ARM64: Support MultiplyAccumulate for SIMD.

Test: test-art-host, test-art-target.

Change-Id: I06af8415e15352d09d176cae828163cbe99ae7a7
diff --git a/compiler/optimizing/instruction_simplifier_shared.h b/compiler/optimizing/instruction_simplifier_shared.h
index 83e3ffc..2ea103a 100644
--- a/compiler/optimizing/instruction_simplifier_shared.h
+++ b/compiler/optimizing/instruction_simplifier_shared.h
@@ -58,6 +58,8 @@
                                   HInstruction* index,
                                   size_t data_offset);
 
+bool TryCombineVecMultiplyAccumulate(HVecMul* mul, InstructionSet isa);
+
 }  // namespace art
 
 #endif  // ART_COMPILER_OPTIMIZING_INSTRUCTION_SIMPLIFIER_SHARED_H_