AArch64: add initial NEON support

Patch by Ana Pazos.

- Completed implementation of instruction formats:
AdvSIMD three same
AdvSIMD modified immediate
AdvSIMD scalar pairwise

- Completed implementation of instruction classes
(some of the instructions in these classes
belong to yet unfinished instruction formats):
Vector Arithmetic
Vector Immediate
Vector Pairwise Arithmetic

- Initial implementation of instruction formats:
AdvSIMD scalar two-reg misc
AdvSIMD scalar three same

- Intial implementation of instruction class:
Scalar Arithmetic

- Initial clang changes to support arm v8 intrinsics.
Note: no clang changes for scalar intrinsics function name mangling yet.

- Comprehensive test cases for added instructions
To verify auto codegen, encoding, decoding, diagnosis, intrinsics.

llvm-svn: 187567

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/lib/Target/AArch64/AArch64RegisterInfo.td b/llvm/lib/Target/AArch64/AArch64RegisterInfo.td
index cc2bb6135cc..b3a81b1dc0a 100644
--- a/llvm/lib/Target/AArch64/AArch64RegisterInfo.td
+++ b/llvm/lib/Target/AArch64/AArch64RegisterInfo.td
@@ -185,7 +185,7 @@ foreach Index = 0-31 in {
 // These two classes contain the same registers, which should be reasonably
 // sensible for MC and allocation purposes, but allows them to be treated
 // separately for things like stack spilling.
-def VPR64 : RegisterClass<"AArch64", [v2f32, v2i32, v4i16, v8i8], 64,
+def VPR64 : RegisterClass<"AArch64", [v2f32, v2i32, v4i16, v8i8, v1i64], 64,
                           (sequence "V%u", 0, 31)>;
 
 def VPR128 : RegisterClass<"AArch64",