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1# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py2# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx906 -verify-machineinstrs -run-pass=prologepilog -o - %s | FileCheck -check-prefix=GCN %s3 4# The scratch register vgpr0 is used here to spill sgpr35 register.5# The function also returns a value that goes via. vgpr0.6# This test is to ensure the vgpr0 store/restore inserted at the prolog/epilog7# preserves only its inactive lanes to ensure the outgoing value will not be overwritten.8 9---10name: preserve_scratch_vgpr_inactive_lanes11tracksRegLiveness: true12machineFunctionInfo:13 scratchRSrcReg: $sgpr0_sgpr1_sgpr2_sgpr314 frameOffsetReg: $sgpr3315 stackPtrOffsetReg: $sgpr3216 17body: |18 bb.0:19 liveins: $sgpr35, $vgpr0, $sgpr30_sgpr3120 ; GCN-LABEL: name: preserve_scratch_vgpr_inactive_lanes21 ; GCN: liveins: $sgpr35, $vgpr0, $sgpr30_sgpr3122 ; GCN-NEXT: {{ $}}23 ; GCN-NEXT: $vgpr0 = SI_SPILL_S32_TO_VGPR $sgpr35, 0, killed $vgpr024 ; GCN-NEXT: $sgpr35 = S_MOV_B32 525 ; GCN-NEXT: $sgpr35 = SI_RESTORE_S32_FROM_VGPR $vgpr0, 026 ; GCN-NEXT: renamable $vgpr0 = V_MOV_B32_e32 10, implicit $exec27 ; GCN-NEXT: S_SETPC_B64_return killed renamable $sgpr30_sgpr31, implicit $vgpr028 renamable $vgpr0 = SI_SPILL_S32_TO_VGPR $sgpr35, 0, killed $vgpr029 $sgpr35 = S_MOV_B32 530 $sgpr35 = SI_RESTORE_S32_FROM_VGPR $vgpr0, 031 renamable $vgpr0 = V_MOV_B32_e32 10, implicit $exec32 S_SETPC_B64_return killed renamable $sgpr30_sgpr31, implicit $vgpr033...34