# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -verify-regalloc -stress-regalloc=3 -start-before=greedy,1 -stop-before=virtregrewriter,1 -o - %s | FileCheck %s
---
name: split_instruction_subranges
alignment:       1
tracksRegLiveness: true
frameInfo:
  maxAlignment:    1
  hasCalls:        true
machineFunctionInfo:
  maxKernArgAlign: 1
  isEntryFunction: true
  scratchRSrcReg:  '$sgpr0_sgpr1_sgpr2_sgpr3'
  stackPtrOffsetReg: '$sgpr32'
  argumentInfo:
    privateSegmentBuffer: { reg: '$sgpr0_sgpr1_sgpr2_sgpr3' }
    privateSegmentWaveByteOffset: { reg: '$sgpr17' }
  occupancy:       8
body:             |
  bb.0:
    ; CHECK-LABEL: name: split_instruction_subranges
    ; CHECK: [[GLOBAL_LOAD_DWORDX2_SADDR:%[0-9]+]]:vreg_64 = GLOBAL_LOAD_DWORDX2_SADDR undef $sgpr0_sgpr1, undef %1:vgpr_32, 0, 0, implicit $exec :: (load (s64), addrspace 1)
    ; CHECK-NEXT: [[GLOBAL_LOAD_DWORDX2_SADDR1:%[0-9]+]]:vreg_64 = GLOBAL_LOAD_DWORDX2_SADDR undef $sgpr0_sgpr1, undef %3:vgpr_32, 4, 0, implicit $exec :: (load (s64), addrspace 1)
    ; CHECK-NEXT: SI_SPILL_V64_SAVE [[GLOBAL_LOAD_DWORDX2_SADDR1]], %stack.0, $sgpr32, 0, implicit $exec :: (store (s64) into %stack.0, align 4, addrspace 5)
    ; CHECK-NEXT: [[GLOBAL_LOAD_DWORDX2_SADDR2:%[0-9]+]]:vreg_64 = GLOBAL_LOAD_DWORDX2_SADDR undef $sgpr0_sgpr1, undef %5:vgpr_32, 8, 0, implicit $exec :: (load (s64), addrspace 1)
    ; CHECK-NEXT: undef %9.sub1:vreg_64 = COPY [[GLOBAL_LOAD_DWORDX2_SADDR]].sub1
    ; CHECK-NEXT: S_NOP 0, implicit %9.sub1
    ; CHECK-NEXT: [[SI_SPILL_V64_RESTORE:%[0-9]+]]:vreg_64 = SI_SPILL_V64_RESTORE %stack.0, $sgpr32, 0, implicit $exec :: (load (s64) from %stack.0, align 4, addrspace 5)
    ; CHECK-NEXT: undef %11.sub0:vreg_64 = COPY [[SI_SPILL_V64_RESTORE]].sub0
    ; CHECK-NEXT: S_NOP 0, implicit %11.sub0
    ; CHECK-NEXT: undef %7.sub1:vreg_64 = COPY [[GLOBAL_LOAD_DWORDX2_SADDR2]].sub1
    ; CHECK-NEXT: S_NOP 0, implicit %7.sub1
    ; CHECK-NEXT: S_ENDPGM 0
    %1:vreg_64 = GLOBAL_LOAD_DWORDX2_SADDR undef $sgpr0_sgpr1, undef %4:vgpr_32, 0, 0, implicit $exec :: (load (s64), addrspace 1)
    %2:vreg_64 = GLOBAL_LOAD_DWORDX2_SADDR undef $sgpr0_sgpr1, undef %5:vgpr_32, 4, 0, implicit $exec :: (load (s64), addrspace 1)
    %3:vreg_64 = GLOBAL_LOAD_DWORDX2_SADDR undef $sgpr0_sgpr1, undef %6:vgpr_32, 8, 0, implicit $exec :: (load (s64), addrspace 1)
    S_NOP 0, implicit %1.sub1
    S_NOP 0, implicit %2.sub0
    S_NOP 0, implicit %3.sub1
    S_ENDPGM 0

...

---
name: split_instruction_subranges_use_is_subreg_def
alignment:       1
tracksRegLiveness: true
frameInfo:
  maxAlignment:    1
  hasCalls:        true
machineFunctionInfo:
  maxKernArgAlign: 1
  isEntryFunction: true
  scratchRSrcReg:  '$sgpr0_sgpr1_sgpr2_sgpr3'
  stackPtrOffsetReg: '$sgpr32'
  argumentInfo:
    privateSegmentBuffer: { reg: '$sgpr0_sgpr1_sgpr2_sgpr3' }
    privateSegmentWaveByteOffset: { reg: '$sgpr17' }
  occupancy:       8
body:             |
  bb.0:
    ; CHECK-LABEL: name: split_instruction_subranges_use_is_subreg_def
    ; CHECK: [[GLOBAL_LOAD_DWORDX2_SADDR:%[0-9]+]]:vreg_64 = GLOBAL_LOAD_DWORDX2_SADDR undef $sgpr0_sgpr1, undef %1:vgpr_32, 0, 0, implicit $exec :: (load (s64), addrspace 1)
    ; CHECK-NEXT: [[GLOBAL_LOAD_DWORDX2_SADDR1:%[0-9]+]]:vreg_64 = GLOBAL_LOAD_DWORDX2_SADDR undef $sgpr0_sgpr1, undef %3:vgpr_32, 4, 0, implicit $exec :: (load (s64), addrspace 1)
    ; CHECK-NEXT: SI_SPILL_V64_SAVE [[GLOBAL_LOAD_DWORDX2_SADDR1]], %stack.1, $sgpr32, 0, implicit $exec :: (store (s64) into %stack.1, align 4, addrspace 5)
    ; CHECK-NEXT: [[GLOBAL_LOAD_DWORDX2_SADDR2:%[0-9]+]]:vreg_64 = GLOBAL_LOAD_DWORDX2_SADDR undef $sgpr0_sgpr1, undef %5:vgpr_32, 8, 0, implicit $exec :: (load (s64), addrspace 1)
    ; CHECK-NEXT: SI_SPILL_V64_SAVE [[GLOBAL_LOAD_DWORDX2_SADDR2]], %stack.0, $sgpr32, 0, implicit $exec :: (store (s64) into %stack.0, align 4, addrspace 5)
    ; CHECK-NEXT: S_NOP 0, implicit-def [[GLOBAL_LOAD_DWORDX2_SADDR]].sub0
    ; CHECK-NEXT: [[SI_SPILL_V64_RESTORE:%[0-9]+]]:vreg_64 = SI_SPILL_V64_RESTORE %stack.1, $sgpr32, 0, implicit $exec :: (load (s64) from %stack.1, align 4, addrspace 5)
    ; CHECK-NEXT: undef %13.sub0:vreg_64 = COPY [[SI_SPILL_V64_RESTORE]].sub0
    ; CHECK-NEXT: S_NOP 0, implicit-def %13.sub1
    ; CHECK-NEXT: undef %15.sub0:vreg_64 = COPY %13.sub0
    ; CHECK-NEXT: [[SI_SPILL_V64_RESTORE1:%[0-9]+]]:vreg_64 = SI_SPILL_V64_RESTORE %stack.0, $sgpr32, 0, implicit $exec :: (load (s64) from %stack.0, align 4, addrspace 5)
    ; CHECK-NEXT: undef %7.sub1:vreg_64 = COPY [[SI_SPILL_V64_RESTORE1]].sub1
    ; CHECK-NEXT: S_NOP 0, implicit-def %7.sub0
    ; CHECK-NEXT: undef %9.sub1:vreg_64 = COPY %7.sub1
    ; CHECK-NEXT: S_NOP 0, implicit [[GLOBAL_LOAD_DWORDX2_SADDR]].sub1
    ; CHECK-NEXT: undef %14.sub0:vreg_64 = COPY %15.sub0
    ; CHECK-NEXT: S_NOP 0, implicit %14.sub0
    ; CHECK-NEXT: undef %8.sub1:vreg_64 = COPY %9.sub1
    ; CHECK-NEXT: S_NOP 0, implicit %8.sub1
    ; CHECK-NEXT: S_ENDPGM 0
    %1:vreg_64 = GLOBAL_LOAD_DWORDX2_SADDR undef $sgpr0_sgpr1, undef %4:vgpr_32, 0, 0, implicit $exec :: (load (s64), addrspace 1)
    %2:vreg_64 = GLOBAL_LOAD_DWORDX2_SADDR undef $sgpr0_sgpr1, undef %5:vgpr_32, 4, 0, implicit $exec :: (load (s64), addrspace 1)
    %3:vreg_64 = GLOBAL_LOAD_DWORDX2_SADDR undef $sgpr0_sgpr1, undef %6:vgpr_32, 8, 0, implicit $exec :: (load (s64), addrspace 1)
    S_NOP 0, implicit-def %1.sub0
    S_NOP 0, implicit-def %2.sub1
    S_NOP 0, implicit-def %3.sub0
    S_NOP 0, implicit %1.sub1
    S_NOP 0, implicit %2.sub0
    S_NOP 0, implicit %3.sub1
    S_ENDPGM 0

...