1 ; RUN: llc -O0 -march=arm64 -aarch64-neon-syntax=apple -verify-machineinstrs < %s | FileCheck %s 2 3 ; The following 2 test cases test shufflevector with beginning UNDEF mask. 4 define <8 x i16> @test_vext_undef_traverse(<8 x i16> %in) { 5 ;CHECK-LABEL: test_vext_undef_traverse: 6 ;CHECK: {{ext.16b.*v0, #4}} 7 %vext = shufflevector <8 x i16> <i16 undef, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef, i16 0, i16 0>, <8 x i16> %in, <8 x i32> <i32 undef, i32 undef, i32 undef, i32 undef, i32 6, i32 7, i32 8, i32 9> 8 ret <8 x i16> %vext 9 } 10 11 define <8 x i16> @test_vext_undef_traverse2(<8 x i16> %in) { 12 ;CHECK-LABEL: test_vext_undef_traverse2: 13 ;CHECK: {{ext.16b.*v0, #6}} 14 %vext = shufflevector <8 x i16> %in, <8 x i16> <i16 undef, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef>, <8 x i32> <i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 0, i32 1, i32 2> 15 ret <8 x i16> %vext 16 } 17 18 define <8 x i8> @test_vext_undef_traverse3(<8 x i8> %in) { 19 ;CHECK-LABEL: test_vext_undef_traverse3: 20 ;CHECK: {{ext.8b.*v0, #6}} 21 %vext = shufflevector <8 x i8> %in, <8 x i8> <i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef>, <8 x i32> <i32 undef, i32 undef, i32 undef, i32 undef, i32 2, i32 3, i32 4, i32 5> 22 ret <8 x i8> %vext 23 } 24
