mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-10-18 19:20:05 +00:00
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.
75 lines
3.2 KiB
C++
75 lines
3.2 KiB
C++
// Copyright (c) 2020 Google LLC
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#ifndef SOURCE_FUZZ_TRANSFORMATION_ADD_OPPHI_SYNONYM_H_
|
|
#define SOURCE_FUZZ_TRANSFORMATION_ADD_OPPHI_SYNONYM_H_
|
|
|
|
#include "source/fuzz/transformation.h"
|
|
|
|
namespace spvtools {
|
|
namespace fuzz {
|
|
class TransformationAddOpPhiSynonym : public Transformation {
|
|
public:
|
|
explicit TransformationAddOpPhiSynonym(
|
|
const protobufs::TransformationAddOpPhiSynonym& message);
|
|
|
|
TransformationAddOpPhiSynonym(
|
|
uint32_t block_id, const std::map<uint32_t, uint32_t>& preds_to_ids,
|
|
uint32_t fresh_id);
|
|
|
|
// - |message_.block_id| is the label of a block with at least one
|
|
// predecessor.
|
|
// - |message_.pred_to_id| contains a mapping from each of the predecessors of
|
|
// the block to an id that is available at the end of the predecessor.
|
|
// - All the ids corresponding to a predecessor in |message_.pred_to_id|:
|
|
// - have been recorded as synonymous and all have the same type.
|
|
// TODO(https://github.com/KhronosGroup/SPIRV-Tools/issues/3726): if a
|
|
// predecessor is a dead block, any id of the right type could be used,
|
|
// even if it is not synonym with the others.
|
|
// - have one of the following types: Bool, Integer, Float, Vector, Matrix,
|
|
// Array, Struct. Pointer types are also allowed if the VariablePointers
|
|
// capability is enabled and the storage class is Workgroup or
|
|
// StorageBuffer.
|
|
// - |message_.fresh_id| is a fresh id.
|
|
bool IsApplicable(
|
|
opt::IRContext* ir_context,
|
|
const TransformationContext& transformation_context) const override;
|
|
|
|
// Given a block with n predecessors, with n >= 1, and n corresponding
|
|
// synonymous ids of the same type, each available to use at the end of the
|
|
// corresponding predecessor, adds an OpPhi instruction at the beginning of
|
|
// the block of the form:
|
|
// %fresh_id = OpPhi %type %id_1 %pred_1 %id_2 %pred_2 ... %id_n %pred_n
|
|
// This instruction is then marked as synonymous with the ids.
|
|
void Apply(opt::IRContext* ir_context,
|
|
TransformationContext* transformation_context) const override;
|
|
|
|
// Returns true if |type_id| is the id of a type in the module, which is one
|
|
// of the following: Bool, Integer, Float, Vector, Matrix, Array, Struct.
|
|
// Pointer types are also allowed if the VariablePointers capability is
|
|
// enabled and the storage class is Workgroup or StorageBuffer.
|
|
static bool CheckTypeIsAllowed(opt::IRContext* ir_context, uint32_t type_id);
|
|
|
|
std::unordered_set<uint32_t> GetFreshIds() const override;
|
|
|
|
protobufs::Transformation ToMessage() const override;
|
|
|
|
private:
|
|
protobufs::TransformationAddOpPhiSynonym message_;
|
|
};
|
|
} // namespace fuzz
|
|
} // namespace spvtools
|
|
|
|
#endif // SOURCE_FUZZ_TRANSFORMATION_ADD_OPPHI_SYNONYM_H_
|