2016-07-19 21:35:11 +08:00
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; RUN: llc < %s -mtriple=arm64-eabi -aarch64-neon-syntax=apple -mcpu=cyclone | FileCheck %s
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2018-01-03 00:30:47 +08:00
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; RUN: llc < %s -mtriple=arm64-eabi -aarch64-neon-syntax=apple -O0 -fast-isel -mcpu=cyclone | FileCheck %s --check-prefix=CHECK-FAST
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2014-05-24 20:50:23 +08:00
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define <16 x i8> @foo(<16 x i8> %a) nounwind optsize readnone ssp {
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; CHECK: uaddlv.16b h0, v0
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; CHECK: rshrn.8b v0, v0, #4
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; CHECK: dup.16b v0, v0[0]
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; CHECK: ret
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; CHECK-FAST: uaddlv.16b
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; CHECK-FAST: rshrn.8b
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; CHECK-FAST: dup.16b
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%tmp = tail call i32 @llvm.aarch64.neon.uaddlv.i32.v16i8(<16 x i8> %a) nounwind
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%tmp1 = trunc i32 %tmp to i16
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%tmp2 = insertelement <8 x i16> undef, i16 %tmp1, i32 0
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%tmp3 = tail call <8 x i8> @llvm.aarch64.neon.rshrn.v8i8(<8 x i16> %tmp2, i32 4)
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%tmp4 = shufflevector <8 x i8> %tmp3, <8 x i8> undef, <16 x i32> zeroinitializer
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ret <16 x i8> %tmp4
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}
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declare <8 x i8> @llvm.aarch64.neon.rshrn.v8i8(<8 x i16>, i32) nounwind readnone
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declare i32 @llvm.aarch64.neon.uaddlv.i32.v16i8(<16 x i8>) nounwind readnone
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