Update LLVM for rebase to r212749.

Includes a cherry-pick of:
r212948 - fixes a small issue with atomic calls

Change-Id: Ib97bd980b59f18142a69506400911a6009d9df18

1 files changed, 4 insertions, 1 deletions

diff --git a/include/llvm/CodeGen/MachineInstr.h b/include/llvm/CodeGen/MachineInstr.h
index b0d3e02..3c82811 100644
--- a/include/llvm/CodeGen/MachineInstr.h
+++ b/include/llvm/CodeGen/MachineInstr.h
@@ -727,6 +727,9 @@ public:
   bool isFullCopy() const {
     return isCopy() && !getOperand(0).getSubReg() && !getOperand(1).getSubReg();
   }
+  bool isExtractSubreg() const {
+    return getOpcode() == TargetOpcode::EXTRACT_SUBREG;
+  }
 
   /// isCopyLike - Return true if the instruction behaves like a copy.
   /// This does not include native copy instructions.
@@ -947,7 +950,7 @@ public:
   }
 
   /// isRegTiedToDefOperand - Return true if the use operand of the specified
-  /// index is tied to an def operand. It also returns the def operand index by
+  /// index is tied to a def operand. It also returns the def operand index by
   /// reference if DefOpIdx is not null.
   bool isRegTiedToDefOperand(unsigned UseOpIdx,
                              unsigned *DefOpIdx = nullptr) const {