# RUN: llc -mtriple=amdgcn -mcpu=gfx908 -run-pass machine-scheduler -amdgpu-disable-unclustered-high-rp-reschedule -verify-machineinstrs %s -o - -debug-only=machine-scheduler 2>&1 | FileCheck -check-prefix=DEBUG %s
# REQUIRES: asserts

--- |
  define void @sink_and_inc_idx_when_skipping_small_region_1() "amdgpu-flat-work-group-size"="1,64" {
    ret void
  }

  define void @sink_and_inc_idx_when_skipping_small_regions_2() "amdgpu-flat-work-group-size"="1,64" {
    ret void
  }
---
name:            sink_and_inc_idx_when_skipping_small_region_1
tracksRegLiveness: true
machineFunctionInfo:
  isEntryFunction: true
body:             |
  ; DEBUG: Machine code for function sink_and_inc_idx_when_skipping_small_region_1: IsSSA, NoPHIs, TracksLiveness
  ; DEBUG: Retrying function scheduling with improved occupancy of 10 from rematerializing
  ; DEBUG-NEXT: ********** MI Scheduling **********
  ; DEBUG-NEXT: sink_and_inc_idx_when_skipping_small_region_1:%bb.2
  ; DEBUG-NEXT:   From: %24:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 24, implicit $exec, implicit $mode, implicit-def $m0
  ; DEBUG-NEXT:     To: End RegionInstrs: 2
  bb.0:
    successors: %bb.1

    %0:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 0, implicit $exec, implicit $mode, implicit-def $m0
    %1:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 1, implicit $exec, implicit $mode, implicit-def $m0
    %2:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 2, implicit $exec, implicit $mode, implicit-def $m0
    %3:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 3, implicit $exec, implicit $mode, implicit-def $m0
    %4:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 4, implicit $exec, implicit $mode, implicit-def $m0
    %5:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 5, implicit $exec, implicit $mode, implicit-def $m0
    %6:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 6, implicit $exec, implicit $mode, implicit-def $m0
    %7:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 7, implicit $exec, implicit $mode, implicit-def $m0
    %8:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 8, implicit $exec, implicit $mode, implicit-def $m0
    %9:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 9, implicit $exec, implicit $mode, implicit-def $m0
    %10:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 10, implicit $exec, implicit $mode, implicit-def $m0
    %11:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 11, implicit $exec, implicit $mode, implicit-def $m0
    %12:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 12, implicit $exec, implicit $mode, implicit-def $m0
    %13:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 13, implicit $exec, implicit $mode, implicit-def $m0
    %14:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 14, implicit $exec, implicit $mode, implicit-def $m0
    %15:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 15, implicit $exec, implicit $mode, implicit-def $m0
    %16:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 16, implicit $exec, implicit $mode, implicit-def $m0
    %17:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 17, implicit $exec, implicit $mode, implicit-def $m0
    %18:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 18, implicit $exec, implicit $mode, implicit-def $m0
    %19:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 19, implicit $exec, implicit $mode, implicit-def $m0
    %20:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 20, implicit $exec, implicit $mode, implicit-def $m0
    %21:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 21, implicit $exec, implicit $mode, implicit-def $m0
    %22:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 22, implicit $exec, implicit $mode, implicit-def $m0

  bb.1:
  ; predecessors: %bb.0
    successors: %bb.2

    %23:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 23, implicit $exec, implicit $mode
    S_NOP 0


  bb.2:
  ; predecessors: %bb.1
    successors: %bb.3

    %24:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 24, implicit $exec, implicit $mode, implicit-def $m0
    S_NOP 0, implicit %24

  bb.3:
  ; predcessors: %bb.2

    S_NOP 0, implicit %23
    S_NOP 0, implicit %0, implicit %1
    S_NOP 0, implicit %2, implicit %3
    S_NOP 0, implicit %4, implicit %5
    S_NOP 0, implicit %6, implicit %7
    S_NOP 0, implicit %8, implicit %9
    S_NOP 0, implicit %10, implicit %11
    S_NOP 0, implicit %12, implicit %13
    S_NOP 0, implicit %14, implicit %15
    S_NOP 0, implicit %16, implicit %17
    S_NOP 0, implicit %18, implicit %19
    S_NOP 0, implicit %20, implicit %21
    S_NOP 0, implicit %22
    S_ENDPGM 0
...
---
name:            sink_and_inc_idx_when_skipping_small_regions_2
tracksRegLiveness: true
machineFunctionInfo:
  isEntryFunction: true
body:             |
  ; DEBUG: Machine code for function sink_and_inc_idx_when_skipping_small_regions_2: IsSSA, NoPHIs, TracksLiveness
  ; DEBUG: Retrying function scheduling with improved occupancy of 10 from rematerializing
  ; DEBUG-NEXT: ********** MI Scheduling **********
  ; DEBUG-NEXT: sink_and_inc_idx_when_skipping_small_regions_2:%bb.2
  ; DEBUG-NEXT:   From: %24:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 24, implicit $exec, implicit $mode, implicit-def $m0
  ; DEBUG-NEXT:     To: End RegionInstrs: 4
  bb.0:
    successors: %bb.1

    %0:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 0, implicit $exec, implicit $mode, implicit-def $m0
    %1:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 1, implicit $exec, implicit $mode, implicit-def $m0
    %2:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 2, implicit $exec, implicit $mode, implicit-def $m0
    %3:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 3, implicit $exec, implicit $mode, implicit-def $m0
    %4:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 4, implicit $exec, implicit $mode, implicit-def $m0
    %5:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 5, implicit $exec, implicit $mode, implicit-def $m0
    %6:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 6, implicit $exec, implicit $mode, implicit-def $m0
    %7:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 7, implicit $exec, implicit $mode, implicit-def $m0
    %8:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 8, implicit $exec, implicit $mode, implicit-def $m0
    %9:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 9, implicit $exec, implicit $mode, implicit-def $m0
    %10:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 10, implicit $exec, implicit $mode, implicit-def $m0
    %11:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 11, implicit $exec, implicit $mode, implicit-def $m0
    %12:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 12, implicit $exec, implicit $mode, implicit-def $m0
    %13:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 13, implicit $exec, implicit $mode, implicit-def $m0
    %14:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 14, implicit $exec, implicit $mode, implicit-def $m0
    %15:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 15, implicit $exec, implicit $mode, implicit-def $m0
    %16:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 16, implicit $exec, implicit $mode, implicit-def $m0
    %17:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 17, implicit $exec, implicit $mode, implicit-def $m0
    %18:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 18, implicit $exec, implicit $mode, implicit-def $m0
    %19:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 19, implicit $exec, implicit $mode, implicit-def $m0
    %20:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 20, implicit $exec, implicit $mode, implicit-def $m0
    %21:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 21, implicit $exec, implicit $mode, implicit-def $m0
    %22:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 22, implicit $exec, implicit $mode, implicit-def $m0

  bb.1:
  ; predecessors: %bb.0
    successors: %bb.2

    %23:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 23, implicit $exec, implicit $mode
    S_NOP 0


  bb.2:
  ; predecessors: %bb.1
    successors: %bb.3

    %24:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 24, implicit $exec, implicit $mode, implicit-def $m0
    S_NOP 0, implicit %24
    S_NOP 0, implicit %23

  bb.3:
  ; predcessors: %bb.2

    S_NOP 0, implicit %0, implicit %1
    S_NOP 0, implicit %2, implicit %3
    S_NOP 0, implicit %4, implicit %5
    S_NOP 0, implicit %6, implicit %7
    S_NOP 0, implicit %8, implicit %9
    S_NOP 0, implicit %10, implicit %11
    S_NOP 0, implicit %12, implicit %13
    S_NOP 0, implicit %14, implicit %15
    S_NOP 0, implicit %16, implicit %17
    S_NOP 0, implicit %18, implicit %19
    S_NOP 0, implicit %20, implicit %21
    S_NOP 0, implicit %22
    S_ENDPGM 0
...