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# 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, implicit $exec
dead %2:vgpr_32 = V_MAC_F32_e32 %0:vgpr_32, %1:vgpr_32, %2:vgpr_32, implicit $exec
S_ENDPGM 0
|
