Optionally allow comparison operations from affect DSGraphs
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31511 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/DataStructure/Local.cpp b/lib/Analysis/DataStructure/Local.cpp
index 2542fd0..856ceb3 100644
--- a/lib/Analysis/DataStructure/Local.cpp
+++ b/lib/Analysis/DataStructure/Local.cpp
@@ -40,6 +40,10 @@
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::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)));
}