test/CodeGen/AMDGPU/dpp64_combine.mir

# RUN: llc -march=amdgcn -mcpu=gfx90a -run-pass=gcn-dpp-combine -verify-machineinstrs -o - %s | FileCheck %s --check-prefix=GCN

---
# GCN-LABEL: name: dpp64_old_impdef
# GCN: %3:vreg_64 = V_CEIL_F64_dpp %1, 0, %0, 337, 15, 15, 1, implicit $mode, implicit $exec
---
name: dpp64_old_impdef
tracksRegLiveness: true
body: |
  bb.0:
    %0:vreg_64 = IMPLICIT_DEF
    %1:vreg_64 = IMPLICIT_DEF
    %2:vreg_64 = V_MOV_B64_DPP_PSEUDO %1:vreg_64, %0:vreg_64, 337, 15, 15, 1, implicit $exec
    %3:vreg_64 = V_CEIL_F64_e32 %2, implicit $mode, implicit $exec
...

# GCN-LABEL: name: dpp64_old_undef
# GCN: %3:vreg_64 = V_CEIL_F64_dpp undef %1:vreg_64, 0, undef %2:vreg_64, 337, 15, 15, 1, implicit $mode, implicit $exec
---
name: dpp64_old_undef
tracksRegLiveness: true
body: |
  bb.0:
    %2:vreg_64 = V_MOV_B64_DPP_PSEUDO undef %1:vreg_64, undef %0:vreg_64, 337, 15, 15, 1, implicit $exec
    %3:vreg_64 = V_CEIL_F64_e32 %2, implicit $mode, implicit $exec
...

# GCN-LABEL: name: dpp64_old_is_0
# GCN: %3:vreg_64 = V_CEIL_F64_dpp %4, 0, undef %2:vreg_64, 337, 15, 15, 1, implicit $mode, implicit $exec
name: dpp64_old_is_0
tracksRegLiveness: true
body: |
  bb.0:
    %1:vreg_64 = V_MOV_B64_PSEUDO 0, implicit $exec
    %2:vreg_64 = V_MOV_B64_DPP_PSEUDO undef %1, undef %0:vreg_64, 337, 15, 15, 1, implicit $exec
    %3:vreg_64 = V_CEIL_F64_e32 %2, implicit $mode, implicit $exec
...

# DPP64 does not support all control values and must be split to become legal
# GCN-LABEL: name: dpp64_illegal_ctrl
# GCN: %4:vgpr_32 = V_MOV_B32_dpp undef %1.sub0:vreg_64, undef %2.sub0:vreg_64, 1, 15, 15, 1, implicit $exec
# GCN: %5:vgpr_32 = V_MOV_B32_dpp undef %1.sub1:vreg_64, undef %2.sub1:vreg_64, 1, 15, 15, 1, implicit $exec
# GCN: %0:vreg_64 = REG_SEQUENCE %4, %subreg.sub0, %5, %subreg.sub1
# GCN: %3:vreg_64 = V_CEIL_F64_e32 %0, implicit $mode, implicit $exec
name: dpp64_illegal_ctrl
tracksRegLiveness: true
body: |
  bb.0:
    %2:vreg_64 = V_MOV_B64_DPP_PSEUDO undef %1:vreg_64, undef %0:vreg_64, 1, 15, 15, 1, implicit $exec
    %3:vreg_64 = V_CEIL_F64_e32 %2, implicit $mode, implicit $exec
...