本文整理汇总了C++中tr::Register::setPlaceholderReg方法的典型用法代码示例。如果您正苦于以下问题：C++ Register::setPlaceholderReg方法的具体用法？C++ Register::setPlaceholderReg怎么用？C++ Register::setPlaceholderReg使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类tr::Register的用法示例。
在下文中一共展示了Register::setPlaceholderReg方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: createDependencyConditions
TR::RegisterDependencyConditions* TR_PPCScratchRegisterDependencyConditions::createDependencyConditions(TR::CodeGenerator *cg,
TR_PPCScratchRegisterDependencyConditions *pre,
TR_PPCScratchRegisterDependencyConditions *post)
{
int32_t preCount = pre ? pre->getNumberOfDependencies() : 0;
int32_t postCount = post ? post->getNumberOfDependencies() : 0;
TR_LiveRegisters *lrVector = cg->getLiveRegisters(TR_VSX_VECTOR);
bool liveVSXVectorReg = (!lrVector || (lrVector->getNumberOfLiveRegisters() > 0));
TR_LiveRegisters *lrScalar = cg->getLiveRegisters(TR_VSX_SCALAR);
bool liveVSXScalarReg = (!lrScalar || (lrScalar->getNumberOfLiveRegisters() > 0));
if (liveVSXVectorReg)
{
preCount += 64;
postCount += 64;
}
else if (liveVSXScalarReg)
{
preCount += 32;
postCount += 32;
}
TR::RegisterDependencyConditions *dependencies = new (cg->trHeapMemory()) TR::RegisterDependencyConditions(preCount,
postCount,
cg->trMemory());
for (int i = 0; i < (pre ? pre->_numGPRDeps : 0); ++i)
{
dependencies->addPreCondition(pre->_gprDeps[i].getRegister(), pre->_gprDeps[i].getRealRegister(), pre->_gprDeps[i].getFlags());
if (pre->_excludeGPR0 & (1 << i))
dependencies->getPreConditions()->getRegisterDependency(i)->setExcludeGPR0();
}
for (int i = 0; i < (post ? post->_numGPRDeps : 0); ++i)
{
dependencies->addPostCondition(post->_gprDeps[i].getRegister(), post->_gprDeps[i].getRealRegister(), post->_gprDeps[i].getFlags());
if (post->_excludeGPR0 & (1 << i))
dependencies->getPostConditions()->getRegisterDependency(i)->setExcludeGPR0();
}
for (int i = 0; i < (pre ? pre->_numCCRDeps : 0); ++i)
{
dependencies->addPreCondition(pre->_ccrDeps[i].getRegister(), pre->_ccrDeps[i].getRealRegister(), pre->_ccrDeps[i].getFlags());
}
for (int i = 0; i < (post ? post->_numCCRDeps : 0); ++i)
{
dependencies->addPostCondition(post->_ccrDeps[i].getRegister(), post->_ccrDeps[i].getRealRegister(), post->_ccrDeps[i].getFlags());
}
const TR_PPCLinkageProperties& properties = cg->getLinkage()->getProperties();
if (liveVSXVectorReg)
{
for (int32_t i=TR::RealRegister::FirstVSR; i<=TR::RealRegister::LastVSR; i++)
{
if (!properties.getPreserved((TR::RealRegister::RegNum)i))
{
TR::Register *vreg = cg->allocateRegister(TR_FPR);
vreg->setPlaceholderReg();
dependencies->addPreCondition(vreg, (TR::RealRegister::RegNum)i);
dependencies->addPostCondition(vreg, (TR::RealRegister::RegNum)i);
}
}
}
else
{
if (liveVSXScalarReg)
{
for (int32_t i=TR::RealRegister::vsr32; i<=TR::RealRegister::LastVSR; i++)
{
if (!properties.getPreserved((TR::RealRegister::RegNum)i))
{
TR::Register *vreg = cg->allocateRegister(TR_FPR);
vreg->setPlaceholderReg();
dependencies->addPreCondition(vreg, (TR::RealRegister::RegNum)i);
dependencies->addPostCondition(vreg, (TR::RealRegister::RegNum)i);
}
}
}
}
return dependencies;
}