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1# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py2# RUN: llc -O0 -mtriple=amdgcn-mesa-mesa3d -mcpu=gfx900 -run-pass=legalizer %s -o - | FileCheck -check-prefix=GFX9 %s3 4# The G_SHL will be split into <2 x s16>, introducing a5# G_UNMERGE_VALUES of G_CONCAT_VECTORS. The artifact combiner should6# eliminate the pair.7---8name: revisit_concat_vectors_unmerge_user9tracksRegLiveness: true10body: |11 bb.0:12 liveins: $vgpr0_vgpr113 14 ; GFX9-LABEL: name: revisit_concat_vectors_unmerge_user15 ; GFX9: liveins: $vgpr0_vgpr116 ; GFX9-NEXT: {{ $}}17 ; GFX9-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $vgpr018 ; GFX9-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 819 ; GFX9-NEXT: [[LSHR:%[0-9]+]]:_(s32) = G_LSHR [[COPY]], [[C]](s32)20 ; GFX9-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 1621 ; GFX9-NEXT: [[LSHR1:%[0-9]+]]:_(s32) = G_LSHR [[COPY]], [[C1]](s32)22 ; GFX9-NEXT: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 2423 ; GFX9-NEXT: [[LSHR2:%[0-9]+]]:_(s32) = G_LSHR [[COPY]], [[C2]](s32)24 ; GFX9-NEXT: [[TRUNC:%[0-9]+]]:_(s16) = G_TRUNC [[COPY]](s32)25 ; GFX9-NEXT: [[TRUNC1:%[0-9]+]]:_(s16) = G_TRUNC [[LSHR]](s32)26 ; GFX9-NEXT: [[TRUNC2:%[0-9]+]]:_(s16) = G_TRUNC [[LSHR1]](s32)27 ; GFX9-NEXT: [[TRUNC3:%[0-9]+]]:_(s16) = G_TRUNC [[LSHR2]](s32)28 ; GFX9-NEXT: [[C3:%[0-9]+]]:_(s16) = G_CONSTANT i16 229 ; GFX9-NEXT: [[BUILD_VECTOR:%[0-9]+]]:_(<2 x s16>) = G_BUILD_VECTOR [[C3]](s16), [[C3]](s16)30 ; GFX9-NEXT: [[BUILD_VECTOR1:%[0-9]+]]:_(<2 x s16>) = G_BUILD_VECTOR [[C3]](s16), [[C3]](s16)31 ; GFX9-NEXT: [[BUILD_VECTOR2:%[0-9]+]]:_(<2 x s16>) = G_BUILD_VECTOR [[TRUNC]](s16), [[TRUNC1]](s16)32 ; GFX9-NEXT: [[BUILD_VECTOR3:%[0-9]+]]:_(<2 x s16>) = G_BUILD_VECTOR [[TRUNC2]](s16), [[TRUNC3]](s16)33 ; GFX9-NEXT: [[SHL:%[0-9]+]]:_(<2 x s16>) = G_SHL [[BUILD_VECTOR2]], [[BUILD_VECTOR]](<2 x s16>)34 ; GFX9-NEXT: [[SHL1:%[0-9]+]]:_(<2 x s16>) = G_SHL [[BUILD_VECTOR3]], [[BUILD_VECTOR1]](<2 x s16>)35 ; GFX9-NEXT: [[CONCAT_VECTORS:%[0-9]+]]:_(<4 x s16>) = G_CONCAT_VECTORS [[SHL]](<2 x s16>), [[SHL1]](<2 x s16>)36 ; GFX9-NEXT: $vgpr0_vgpr1 = COPY [[CONCAT_VECTORS]](<4 x s16>)37 %0:_(s32) = COPY $vgpr038 %1:_(<4 x s8>) = G_BITCAST %039 %2:_(s16) = G_CONSTANT i16 240 %3:_(<4 x s16>) = G_BUILD_VECTOR %2, %2, %2, %241 %4:_(<4 x s16>) = G_ANYEXT %142 %5:_(<4 x s16>) = G_SHL %4, %343 $vgpr0_vgpr1 = COPY %544...45