use the new isNoAlias method to simplify some code, only do an escaping check if
we have a non-constant pointer. Constant pointers can't be local.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89665 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/AliasAnalysis.cpp b/lib/Analysis/AliasAnalysis.cpp
index 92fa1df..dee9b53 100644
--- a/lib/Analysis/AliasAnalysis.cpp
+++ b/lib/Analysis/AliasAnalysis.cpp
@@ -127,17 +127,18 @@
AliasAnalysis::ModRefResult
AliasAnalysis::getModRefInfo(CallSite CS, Value *P, unsigned Size) {
- ModRefResult Mask = ModRef;
ModRefBehavior MRB = getModRefBehavior(CS);
if (MRB == DoesNotAccessMemory)
return NoModRef;
- else if (MRB == OnlyReadsMemory)
+
+ ModRefResult Mask = ModRef;
+ if (MRB == OnlyReadsMemory)
Mask = Ref;
else if (MRB == AliasAnalysis::AccessesArguments) {
bool doesAlias = false;
for (CallSite::arg_iterator AI = CS.arg_begin(), AE = CS.arg_end();
AI != AE; ++AI)
- if (alias(*AI, ~0U, P, Size) != NoAlias) {
+ if (!isNoAlias(*AI, ~0U, P, Size)) {
doesAlias = true;
break;
}