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//===- SPIRVFunction.cpp - Class to represent a SPIR-V Function --- C++ -*-===//
//
// The LLVM/SPIRV Translator
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements Function class for SPIRV.
//
// Copyright (c) 2014 Advanced Micro Devices, Inc. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal with the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimers.
// Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimers in the documentation
// and/or other materials provided with the distribution.
// Neither the names of Advanced Micro Devices, Inc., nor the names of its
// contributors may be used to endorse or promote products derived from this
// Software without specific prior written permission.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH
// THE SOFTWARE.
//
//===----------------------------------------------------------------------===//
#include "SPIRVFunction.h"
#include "SPIRVBasicBlock.h"
#include "SPIRVEntry.h"
#include "SPIRVInstruction.h"
#include "SPIRVStream.h"
#include <algorithm>
#include <functional>
using namespace SPIRV;
SPIRVFunctionParameter::SPIRVFunctionParameter(SPIRVType *TheType,
SPIRVId TheId,
SPIRVFunction *TheParent,
unsigned TheArgNo)
: SPIRVValue(TheParent->getModule(), 3, OpFunctionParameter, TheType,
TheId),
ParentFunc(TheParent), ArgNo(TheArgNo) {
validate();
}
void SPIRVFunctionParameter::foreachAttr(
std::function<void(SPIRVFuncParamAttrKind)> Func) {
auto Locs = Decorates.equal_range(DecorationFuncParamAttr);
for (auto I = Locs.first, E = Locs.second; I != E; ++I) {
auto Attr = static_cast<SPIRVFuncParamAttrKind>(I->second->getLiteral(0));
assert(isValid(Attr));
Func(Attr);
}
}
SPIRVDecoder SPIRVFunction::getDecoder(std::istream &IS) {
return SPIRVDecoder(IS, *this);
}
void SPIRVFunction::encode(spv_ostream &O) const {
getEncoder(O) << Type << Id << FCtrlMask << FuncType;
}
void SPIRVFunction::encodeChildren(spv_ostream &O) const {
O << SPIRVNL();
for (auto &I : Parameters)
O << *I;
O << SPIRVNL();
for (auto &I : BBVec)
O << *I;
O << SPIRVFunctionEnd();
}
void SPIRVFunction::encodeExecutionModes(spv_ostream &O) const {
for (auto &I : ExecModes)
O << *I.second;
}
void SPIRVFunction::decode(std::istream &I) {
SPIRVDecoder Decoder = getDecoder(I);
Decoder >> Type >> Id >> FCtrlMask >> FuncType;
Module->addFunction(this);
SPIRVDBG(spvdbgs() << "Decode function: " << Id << '\n');
Decoder.getWordCountAndOpCode();
while (!I.eof()) {
if (Decoder.OpCode == OpFunctionEnd)
break;
switch (Decoder.OpCode) {
case OpFunctionParameter: {
auto *Param = static_cast<SPIRVFunctionParameter *>(Decoder.getEntry());
assert(Param);
Module->add(Param);
Param->setParent(this);
Parameters.push_back(Param);
Decoder.getWordCountAndOpCode();
break;
}
case OpLabel: {
if (!decodeBB(Decoder))
return;
break;
}
default:
assert(0 && "Invalid SPIRV format");
}
}
}
/// Decode basic block and contained instructions.
/// Do it here instead of in BB:decode to avoid back track in input stream.
bool SPIRVFunction::decodeBB(SPIRVDecoder &Decoder) {
SPIRVBasicBlock *BB = static_cast<SPIRVBasicBlock *>(Decoder.getEntry());
assert(BB);
addBasicBlock(BB);
SPIRVDBG(spvdbgs() << "Decode BB: " << BB->getId() << '\n');
Decoder.setScope(BB);
SPIRVEntry *DebugScope = nullptr;
while (Decoder.getWordCountAndOpCode()) {
if (Decoder.OpCode == OpFunctionEnd || Decoder.OpCode == OpLabel) {
break;
}
if (Decoder.OpCode == OpNoLine || Decoder.OpCode == OpNop) {
continue;
}
SPIRVEntry *Entry = Decoder.getEntry();
if (Decoder.OpCode == OpLine) {
std::shared_ptr<const SPIRVLine> L(static_cast<SPIRVLine *>(Entry));
Module->setCurrentLine(L);
continue;
}
if (!Module->getErrorLog().checkError(Entry->isImplemented(),
SPIRVEC_UnimplementedOpCode,
std::to_string(Entry->getOpCode()))) {
// Bail out if the opcode is not implemented.
Module->setInvalid();
delete Entry;
return false;
}
auto *Inst = static_cast<SPIRVInstruction *>(Entry);
assert(Inst);
if (Inst->getOpCode() == OpUndef) {
Module->add(Inst);
} else if (Inst->isExtInst(SPIRVEIS_NonSemantic_Shader_DebugInfo_100,
SPIRVDebug::DebugNoLine) ||
Inst->isExtInst(SPIRVEIS_NonSemantic_Shader_DebugInfo_200,
SPIRVDebug::DebugNoLine)) {
delete Entry;
continue;
} else if (Inst->isExtInst(SPIRVEIS_NonSemantic_Shader_DebugInfo_100,
SPIRVDebug::DebugLine) ||
Inst->isExtInst(SPIRVEIS_NonSemantic_Shader_DebugInfo_200,
SPIRVDebug::DebugLine)) {
std::shared_ptr<const SPIRVExtInst> DL(static_cast<SPIRVExtInst *>(Inst));
Module->setCurrentDebugLine(DL);
} else {
if (Inst->isExtInst(SPIRVEIS_Debug, SPIRVDebug::Scope) ||
Inst->isExtInst(SPIRVEIS_OpenCL_DebugInfo_100, SPIRVDebug::Scope) ||
Inst->isExtInst(SPIRVEIS_NonSemantic_Shader_DebugInfo_100,
SPIRVDebug::Scope) ||
Inst->isExtInst(SPIRVEIS_NonSemantic_Shader_DebugInfo_200,
SPIRVDebug::Scope)) {
DebugScope = Inst;
} else if (Inst->isExtInst(SPIRVEIS_Debug, SPIRVDebug::NoScope) ||
Inst->isExtInst(SPIRVEIS_OpenCL_DebugInfo_100,
SPIRVDebug::NoScope) ||
Inst->isExtInst(SPIRVEIS_NonSemantic_Shader_DebugInfo_100,
SPIRVDebug::NoScope) ||
Inst->isExtInst(SPIRVEIS_NonSemantic_Shader_DebugInfo_200,
SPIRVDebug::NoScope)) {
DebugScope = nullptr;
} else {
Inst->setDebugScope(DebugScope);
}
BB->addInstruction(Inst);
}
}
Decoder.setScope(this);
return true;
}
void SPIRVFunction::foreachReturnValueAttr(
std::function<void(SPIRVFuncParamAttrKind)> Func) {
auto Locs = Decorates.equal_range(DecorationFuncParamAttr);
for (auto I = Locs.first, E = Locs.second; I != E; ++I) {
auto Attr = static_cast<SPIRVFuncParamAttrKind>(I->second->getLiteral(0));
assert(isValid(Attr));
Func(Attr);
}
}
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