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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=aarch64-- -O0 -run-pass=instruction-select -verify-machineinstrs %s -global-isel-abort=1 -o - | FileCheck %s
# This test checks that a shuffle mask with an undef value, instead of a constant,
# doesn't crash. The code generated definitely isn't optimal.
...
---
name: shuffle_undef_mask_elt
alignment: 4
legalized: true
regBankSelected: true
tracksRegLiveness: true
machineFunctionInfo: {}
body: |
bb.1:
liveins: $d0
; CHECK-LABEL: name: shuffle_undef_mask_elt
; CHECK: liveins: $d0
; CHECK: [[COPY:%[0-9]+]]:fpr64 = COPY $d0
; CHECK: [[DEF:%[0-9]+]]:gpr32 = IMPLICIT_DEF
; CHECK: [[DEF1:%[0-9]+]]:fpr128 = IMPLICIT_DEF
; CHECK: [[INSERT_SUBREG:%[0-9]+]]:fpr128 = INSERT_SUBREG [[DEF1]], [[DEF]], %subreg.ssub
; CHECK: [[COPY1:%[0-9]+]]:fpr64 = COPY [[INSERT_SUBREG]].dsub
; CHECK: [[ADRP:%[0-9]+]]:gpr64common = ADRP target-flags(aarch64-page) %const.0
; CHECK: [[LDRDui:%[0-9]+]]:fpr64 = LDRDui [[ADRP]], target-flags(aarch64-pageoff, aarch64-nc) %const.0
; CHECK: [[DEF2:%[0-9]+]]:fpr128 = IMPLICIT_DEF
; CHECK: [[INSERT_SUBREG1:%[0-9]+]]:fpr128 = INSERT_SUBREG [[DEF2]], [[COPY]], %subreg.dsub
; CHECK: [[DEF3:%[0-9]+]]:fpr128 = IMPLICIT_DEF
; CHECK: [[INSERT_SUBREG2:%[0-9]+]]:fpr128 = INSERT_SUBREG [[DEF3]], [[COPY1]], %subreg.dsub
; CHECK: [[INSvi64lane:%[0-9]+]]:fpr128 = INSvi64lane [[INSERT_SUBREG1]], 1, [[INSERT_SUBREG2]], 0
; CHECK: [[DEF4:%[0-9]+]]:fpr128 = IMPLICIT_DEF
; CHECK: [[INSERT_SUBREG3:%[0-9]+]]:fpr128 = INSERT_SUBREG [[DEF4]], [[LDRDui]], %subreg.dsub
; CHECK: [[TBLv16i8One:%[0-9]+]]:fpr128 = TBLv16i8One [[INSvi64lane]], [[INSERT_SUBREG3]]
; CHECK: [[COPY2:%[0-9]+]]:fpr64 = COPY [[TBLv16i8One]].dsub
; CHECK: $d0 = COPY [[COPY2]]
; CHECK: RET_ReallyLR implicit $d0
%0:fpr(<2 x s32>) = COPY $d0
%6:gpr(s32) = G_IMPLICIT_DEF
%7:gpr(s32) = G_IMPLICIT_DEF
%2:fpr(<2 x s32>) = G_BUILD_VECTOR %6(s32), %7(s32)
%1:fpr(<2 x s32>) = G_SHUFFLE_VECTOR %0(<2 x s32>), %2, shufflemask(1, undef)
$d0 = COPY %1(<2 x s32>)
RET_ReallyLR implicit $d0
...
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