| // Copyright (c) 2016 Google Inc. |
| // |
| // 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 "freeze_spec_constant_value_pass.h" |
| |
| namespace spvtools { |
| namespace opt { |
| |
| Pass::Status FreezeSpecConstantValuePass::Process(ir::Module* module) { |
| bool modified = false; |
| module->ForEachInst([&modified](ir::Instruction* inst) { |
| switch (inst->opcode()) { |
| case SpvOp::SpvOpSpecConstant: |
| inst->SetOpcode(SpvOp::SpvOpConstant); |
| modified = true; |
| break; |
| case SpvOp::SpvOpSpecConstantTrue: |
| inst->SetOpcode(SpvOp::SpvOpConstantTrue); |
| modified = true; |
| break; |
| case SpvOp::SpvOpSpecConstantFalse: |
| inst->SetOpcode(SpvOp::SpvOpConstantFalse); |
| modified = true; |
| break; |
| case SpvOp::SpvOpDecorate: |
| if (inst->GetSingleWordInOperand(1) == |
| SpvDecoration::SpvDecorationSpecId) { |
| inst->ToNop(); |
| modified = true; |
| } |
| break; |
| default: |
| break; |
| } |
| }); |
| return modified ? Status::SuccessWithChange : Status::SuccessWithoutChange; |
| } |
| |
| } // namespace opt |
| } // namespace spvtools |
