| # RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs -run-pass dead-mi-elimination -o - %s | FileCheck -check-prefix=GCN %s |
| |
| # GCN-LABEL: name: dead_undef |
| # GCN: bb.0: |
| # GCN-NEXT: S_ENDPGM 0 |
| --- |
| name: dead_undef |
| tracksRegLiveness: true |
| registers: |
| - { id: 0, class: vgpr_32 } |
| - { id: 1, class: vgpr_32 } |
| - { id: 2, class: vgpr_32 } |
| body: | |
| bb.0: |
| %0 = IMPLICIT_DEF |
| %1 = IMPLICIT_DEF |
| dead %2:vgpr_32 = V_MAC_F32_e32 %0:vgpr_32, %1:vgpr_32, undef %2:vgpr_32, implicit $exec |
| S_ENDPGM 0 |
| |
| # GCN-LABEL: name: dead_defined |
| # GCN: bb.0: |
| # GCN-NEXT: S_ENDPGM 0 |
| --- |
| name: dead_defined |
| tracksRegLiveness: true |
| registers: |
| - { id: 0, class: vgpr_32 } |
| - { id: 1, class: vgpr_32 } |
| - { id: 2, class: vgpr_32 } |
| body: | |
| bb.0: |
| %0 = IMPLICIT_DEF |
| %1 = IMPLICIT_DEF |
| %2 = IMPLICIT_DEF |
| dead %2:vgpr_32 = V_MAC_F32_e32 %0:vgpr_32, %1:vgpr_32, %2:vgpr_32, implicit $exec |
| S_ENDPGM 0 |
| |
| # Probably this dead mac can be removed anyway. |
| # GCN-LABEL: name: dead_def_live_use |
| # GCN: dead %2:vgpr_32 = V_MAC_F32_e32 %0, %1, %2, implicit $exec |
| --- |
| name: dead_def_live_use |
| tracksRegLiveness: true |
| registers: |
| - { id: 0, class: vgpr_32 } |
| - { id: 1, class: vgpr_32 } |
| - { id: 2, class: vgpr_32 } |
| body: | |
| bb.0: |
| %0 = IMPLICIT_DEF |
| %1 = IMPLICIT_DEF |
| %2 = IMPLICIT_DEF |
| GLOBAL_STORE_DWORD undef $vgpr0_vgpr1, %2, 0, 0, 0, 0, implicit $exec |
| dead %2:vgpr_32 = V_MAC_F32_e32 %0:vgpr_32, %1:vgpr_32, %2:vgpr_32, implicit $exec |
| S_ENDPGM 0 |