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.
77 lines
3.0 KiB
C++
77 lines
3.0 KiB
C++
// Copyright (c) 2020 Vasyl Teliman
|
|
//
|
|
// 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_COPY_MEMORY_H_
|
|
#define SOURCE_FUZZ_TRANSFORMATION_ADD_COPY_MEMORY_H_
|
|
|
|
#include "source/fuzz/protobufs/spirvfuzz_protobufs.h"
|
|
#include "source/fuzz/transformation.h"
|
|
#include "source/fuzz/transformation_context.h"
|
|
#include "source/opt/ir_context.h"
|
|
|
|
namespace spvtools {
|
|
namespace fuzz {
|
|
|
|
class TransformationAddCopyMemory : public Transformation {
|
|
public:
|
|
explicit TransformationAddCopyMemory(
|
|
const protobufs::TransformationAddCopyMemory& message);
|
|
|
|
TransformationAddCopyMemory(
|
|
const protobufs::InstructionDescriptor& instruction_descriptor,
|
|
uint32_t fresh_id, uint32_t source_id, SpvStorageClass storage_class,
|
|
uint32_t initializer_id);
|
|
|
|
// - |instruction_descriptor| must point to a valid instruction in the module.
|
|
// - it should be possible to insert OpCopyMemory before
|
|
// |instruction_descriptor| (i.e. the module remains valid after the
|
|
// insertion).
|
|
// - |source_id| must be a result id for some valid instruction in the module.
|
|
// - |fresh_id| must be a fresh id to copy memory into.
|
|
// - type of |source_id| must be OpTypePointer where pointee can be used with
|
|
// OpCopyMemory.
|
|
// - |storage_class| must be either Private or Function.
|
|
// - type ids of instructions with result ids |source_id| and |initialize_id|
|
|
// must be the same.
|
|
bool IsApplicable(
|
|
opt::IRContext* ir_context,
|
|
const TransformationContext& transformation_context) const override;
|
|
|
|
// A global or local variable with id |target_id| and |storage_class| class is
|
|
// created. An 'OpCopyMemory %fresh_id %source_id' instruction is inserted
|
|
// before the |instruction_descriptor|.
|
|
void Apply(opt::IRContext* ir_context,
|
|
TransformationContext* transformation_context) const override;
|
|
|
|
std::unordered_set<uint32_t> GetFreshIds() const override;
|
|
|
|
protobufs::Transformation ToMessage() const override;
|
|
|
|
// Returns true if we can copy memory from |instruction| using OpCopyMemory.
|
|
static bool IsInstructionSupported(opt::IRContext* ir_context,
|
|
opt::Instruction* inst);
|
|
|
|
private:
|
|
// Returns whether the type, pointed to by some OpTypePointer, can be used
|
|
// with OpCopyMemory instruction.
|
|
static bool CanUsePointeeWithCopyMemory(const opt::analysis::Type& type);
|
|
|
|
protobufs::TransformationAddCopyMemory message_;
|
|
};
|
|
|
|
} // namespace fuzz
|
|
} // namespace spvtools
|
|
|
|
#endif // SOURCE_FUZZ_TRANSFORMATION_ADD_COPY_MEMORY_H_
|