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Combine NEON VABD (absolute difference) intrinsics with ADDs to make VABA

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(absolute difference with accumulate) intrinsics.  Radar 8228576.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110170 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bob Wilson
2010-08-04 00:12:08 +00:00
parent 8a7ffe651f
commit 67b453b0d1
2 changed files with 40 additions and 0 deletions
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24
test/CodeGen/ARM/vaba.ll
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@@ -203,3 +203,27 @@ declare <2 x i64> @llvm.arm.neon.vabals.v2i64(<2 x i64>, <2 x i32>, <2 x i32>) n
declare <8 x i16> @llvm.arm.neon.vabalu.v8i16(<8 x i16>, <8 x i8>, <8 x i8>) nounwind readnone
declare <4 x i32> @llvm.arm.neon.vabalu.v4i32(<4 x i32>, <4 x i16>, <4 x i16>) nounwind readnone
declare <2 x i64> @llvm.arm.neon.vabalu.v2i64(<2 x i64>, <2 x i32>, <2 x i32>) nounwind readnone
define <8 x i8> @vabd_combine_s8(<8 x i8>* %A, <8 x i8>* %B) nounwind {
;CHECK: vabd_combine_s8:
;CHECK: vaba.s8
%tmp1 = load <8 x i8>* %A
%tmp2 = load <8 x i8>* %B
%tmp3 = call <8 x i8> @llvm.arm.neon.vabds.v8i8(<8 x i8> %tmp1, <8 x i8> %tmp2)
%tmp4 = add <8 x i8> %tmp2, %tmp3
ret <8 x i8> %tmp4
}
define <4 x i16> @vabd_combine_u16(<4 x i16>* %A, <4 x i16>* %B) nounwind {
;CHECK: vabd_combine_u16:
;CHECK: vaba.u16
%tmp1 = load <4 x i16>* %A
%tmp2 = load <4 x i16>* %B
%tmp3 = call <4 x i16> @llvm.arm.neon.vabdu.v4i16(<4 x i16> %tmp1, <4 x i16> %tmp2)
%tmp4 = add <4 x i16> %tmp3, %tmp1
ret <4 x i16> %tmp4
}
declare <8 x i8> @llvm.arm.neon.vabds.v8i8(<8 x i8>, <8 x i8>) nounwind readnone
declare <4 x i16> @llvm.arm.neon.vabdu.v4i16(<4 x i16>, <4 x i16>) nounwind readnone