[PATCH] D32401: [Devirtualization] insert placement new barrier with -O0

[Piotr Padlewski via Phabricator via cfe-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rL303488: [Devirtualization] insert placement new barrier with -O0 (authored by Prazek).

Changed prior to commit:
  https://reviews.llvm.org/D32401?vs=96313&id=99667#toc

Repository:
  rL LLVM

https://reviews.llvm.org/D32401

Files:
  cfe/trunk/lib/CodeGen/CGExprCXX.cpp


Index: cfe/trunk/lib/CodeGen/CGExprCXX.cpp
===================================================================
--- cfe/trunk/lib/CodeGen/CGExprCXX.cpp
+++ cfe/trunk/lib/CodeGen/CGExprCXX.cpp
@@ -1658,8 +1658,9 @@
 
   // Passing pointer through invariant.group.barrier to avoid propagation of
   // vptrs information which may be included in previous type.
+  // To not break LTO with different optimizations levels, we do it regardless
+  // of optimization level.
   if (CGM.getCodeGenOpts().StrictVTablePointers &&
-      CGM.getCodeGenOpts().OptimizationLevel > 0 &&
       allocator->isReservedGlobalPlacementOperator())
     result = Address(Builder.CreateInvariantGroupBarrier(result.getPointer()),
                      result.getAlignment());


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