[AArch64] Add support for NEON scalar absolute value instruction.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@192844 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGBuiltin.cpp b/lib/CodeGen/CGBuiltin.cpp
index f905595..74ff2dd 100644
--- a/lib/CodeGen/CGBuiltin.cpp
+++ b/lib/CodeGen/CGBuiltin.cpp
@@ -2074,6 +2074,10 @@
   case AArch64::BI__builtin_neon_vtstd_u64:
     Int = Intrinsic::aarch64_neon_vtstd; s = "vtst";
     OverloadInt = false; break;
+  // Scalar Absolute Value
+  case AArch64::BI__builtin_neon_vabsd_s64:
+    Int = Intrinsic::aarch64_neon_vabs;
+    s = "vabs"; OverloadInt = false; break;
   // Scalar Signed Saturating Absolute Value
   case AArch64::BI__builtin_neon_vqabsb_s8:
   case AArch64::BI__builtin_neon_vqabsh_s16: