llvm/test/CodeGen/AMDGPU/v_mov_b64_expand_and_shrink.mir

# RUN: llc -march=amdgcn -mcpu=gfx900 -run-pass postrapseudos,si-shrink-instructions -verify-machineinstrs %s -o - | FileCheck -check-prefix=GCN %s

---
# GCN-LABEL: name: expand_imm64_sext_shrink_to_bfrev
# GCN: $vgpr0 = V_MOV_B32_e32 0, implicit $exec, implicit-def $vgpr0_vgpr1
# GCN: $vgpr1 = V_BFREV_B32_e32 1, implicit $exec, implicit-def $vgpr0_vgpr1
name:            expand_imm64_sext_shrink_to_bfrev
tracksRegLiveness: true
body:             |
  bb.0:
    $vgpr0_vgpr1 = V_MOV_B64_PSEUDO -9223372036854775808, implicit $exec
...