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llvm.memc* improvements. helps PA a lot in some specmarks 

llvm-svn: 27812
This commit is contained in:
Andrew Lenharth 2006-04-18 20:59:52 +00:00
parent 49e188d7f7
commit f70cb84083
1 changed files with 7 additions and 2 deletions
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9
llvm/lib/Analysis/DataStructure/Local.cpp
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@ -561,8 +561,13 @@ void GraphBuilder::visitCallSite(CallSite CS) {
// modified. Preserve second graph // modified. Preserve second graph
DSNodeHandle RetNH = getValueDest(**CS.arg_begin()); DSNodeHandle RetNH = getValueDest(**CS.arg_begin());
DSNodeHandle SrcNH = getValueDest(**(CS.arg_begin()+1)); DSNodeHandle SrcNH = getValueDest(**(CS.arg_begin()+1));
DSNodeHandle Copy( new DSNode(*SrcNH.getNode(), SrcNH.getNode()->getParentGraph()), //copy dsnode
SrcNH.getOffset()); DSNode* copy = new DSNode(*SrcNH.getNode(), SrcNH.getNode()->getParentGraph());
//since this is the target memory, we only are interested in the links.
//the target will not wind up with a global memory object , unless it
//was already there (only pointers to global memory objects)
copy->clearGlobals();
DSNodeHandle Copy( copy, SrcNH.getOffset());
RetNH.mergeWith(Copy); RetNH.mergeWith(Copy);
if (DSNode *N = RetNH.getNode()) if (DSNode *N = RetNH.getNode())
N->setModifiedMarker(); N->setModifiedMarker();