本文整理汇总了C++中DSNode::setArrayMarker方法的典型用法代码示例。如果您正苦于以下问题：C++ DSNode::setArrayMarker方法的具体用法？C++ DSNode::setArrayMarker怎么用？C++ DSNode::setArrayMarker使用的例子？那么, 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DSNode的用法示例。
在下文中一共展示了DSNode::setArrayMarker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: visitVAStartNode
void GraphBuilder::visitVAStartNode(DSNode* N) {
assert(N && "Null node as argument");
assert(FB && "No function for this graph?");
Module *M = FB->getParent();
assert(M && "No module for function");
Triple TargetTriple(M->getTargetTriple());
Triple::ArchType Arch = TargetTriple.getArch();
// Fetch the VANode associated with the func containing the call to va_start
DSNodeHandle & VANH = G.getVANodeFor(*FB);
// Make sure this NodeHandle has a node to go with it
if (VANH.isNull()) VANH.mergeWith(createNode());
// Create a dsnode for an array of pointers to the VAInfo for this func
DSNode * VAArray = createNode();
VAArray->setArrayMarker();
VAArray->foldNodeCompletely();
VAArray->setLink(0,VANH);
//VAStart modifies its argument
N->setModifiedMarker();
// For the architectures we support, build dsnodes that match
// how we know va_list is used.
switch (Arch) {
case Triple::x86:
// On x86, we have:
// va_list as a pointer to an array of pointers to the variable arguments
if (N->getSize() < 1)
N->growSize(1);
N->setLink(0, VAArray);
break;
case Triple::x86_64:
// On x86_64, we have va_list as a struct {i32, i32, i8*, i8* }
// The first i8* is where arguments generally go, but the second i8* can
// be used also to pass arguments by register.
// We model this by having both the i8*'s point to an array of pointers
// to the arguments.
if (N->getSize() < 24)
N->growSize(24); //sizeof the va_list struct mentioned above
N->setLink(8,VAArray); //first i8*
N->setLink(16,VAArray); //second i8*
break;
default:
// FIXME: For now we abort if we don't know how to handle this arch
// Either add support for other architectures, or at least mark the
// nodes unknown/incomplete or whichever results in the correct
// conservative behavior in the general case
assert(0 && "VAstart not supported on this architecture!");
//XXX: This might be good enough in those cases that we don't know
//what the arch does
N->setIncompleteMarker()->setUnknownMarker()->foldNodeCompletely();
}
// XXX: We used to set the alloca marker for the DSNode passed to va_start.
// Seems to me that you could allocate the va_list on the heap, so ignoring
// for now.
N->setModifiedMarker()->setVAStartMarker();
}