# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx90a -verify-machineinstrs -run-pass=si-opt-vgpr-liverange -o - %s | FileCheck %s
# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx90a -passes=si-opt-vgpr-liverange -o - %s | FileCheck %s
#
# This is a very rare case which comes from llvm-reduce. The SI_IF/SI_ELSE usage is quite different from normal.
#
# CHECK-LABEL: name: unusual_if_else
---
name:            unusual_if_else
tracksRegLiveness: true
machineFunctionInfo:
  scratchRSrcReg:  '$sgpr0_sgpr1_sgpr2_sgpr3'
  stackPtrOffsetReg: '$sgpr32'
body:             |
  bb.0:
    successors: %bb.1(0x80000000)

    %0:sreg_32 = S_ADD_U32 undef %1.sub0:sgpr_64, 32, implicit-def $scc
    %2:sreg_32 = S_ADDC_U32 undef %1.sub1:sgpr_64, 0, implicit-def dead $scc, implicit killed $scc
    %3:sreg_64 = REG_SEQUENCE killed %0, %subreg.sub0, killed %2, %subreg.sub1
    %4:vgpr_32 = V_MOV_B32_e32 0, implicit $exec

  bb.1:
    successors: %bb.2(0x40000000), %bb.4(0x40000000)

    %5:sreg_64 = V_CMP_LT_I32_e64 0, %4, implicit $exec
    %6:sreg_64 = SI_IF killed %5, %bb.2, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
    S_BRANCH %bb.4

  bb.2:
    successors: %bb.4(0x40000000), %bb.3(0x40000000)

    dead %7:sreg_64 = SI_ELSE killed %6, %bb.4, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
    S_BRANCH %bb.3

  bb.3:
    successors: %bb.4(0x80000000)

    %8:sreg_64 = V_CMP_EQ_U32_e64 0, killed %4, implicit $exec
    dead %9:sreg_64 = SI_IF killed %8, %bb.4, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
    S_BRANCH %bb.4

  bb.4:

...