[LAA] LLE 5/6: Add predicate functions Dependence::isForward/isBackward, NFC

[oota-llvm.git] / lib / Analysis / LoopAccessAnalysis.cpp

diff --git a/lib/Analysis/LoopAccessAnalysis.cpp b/lib/Analysis/LoopAccessAnalysis.cpp
index fd85a908ffb45a59373af355eda4fd0e2a34177a..58a7d08860ba886645157725231e4173d9fab0c8 100644 (file)
--- a/lib/Analysis/LoopAccessAnalysis.cpp
+++ b/lib/Analysis/LoopAccessAnalysis.cpp
@@ -910,14 +910,14 @@ bool MemoryDepChecker::Dependence::isSafeForVectorization(DepType Type) {
   llvm_unreachable("unexpected DepType!");
 }
 
-bool MemoryDepChecker::Dependence::isPossiblyBackward() const {
+bool MemoryDepChecker::Dependence::isBackward() const {
   switch (Type) {
   case NoDep:
   case Forward:
   case ForwardButPreventsForwarding:
+  case Unknown:
     return false;
 
-  case Unknown:
   case BackwardVectorizable:
   case Backward:
   case BackwardVectorizableButPreventsForwarding:
@@ -926,6 +926,26 @@ bool MemoryDepChecker::Dependence::isPossiblyBackward() const {
   llvm_unreachable("unexpected DepType!");
 }
 
+bool MemoryDepChecker::Dependence::isPossiblyBackward() const {
+  return isBackward() || Type == Unknown;
+}
+
+bool MemoryDepChecker::Dependence::isForward() const {
+  switch (Type) {
+  case Forward:
+  case ForwardButPreventsForwarding:
+    return true;
+
+  case NoDep:
+  case Unknown:
+  case BackwardVectorizable:
+  case Backward:
+  case BackwardVectorizableButPreventsForwarding:
+    return false;
+  }
+  llvm_unreachable("unexpected DepType!");
+}
+
 bool MemoryDepChecker::couldPreventStoreLoadForward(unsigned Distance,
                                                     unsigned TypeByteSize) {
   // If loads occur at a distance that is not a multiple of a feasible vector