[LoopAccesses] Factor out RuntimePointerCheck::needsChecking
Will be used by the new RuntimePointerCheck::print.
This is part of the patchset that converts LoopAccessAnalysis into an
actual analysis pass.
llvm-svn: 229629
diff --git a/llvm/lib/Analysis/LoopAccessAnalysis.cpp b/llvm/lib/Analysis/LoopAccessAnalysis.cpp
index 4ccd135..e9e9be3 100644
--- a/llvm/lib/Analysis/LoopAccessAnalysis.cpp
+++ b/llvm/lib/Analysis/LoopAccessAnalysis.cpp
@@ -93,6 +93,23 @@
AliasSetId.push_back(ASId);
}
+bool LoopAccessInfo::RuntimePointerCheck::needsChecking(unsigned I,
+ unsigned J) const {
+ // No need to check if two readonly pointers intersect.
+ if (!IsWritePtr[I] && !IsWritePtr[J])
+ return false;
+
+ // Only need to check pointers between two different dependency sets.
+ if (DependencySetId[I] == DependencySetId[J])
+ return false;
+
+ // Only need to check pointers in the same alias set.
+ if (AliasSetId[I] != AliasSetId[J])
+ return false;
+
+ return true;
+}
+
namespace {
/// \brief Analyses memory accesses in a loop.
///
@@ -1147,15 +1164,7 @@
Value *MemoryRuntimeCheck = nullptr;
for (unsigned i = 0; i < NumPointers; ++i) {
for (unsigned j = i+1; j < NumPointers; ++j) {
- // No need to check if two readonly pointers intersect.
- if (!PtrRtCheck.IsWritePtr[i] && !PtrRtCheck.IsWritePtr[j])
- continue;
-
- // Only need to check pointers between two different dependency sets.
- if (PtrRtCheck.DependencySetId[i] == PtrRtCheck.DependencySetId[j])
- continue;
- // Only need to check pointers in the same alias set.
- if (PtrRtCheck.AliasSetId[i] != PtrRtCheck.AliasSetId[j])
+ if (!PtrRtCheck.needsChecking(i, j))
continue;
unsigned AS0 = Starts[i]->getType()->getPointerAddressSpace();