llvm/test/CodeGen/MIR/AMDGPU/virtregmap-stash.mir

# RUN: llc -mtriple=amdgcn -mcpu=gfx1100 -run-pass=virtregmap \
# RUN:     -o - %s | FileCheck %s
#
# Verify that VirtRegMap state (split-from, assigned-phys) round-trips through
# MIR.

# CHECK-LABEL: name: test_vrm_roundtrip
# CHECK:      registers:
# CHECK:      id: 0,
# CHECK-NOT:  split-from:
# CHECK:      assigned-phys: '$vgpr5'
# CHECK:      id: 1,
# CHECK:      split-from: '%0'
# CHECK:      assigned-phys: '$vgpr6'
# CHECK:      id: 2,
# CHECK:      split-from: '%0'
# CHECK:      assigned-phys: '$vgpr7'
---
name: test_vrm_roundtrip
tracksRegLiveness: true
registers:
  - { id: 0, class: vgpr_32, assigned-phys: '$vgpr5' }
  - { id: 1, class: vgpr_32, assigned-phys: '$vgpr6', split-from: '%0' }
  - { id: 2, class: vgpr_32, assigned-phys: '$vgpr7', split-from: '%0' }
body: |
  bb.0:
    liveins: $vgpr0
    %0:vgpr_32 = COPY $vgpr0
    %1:vgpr_32 = V_ADD_U32_e32 1, %0:vgpr_32, implicit $exec
    %2:vgpr_32 = V_ADD_U32_e32 2, %0:vgpr_32, implicit $exec
    S_ENDPGM 0, implicit %0, implicit %1, implicit %2
...