2019-04-16 18:31:36 +00:00
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// Copyright (c) 2019 Google LLC.
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2019-04-12 16:14:23 +00:00
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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 "source/opt/legalize_vector_shuffle_pass.h"
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#include "source/opt/ir_context.h"
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namespace spvtools {
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namespace opt {
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Pass::Status LegalizeVectorShufflePass::Process() {
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bool changed = false;
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context()->module()->ForEachInst([&changed](Instruction* inst) {
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if (inst->opcode() != SpvOpVectorShuffle) return;
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for (uint32_t idx = 2; idx < inst->NumInOperands(); ++idx) {
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auto literal = inst->GetSingleWordInOperand(idx);
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if (literal != 0xFFFFFFFF) continue;
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changed = true;
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inst->SetInOperand(idx, {0});
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}
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});
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return changed ? Status::SuccessWithChange : Status::SuccessWithoutChange;
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}
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} // namespace opt
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} // namespace spvtools
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