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1# RUN: llc -mtriple=amdgcn -mcpu=tonga %s -start-before detect-dead-lanes -stop-before machine-scheduler -verify-machineinstrs -o - | FileCheck -check-prefix=GCN %s2# RUN: llc -mtriple=amdgcn -mcpu=tonga %s -start-before detect-dead-lanes -stop-before machine-scheduler -verify-machineinstrs -early-live-intervals -o - | FileCheck -check-prefix=GCN %s3 4# GCN-LABEL: name: dead_lane5# GCN: bb.0:6# GCN-NEXT: %5:vgpr_32 = nofpexcept V_MAC_F32_e32 undef %1:vgpr_32, undef %1:vgpr_32, undef %5, implicit $mode, implicit $exec7# GCN-NEXT: FLAT_STORE_DWORD undef %4:vreg_64, %5,8---9name: dead_lane10tracksRegLiveness: true11body: |12 bb.0:13 %1:vgpr_32 = nofpexcept V_MAC_F32_e32 undef %0:vgpr_32, undef %0:vgpr_32, undef %0:vgpr_32, implicit $mode, implicit $exec14 %2:vgpr_32 = nofpexcept V_MAC_F32_e32 undef %0:vgpr_32, undef %0:vgpr_32, undef %0:vgpr_32, implicit $mode, implicit $exec15 %3:vreg_64 = REG_SEQUENCE %1:vgpr_32, %subreg.sub0, %2:vgpr_32, %subreg.sub116 FLAT_STORE_DWORD undef %4:vreg_64, %3.sub0, 0, 0, implicit $exec, implicit $flat_scr17 S_ENDPGM 018 19...20