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Optionally allow comparison operations from affect DSGraphs 

llvm-svn: 31511
This commit is contained in:
Andrew Lenharth 2006-11-07 20:39:05 +00:00
parent 1ee904e503
commit 30b254e48b
1 changed files with 6 additions and 1 deletions
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7
llvm/lib/Analysis/DataStructure/Local.cpp
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@ -40,6 +40,10 @@ static cl::opt<bool>
TrackIntegersAsPointers("dsa-track-integers", cl::Hidden,
cl::desc("If this is set, track integers as potential pointers"));
static cl::opt<bool>
IgnoreSetCC("dsa-ignore-setcc", cl::Hidden,
cl::desc("If this is set, do nothing at pointer comparisons"));
static cl::list<std::string>
AllocList("dsa-alloc-list",
cl::value_desc("list"),
@ -336,7 +340,8 @@ void GraphBuilder::visitSelectInst(SelectInst &SI) {
void GraphBuilder::visitSetCondInst(SetCondInst &SCI) {
if (!isPointerType(SCI.getOperand(0)->getType()) ||
isa<ConstantPointerNull>(SCI.getOperand(1))) return; // Only pointers
ScalarMap[SCI.getOperand(0)].mergeWith(getValueDest(*SCI.getOperand(1)));
if(!IgnoreSetCC)
ScalarMap[SCI.getOperand(0)].mergeWith(getValueDest(*SCI.getOperand(1)));
}