inariant.group handling in GVN

[oota-llvm.git] / lib / Transforms / Scalar / MemCpyOptimizer.cpp

diff --git a/lib/Transforms/Scalar/MemCpyOptimizer.cpp b/lib/Transforms/Scalar/MemCpyOptimizer.cpp
index 58ee7dffcadd53504e47192ab6072e6f127fe065..4039c6f35346bd4a19f831c95b54c9f8b5416381 100644 (file)
--- a/lib/Transforms/Scalar/MemCpyOptimizer.cpp
+++ b/lib/Transforms/Scalar/MemCpyOptimizer.cpp
@@ -744,11 +744,9 @@ bool MemCpyOpt::performCallSlotOptzn(Instruction *cpy,
   // Update AA metadata
   // FIXME: MD_tbaa_struct and MD_mem_parallel_loop_access should also be
   // handled here, but combineMetadata doesn't support them yet
-  unsigned KnownIDs[] = {
-    LLVMContext::MD_tbaa,
-    LLVMContext::MD_alias_scope,
-    LLVMContext::MD_noalias,
-  };
+  unsigned KnownIDs[] = {LLVMContext::MD_tbaa, LLVMContext::MD_alias_scope,
+                         LLVMContext::MD_noalias,
+                         LLVMContext::MD_invariant_group};
   combineMetadata(C, cpy, KnownIDs);
 
   // Remove the memcpy.