Fix change in behaviour accidentally introduced in r201754.

llvm-svn: 201758

1 files changed, 4 insertions, 2 deletions

diff --git a/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp b/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp
index 376b6f22083..88cc313e76c 100644
--- a/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp
+++ b/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp
@@ -152,8 +152,10 @@ static void getUnderlyingObjectsForInstr(const MachineInstr *MI,
     // For now, ignore PseudoSourceValues which may alias LLVM IR values
     // because the code that uses this function has no way to cope with
     // such aliases.
-    if (!PSV->isAliased(MFI))
-      Objects.push_back(UnderlyingObjectsVector::value_type(V, false));
+    if (!PSV->isAliased(MFI)) {
+      bool MayAlias = PSV->mayAlias(MFI);
+      Objects.push_back(UnderlyingObjectsVector::value_type(V, MayAlias));
+    }
     return;
   }