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https://github.com/KhronosGroup/SPIRV-Tools
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fcb22ecf0f
Adds a virtual method, GetFreshIds(), to Transformation. Every transformation uses this to indicate which ids in its protobuf message are fresh ids. This means that when replaying a sequence of transformations the replayer can obtain a smallest id that is not in use by the module already and that will not be used by any transformation by necessity. Ids greater than or equal to this id can be used as overflow ids. Fixes #3851.
66 lines
2.4 KiB
C++
66 lines
2.4 KiB
C++
// Copyright (c) 2019 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 "source/fuzz/transformation_set_selection_control.h"
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namespace spvtools {
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namespace fuzz {
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TransformationSetSelectionControl::TransformationSetSelectionControl(
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const spvtools::fuzz::protobufs::TransformationSetSelectionControl& message)
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: message_(message) {}
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TransformationSetSelectionControl::TransformationSetSelectionControl(
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uint32_t block_id, uint32_t selection_control) {
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message_.set_block_id(block_id);
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message_.set_selection_control(selection_control);
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}
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bool TransformationSetSelectionControl::IsApplicable(
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opt::IRContext* ir_context, const TransformationContext& /*unused*/) const {
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assert((message_.selection_control() == SpvSelectionControlMaskNone ||
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message_.selection_control() == SpvSelectionControlFlattenMask ||
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message_.selection_control() == SpvSelectionControlDontFlattenMask) &&
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"Selection control should never be set to something other than "
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"'None', 'Flatten' or 'DontFlatten'");
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if (auto block = ir_context->get_instr_block(message_.block_id())) {
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if (auto merge_inst = block->GetMergeInst()) {
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return merge_inst->opcode() == SpvOpSelectionMerge;
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}
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}
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// Either the block did not exit, or did not end with OpSelectionMerge.
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return false;
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}
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void TransformationSetSelectionControl::Apply(
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opt::IRContext* ir_context, TransformationContext* /*unused*/) const {
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ir_context->get_instr_block(message_.block_id())
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->GetMergeInst()
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->SetInOperand(1, {message_.selection_control()});
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}
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protobufs::Transformation TransformationSetSelectionControl::ToMessage() const {
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protobufs::Transformation result;
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*result.mutable_set_selection_control() = message_;
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return result;
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}
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std::unordered_set<uint32_t> TransformationSetSelectionControl::GetFreshIds()
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const {
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return std::unordered_set<uint32_t>();
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}
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} // namespace fuzz
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} // namespace spvtools
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