| # RUN: llc -march=amdgcn -mcpu=gfx803 -verify-machineinstrs -run-pass si-insert-waitcnts -o - %s | FileCheck -check-prefixes=GCN,GFX8 %s |
| # RUN: llc -march=amdgcn -mcpu=gfx900 -verify-machineinstrs -run-pass si-insert-waitcnts -o - %s | FileCheck -check-prefixes=GCN,GFX9 %s |
| |
| --- | |
| |
| define amdgpu_ps void @irreducible_loop() { |
| ret void |
| } |
| define amdgpu_ps void @irreducible_loop_extended() { |
| ret void |
| } |
| |
| ... |
| --- |
| |
| # GCN-LABEL: name: irreducible_loop{{$}} |
| # GCN: S_LOAD_DWORDX4_IMM |
| # GFX8: S_WAITCNT 127{{$}} |
| # GFX9: S_WAITCNT 49279{{$}} |
| # GCN: S_BUFFER_LOAD_DWORD_IMM |
| # GFX8: S_WAITCNT 127{{$}} |
| # GFX9: S_WAITCNT 49279{{$}} |
| # GCN: S_CMP_GE_I32 |
| name: irreducible_loop |
| body: | |
| bb.0: |
| successors: %bb.3, %bb.2 |
| |
| S_CBRANCH_VCCZ %bb.2, implicit $vcc |
| S_BRANCH %bb.3 |
| |
| bb.1: |
| successors: %bb.3, %bb.2 |
| |
| S_CBRANCH_VCCNZ %bb.3, implicit $vcc |
| |
| bb.2: |
| successors: %bb.3 |
| |
| renamable $sgpr4_sgpr5_sgpr6_sgpr7 = S_LOAD_DWORDX4_IMM renamable $sgpr0_sgpr1, 0, 0 |
| renamable $sgpr3 = S_BUFFER_LOAD_DWORD_IMM killed renamable $sgpr4_sgpr5_sgpr6_sgpr7, 0, 0 |
| |
| bb.3: |
| successors: %bb.1, %bb.4 |
| |
| S_CMP_GE_I32 renamable $sgpr2, renamable $sgpr3, implicit-def $scc |
| S_CBRANCH_SCC0 %bb.1, implicit killed $scc |
| |
| bb.4: |
| |
| S_ENDPGM 0 |
| |
| ... |
| |
| # GCN-LABEL: name: irreducible_loop_extended |
| |
| # GCN: S_LOAD_DWORDX4_IMM |
| # GFX8: S_WAITCNT 127{{$}} |
| # GFX9: S_WAITCNT 49279{{$}} |
| # GCN: BUFFER_STORE_DWORD_OFFEN_exact |
| # GFX8: S_WAITCNT 127{{$}} |
| # GFX9: S_WAITCNT 49279{{$}} |
| # GCN: BUFFER_STORE_DWORD_OFFEN_exact |
| # GCN: S_LOAD_DWORDX4_IMM |
| # GFX8: S_WAITCNT 127{{$}} |
| # GFX9: S_WAITCNT 49279{{$}} |
| # GCN: BUFFER_ATOMIC_ADD_OFFSET_RTN |
| # GCN: S_WAITCNT 3952 |
| # GCN: FLAT_STORE_DWORD |
| # GCN: S_ENDPGM 0 |
| name: irreducible_loop_extended |
| |
| body: | |
| bb.0: |
| successors: %bb.1, %bb.2 |
| $sgpr4_sgpr5_sgpr6_sgpr7 = S_LOAD_DWORDX4_IMM renamable $sgpr2_sgpr3, 0, 0 |
| S_CBRANCH_VCCZ %bb.2, implicit $vcc |
| |
| bb.1: |
| successors: %bb.2 |
| BUFFER_STORE_DWORD_OFFEN_exact killed renamable $vgpr3, renamable $vgpr2, renamable $sgpr4_sgpr5_sgpr6_sgpr7, 0, 0, 0, 0, 0, implicit $exec |
| |
| bb.2: |
| successors: %bb.3, %bb.6 |
| S_CBRANCH_VCCNZ %bb.6, implicit $vcc |
| |
| bb.3: |
| successors: %bb.4, %bb.5 |
| BUFFER_STORE_DWORD_OFFEN_exact killed renamable $vgpr3, killed renamable $vgpr2, killed renamable $sgpr4_sgpr5_sgpr6_sgpr7, 0, 0, 0, 0, 0, implicit $exec |
| S_CBRANCH_VCCNZ %bb.5, implicit $vcc |
| |
| bb.4: |
| successors: %bb.5 |
| renamable $sgpr12_sgpr13_sgpr14_sgpr15 = S_LOAD_DWORDX4_IMM killed renamable $sgpr2_sgpr3, 64, 0 |
| renamable $vgpr2 = BUFFER_ATOMIC_ADD_OFFSET_RTN killed renamable $vgpr2, killed renamable $sgpr12_sgpr13_sgpr14_sgpr15, 0, 0, 0, implicit $exec |
| |
| bb.5: |
| successors: %bb.6 |
| |
| bb.6: |
| FLAT_STORE_DWORD $vgpr3_vgpr4, $vgpr2, 0, 0, 0, implicit $exec, implicit $flat_scr |
| S_ENDPGM 0 |
| ... |