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// 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.
#include "source/fuzz/transformation_add_relaxed_decoration.h"
#include "source/fuzz/fuzzer_util.h"
namespace spvtools {
namespace fuzz {
TransformationAddRelaxedDecoration::TransformationAddRelaxedDecoration(
protobufs::TransformationAddRelaxedDecoration message)
: message_(std::move(message)) {}
TransformationAddRelaxedDecoration::TransformationAddRelaxedDecoration(
uint32_t result_id) {
message_.set_result_id(result_id);
}
bool TransformationAddRelaxedDecoration::IsApplicable(
opt::IRContext* ir_context,
const TransformationContext& transformation_context) const {
// |message_.result_id| must be the id of an instruction.
auto instr = ir_context->get_def_use_mgr()->GetDef(message_.result_id());
if (!instr) {
return false;
}
// |instr| must not be decorated with RelaxedPrecision.
if (ir_context->get_decoration_mgr()->HasDecoration(
message_.result_id(), spv::Decoration::RelaxedPrecision)) {
return false;
}
opt::BasicBlock* cur_block = ir_context->get_instr_block(instr);
// The instruction must have a block.
if (cur_block == nullptr) {
return false;
}
// |cur_block| must be a dead block.
if (!(transformation_context.GetFactManager()->BlockIsDead(
cur_block->id()))) {
return false;
}
// The instruction must be numeric.
return IsNumeric(instr->opcode());
}
void TransformationAddRelaxedDecoration::Apply(
opt::IRContext* ir_context, TransformationContext* /*unused*/) const {
// Add a RelaxedPrecision decoration targeting |message_.result_id|.
ir_context->get_decoration_mgr()->AddDecoration(
message_.result_id(), uint32_t(spv::Decoration::RelaxedPrecision));
}
protobufs::Transformation TransformationAddRelaxedDecoration::ToMessage()
const {
protobufs::Transformation result;
*result.mutable_add_relaxed_decoration() = message_;
return result;
}
bool TransformationAddRelaxedDecoration::IsNumeric(spv::Op opcode) {
switch (opcode) {
case spv::Op::OpConvertFToU:
case spv::Op::OpConvertFToS:
case spv::Op::OpConvertSToF:
case spv::Op::OpConvertUToF:
case spv::Op::OpUConvert:
case spv::Op::OpSConvert:
case spv::Op::OpFConvert:
case spv::Op::OpConvertPtrToU:
case spv::Op::OpSatConvertSToU:
case spv::Op::OpSatConvertUToS:
case spv::Op::OpVectorExtractDynamic:
case spv::Op::OpVectorInsertDynamic:
case spv::Op::OpVectorShuffle:
case spv::Op::OpTranspose:
case spv::Op::OpSNegate:
case spv::Op::OpFNegate:
case spv::Op::OpIAdd:
case spv::Op::OpFAdd:
case spv::Op::OpISub:
case spv::Op::OpFSub:
case spv::Op::OpIMul:
case spv::Op::OpFMul:
case spv::Op::OpUDiv:
case spv::Op::OpSDiv:
case spv::Op::OpFDiv:
case spv::Op::OpUMod:
case spv::Op::OpSRem:
case spv::Op::OpSMod:
case spv::Op::OpFRem:
case spv::Op::OpFMod:
case spv::Op::OpVectorTimesScalar:
case spv::Op::OpMatrixTimesScalar:
case spv::Op::OpVectorTimesMatrix:
case spv::Op::OpMatrixTimesVector:
case spv::Op::OpMatrixTimesMatrix:
case spv::Op::OpOuterProduct:
case spv::Op::OpDot:
case spv::Op::OpIAddCarry:
case spv::Op::OpISubBorrow:
case spv::Op::OpUMulExtended:
case spv::Op::OpSMulExtended:
case spv::Op::OpShiftRightLogical:
case spv::Op::OpShiftRightArithmetic:
case spv::Op::OpShiftLeftLogical:
case spv::Op::OpBitwiseOr:
case spv::Op::OpBitwiseXor:
case spv::Op::OpBitwiseAnd:
case spv::Op::OpNot:
case spv::Op::OpBitFieldInsert:
case spv::Op::OpBitFieldSExtract:
case spv::Op::OpBitFieldUExtract:
case spv::Op::OpBitReverse:
case spv::Op::OpBitCount:
case spv::Op::OpAtomicLoad:
case spv::Op::OpAtomicStore:
case spv::Op::OpAtomicExchange:
case spv::Op::OpAtomicCompareExchange:
case spv::Op::OpAtomicCompareExchangeWeak:
case spv::Op::OpAtomicIIncrement:
case spv::Op::OpAtomicIDecrement:
case spv::Op::OpAtomicIAdd:
case spv::Op::OpAtomicISub:
case spv::Op::OpAtomicSMin:
case spv::Op::OpAtomicUMin:
case spv::Op::OpAtomicSMax:
case spv::Op::OpAtomicUMax:
case spv::Op::OpAtomicAnd:
case spv::Op::OpAtomicOr:
case spv::Op::OpAtomicXor:
return true;
default:
return false;
}
}
std::unordered_set<uint32_t> TransformationAddRelaxedDecoration::GetFreshIds()
const {
return std::unordered_set<uint32_t>();
}
} // namespace fuzz
} // namespace spvtools
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