ARM64: initial backend import

This adds a second implementation of the AArch64 architecture to LLVM,
accessible in parallel via the "arm64" triple. The plan over the
coming weeks & months is to merge the two into a single backend,
during which time thorough code review should naturally occur.

Everything will be easier with the target in-tree though, hence this
commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205090 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 56 insertions, 0 deletions

diff --git a/test/CodeGen/ARM64/vcnt.ll b/test/CodeGen/ARM64/vcnt.ll
new file mode 100644
index 0000000000..e00658a4bd
--- /dev/null
+++ b/test/CodeGen/ARM64/vcnt.ll
@@ -0,0 +1,56 @@
+; RUN: llc < %s -march=arm64 -arm64-neon-syntax=apple | FileCheck %s
+
+define <8 x i8> @cls_8b(<8 x i8>* %A) nounwind {
+;CHECK-LABEL: cls_8b:
+;CHECK: cls.8b
+	%tmp1 = load <8 x i8>* %A
+	%tmp3 = call <8 x i8> @llvm.arm64.neon.cls.v8i8(<8 x i8> %tmp1)
+	ret <8 x i8> %tmp3
+}
+
+define <16 x i8> @cls_16b(<16 x i8>* %A) nounwind {
+;CHECK-LABEL: cls_16b:
+;CHECK: cls.16b
+	%tmp1 = load <16 x i8>* %A
+	%tmp3 = call <16 x i8> @llvm.arm64.neon.cls.v16i8(<16 x i8> %tmp1)
+	ret <16 x i8> %tmp3
+}
+
+define <4 x i16> @cls_4h(<4 x i16>* %A) nounwind {
+;CHECK-LABEL: cls_4h:
+;CHECK: cls.4h
+	%tmp1 = load <4 x i16>* %A
+	%tmp3 = call <4 x i16> @llvm.arm64.neon.cls.v4i16(<4 x i16> %tmp1)
+	ret <4 x i16> %tmp3
+}
+
+define <8 x i16> @cls_8h(<8 x i16>* %A) nounwind {
+;CHECK-LABEL: cls_8h:
+;CHECK: cls.8h
+	%tmp1 = load <8 x i16>* %A
+	%tmp3 = call <8 x i16> @llvm.arm64.neon.cls.v8i16(<8 x i16> %tmp1)
+	ret <8 x i16> %tmp3
+}
+
+define <2 x i32> @cls_2s(<2 x i32>* %A) nounwind {
+;CHECK-LABEL: cls_2s:
+;CHECK: cls.2s
+	%tmp1 = load <2 x i32>* %A
+	%tmp3 = call <2 x i32> @llvm.arm64.neon.cls.v2i32(<2 x i32> %tmp1)
+	ret <2 x i32> %tmp3
+}
+
+define <4 x i32> @cls_4s(<4 x i32>* %A) nounwind {
+;CHECK-LABEL: cls_4s:
+;CHECK: cls.4s
+	%tmp1 = load <4 x i32>* %A
+	%tmp3 = call <4 x i32> @llvm.arm64.neon.cls.v4i32(<4 x i32> %tmp1)
+	ret <4 x i32> %tmp3
+}
+
+declare <8 x i8> @llvm.arm64.neon.cls.v8i8(<8 x i8>) nounwind readnone
+declare <16 x i8> @llvm.arm64.neon.cls.v16i8(<16 x i8>) nounwind readnone
+declare <4 x i16> @llvm.arm64.neon.cls.v4i16(<4 x i16>) nounwind readnone
+declare <8 x i16> @llvm.arm64.neon.cls.v8i16(<8 x i16>) nounwind readnone
+declare <2 x i32> @llvm.arm64.neon.cls.v2i32(<2 x i32>) nounwind readnone
+declare <4 x i32> @llvm.arm64.neon.cls.v4i32(<4 x i32>) nounwind readnone