const char *
TR_Debug::getNamex(TR::Snippet *snippet)
{
switch (snippet->getKind())
{
#ifdef J9_PROJECT_SPECIFIC
case TR::Snippet::IsCall:
return "Call Snippet";
break;
case TR::Snippet::IsVPicData:
return "VPic Data";
break;
case TR::Snippet::IsIPicData:
return "IPic Data";
break;
case TR::Snippet::IsUnresolvedVirtualCall:
return "Unresolved Virtual Call Snippet";
break;
case TR::Snippet::IsWriteBarrier:
case TR::Snippet::IsWriteBarrierAMD64:
return "Write Barrier Snippet";
break;
case TR::Snippet::IsJNIPause:
return "JNI Pause Snippet";
break;
case TR::Snippet::IsScratchArgHelperCall:
return "Helper Call Snippet with scratch-reg argument";
break;
case TR::Snippet::IsForceRecompilation:
return "Force Recompilation Snippet";
break;
case TR::Snippet::IsRecompilation:
return "Recompilation Snippet";
break;
#endif
case TR::Snippet::IsCheckFailure:
return "Check Failure Snippet";
break;
case TR::Snippet::IsCheckFailureWithResolve:
return "Check Failure Snippet with Resolve Call";
break;
case TR::Snippet::IsBoundCheckWithSpineCheck:
return "Bound Check with Spine Check Snippet";
break;
case TR::Snippet::IsSpineCheck:
return "Spine Check Snippet";
break;
case TR::Snippet::IsConstantData:
return "Constant Data Snippet";
break;
case TR::Snippet::IsData:
return "Data Snippet";
case TR::Snippet::IsDivideCheck:
return "Divide Check Snippet";
break;
#ifdef J9_PROJECT_SPECIFIC
case TR::Snippet::IsGuardedDevirtual:
return "Guarded Devirtual Snippet";
break;
#endif
case TR::Snippet::IsHelperCall:
return "Helper Call Snippet";
break;
case TR::Snippet::IsFPConversion:
return "FP Conversion Snippet";
break;
case TR::Snippet::IsFPConvertToInt:
return "FP Convert To Int Snippet";
break;
case TR::Snippet::IsFPConvertToLong:
return "FP Convert To Long Snippet";
break;
case TR::Snippet::IsPassJNINull:
return "Pass JNI Null Snippet";
break;
case TR::Snippet::IsUnresolvedDataIA32:
case TR::Snippet::IsUnresolvedDataAMD64:
return "Unresolved Data Snippet";
break;
case TR::Snippet::IsRestart:
default:
TR_ASSERT(0, "unexpected snippet kind: %d", snippet->getKind());
return "Unknown snippet kind";
}
}
void
OMR::Symbol::setMemoryTypeShadowSymbol()
{
TR_ASSERT(self()->isShadow(), "assertion failure");
_flags.set(MemoryTypeShadow);
}
void
OMR::Symbol::setStartOfColdInstructionStream()
{
TR_ASSERT(self()->isLabel(), "assertion failure"); _flags.set(StartOfColdInstructionStream);
}
void
OMR::Symbol::setRecompilationCounter()
{
TR_ASSERT(self()->isStatic(), "assertion failure");
_flags.set(RecompilationCounter);
}
void
OMR::Symbol::setArrayletShadowSymbol()
{
TR_ASSERT(self()->isShadow(), "assertion failure");
_flags.set(ArrayletShadow);
}
void
OMR::Symbol::setAddressIsCPIndexOfStatic(bool b)
{
TR_ASSERT(self()->isStatic(), "assertion failure");
_flags.set(AddressIsCPIndexOfStatic, b);
}
void
OMR::Symbol::setStartPC()
{
TR_ASSERT(self()->isStatic(), "assertion failure");
_flags.set(StartPC);
}
void
OMR::Symbol::setLocalObject()
{
TR_ASSERT(self()->isAuto(), "assertion failure");
_flags.set(IsLocalObject);
}
void
OMR::Symbol::setBehaveLikeNonTemp()
{
TR_ASSERT(self()->isAuto(), "assertion failure");
_flags.set(BehaveLikeNonTemp);
}
TR::Register *TR::AMD64SystemLinkage::buildDirectDispatch(
TR::Node *callNode,
bool spillFPRegs)
{
TR::SymbolReference *methodSymRef = callNode->getSymbolReference();
TR::MethodSymbol *methodSymbol = methodSymRef->getSymbol()->castToMethodSymbol();
TR::Register *returnReg;
// Allocate adequate register dependencies.
//
// pre = number of argument registers
// post = number of volatile + return register
//
uint32_t pre = getProperties().getNumIntegerArgumentRegisters() + getProperties().getNumFloatArgumentRegisters();
uint32_t post = getProperties().getNumVolatileRegisters() + (callNode->getDataType() == TR::NoType ? 0 : 1);
#if defined (PYTHON) && 0
// Treat all preserved GP regs as volatile until register map support available.
//
post += getProperties().getNumberOfPreservedGPRegisters();
#endif
TR::RegisterDependencyConditions *preDeps = generateRegisterDependencyConditions(pre, 0, cg());
TR::RegisterDependencyConditions *postDeps = generateRegisterDependencyConditions(0, post, cg());
// Evaluate outgoing arguments on the system stack and build pre-conditions.
//
int32_t memoryArgSize = buildArgs(callNode, preDeps);
// Build post-conditions.
//
returnReg = buildVolatileAndReturnDependencies(callNode, postDeps);
postDeps->stopAddingPostConditions();
// Find the second scratch register in the post dependency list.
//
TR::Register *scratchReg = NULL;
TR::RealRegister::RegNum scratchRegIndex = getProperties().getIntegerScratchRegister(1);
for (int32_t i=0; i<post; i++)
{
if (postDeps->getPostConditions()->getRegisterDependency(i)->getRealRegister() == scratchRegIndex)
{
scratchReg = postDeps->getPostConditions()->getRegisterDependency(i)->getRegister();
break;
}
}
#if defined(PYTHON) && 0
// For Python, store the instruction that contains the GC map at this site into
// the frame object.
//
TR::SymbolReference *frameObjectSymRef =
comp()->getSymRefTab()->findOrCreateAutoSymbol(comp()->getMethodSymbol(), 0, TR::Address, true, false, true);
TR::Register *frameObjectRegister = cg()->allocateRegister();
generateRegMemInstruction(
L8RegMem,
callNode,
frameObjectRegister,
generateX86MemoryReference(frameObjectSymRef, cg()),
cg());
TR::RealRegister *espReal = cg()->machine()->getRealRegister(TR::RealRegister::esp);
TR::Register *gcMapPCRegister = cg()->allocateRegister();
generateRegMemInstruction(
LEA8RegMem,
callNode,
gcMapPCRegister,
generateX86MemoryReference(espReal, -8, cg()),
cg());
// Use "volatile" registers across the call. Once proper register map support
// is implemented, r14 and r15 will no longer be volatile and a different pair
// should be chosen.
//
TR::RegisterDependencyConditions *gcMapDeps = generateRegisterDependencyConditions(0, 2, cg());
gcMapDeps->addPostCondition(frameObjectRegister, TR::RealRegister::r14, cg());
gcMapDeps->addPostCondition(gcMapPCRegister, TR::RealRegister::r15, cg());
gcMapDeps->stopAddingPostConditions();
generateMemRegInstruction(
S8MemReg,
callNode,
generateX86MemoryReference(frameObjectRegister, fe()->getPythonGCMapPCOffsetInFrame(), cg()),
gcMapPCRegister,
gcMapDeps,
cg());
cg()->stopUsingRegister(frameObjectRegister);
cg()->stopUsingRegister(gcMapPCRegister);
#endif
TR::Instruction *instr;
if (methodSymbol->getMethodAddress())
{
TR_ASSERT(scratchReg, "could not find second scratch register");
auto LoadRegisterInstruction = generateRegImm64SymInstruction(
MOV8RegImm64,
callNode,
scratchReg,
(uintptr_t)methodSymbol->getMethodAddress(),
methodSymRef,
cg());
if (comp()->getOption(TR_EmitRelocatableELFFile))
{
LoadRegisterInstruction->setReloKind(TR_NativeMethodAbsolute);
}
instr = generateRegInstruction(CALLReg, callNode, scratchReg, preDeps, cg());
}
else
{
instr = generateImmSymInstruction(CALLImm4, callNode, (uintptrj_t)methodSymbol->getMethodAddress(), methodSymRef, preDeps, cg());
}
cg()->resetIsLeafMethod();
instr->setNeedsGCMap(getProperties().getPreservedRegisterMapForGC());
cg()->stopUsingRegister(scratchReg);
TR::LabelSymbol *postDepLabel = generateLabelSymbol(cg());
generateLabelInstruction(LABEL, callNode, postDepLabel, postDeps, cg());
return returnReg;
}
void
OMR::Symbol::setSpillTempAuto()
{
TR_ASSERT(self()->isAuto(), "assertion failure");
_flags.set(SpillTemp);
}
TR::AMD64Win64FastCallLinkage::AMD64Win64FastCallLinkage(TR::CodeGenerator *cg)
: TR::AMD64SystemLinkage(cg)
{
uint8_t r, p;
// For SysV/Win64 ABI, the outgoing argument regions need to be 16/32 bytes
// aligned, we will reserve outgoing arguments size in prologue to get the
// alignment properly handled, that is the reason why
// ReservesOutgoingArgsInPrologue is needed.
//
_properties._properties =
EightBytePointers |
EightByteParmSlots |
CallerCleanup |
IntegersInRegisters |
LongsInRegisters |
FloatsInRegisters |
LinkageRegistersAssignedByCardinalPosition |
CallerFrameAllocatesSpaceForLinkageRegs |
ReservesOutgoingArgsInPrologue
;
// Integer arguments
//
p=0;
_properties._firstIntegerArgumentRegister = p;
_properties._argumentRegisters[p++] = TR::RealRegister::ecx;
_properties._argumentRegisters[p++] = TR::RealRegister::edx;
_properties._argumentRegisters[p++] = TR::RealRegister::r8;
_properties._argumentRegisters[p++] = TR::RealRegister::r9;
_properties._numIntegerArgumentRegisters = p;
// Float arguments
//
_properties._firstFloatArgumentRegister = p;
for(r=0; r<=3; r++)
_properties._argumentRegisters[p++] = TR::RealRegister::xmmIndex(r);
_properties._numFloatArgumentRegisters = p - _properties._numIntegerArgumentRegisters;
// Preserved registers.
//
p = 0;
_properties._preservedRegisters[p++] = TR::RealRegister::edi;
_properties._preservedRegisters[p++] = TR::RealRegister::esi;
_properties._preservedRegisters[p++] = TR::RealRegister::ebx;
_properties._preservedRegisters[p++] = TR::RealRegister::r12;
_properties._preservedRegisters[p++] = TR::RealRegister::r13;
_properties._preservedRegisters[p++] = TR::RealRegister::r14;
_properties._preservedRegisters[p++] = TR::RealRegister::r15;
_properties._numberOfPreservedGPRegisters = p;
for (r=6; r<=15; r++)
_properties._preservedRegisters[p++] = TR::RealRegister::xmmIndex(r);
_properties._numberOfPreservedXMMRegisters = p - _properties._numberOfPreservedGPRegisters;
_properties._maxRegistersPreservedInPrologue = p;
_properties._numPreservedRegisters = p;
// Volatile registers.
//
p = 0;
_properties._volatileRegisters[p++] = TR::RealRegister::eax;
_properties._volatileRegisters[p++] = TR::RealRegister::ecx;
_properties._volatileRegisters[p++] = TR::RealRegister::edx;
_properties._volatileRegisters[p++] = TR::RealRegister::r8;
_properties._volatileRegisters[p++] = TR::RealRegister::r9;
_properties._volatileRegisters[p++] = TR::RealRegister::r10;
_properties._volatileRegisters[p++] = TR::RealRegister::r11;
_properties._numberOfVolatileGPRegisters = p;
for(r=0; r<=5; r++)
_properties._volatileRegisters[p++] = TR::RealRegister::xmmIndex(r);
_properties._numberOfVolatileXMMRegisters = p - _properties._numberOfVolatileGPRegisters;
_properties._numVolatileRegisters = p;
// Return registers.
//
_properties._returnRegisters[0] = TR::RealRegister::eax;
_properties._returnRegisters[1] = TR::RealRegister::xmm0;
_properties._returnRegisters[2] = TR::RealRegister::NoReg;
// Scratch registers.
//
_properties._scratchRegisters[0] = TR::RealRegister::r10;
_properties._scratchRegisters[1] = TR::RealRegister::r11;
_properties._scratchRegisters[2] = TR::RealRegister::eax;
_properties._numScratchRegisters = 3;
_properties._preservedRegisterMapForGC = 0;
_properties._framePointerRegister = TR::RealRegister::ebp;
_properties._methodMetaDataRegister = TR::RealRegister::NoReg;
_properties._offsetToFirstParm = RETURN_ADDRESS_SIZE;
_properties._offsetToFirstLocal = _properties.getAlwaysDedicateFramePointerRegister() ? -GPR_REG_WIDTH : 0;
memset(_properties._registerFlags, 0, sizeof(_properties._registerFlags));
// Integer arguments/return
//
_properties._registerFlags[TR::RealRegister::ecx] = IntegerArgument;
_properties._registerFlags[TR::RealRegister::edx] = IntegerArgument;
_properties._registerFlags[TR::RealRegister::r8] = IntegerArgument;
_properties._registerFlags[TR::RealRegister::r9] = IntegerArgument;
_properties._registerFlags[TR::RealRegister::eax] = IntegerReturn;
// Float arguments/return
//
_properties._registerFlags[TR::RealRegister::xmm0] = FloatArgument | FloatReturn;
for (r=1; r <= 3; r++)
_properties._registerFlags[TR::RealRegister::xmmIndex(r)] = FloatArgument;
// Preserved
//
_properties._registerFlags[TR::RealRegister::edi] = Preserved;
_properties._registerFlags[TR::RealRegister::esi] = Preserved;
_properties._registerFlags[TR::RealRegister::ebx] = Preserved;
_properties._registerFlags[TR::RealRegister::ebp] = Preserved;
_properties._registerFlags[TR::RealRegister::esp] = Preserved;
for (r=12; r <= 15; r++)
_properties._registerFlags[TR::RealRegister::rIndex(r)] = Preserved;
p = 0;
// Volatiles that aren't linkage regs
//
if (OMR::X86::AMD64::Machine::enableNewPickRegister())
{
if (OMR::X86::AMD64::Machine::numGPRRegsWithheld(cg) == 0)
{
_properties._allocationOrder[p++] = TR::RealRegister::eax;
_properties._allocationOrder[p++] = TR::RealRegister::r10;
}
else
TR_ASSERT(OMR::X86::AMD64::Machine::numRegsWithheld(cg) == 2, "numRegsWithheld: only 0 and 2 currently supported");
}
_properties._allocationOrder[p++] = TR::RealRegister::r11;
// Linkage regs
//
_properties._allocationOrder[p++] = TR::RealRegister::ecx;
_properties._allocationOrder[p++] = TR::RealRegister::edx;
_properties._allocationOrder[p++] = TR::RealRegister::r8;
_properties._allocationOrder[p++] = TR::RealRegister::r9;
// Preserved regs
//
_properties._allocationOrder[p++] = TR::RealRegister::edi;
_properties._allocationOrder[p++] = TR::RealRegister::esi;
_properties._allocationOrder[p++] = TR::RealRegister::ebx;
_properties._allocationOrder[p++] = TR::RealRegister::r12;
_properties._allocationOrder[p++] = TR::RealRegister::r13;
_properties._allocationOrder[p++] = TR::RealRegister::r14;
_properties._allocationOrder[p++] = TR::RealRegister::r15;
TR_ASSERT(p == machine()->getNumGlobalGPRs(), "assertion failure");
// Linkage FP regs
//
if (OMR::X86::AMD64::Machine::enableNewPickRegister())
{
if (OMR::X86::AMD64::Machine::numRegsWithheld(cg) == 0)
{
_properties._allocationOrder[p++] = TR::RealRegister::xmm0;
_properties._allocationOrder[p++] = TR::RealRegister::xmm1;
}
else
TR_ASSERT(OMR::X86::AMD64::Machine::numRegsWithheld(cg) == 2, "numRegsWithheld: only 0 and 2 currently supported");
}
_properties._allocationOrder[p++] = TR::RealRegister::xmm2;
_properties._allocationOrder[p++] = TR::RealRegister::xmm3;
_properties._allocationOrder[p++] = TR::RealRegister::xmm4;
_properties._allocationOrder[p++] = TR::RealRegister::xmm5;
// Other volatile FP regs
//
_properties._allocationOrder[p++] = TR::RealRegister::xmm6;
_properties._allocationOrder[p++] = TR::RealRegister::xmm7;
_properties._allocationOrder[p++] = TR::RealRegister::xmm8;
_properties._allocationOrder[p++] = TR::RealRegister::xmm9;
_properties._allocationOrder[p++] = TR::RealRegister::xmm10;
_properties._allocationOrder[p++] = TR::RealRegister::xmm11;
_properties._allocationOrder[p++] = TR::RealRegister::xmm12;
_properties._allocationOrder[p++] = TR::RealRegister::xmm13;
_properties._allocationOrder[p++] = TR::RealRegister::xmm14;
_properties._allocationOrder[p++] = TR::RealRegister::xmm15;
_properties._OutgoingArgAlignment = AMD64_DEFAULT_STACK_ALIGNMENT;
TR_ASSERT(p == (machine()->getNumGlobalGPRs() + machine()->_numGlobalFPRs), "assertion failure");
}
// Build arguments for system linkage dispatch.
//
int32_t TR::AMD64SystemLinkage::buildArgs(
TR::Node *callNode,
TR::RegisterDependencyConditions *deps)
{
TR::SymbolReference *methodSymRef = callNode->getSymbolReference();
TR::MethodSymbol *methodSymbol = methodSymRef->getSymbol()->castToMethodSymbol();
TR::RealRegister::RegNum noReg = TR::RealRegister::NoReg;
TR::RealRegister *espReal = machine()->getRealRegister(TR::RealRegister::esp);
int32_t firstNodeArgument = callNode->getFirstArgumentIndex();
int32_t lastNodeArgument = callNode->getNumChildren() - 1;
int32_t offset = 0;
int32_t sizeOfOutGoingArgs= 0;
uint16_t numIntArgs = 0,
numFloatArgs = 0;
int32_t first, last, direction;
int32_t numCopiedRegs = 0;
TR::Register *copiedRegs[TR::X86LinkageProperties::MaxArgumentRegisters];
if (getProperties().passArgsRightToLeft())
{
first = lastNodeArgument;
last = firstNodeArgument - 1;
direction = -1;
}
else
{
first = firstNodeArgument;
last = lastNodeArgument + 1;
direction = 1;
}
// If the dispatch is indirect we must add the VFT register to the preconditions
// so that it gets register assigned with the other preconditions to the call.
//
if (callNode->getOpCode().isIndirect())
{
TR::Node *vftChild = callNode->getFirstChild();
TR_ASSERT(vftChild->getRegister(), "expecting VFT child to be evaluated");
TR::RealRegister::RegNum scratchRegIndex = getProperties().getIntegerScratchRegister(1);
deps->addPreCondition(vftChild->getRegister(), scratchRegIndex, cg());
}
int32_t i;
for (i = first; i != last; i += direction)
{
TR::parmLayoutResult layoutResult;
TR::RealRegister::RegNum rregIndex = noReg;
TR::Node *child = callNode->getChild(i);
layoutParm(child, sizeOfOutGoingArgs, numIntArgs, numFloatArgs, layoutResult);
if (layoutResult.abstract & TR::parmLayoutResult::IN_LINKAGE_REG_PAIR)
{
// TODO: AMD64 SysV ABI might put a struct into a pair of linkage registerr
TR_ASSERT(false, "haven't support linkage_reg_pair yet.\n");
}
else if (layoutResult.abstract & TR::parmLayoutResult::IN_LINKAGE_REG)
{
TR_RegisterKinds regKind = layoutResult.regs[0].regKind;
uint32_t regIndex = layoutResult.regs[0].regIndex;
TR_ASSERT(regKind == TR_GPR || regKind == TR_FPR, "linkage registers includes TR_GPR and TR_FPR\n");
rregIndex = (regKind == TR_FPR) ? getProperties().getFloatArgumentRegister(regIndex): getProperties().getIntegerArgumentRegister(regIndex);
}
else
{
offset = layoutResult.offset;
}
TR::Register *vreg;
vreg = cg()->evaluate(child);
bool needsStackOffsetUpdate = false;
if (rregIndex != noReg)
{
// For NULL JNI reference parameters, it is possible that the NULL value will be evaluated into
// a different register than the child. In that case it is not necessary to copy the temporary scratch
// register across the call.
//
if ((child->getReferenceCount() > 1) &&
(vreg == child->getRegister()))
{
TR::Register *argReg = cg()->allocateRegister();
if (vreg->containsCollectedReference())
argReg->setContainsCollectedReference();
generateRegRegInstruction(TR::Linkage::movOpcodes(RegReg, movType(child->getDataType())), child, argReg, vreg, cg());
vreg = argReg;
copiedRegs[numCopiedRegs++] = vreg;
}
deps->addPreCondition(vreg, rregIndex, cg());
}
else
{
// Ideally, we would like to push rather than move
generateMemRegInstruction(TR::Linkage::movOpcodes(MemReg, fullRegisterMovType(vreg)),
child,
generateX86MemoryReference(espReal, offset, cg()),
vreg,
cg());
}
cg()->decReferenceCount(child);
}
// Now that we're finished making the preconditions, all the interferences
// are established and we can kill these regs.
//
for (i = 0; i < numCopiedRegs; i++)
cg()->stopUsingRegister(copiedRegs[i]);
deps->stopAddingPreConditions();
return sizeOfOutGoingArgs;
}
TR::Register *
TR::AMD64SystemLinkage::buildVolatileAndReturnDependencies(
TR::Node *callNode,
TR::RegisterDependencyConditions *deps)
{
if (callNode->getOpCode().isIndirect())
{
TR::Node *vftChild = callNode->getFirstChild();
if (vftChild->getRegister() && (vftChild->getReferenceCount() > 1))
{
}
else
{
// VFT child dies here; decrement it early so it doesn't interfere with dummy regs.
cg()->recursivelyDecReferenceCount(vftChild);
}
}
TR_ASSERT(deps != NULL, "expected register dependencies");
// Figure out which is the return register.
//
TR::RealRegister::RegNum returnRegIndex;
TR_RegisterKinds returnKind;
switch (callNode->getDataType())
{
case TR::NoType:
returnRegIndex = TR::RealRegister::NoReg;
returnKind = TR_NoRegister;
break;
case TR::Int8:
case TR::Int16:
case TR::Int32:
case TR::Int64:
case TR::Address:
returnRegIndex = getProperties().getIntegerReturnRegister();
returnKind = TR_GPR;
break;
case TR::Float:
case TR::Double:
returnRegIndex = getProperties().getFloatReturnRegister();
returnKind = TR_FPR;
break;
case TR::Aggregate:
default:
TR_ASSERT(false, "Unrecognized call node data type: #%d", (int)callNode->getDataType());
break;
}
// Kill all non-preserved int and float regs besides the return register.
//
int32_t i;
TR::RealRegister::RegNum scratchIndex = getProperties().getIntegerScratchRegister(1);
for (i=0; i<getProperties().getNumVolatileRegisters(); i++)
{
TR::RealRegister::RegNum regIndex = getProperties()._volatileRegisters[i];
if (regIndex != returnRegIndex)
{
TR_RegisterKinds rk = (i < getProperties()._numberOfVolatileGPRegisters) ? TR_GPR : TR_FPR;
TR::Register *dummy = cg()->allocateRegister(rk);
deps->addPostCondition(dummy, regIndex, cg());
// Note that we don't setPlaceholderReg here. If this volatile reg is also volatile
// in the caller's linkage, then that flag doesn't matter much anyway. If it's preserved
// in the caller's linkage, then we don't want to set that flag because we want this
// use of the register to count as a "real" use, thereby motivating the prologue to
// preserve the register.
// A scratch register is necessary to call the native without a trampoline.
//
if (callNode->getOpCode().isIndirect() || (regIndex != scratchIndex))
cg()->stopUsingRegister(dummy);
}
}
#if defined (PYTHON) && 0
// Evict the preserved registers across the call
//
for (i=0; i<getProperties().getNumberOfPreservedGPRegisters(); i++)
{
TR::RealRegister::RegNum regIndex = getProperties()._preservedRegisters[i];
TR::Register *dummy = cg()->allocateRegister(TR_GPR);
deps->addPostCondition(dummy, regIndex, cg());
// Note that we don't setPlaceholderReg here. If this volatile reg is also volatile
// in the caller's linkage, then that flag doesn't matter much anyway. If it's preserved
// in the caller's linkage, then we don't want to set that flag because we want this
// use of the register to count as a "real" use, thereby motivating the prologue to
// preserve the register.
// A scratch register is necessary to call the native without a trampoline.
//
if (callNode->getOpCode().isIndirect() || (regIndex != scratchIndex))
cg()->stopUsingRegister(dummy);
}
#endif
if (callNode->getOpCode().isIndirect())
{
TR::Node *vftChild = callNode->getFirstChild();
if (vftChild->getRegister() && (vftChild->getReferenceCount() > 1))
{
// VFT child survives the call, so we must include it in the postconditions.
deps->addPostCondition(vftChild->getRegister(), TR::RealRegister::NoReg, cg());
cg()->recursivelyDecReferenceCount(vftChild);
}
}
// Now that everything is dead, we can allocate the return register without
// interference
//
TR::Register *returnRegister;
if (returnRegIndex)
{
TR_ASSERT(returnKind != TR_NoRegister, "assertion failure");
if (callNode->getDataType() == TR::Address)
returnRegister = cg()->allocateCollectedReferenceRegister();
else
{
returnRegister = cg()->allocateRegister(returnKind);
if (callNode->getDataType() == TR::Float)
returnRegister->setIsSinglePrecision();
}
deps->addPostCondition(returnRegister, returnRegIndex, cg());
}
else
returnRegister = NULL;
// The reg dependency is left open intentionally, and need to be closed by
// the caller. The reason is because, child class might call this method, while
// adding more register dependecies; if we close the reg dependency here,
// the child class won't be able to add more register dependencies.
return returnRegister;
}
void
OMR::Symbol::setReinstatedReceiver()
{
TR_ASSERT(isParm(), "assertion failure");
_flags.set(ReinstatedReceiver);
}
void
OMR::Symbol::setPinningArrayPointer()
{
TR_ASSERT(self()->isAuto(), "assertion failure");
_flags.set(PinningArrayPointer);
}
void
OMR::Symbol::setConstString()
{
TR_ASSERT(self()->isStatic(), "assertion failure");
_flags.set(ConstString);
}
void
OMR::Symbol::setAutoAddressTaken()
{
TR_ASSERT(self()->isAuto(), "assertion failure");
_flags.set(AutoAddressTaken);
}
void
OMR::Symbol::setCompiledMethod()
{
TR_ASSERT(self()->isStatic(), "assertion failure");
_flags.set(CompiledMethod);
}
void
OMR::Symbol::setAutoMarkerSymbol()
{
TR_ASSERT(self()->isAuto(), "assertion failure");
_flags.set(AutoMarkerSymbol);
}
void
OMR::Symbol::setCountForRecompile()
{
TR_ASSERT(self()->isStatic(), "assertion failure");
_flags.set(CountForRecompile);
}
void
OMR::Symbol::setVariableSizeSymbol()
{
TR_ASSERT(self()->isAuto(), "assertion failure");
_flags.set(VariableSizeSymbol);
}
void
OMR::Symbol::setGCRPatchPoint()
{
TR_ASSERT(self()->isStatic(), "assertion failure");
_flags.set(GCRPatchPoint);
}
void
OMR::Symbol::setThisTempForObjectCtor()
{
TR_ASSERT(self()->isAuto(), "assertion failure");
_flags.set(ThisTempForObjectCtor);
}
void
OMR::Symbol::setGlobalFragmentShadowSymbol()
{
TR_ASSERT(self()->isShadow(), "assertion failure");
_flags.set(GlobalFragmentShadow);
}
void
OMR::Symbol::setParmHasToBeOnStack()
{
TR_ASSERT(self()->isParm(), "assertion failure");
_flags.set(ParmHasToBeOnStack);
}
void
OMR::Symbol::setPythonNameShadowSymbol()
{
TR_ASSERT(self()->isShadow(), "assertion failure");
_flags.set(PythonName);
}
void
OMR::Symbol::resetReferencedParameter()
{
TR_ASSERT(self()->isParm(), "assertion failure");
_flags.reset(ReferencedParameter);
}
void
OMR::Symbol::setEndInternalControlFlow()
{
TR_ASSERT(self()->isLabel(), "assertion failure"); _flags.set(EndInternalControlFlow);
}
void
TR_Debug::printx(TR::FILE *pOutFile, TR::Snippet *snippet)
{
// TODO:AMD64: Clean up these #ifdefs
if (pOutFile == NULL)
return;
switch (snippet->getKind())
{
#ifdef J9_PROJECT_SPECIFIC
case TR::Snippet::IsCall:
print(pOutFile, (TR::X86CallSnippet *)snippet);
break;
case TR::Snippet::IsIPicData:
case TR::Snippet::IsVPicData:
print(pOutFile, (TR::X86PicDataSnippet *)snippet);
break;
case TR::Snippet::IsUnresolvedVirtualCall:
print(pOutFile, (TR::X86UnresolvedVirtualCallSnippet *)snippet);
break;
case TR::Snippet::IsWriteBarrier:
print(pOutFile, (TR::IA32WriteBarrierSnippet *)snippet);
break;
#ifdef TR_TARGET_64BIT
case TR::Snippet::IsWriteBarrierAMD64:
print(pOutFile, (TR::AMD64WriteBarrierSnippet *)snippet);
break;
#endif
case TR::Snippet::IsJNIPause:
print(pOutFile, (TR::X86JNIPauseSnippet *)snippet);
break;
case TR::Snippet::IsPassJNINull:
print(pOutFile, (TR::X86PassJNINullSnippet *)snippet);
break;
case TR::Snippet::IsCheckFailure:
print(pOutFile, (TR::X86CheckFailureSnippet *)snippet);
break;
case TR::Snippet::IsCheckFailureWithResolve:
print(pOutFile, (TR::X86CheckFailureSnippetWithResolve *)snippet);
break;
case TR::Snippet::IsBoundCheckWithSpineCheck:
print(pOutFile, (TR::X86BoundCheckWithSpineCheckSnippet *)snippet);
break;
case TR::Snippet::IsSpineCheck:
print(pOutFile, (TR::X86SpineCheckSnippet *)snippet);
break;
case TR::Snippet::IsScratchArgHelperCall:
print(pOutFile, (TR::X86ScratchArgHelperCallSnippet *)snippet);
break;
case TR::Snippet::IsForceRecompilation:
print(pOutFile, (TR::X86ForceRecompilationSnippet *)snippet);
break;
case TR::Snippet::IsRecompilation:
print(pOutFile, (TR::X86RecompilationSnippet *)snippet);
break;
#endif
case TR::Snippet::IsConstantData:
print(pOutFile, (TR::IA32ConstantDataSnippet *)snippet);
break;
case TR::Snippet::IsData:
print(pOutFile, (TR::IA32DataSnippet *)snippet);
break;
case TR::Snippet::IsDivideCheck:
print(pOutFile, (TR::X86DivideCheckSnippet *)snippet);
break;
#ifdef J9_PROJECT_SPECIFIC
case TR::Snippet::IsGuardedDevirtual:
print(pOutFile, (TR::X86GuardedDevirtualSnippet *)snippet);
break;
#endif
case TR::Snippet::IsHelperCall:
print(pOutFile, (TR::X86HelperCallSnippet *)snippet);
break;
case TR::Snippet::IsFPConvertToInt:
print(pOutFile, (TR::X86FPConvertToIntSnippet *)snippet);
break;
case TR::Snippet::IsFPConvertToLong:
print(pOutFile, (TR::X86FPConvertToLongSnippet *)snippet);
break;
case TR::Snippet::IsUnresolvedDataIA32:
print(pOutFile, (TR::UnresolvedDataSnippet *)snippet);
break;
#ifdef TR_TARGET_64BIT
case TR::Snippet::IsUnresolvedDataAMD64:
print(pOutFile, (TR::UnresolvedDataSnippet *)snippet);
break;
#endif
case TR::Snippet::IsRestart:
default:
TR_ASSERT(0, "unexpected snippet kind: %d", snippet->getKind());
}
}