test/CodeGen/AMDGPU/regalloc-failure-overlapping-insert-assert.mir

# RUN: not llc -march=amdgcn -mcpu=gfx908 -verify-machineinstrs=0 -start-before=greedy,1 -stop-after=virtregrewriter,1 %s -o /dev/null 2>&1 | FileCheck -check-prefix=ERR %s
# RUN: not --crash llc -march=amdgcn -mcpu=gfx908 -verify-machineinstrs -start-before=greedy,1 -stop-after=virtregrewriter,1 %s -o /dev/null 2>&1 | FileCheck -check-prefixes=ERR,VERIFIER %s

# FIXME: We should not produce a verifier error after erroring

# ERR: error: inline assembly requires more registers than available
# VERIFIER: *** Bad machine code: Using an undefined physical register ***

# This testcase cannot be compiled with the enforced register
# budget. Previously, tryLastChanceRecoloring would assert here. It
# was attempting to recolor a superregister with an overlapping
# subregister over the same range.

--- |
  define void @foo() #0 {
    ret void
  }

  attributes #0 = { "amdgpu-waves-per-eu"="8,8" }

...
---
name:            foo
tracksRegLiveness: true
registers:
  - { id: 0, class: vgpr_32 }
  - { id: 1, class: vgpr_32 }
  - { id: 2, class: vreg_512 }
  - { id: 3, class: vreg_256 }
  - { id: 4, class: vreg_128 }
  - { id: 5, class: vreg_96 }
  - { id: 6, class: vreg_96 }
  - { id: 7, class: vreg_512 }
  - { id: 8, class: vreg_256 }
  - { id: 9, class: vreg_128 }
  - { id: 10, class: vreg_96 }
  - { id: 11, class: vreg_96 }
  - { id: 12, class: sreg_64 }
  - { id: 13, class: sgpr_64 }
  - { id: 14, class: vgpr_32 }
machineFunctionInfo:
  scratchRSrcReg:  '$sgpr0_sgpr1_sgpr2_sgpr3'
  frameOffsetReg:  '$sgpr33'
  stackPtrOffsetReg: '$sgpr32'
body:             |
  bb.0:

    INLINEASM &"; def $0", 1 /* sideeffect attdialect */, 10 /* regdef */, implicit-def $agpr0
    %14:vgpr_32 = COPY killed $agpr0
    INLINEASM &"; def $0 $1 $2 $3 $4", 1 /* sideeffect attdialect */, 11534346 /* regdef:VReg_512 */, def %7, 10158090 /* regdef:VReg_256 */, def %8, 4784138 /* regdef:VReg_128 */, def %9, 3670026 /* regdef:VReg_96 */, def %10, 3670026 /* regdef:VReg_96 */, def %11
    INLINEASM &"; clobber", 1 /* sideeffect attdialect */, 12 /* clobber */, implicit-def dead early-clobber $agpr0_agpr1_agpr2_agpr3_agpr4_agpr5_agpr6_agpr7_agpr8_agpr9_agpr10_agpr11_agpr12_agpr13_agpr14_agpr15_agpr16_agpr17_agpr18_agpr19_agpr20_agpr21_agpr22_agpr23_agpr24_agpr25_agpr26_agpr27_agpr28_agpr29_agpr30_agpr31, 12 /* clobber */, implicit-def dead early-clobber $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15_vgpr16_vgpr17_vgpr18_vgpr19_vgpr20_vgpr21_vgpr22_vgpr23_vgpr24_vgpr25_vgpr26_vgpr27_vgpr28_vgpr29_vgpr30_vgpr31
    INLINEASM &"; use $0", 1 /* sideeffect attdialect */, 11534345 /* reguse:VReg_512 */, %7
    INLINEASM &"; use $0", 1 /* sideeffect attdialect */, 10158089 /* reguse:VReg_256 */, %8
    INLINEASM &"; use $0", 1 /* sideeffect attdialect */, 4784137 /* reguse:VReg_128 */, %9
    INLINEASM &"; use $0", 1 /* sideeffect attdialect */, 3670025 /* reguse:VReg_96 */, %10
    INLINEASM &"; use $0", 1 /* sideeffect attdialect */, 3670025 /* reguse:VReg_96 */, %11
    $agpr1 = COPY %14
    INLINEASM &"; use $0", 1 /* sideeffect attdialect */, 9 /* reguse */, killed $agpr1
    SI_RETURN

...