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-rw-r--r--llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp6
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
index b5e206474e0..15069e62a73 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
@@ -192,11 +192,17 @@ Instruction *InstCombiner::SimplifyMemTransfer(MemIntrinsic *MI) {
L->setAlignment(SrcAlign);
if (CopyMD)
L->setMetadata(LLVMContext::MD_tbaa, CopyMD);
+ MDNode *LoopMemParallelMD =
+ MI->getMetadata(LLVMContext::MD_mem_parallel_loop_access);
+ if (LoopMemParallelMD)
+ L->setMetadata(LLVMContext::MD_mem_parallel_loop_access, LoopMemParallelMD);
StoreInst *S = Builder->CreateStore(L, Dest, MI->isVolatile());
S->setAlignment(DstAlign);
if (CopyMD)
S->setMetadata(LLVMContext::MD_tbaa, CopyMD);
+ if (LoopMemParallelMD)
+ S->setMetadata(LLVMContext::MD_mem_parallel_loop_access, LoopMemParallelMD);
// Set the size of the copy to 0, it will be deleted on the next iteration.
MI->setArgOperand(2, Constant::getNullValue(MemOpLength->getType()));
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