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https://github.com/KhronosGroup/SPIRV-Tools
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e4c7d8e748
Create a new optimization pass, strength reduction, which will replace integer multiplication by a constant power of 2 with an equivalent bit shift. More changes could be added later. - Does not duplicate constants - Adds vector |Concat| utility function to a common test header.
65 lines
2.6 KiB
C++
65 lines
2.6 KiB
C++
// Copyright (c) 2016 Google Inc.
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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 LIBSPIRV_TEST_OPT_PASS_UTILS_H_
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#define LIBSPIRV_TEST_OPT_PASS_UTILS_H_
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#include <functional>
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#include <string>
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#include <vector>
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namespace spvtools {
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// In-place substring replacement. Finds the |find_str| in the |process_str|
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// and replaces the found substring with |replace_str|. Returns true if at
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// least one replacement is done successfully, returns false otherwise. The
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// replaced substring won't be processed again, which means: If the
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// |replace_str| has |find_str| as its substring, that newly replaced part of
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// |process_str| won't be processed again.
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bool FindAndReplace(std::string* process_str, const std::string find_str,
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const std::string replace_str);
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// Returns true if the given string contains any debug opcode substring.
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bool ContainsDebugOpcode(const char* inst);
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// Returns the concatenated string from a vector of |strings|, with postfixing
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// each string with the given |delimiter|. if the |skip_dictator| returns true
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// for an original string, that string will be omitted.
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std::string SelectiveJoin(const std::vector<const char*>& strings,
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const std::function<bool(const char*)>& skip_dictator,
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char delimiter = '\n');
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// Concatenates a vector of strings into one string. Each string is postfixed
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// with '\n'.
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std::string JoinAllInsts(const std::vector<const char*>& insts);
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// Concatenates a vector of strings into one string. Each string is postfixed
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// with '\n'. If a string contains opcode for debug instruction, that string
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// will be ignored.
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std::string JoinNonDebugInsts(const std::vector<const char*>& insts);
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// Returns a vector that contains the contents of |a| followed by the contents
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// of |b|.
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template <typename T>
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std::vector<T> Concat(const std::vector<T>& a, const std::vector<T>& b) {
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std::vector<T> ret;
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std::copy(a.begin(), a.end(), back_inserter(ret));
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std::copy(b.begin(), b.end(), back_inserter(ret));
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return ret;
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}
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} // namespace spvtools
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#endif // LIBSPIRV_TEST_OPT_PASS_UTILS_H_
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