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rewrite_kernel.cpp
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#include "kslicer.h"
#include "class_gen.h"
#include "ast_matchers.h"
#include "initial_pass.h"
#include <sstream>
#include <algorithm>
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
bool kslicer::KernelRewriter::VisitDeclRefExpr_Impl(clang::DeclRefExpr* expr) // ISPC explicit naming for thread id's
{
if(!m_explicitIdISPC)
return true;
const std::string text = kslicer::GetRangeSourceCode(expr->getSourceRange(), m_compiler); //
const bool textFound = (m_threadIdExplicitIndexISPC == text);
if(textFound && WasNotRewrittenYet(expr))
{
ReplaceTextOrWorkAround(expr->getSourceRange(), std::string("(") + text + "+programIndex)");
MarkRewritten(expr);
}
return true;
}
bool kslicer::CheckSettersAccess(const clang::MemberExpr* expr, const MainClassInfo* a_codeInfo, const clang::CompilerInstance& a_compiler,
std::string* setterS, std::string* setterM)
{
const clang::Expr* baseExpr1 = expr->getBase();
if(!clang::isa<clang::MemberExpr>(baseExpr1))
return false;
const clang::MemberExpr* baseExpr = clang::dyn_cast<const clang::MemberExpr>(baseExpr1);
clang::ValueDecl* pValueDecl1 = expr->getMemberDecl();
clang::ValueDecl* pValueDecl2 = baseExpr->getMemberDecl();
if(!clang::isa<clang::FieldDecl>(pValueDecl1) || !clang::isa<clang::FieldDecl>(pValueDecl2))
return false;
clang::FieldDecl* pFieldDecl1 = clang::dyn_cast<clang::FieldDecl>(pValueDecl1);
clang::FieldDecl* pFieldDecl2 = clang::dyn_cast<clang::FieldDecl>(pValueDecl2);
clang::RecordDecl* pRecodDecl1 = pFieldDecl1->getParent();
clang::RecordDecl* pRecodDecl2 = pFieldDecl2->getParent();
const std::string typeName1 = pRecodDecl1->getNameAsString(); // MyInOut
const std::string typeName2 = pRecodDecl2->getNameAsString(); // Main class name
const std::string debugText1 = kslicer::GetRangeSourceCode(expr->getSourceRange(), a_compiler); // m_out.summ
const std::string debugText2 = kslicer::GetRangeSourceCode(baseExpr->getSourceRange(), a_compiler); // m_out
if(typeName2 != a_codeInfo->mainClassName)
return false;
auto p = a_codeInfo->m_setterVars.find(debugText2);
if(p == a_codeInfo->m_setterVars.end())
return false;
if(setterS != nullptr)
(*setterS) = debugText2;
if(setterM != nullptr)
(*setterM) = debugText1.substr(debugText1.find(".")+1, debugText1.size());
return true;
}
bool kslicer::KernelRewriter::NeedToRewriteMemberExpr(const clang::MemberExpr* expr, std::string& out_text)
{
clang::ValueDecl* pValueDecl = expr->getMemberDecl();
if(!isa<FieldDecl>(pValueDecl))
return false;
clang::FieldDecl* pFieldDecl = dyn_cast<FieldDecl>(pValueDecl);
std::string fieldName = pFieldDecl->getNameAsString();
clang::RecordDecl* pRecodDecl = pFieldDecl->getParent();
const std::string thisTypeName = kslicer::CleanTypeName(pRecodDecl->getNameAsString());
if(!WasNotRewrittenYet(expr))
return false;
//std::string debugText = kslicer::GetRangeSourceCode(expr->getSourceRange(), m_compiler);
// (1) setter access
//
std::string setter, containerName;
if(CheckSettersAccess(expr, m_codeInfo, m_compiler, &setter, &containerName)) // process setter access
{
out_text = setter + "_" + containerName;
return true;
}
bool usedWithVBR = false;
auto pFoundInAllData = m_codeInfo->allDataMembers.find(fieldName);
if(pFoundInAllData != m_codeInfo->allDataMembers.end())
usedWithVBR = pFoundInAllData->second.bindWithRef;
bool inCompositiClass = false;
auto pPrefix = m_codeInfo->composPrefix.find(thisTypeName);
std::string classPrefix = "";
if(m_pCurrFuncInfo != nullptr)
classPrefix = m_pCurrFuncInfo->prefixName;
if(m_pCurrFuncInfo != nullptr && pPrefix != m_codeInfo->composPrefix.end())
{
fieldName = pPrefix->second + "_" + fieldName;
inCompositiClass = true;
}
else if(thisTypeName != m_mainClassName) // (2) *payload ==> payload[fakeOffset], RTV, process access to arguments payload->xxx
{
Expr* baseExpr = expr->getBase();
assert(baseExpr != nullptr);
const std::string baseName = GetRangeSourceCode(baseExpr->getSourceRange(), m_compiler);
size_t foundId = size_t(-1);
bool needOffset = false;
for(size_t i=0;i<m_args.size();i++)
{
if(m_args[i].name == baseName)
{
foundId = i;
needOffset = m_args[i].needFakeOffset;
break;
}
}
bool isKernel = m_codeInfo->IsKernel(m_currKernel.name) && !processFuncMember;
if(foundId != size_t(-1)) // else we didn't found 'payload' in kernel arguments, so just ignore it
{
// now split 'payload->xxx' to 'payload' (baseName) and 'xxx' (memberName);
//
const std::string exprContent = GetRangeSourceCode(expr->getSourceRange(), m_compiler);
auto pos = exprContent.find("->");
if(pos == std::string::npos && processFuncMember)
return false;
if(pos != std::string::npos)
{
const std::string memberName = exprContent.substr(pos+2);
if(m_codeInfo->megakernelRTV && m_codeInfo->pShaderCC->IsGLSL())
{
out_text = baseName + "." + memberName;
return true;
}
else if(needOffset)
{
out_text = baseName + "[" + m_fakeOffsetExp + "]." + memberName;
return true;
}
}
}
else if(!isKernel && m_codeInfo->pShaderCC->IsGLSL()) // for common member functions
{
const std::string exprContent = GetRangeSourceCode(expr->getSourceRange(), m_compiler);
auto pos = exprContent.find("->");
if(pos != std::string::npos)
{
const std::string memberName = exprContent.substr(pos+2);
out_text = baseName + "." + memberName;
return true;
}
}
}
else if(m_codeInfo->dataClassNames.find(thisTypeName) != m_codeInfo->dataClassNames.end() && usedWithVBR)
{
out_text = "all_references." + fieldName + "." + fieldName;
return true;
}
// (3) member ==> ubo.member
//
const auto pMember = m_variables.find(fieldName);
if(pMember == m_variables.end())
return false;
if(inCompositiClass && WasNotRewrittenYet(expr))
{
if(pMember->second.isContainer)
out_text = pMember->second.name;
else
out_text = m_codeInfo->pShaderCC->UBOAccess(pMember->second.name);
return true;
}
// (2) put ubo->var instead of var, leave containers as they are
// process arrays and large data structures because small can be read once in the beggining of kernel
// // m_currKernel.hasInitPass &&
const bool isInLoopInitPart = !m_codeInfo->IsRTV() && (expr->getSourceRange().getEnd() < m_currKernel.loopInsides.getBegin());
const bool isInLoopFinishPart = !m_codeInfo->IsRTV() && (expr->getSourceRange().getBegin() > m_currKernel.loopInsides.getEnd());
const bool hasLargeSize = true; // (pMember->second.sizeInBytes > kslicer::READ_BEFORE_USE_THRESHOLD);
const bool inMegaKernel = m_codeInfo->megakernelRTV;
const bool subjectedToRed = m_currKernel.subjectedToReduction.find(fieldName) != m_currKernel.subjectedToReduction.end();
if(m_codeInfo->pShaderCC->IsISPC() && subjectedToRed)
return false;
if(!pMember->second.isContainer && WasNotRewrittenYet(expr) && (isInLoopInitPart || isInLoopFinishPart || !subjectedToRed) &&
(isInLoopInitPart || isInLoopFinishPart || pMember->second.isArray || hasLargeSize || inMegaKernel))
{
out_text = m_codeInfo->pShaderCC->UBOAccess(pMember->second.name);
clang::SourceRange thisRng = expr->getSourceRange();
clang::SourceRange endkRng = m_currKernel.loopOutsidesFinish;
if(thisRng.getEnd() == endkRng.getEnd()) // fixing stnrange bug
kslicer::PrintError("possible end-of-loop bug", thisRng, m_compiler.getSourceManager());
return true;
}
return false;
}
bool kslicer::KernelRewriter::VisitFloatingLiteral_Impl(clang::FloatingLiteral* f)
{
std::string originalText = kslicer::GetRangeSourceCode(f->getSourceRange(), m_compiler);
return true;
}
bool kslicer::KernelRewriter::VisitMemberExpr_Impl(clang::MemberExpr* expr)
{
std::string originalText = kslicer::GetRangeSourceCode(expr->getSourceRange(), m_compiler);
std::string rewrittenText;
if(NeedToRewriteMemberExpr(expr, rewrittenText))
{
//ReplaceTextOrWorkAround(expr->getSourceRange(), rewrittenText);
m_rewriter.ReplaceText(expr->getSourceRange(), rewrittenText);
MarkRewritten(expr);
}
return true;
}
std::string kslicer::KernelRewriter::FunctionCallRewrite(const CallExpr* call)
{
const FunctionDecl* fDecl = call->getDirectCallee();
if(fDecl == nullptr) // definitely can't process nullpointer
return "[KernelRewriter::FunctionCallRewrite_ERROR]";
std::string textRes = fDecl->getNameInfo().getName().getAsString(); //m_codeInfo->pShaderCC->ReplaceCallFromStdNamespace(fname, argsType);
textRes += "(";
for(unsigned i=0;i<call->getNumArgs();i++)
{
textRes += RecursiveRewrite(call->getArg(i));
if(i < call->getNumArgs()-1)
textRes += ",";
}
textRes += ")";
return textRes;
}
std::string kslicer::KernelRewriter::FunctionCallRewriteNoName(const clang::CXXConstructExpr* call)
{
std::string textRes = "(";
for(unsigned i=0;i<call->getNumArgs();i++)
{
textRes += RecursiveRewrite(call->getArg(i));
if(i < call->getNumArgs()-1)
textRes += ",";
}
return textRes + ")";
}
std::string kslicer::KernelRewriter::FunctionCallRewrite(const CXXConstructExpr* call)
{
std::string textRes = call->getConstructor()->getNameInfo().getName().getAsString();
return textRes + FunctionCallRewriteNoName(call);
}
bool kslicer::KernelRewriter::VisitCallExpr_Impl(CallExpr* call)
{
if(isa<CXXMemberCallExpr>(call) || isa<CXXConstructExpr>(call)) // process else-where
return true;
const FunctionDecl* fDecl = call->getDirectCallee();
if(fDecl == nullptr) // definitely can't process nullpointer
return true;
// Get name of function
//
std::string fname = fDecl->getNameInfo().getName().getAsString();
if(fDecl->isInStdNamespace())
{
std::string argsType = "";
if(call->getNumArgs() > 0)
{
const Expr* firstArgExpr = call->getArgs()[0];
const QualType qt = firstArgExpr->getType();
argsType = qt.getAsString();
}
if(WasNotRewrittenYet(call))
{
auto debugMeIn = GetRangeSourceCode(call->getSourceRange(), m_compiler);
auto textRes = FunctionCallRewrite(call);
ReplaceTextOrWorkAround(call->getSourceRange(), textRes);
MarkRewritten(call);
//std::cout << " " << text.c_str() << " of type " << argsType.c_str() << "; --> " << textRes.c_str() << std::endl;
}
}
return true;
}
std::string kslicer::KernelRewriter::VectorTypeContructorReplace(const std::string& fname, const std::string& callText)
{
return std::string("make_") + fname + callText;
}
bool kslicer::KernelRewriter::VisitCXXConstructExpr_Impl(CXXConstructExpr* call) // #TODO: seems it forks only for clspv, refactor this function please
{
CXXConstructorDecl* ctorDecl = call->getConstructor();
assert(ctorDecl != nullptr);
// Get name of function
//
const std::string debugText = GetRangeSourceCode(call->getSourceRange(), m_compiler);
const DeclarationNameInfo dni = ctorDecl->getNameInfo();
const DeclarationName dn = dni.getName();
const std::string fname = dn.getAsString();
bool needReplacement = kslicer::IsVectorContructorNeedsReplacement(fname);
bool wasNotDone = WasNotRewrittenYet(call);
if(needReplacement && wasNotDone && !ctorDecl->isCopyOrMoveConstructor()) //
{
const std::string textOrig = GetRangeSourceCode(call->getSourceRange(), m_compiler);
const std::string text = FunctionCallRewriteNoName(call);
const std::string textRes = VectorTypeContructorReplace(fname, text);
//std::cout << "[Kernel::CXXConstructExpr]" << fname.c_str() << std::endl;
if(clang::isa<clang::CXXTemporaryObjectExpr>(call) || IsGLSL())
{
ReplaceTextOrWorkAround(call->getSourceRange(), textRes);
}
else
{
auto pos1 = textOrig.find_first_of("{");
auto pos2 = textOrig.find_first_of("(");
auto pos = std::min(pos1, pos2);
const std::string varName = textOrig.substr(0, pos);
ReplaceTextOrWorkAround(call->getSourceRange(), varName + " = " + textRes);
}
MarkRewritten(call);
}
return true;
}
bool kslicer::KernelRewriter::VisitCXXMemberCallExpr_Impl(CXXMemberCallExpr* f)
{
// Get name of function
//
const DeclarationNameInfo dni = f->getMethodDecl()->getNameInfo();
const DeclarationName dn = dni.getName();
std::string fname = dn.getAsString();
if(kslicer::IsCalledWithArrowAndVirtual(f) && WasNotRewrittenYet(f))
{
auto buffAndOffset = kslicer::GetVFHAccessNodes(f, m_compiler);
if(buffAndOffset.buffName != "" && buffAndOffset.offsetName != "")
{
std::string buffText2 = buffAndOffset.buffName;
std::string offsetText = buffAndOffset.offsetName; //GetRangeSourceCode(buffAndOffset.offsetNode->getSourceRange(), m_compiler);
std::string textCallNoName = "(" + offsetText;
if(f->getNumArgs() != 0)
textCallNoName += ",";
for(unsigned i=0;i<f->getNumArgs();i++)
{
const auto pParam = f->getArg(i);
const clang::QualType typeOfParam = pParam->getType();
const std::string typeNameRewritten = kslicer::ClearTypeName(typeOfParam.getAsString());
if(m_codeInfo->dataClassNames.find(typeNameRewritten) != m_codeInfo->dataClassNames.end())
{
if(i==f->getNumArgs()-1)
textCallNoName[textCallNoName.rfind(",")] = ' ';
continue;
}
textCallNoName += RecursiveRewrite(f->getArg(i));
if(i < f->getNumArgs()-1)
textCallNoName += ",";
}
auto pBuffNameFromVFH = m_codeInfo->m_vhierarchy.find(buffAndOffset.interfaceTypeName);
if(pBuffNameFromVFH != m_codeInfo->m_vhierarchy.end())
buffText2 = pBuffNameFromVFH->second.objBufferName;
std::string vcallFunc = buffAndOffset.interfaceName + "_" + fname + "_" + buffText2 + textCallNoName + ")";
ReplaceTextOrWorkAround(f->getSourceRange(), vcallFunc);
MarkRewritten(f);
}
}
// Get name of "this" type; we should check wherther this member is std::vector<T>
//
const clang::QualType qt = f->getObjectType();
const auto& thisTypeName = qt.getAsString();
CXXRecordDecl* typeDecl = f->getRecordDecl();
const std::string cleanTypeName = kslicer::CleanTypeName(thisTypeName);
const bool isVector = (typeDecl != nullptr && isa<ClassTemplateSpecializationDecl>(typeDecl)) && thisTypeName.find("vector<") != std::string::npos;
const bool isRTX = (thisTypeName == "struct ISceneObject") && (fname.find("RayQuery_") != std::string::npos);
const auto pPrefix = m_codeInfo->composPrefix.find(cleanTypeName);
const bool isPrefixed = (pPrefix != m_codeInfo->composPrefix.end());
if(isVector && WasNotRewrittenYet(f))
{
const std::string exprContent = GetRangeSourceCode(f->getSourceRange(), m_compiler);
const auto posOfPoint = exprContent.find(".");
std::string memberNameA = exprContent.substr(0, posOfPoint);
if(processFuncMember && m_pCurrFuncInfo != nullptr && m_pCurrFuncInfo->hasPrefix)
memberNameA = m_pCurrFuncInfo->prefixName + "_" + memberNameA;
if(fname == "size" || fname == "capacity")
{
const std::string memberNameB = memberNameA + "_" + fname;
ReplaceTextOrWorkAround(f->getSourceRange(), m_codeInfo->pShaderCC->UBOAccess(memberNameB) );
MarkRewritten(f);
}
else if(fname == "resize")
{
if(f->getSourceRange().getBegin() <= m_currKernel.loopOutsidesInit.getEnd()) // TODO: SEEMS INCORECT LOGIC
{
assert(f->getNumArgs() == 1);
const Expr* currArgExpr = f->getArgs()[0];
std::string newSizeValue = RecursiveRewrite(currArgExpr);
std::string memberNameB = memberNameA + "_size = " + newSizeValue;
ReplaceTextOrWorkAround(f->getSourceRange(), m_codeInfo->pShaderCC->UBOAccess(memberNameB) );
MarkRewritten(f);
}
}
else if(fname == "push_back")
{
assert(f->getNumArgs() == 1);
const Expr* currArgExpr = f->getArgs()[0];
std::string newElemValue = RecursiveRewrite(currArgExpr);
std::string memberNameB = memberNameA + "_size";
std::string resulingText = m_codeInfo->pShaderCC->RewritePushBack(memberNameA, memberNameB, newElemValue);
ReplaceTextOrWorkAround(f->getSourceRange(), resulingText);
MarkRewritten(f);
}
else if(fname == "data")
{
ReplaceTextOrWorkAround(f->getSourceRange(), memberNameA);
MarkRewritten(f);
}
else
{
kslicer::PrintError(std::string("Unsuppoted std::vector method") + fname, f->getSourceRange(), m_compiler.getSourceManager());
}
}
else if((isRTX || isPrefixed) && WasNotRewrittenYet(f))
{
const auto exprContent = GetRangeSourceCode(f->getSourceRange(), m_compiler);
const auto posOfPoint = exprContent.find("->"); // seek for "m_pImpl->Func()"
std::string memberNameA;
if(isPrefixed && posOfPoint == std::string::npos) // Func() inside composed class of m_pImpl
memberNameA = pPrefix->second;
else
memberNameA = exprContent.substr(0, posOfPoint); // m_pImpl->Func() inside main class
//bool lastArgIsEmpty = false;
//if((fname == "RayQuery_NearestHit" || fname == "RayQuery_AnyHit") && f->getNumArgs() == 3) // support for motion blur inside RTX
//{
// const auto argText = GetRangeSourceCode(f->getArg(2)->getSourceRange(), m_compiler);
// lastArgIsEmpty = (argText == "");
// if(!lastArgIsEmpty)
// fname += "Motion";
//}
std::string resCallText = memberNameA + "_" + fname + "(";
for(unsigned i=0;i<f->getNumArgs(); i++)
{
resCallText += RecursiveRewrite(f->getArg(i));
//if(i == f->getNumArgs()-2 && lastArgIsEmpty)
// break;
if(i!=f->getNumArgs()-1)
resCallText += ", ";
}
resCallText += ")";
ReplaceTextOrWorkAround(f->getSourceRange(), resCallText);
MarkRewritten(f);
}
return true;
}
bool kslicer::KernelRewriter::VisitReturnStmt_Impl(ReturnStmt* ret)
{
Expr* retExpr = ret->getRetValue();
if (!retExpr)
return true;
if(processFuncMember) // don't rewrite return statements for function members
return true;
if(WasNotRewrittenYet(ret) && m_kernelIsBoolTyped && !m_codeInfo->megakernelRTV)
{
std::string retExprText = RecursiveRewrite(retExpr);
ReplaceTextOrWorkAround(ret->getSourceRange(), std::string("kgenExitCond = ") + retExprText + ";"); // "; goto KGEN_EPILOG"); !!! GLSL DOE NOT SUPPPRT GOTOs!!!
MarkRewritten(ret);
return true;
}
clang::Expr* pRetExpr = ret->getRetValue();
if(!isa<clang::CallExpr>(pRetExpr))
return true;
clang::CallExpr* callExpr = dyn_cast<CallExpr>(pRetExpr);
// assotiate this buffer with target hierarchy
//
auto retQt = pRetExpr->getType();
if(retQt->isPointerType())
retQt = retQt->getPointeeType();
std::string fname = callExpr->getDirectCallee()->getNameInfo().getName().getAsString();
if(fname != "MakeObjPtr")
return true;
assert(callExpr->getNumArgs() == 2);
const Expr* firstArgExpr = callExpr->getArgs()[0];
const Expr* secondArgExpr = callExpr->getArgs()[1];
if(WasNotRewrittenYet(ret) && !m_codeInfo->megakernelRTV)
{
// change 'return MakeObjPtr(objPtr, ObjData) to 'kgen_objPtr = objPtr'
//
std::string retExprText = RecursiveRewrite(firstArgExpr);
ReplaceTextOrWorkAround(ret->getSourceRange(), std::string("{ kgen_objPtr = ") + retExprText + "; }"); // goto KGEN_EPILOG;
MarkRewritten(ret);
}
return true;
}
bool kslicer::KernelRewriter::NameNeedsFakeOffset(const std::string& a_name) const
{
bool exclude = false;
for(auto arg : m_currKernel.args)
{
if(arg.needFakeOffset && arg.name == a_name)
exclude = true;
}
return exclude;
}
bool kslicer::KernelRewriter::CheckIfExprHasArgumentThatNeedFakeOffset(const std::string& exprStr)
{
bool needOffset = false;
for(const auto arg: m_args)
{
if(exprStr.find(arg.name) != std::string::npos)
{
if(arg.needFakeOffset)
{
needOffset = true;
break;
}
}
}
return needOffset;
}
bool kslicer::KernelRewriter::VisitUnaryOperator_Impl(UnaryOperator* expr)
{
Expr* subExpr = expr->getSubExpr();
if(subExpr == nullptr)
return true;
const auto op = expr->getOpcodeStr(expr->getOpcode());
if(op == "++" || op == "--") // detect ++ and -- for reduction
{
auto opRange = expr->getSourceRange();
if(opRange.getEnd() <= m_currKernel.loopInsides.getBegin() ||
opRange.getBegin() >= m_currKernel.loopInsides.getEnd() ) // not inside loop
return true;
const auto op = expr->getOpcodeStr(expr->getOpcode());
std::string leftStr = GetRangeSourceCode(subExpr->getSourceRange(), m_compiler);
auto p = m_currKernel.usedMembers.find(leftStr);
if(p != m_currKernel.usedMembers.end() && WasNotRewrittenYet(expr))
{
KernelInfo::ReductionAccess access;
access.type = KernelInfo::REDUCTION_TYPE::UNKNOWN;
access.rightExpr = "";
access.leftExpr = leftStr;
access.dataType = subExpr->getType().getAsString();
if(op == "++")
access.type = KernelInfo::REDUCTION_TYPE::ADD_ONE;
else if(op == "--")
access.type = KernelInfo::REDUCTION_TYPE::SUB_ONE;
{
if(m_codeInfo->pShaderCC->IsISPC())
return true;
std::string leftStr2 = RecursiveRewrite(expr->getSubExpr());
std::string localIdStr = m_codeInfo->pShaderCC->LocalIdExpr(m_currKernel.GetDim(), m_currKernel.wgSize);
ReplaceTextOrWorkAround(expr->getSourceRange(), leftStr2 + "Shared[" + localIdStr + "]++");
MarkRewritten(expr);
}
}
}
// detect " *(something)"
//
if(expr->canOverflow() || op != "*") // -UnaryOperator ...'LiteMath::uint':'unsigned int' lvalue prefix '*' cannot overflow
return true;
std::string exprInside = RecursiveRewrite(subExpr);
// check if this argument actually need fake Offset
//
const bool needOffset = CheckIfExprHasArgumentThatNeedFakeOffset(exprInside);
if(needOffset && WasNotRewrittenYet(expr))
{
if(m_codeInfo->megakernelRTV || m_fakeOffsetExp == "")
ReplaceTextOrWorkAround(expr->getSourceRange(), exprInside);
else
ReplaceTextOrWorkAround(expr->getSourceRange(), exprInside + "[" + m_fakeOffsetExp + "]");
MarkRewritten(expr);
}
return true;
}
void kslicer::KernelRewriter::ProcessReductionOp(const std::string& op, const Expr* lhs, const Expr* rhs, const Expr* expr)
{
auto pShaderRewriter = m_codeInfo->pShaderFuncRewriter;
// detect cases like "m_bodies[i].vel_charge.x += acceleration.x", extract "m_bodies[i]"; "vel_charge.x" is not supported right now !!!
//
while(clang::isa<clang::MemberExpr>(lhs))
{
const clang::MemberExpr* lhsMember = clang::dyn_cast<const clang::MemberExpr>(lhs);
lhs = lhsMember->getBase();
}
if(clang::isa<clang::CXXOperatorCallExpr>(lhs)) // do not process here code like "vector[i] += ..." or "texture[int2(x,y)] += ..."
return;
std::string leftVar = GetRangeSourceCode(lhs->getSourceRange().getBegin(), m_compiler);
std::string leftStr = GetRangeSourceCode(lhs->getSourceRange(), m_compiler);
auto p = m_currKernel.usedMembers.find(leftVar);
if(p != m_currKernel.usedMembers.end())
{
KernelInfo::ReductionAccess access;
access.type = KernelInfo::REDUCTION_TYPE::UNKNOWN;
access.rightExpr = GetRangeSourceCode(rhs->getSourceRange(), m_compiler);
access.leftExpr = leftStr;
access.dataType = rhs->getType().getAsString();
ReplaceFirst(access.dataType, "const ", "");
access.dataType = pShaderRewriter->RewriteStdVectorTypeStr(access.dataType);
if(leftVar != leftStr && clang::isa<clang::ArraySubscriptExpr>(lhs))
{
auto lhsArray = clang::dyn_cast<const clang::ArraySubscriptExpr>(lhs);
const clang::Expr* idx = lhsArray->getIdx(); // array index
const clang::Expr* name = lhsArray->getBase(); // array name
access.leftIsArray = true;
access.arraySize = 0;
access.arrayIndex = GetRangeSourceCode(idx->getSourceRange(), m_compiler);
access.arrayName = GetRangeSourceCode(name->getSourceRange(), m_compiler);
// extract array size
//
const clang::Expr* nextNode = kslicer::RemoveImplicitCast(lhsArray->getLHS());
if(clang::isa<clang::MemberExpr>(nextNode))
{
const MemberExpr* pMemberExpr = dyn_cast<const MemberExpr>(nextNode);
const ValueDecl* valDecl = pMemberExpr->getMemberDecl();
const QualType qt = valDecl->getType();
const auto typePtr = qt.getTypePtr();
if(typePtr->isConstantArrayType())
{
auto arrayType = dyn_cast<const ConstantArrayType>(typePtr);
access.arraySize = arrayType->getSize().getLimitedValue();
}
}
if(access.arraySize == 0)
kslicer::PrintError("[KernelRewriter::ProcessReductionOp]: can't determine array size ", lhs->getSourceRange(), m_compiler.getSourceManager());
}
if(op == "+=")
access.type = KernelInfo::REDUCTION_TYPE::ADD;
else if(op == "*=")
access.type = KernelInfo::REDUCTION_TYPE::MUL;
else if(op == "-=")
access.type = KernelInfo::REDUCTION_TYPE::SUB;
//auto exprHash = kslicer::GetHashOfSourceRange(expr->getSourceRange());
if(WasNotRewrittenYet(expr))
{
if(m_codeInfo->pShaderCC->IsISPC())
return;
std::string rightStr2 = RecursiveRewrite(rhs);
std::string localIdStr = m_codeInfo->pShaderCC->LocalIdExpr(m_currKernel.GetDim(), m_currKernel.wgSize);
if(access.leftIsArray)
ReplaceTextOrWorkAround(expr->getSourceRange(), access.arrayName + "Shared[" + access.arrayIndex + "][" + localIdStr + "] " + access.GetOp(m_codeInfo->pShaderCC) + " " + rightStr2);
else
ReplaceTextOrWorkAround(expr->getSourceRange(), leftVar + "Shared[" + localIdStr + "] " + access.GetOp(m_codeInfo->pShaderCC) + " " + rightStr2);
MarkRewritten(expr);
}
}
}
bool kslicer::KernelRewriter::VisitCompoundAssignOperator_Impl(CompoundAssignOperator* expr)
{
auto opRange = expr->getSourceRange();
if(opRange.getEnd() <= m_currKernel.loopInsides.getBegin() ||
opRange.getBegin() >= m_currKernel.loopInsides.getEnd() ) // not inside loop
return true;
const Expr* lhs = expr->getLHS();
const Expr* rhs = expr->getRHS();
const auto op = expr->getOpcodeStr();
ProcessReductionOp(op.str(), lhs, rhs, expr);
return true;
}
void kslicer::KernelRewriter::ProcessReadWriteTexture(clang::CXXOperatorCallExpr* expr, bool write)
{
const auto currAccess = write ? kslicer::TEX_ACCESS::TEX_ACCESS_WRITE : kslicer::TEX_ACCESS::TEX_ACCESS_READ;
const auto hash = kslicer::GetHashOfSourceRange(expr->getSourceRange());
if(m_visitedTexAccessNodes.find(hash) != m_visitedTexAccessNodes.end())
return;
std::string objName = GetRangeSourceCode(SourceRange(expr->getExprLoc()), m_compiler);
// (1) process if member access
//
auto pMember = m_codeInfo->allDataMembers.find(objName);
if(pMember != m_codeInfo->allDataMembers.end())
{
pMember->second.tmask = kslicer::TEX_ACCESS(int(pMember->second.tmask) | int(currAccess));
auto p = m_currKernel.texAccessInMemb.find(objName);
if(p != m_currKernel.texAccessInMemb.end())
p->second = kslicer::TEX_ACCESS( int(p->second) | int(currAccess));
else
m_currKernel.texAccessInMemb[objName] = currAccess;
}
// (2) process if kernel argument access
//
for(const auto& arg : m_currKernel.args)
{
if(arg.name == objName)
{
auto p = m_currKernel.texAccessInArgs.find(objName);
if(p != m_currKernel.texAccessInArgs.end())
p->second = kslicer::TEX_ACCESS( int(p->second) | int(currAccess));
else
m_currKernel.texAccessInArgs[objName] = currAccess;
}
}
m_visitedTexAccessNodes.insert(hash);
}
void kslicer::KernelRewriter::DetectTextureAccess(clang::CXXMemberCallExpr* call)
{
clang::CXXMethodDecl* fDecl = call->getMethodDecl();
if(fDecl == nullptr)
return;
//std::string debugText = GetRangeSourceCode(call->getSourceRange(), m_compiler);
std::string fname = fDecl->getNameInfo().getName().getAsString();
clang::Expr* pTexName = call->getImplicitObjectArgument();
std::string objName = GetRangeSourceCode(pTexName->getSourceRange(), m_compiler);
if(fname == "sample" || fname == "Sample")
{
auto samplerArg = call->getArg(0);
std::string samplerName = GetRangeSourceCode(samplerArg->getSourceRange(), m_compiler);
// (1) process if member access
//
auto pMember = m_codeInfo->allDataMembers.find(objName);
if(pMember != m_codeInfo->allDataMembers.end())
{
pMember->second.tmask = kslicer::TEX_ACCESS( int(pMember->second.tmask) | int(kslicer::TEX_ACCESS::TEX_ACCESS_SAMPLE));
auto p = m_currKernel.texAccessInMemb.find(objName);
if(p != m_currKernel.texAccessInMemb.end())
{
p->second = kslicer::TEX_ACCESS( int(p->second) | int(kslicer::TEX_ACCESS::TEX_ACCESS_SAMPLE));
m_currKernel.texAccessSampler[objName] = samplerName;
}
else
{
m_currKernel.texAccessInMemb [objName] = kslicer::TEX_ACCESS::TEX_ACCESS_SAMPLE;
m_currKernel.texAccessSampler[objName] = samplerName;
}
}
// (2) process if kernel argument access
//
for(const auto& arg : m_currKernel.args)
{
if(arg.name == objName)
{
auto p = m_currKernel.texAccessInArgs.find(objName);
if(p != m_currKernel.texAccessInArgs.end())
{
p->second = kslicer::TEX_ACCESS( int(p->second) | int(kslicer::TEX_ACCESS::TEX_ACCESS_SAMPLE));
m_currKernel.texAccessSampler[objName] = samplerName;
}
else
{
m_currKernel.texAccessInArgs[objName] = kslicer::TEX_ACCESS::TEX_ACCESS_SAMPLE;
m_currKernel.texAccessSampler[objName] = samplerName;
}
}
}
}
}
void kslicer::KernelRewriter::DetectTextureAccess(CXXOperatorCallExpr* expr)
{
std::string op = GetRangeSourceCode(SourceRange(expr->getOperatorLoc()), m_compiler);
std::string debugText = GetRangeSourceCode(expr->getSourceRange(), m_compiler);
if(expr->isAssignmentOp()) // detect a_brightPixels[coord] = color;
{
clang::Expr* left = expr->getArg(0);
if(clang::isa<clang::CXXOperatorCallExpr>(left))
{
clang::CXXOperatorCallExpr* leftOp = clang::dyn_cast<clang::CXXOperatorCallExpr>(left);
std::string op2 = GetRangeSourceCode(SourceRange(leftOp->getOperatorLoc()), m_compiler);
if(op2 == "]" || op2 == "[" || op2 == "[]")
ProcessReadWriteTexture(leftOp, true);
}
}
else if(op == "]" || op == "[" || op == "[]")
ProcessReadWriteTexture(expr, false);
}
bool kslicer::KernelRewriter::VisitCXXOperatorCallExpr_Impl(CXXOperatorCallExpr* expr)
{
std::string debugTxt = kslicer::GetRangeSourceCode(expr->getSourceRange(), m_compiler);
DetectTextureAccess(expr);
auto opRange = expr->getSourceRange();
if(opRange.getEnd() <= m_currKernel.loopInsides.getBegin() ||
opRange.getBegin() >= m_currKernel.loopInsides.getEnd() ) // not inside loop
return true;
const auto numArgs = expr->getNumArgs();
if(numArgs != 2)
return true;
std::string op = GetRangeSourceCode(SourceRange(expr->getOperatorLoc()), m_compiler);
if(op == "+=" || op == "-=" || op == "*=")
{
const Expr* lhs = expr->getArg(0);
const Expr* rhs = expr->getArg(1);
ProcessReductionOp(op, lhs, rhs, expr);
}
else if (op == "=")
{
const Expr* lhs = expr->getArg(0);
const Expr* rhs = expr->getArg(1);
DetectFuncReductionAccess(lhs, rhs, expr);
}
return true;
}
void kslicer::KernelRewriter::DetectTextureAccess(clang::BinaryOperator* expr)
{
std::string op = GetRangeSourceCode(SourceRange(expr->getOperatorLoc()), m_compiler);
std::string debugText = GetRangeSourceCode(expr->getSourceRange(), m_compiler);
if(expr->isAssignmentOp()) // detect a_brightPixels[coord] = color;
{
clang::Expr* left = expr->getLHS();
if(clang::isa<clang::CXXOperatorCallExpr>(left))
{
clang::CXXOperatorCallExpr* leftOp = clang::dyn_cast<clang::CXXOperatorCallExpr>(left);
std::string op2 = GetRangeSourceCode(SourceRange(leftOp->getOperatorLoc()), m_compiler);
if(op2 == "]" || op2 == "[" || op2 == "[]")
ProcessReadWriteTexture(leftOp, true);
}
}
else if((op == "]" || op == "[" || op == "[]") && clang::isa<clang::CXXOperatorCallExpr>(expr))
ProcessReadWriteTexture(clang::dyn_cast<clang::CXXOperatorCallExpr>(expr), false);
}
void kslicer::KernelRewriter::DetectFuncReductionAccess(const clang::Expr* lhs, const clang::Expr* rhs, const clang::Expr* expr)
{
if(!isa<MemberExpr>(lhs))
return;
std::string leftStr = GetRangeSourceCode(lhs->getSourceRange(), m_compiler);
std::string rightStr = GetRangeSourceCode(rhs->getSourceRange(), m_compiler);
auto p = m_currKernel.usedMembers.find(leftStr);
if(p == m_currKernel.usedMembers.end())
return;
if(clang::isa<clang::MaterializeTemporaryExpr>(rhs))
{
auto tmp = dyn_cast<clang::MaterializeTemporaryExpr>(rhs);
rhs = tmp->getSubExpr();
}
if(!clang::isa<clang::CallExpr>(rhs))
{
PrintWarning("unsupported expression for reduction via assigment inside loop; must be 'a = f(a,b)'", rhs->getSourceRange(), m_compiler.getSourceManager());
PrintWarning("reduction for variable '" + leftStr + "' will not be generated, sure this is ok for you?", rhs->getSourceRange(), m_compiler.getSourceManager());
return;
}
auto call = dyn_cast<clang::CallExpr>(rhs);
auto numArgs = call->getNumArgs();
if(numArgs != 2)
{
PrintError("function which is used in reduction must have 2 args; a = f(a,b)'", expr->getSourceRange(), m_compiler.getSourceManager());
return;
}
const clang::Expr* arg0 = call->getArg(0);
const clang::Expr* arg1 = call->getArg(1);
std::string arg0Str = GetRangeSourceCode(arg0->getSourceRange(), m_compiler);
std::string arg1Str = GetRangeSourceCode(arg1->getSourceRange(), m_compiler);
std::string secondArg;
if(arg0Str == leftStr)
{
secondArg = arg1Str;
}
else if(arg1Str == leftStr)
{
secondArg = arg0Str;
}
else
{
PrintError("incorrect arguments of reduction function, one of them must be same as assigment result; a = f(a,b)'", expr->getSourceRange(), m_compiler.getSourceManager());
return;
}
std::string callExpr = GetRangeSourceCode(call->getSourceRange(), m_compiler);
std::string fname = callExpr.substr(0, callExpr.find_first_of('('));
KernelInfo::ReductionAccess access;
access.type = KernelInfo::REDUCTION_TYPE::FUNC;
access.funcName = fname;
access.rightExpr = secondArg;
access.leftExpr = leftStr;
access.dataType = lhs->getType().getAsString();
//auto exprHash = kslicer::GetHashOfSourceRange(expr->getSourceRange());
if (WasNotRewrittenYet(expr) && !m_codeInfo->pShaderCC->IsISPC())
{
std::string argsType = "";
if(numArgs > 0)
{
const clang::Expr* firstArgExpr = arg0;
const clang::QualType qt = firstArgExpr->getType();
argsType = qt.getAsString();
}
const std::string leftStr2 = RecursiveRewrite(arg0);
const std::string rightStr2 = RecursiveRewrite(arg1);
const std::string localIdStr = m_codeInfo->pShaderCC->LocalIdExpr(m_currKernel.GetDim(), m_currKernel.wgSize);
const std::string left = leftStr2 + "Shared[" + localIdStr + "]";
fname = m_codeInfo->pShaderCC->ReplaceCallFromStdNamespace(fname, argsType);
ReplaceTextOrWorkAround(expr->getSourceRange(), left + " = " + fname + "(" + left + ", " + rightStr2 + ")" );
MarkRewritten(expr);
}
}