1# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
2# RUN: llc -march=amdgcn -mcpu=gfx900 -verify-machineinstrs -run-pass=regallocfast -o - %s | FileCheck %s
3
4# This would hit "Illegal subregister index for physical register" verifier error since
5# tied operands would skip dropping the subregister index.
6
7---
8name:   invalid_subreg_index
9tracksRegLiveness: true
10machineFunctionInfo:
11  isEntryFunction: true
12body:             |
13  bb.0:
14    liveins: $vgpr0, $sgpr0
15
16    ; CHECK-LABEL: name: invalid_subreg_index
17    ; CHECK: liveins: $vgpr0, $sgpr0
18    ; CHECK-NEXT: {{  $}}
19    ; CHECK-NEXT: $m0 = COPY renamable $sgpr0
20    ; CHECK-NEXT: undef renamable $vgpr1 = V_INTERP_P2_F32 undef $vgpr1, undef $vgpr0, 0, 1, implicit $mode, implicit $m0, implicit $exec, implicit-def dead $vgpr0_vgpr1
21    ; CHECK-NEXT: S_ENDPGM 0, implicit killed renamable $sgpr0
22    %0:vgpr_32 = COPY $vgpr0
23    %1:sgpr_32 = COPY $sgpr0
24    $m0 = COPY %1
25    undef %2.sub1:vreg_64 = V_INTERP_P2_F32 undef %2.sub1, undef %0:vgpr_32, 0, 1, implicit $mode, implicit $m0, implicit $exec
26    S_ENDPGM 0, implicit %1
27
28...
29