1# RUN: llc -march=amdgcn -mcpu=tonga %s -start-before detect-dead-lanes -stop-before machine-scheduler -verify-machineinstrs -o - | FileCheck -check-prefix=GCN %s
2
3# GCN-LABEL: name: dead_lane
4# GCN:      bb.0:
5# GCN-NEXT: undef %3.sub0:vreg_64 = nofpexcept V_MAC_F32_e32 undef %1:vgpr_32, undef %1:vgpr_32, undef %3.sub0, implicit $mode, implicit $exec
6# GCN-NEXT: FLAT_STORE_DWORD undef %4:vreg_64, %3.sub0,
7---
8name:            dead_lane
9tracksRegLiveness: true
10body:             |
11  bb.0:
12    %1:vgpr_32 = nofpexcept V_MAC_F32_e32 undef %0:vgpr_32, undef %0:vgpr_32, undef %0:vgpr_32, implicit $mode, implicit $exec
13    %2:vgpr_32 = nofpexcept V_MAC_F32_e32 undef %0:vgpr_32, undef %0:vgpr_32, undef %0:vgpr_32, implicit $mode, implicit $exec
14    %3:vreg_64 = REG_SEQUENCE %1:vgpr_32, %subreg.sub0, %2:vgpr_32, %subreg.sub1
15    FLAT_STORE_DWORD undef %4:vreg_64, %3.sub0, 0, 0, 0, 0, implicit $exec, implicit $flat_scr
16    S_ENDPGM 0
17
18...
19