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https://github.com/KhronosGroup/SPIRV-Tools
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9beb54513c
* Reimplement LCS used by spirv-diff
Two improvements are made to the LCS algorithm:
- The LCS algorithm is reimplemented to use a std::stack instead of
being recursive. This prevents stack overflow in the LCSTest.Large
test.
- The LCS algorithm uses an NxM table. Previously, entries of this
table were {size_t, bool, bool}, which is now packed in 32 bits. The
first entry can assume a maximum value of min(N, M), which
realistically for SPIR-V diff will not be larger than 1 billion
instructions. This reduces memory usage of LCS by 75%.
This partially reverts 845f3efb8a and
enables LCS tests.
* Stabilize the output of spirv-diff
std::map is used instead of std::unordered_map to ensure the output of
spirv-diff is identical everywhere.
This partially reverts 845f3efb8a and
enables spirv-diff tests.
27 lines
910 B
CMake
27 lines
910 B
CMake
# Copyright (c) 2022 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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include(diff_files/diff_test_files_autogen.cmake)
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add_spvtools_unittest(TARGET lcs
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SRCS lcs_test.cpp
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LIBS SPIRV-Tools-diff
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)
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add_spvtools_unittest(TARGET diff
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SRCS diff_test.cpp diff_test_utils.h diff_test_utils.cpp
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${DIFF_TEST_FILES} ${spirv-tools_SOURCE_DIR}/tools/util/cli_consumer.cpp
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LIBS SPIRV-Tools-diff
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)
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