| # RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -verify-machineinstrs -run-pass post-RA-sched %s -o - | FileCheck -check-prefix=GCN %s |
| |
| # WAVE_BARRIER and SI_MASKED_UNREACHABLE are not really instructions. |
| # To fix the hazard (m0 def followed by V_INTERP), the scheduler |
| # should move another instruction into the slot. |
| --- |
| # CHECK-LABEL: name: hazard_wave_barrier |
| # CHECK-LABEL: bb.0: |
| # GCN: $m0 = S_MOV_B32 killed renamable $sgpr0 |
| # GCN-NEXT: WAVE_BARRIER |
| # GCN-NEXT: S_MOV_B32 0 |
| # GCN-NEXT: V_INTERP_MOV_F32 |
| name: hazard_wave_barrier |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $sgpr0 |
| |
| $m0 = S_MOV_B32 killed renamable $sgpr0 |
| WAVE_BARRIER |
| renamable $vgpr0 = V_INTERP_MOV_F32 2, 0, 0, implicit $mode, implicit $m0, implicit $exec |
| renamable $sgpr1 = S_MOV_B32 0 |
| S_ENDPGM 0 |
| |
| ... |
| # GCN-LABEL: name: hazard-masked-unreachable |
| # CHECK-LABEL: bb.0: |
| # GCN: $m0 = S_MOV_B32 killed renamable $sgpr0 |
| # GCN-NEXT: SI_MASKED_UNREACHABLE |
| # GCN-NEXT: S_MOV_B32 0 |
| # GCN-NEXT: V_INTERP_MOV_F32 |
| --- |
| name: hazard-masked-unreachable |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $sgpr0 |
| |
| $m0 = S_MOV_B32 killed renamable $sgpr0 |
| SI_MASKED_UNREACHABLE |
| renamable $vgpr0 = V_INTERP_MOV_F32 2, 0, 0, implicit $mode, implicit $m0, implicit $exec |
| renamable $sgpr1 = S_MOV_B32 0 |
| bb.1: |
| S_ENDPGM 0 |
| ... |