller imposes a number of requirements on the loops it can unroll. These are documented in the comments for the LoopUtils::CanPerformUnroll method in loop_utils.h. Some of the restrictions will be lifted in future patches.
38 lines
1.0 KiB
C++
38 lines
1.0 KiB
C++
// Copyright (c) 2018 Google LLC.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef SOURCE_OPT_LOOP_UNROLLER_H_
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#define SOURCE_OPT_LOOP_UNROLLER_H_
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#include "opt/pass.h"
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namespace spvtools {
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namespace opt {
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class LoopUnroller : public Pass {
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public:
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LoopUnroller() : Pass() {}
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const char* name() const override { return "Loop unroller"; }
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Status Process(ir::IRContext* context) override;
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private:
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ir::IRContext* context_;
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};
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} // namespace opt
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} // namespace spvtools
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#endif // SOURCE_OPT_LOOP_UNROLLER_H_
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