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# RUN: llc -mtriple=amdgcn-amd-amdhsa -verify-machineinstrs -stress-regalloc=3 -run-pass=greedy,virtregrewriter,stack-slot-coloring -o - %s | FileCheck -check-prefixes=SHARE,GCN %s
# RUN: llc -mtriple=amdgcn-amd-amdhsa -verify-machineinstrs -stress-regalloc=3 -run-pass=greedy,virtregrewriter,stack-slot-coloring -no-stack-slot-sharing -o - %s | FileCheck -check-prefixes=NOSHARE,GCN %s

# -run-pass is used to artifically avoid using split register allocation, which would avoid stressing StackSlotColoring.


# Make sure that stack slot coloring doesn't try to merge frame
# indexes used for SGPR spilling with those that aren't.
# Even when stack slot sharing was disabled, it was still moving the
# FI ID used for an SGPR spill to a normal frame index.

--- |

  define void @sgpr_spill_wrong_stack_id(float addrspace(1)* nocapture readnone %arg, float addrspace(1)* noalias %arg1) {
  bb:
    %tmp = load i32, i32 addrspace(1)* null, align 4
    call void @func(i32 undef)
    call void @func(i32 %tmp)
    unreachable
  }

  declare void @func(i32)

...
---

# GCN-LABEL: name:            sgpr_spill_wrong_stack_id
# SHARE: stack:
# SHARE:   - { id: 0, name: '', type: spill-slot, offset: 0, size: 4, alignment: 4,
# SHARE:       stack-id: default, callee-saved-register: '', callee-saved-restored: true,
# SHARE:       debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
# SHARE:   - { id: 1, name: '', type: spill-slot, offset: 0, size: 8, alignment: 4,
# SHARE:       stack-id: sgpr-spill, callee-saved-register: '', callee-saved-restored: true,
# SHARE:       debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
# SHARE:   - { id: 2, name: '', type: spill-slot, offset: 0, size: 4, alignment: 4,
# SHARE:       stack-id: sgpr-spill, callee-saved-register: '', callee-saved-restored: true,
# SHARE:       debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }

# SHARE: SI_SPILL_S32_SAVE $sgpr32, %stack.2, implicit $exec, implicit $sgpr32 :: (store (s32) into %stack.2, addrspace 5)
# SHARE: SI_SPILL_V32_SAVE killed $vgpr0, %stack.0, $sgpr32, 0, implicit $exec :: (store (s32) into %stack.0, addrspace 5)
# SHARE: SI_SPILL_S64_SAVE killed renamable $sgpr4_sgpr5, %stack.1, implicit $exec, implicit $sgpr32 :: (store (s64) into %stack.1, align 4, addrspace 5)
# SHARE: renamable $sgpr4_sgpr5 = SI_SPILL_S64_RESTORE %stack.1, implicit $exec, implicit $sgpr32 :: (load (s64) from %stack.1, align 4, addrspace 5)
# SHARE: dead $sgpr30_sgpr31 = SI_CALL killed renamable $sgpr4_sgpr5, @func, csr_amdgpu, implicit undef $vgpr0
# SHARE: $sgpr32 = SI_SPILL_S32_RESTORE %stack.2, implicit $exec, implicit $sgpr32 :: (load (s32) from %stack.2, addrspace 5)
# SHARE: $vgpr0 = SI_SPILL_V32_RESTORE %stack.0, $sgpr32, 0, implicit $exec :: (load (s32) from %stack.0, addrspace 5)
# SHARE: renamable $sgpr4_sgpr5 = SI_SPILL_S64_RESTORE %stack.1, implicit $exec, implicit $sgpr32 :: (load (s64) from %stack.1, align 4, addrspace 5)
# SHARE: dead $sgpr30_sgpr31 = SI_CALL killed renamable $sgpr4_sgpr5, @func, csr_amdgpu, implicit $vgpr0
# SHARE:  $sgpr32 = SI_SPILL_S32_RESTORE %stack.2, implicit $exec, implicit $sgpr32 :: (load (s32) from %stack.2, addrspace 5)

# NOSHARE: stack:
# NOSHARE: - { id: 0, name: '', type: spill-slot, offset: 0, size: 4, alignment: 4,
# NOSHARE: stack-id: default, callee-saved-register: '', callee-saved-restored: true,
# NOSHARE: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
# NOSHARE: - { id: 1, name: '', type: spill-slot, offset: 0, size: 8, alignment: 4,
# NOSHARE: stack-id: sgpr-spill, callee-saved-register: '', callee-saved-restored: true,
# NOSHARE: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
# NOSHARE: - { id: 2, name: '', type: spill-slot, offset: 0, size: 4, alignment: 4,
# NOSHARE: stack-id: sgpr-spill, callee-saved-register: '', callee-saved-restored: true,
# NOSHARE: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
# NOSHARE: - { id: 3, name: '', type: spill-slot, offset: 0, size: 4, alignment: 4,
# NOSHARE: stack-id: sgpr-spill, callee-saved-register: '', callee-saved-restored: true,
# NOSHARE: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }

# NOSHARE: SI_SPILL_S32_SAVE $sgpr32, %stack.2, implicit $exec, implicit $sgpr32 :: (store (s32) into %stack.2, addrspace 5)
# NOSHARE: SI_SPILL_V32_SAVE killed $vgpr0, %stack.0, $sgpr32, 0, implicit $exec :: (store (s32) into %stack.0, addrspace 5)
# NOSHARE: SI_SPILL_S64_SAVE killed renamable $sgpr4_sgpr5, %stack.1, implicit $exec, implicit $sgpr32 :: (store (s64) into %stack.1, align 4, addrspace 5)
# NOSHARE: renamable $sgpr4_sgpr5 = SI_SPILL_S64_RESTORE %stack.1, implicit $exec, implicit $sgpr32 :: (load (s64) from %stack.1, align 4, addrspace 5)
# NOSHARE: dead $sgpr30_sgpr31 = SI_CALL killed renamable $sgpr4_sgpr5, @func, csr_amdgpu, implicit undef $vgpr0
# NOSHARE: $sgpr32 = SI_SPILL_S32_RESTORE %stack.2, implicit $exec, implicit $sgpr32 :: (load (s32) from %stack.2, addrspace 5)
# NOSHARE: SI_SPILL_S32_SAVE $sgpr32, %stack.3, implicit $exec, implicit $sgpr32 :: (store (s32) into %stack.3, addrspace 5)
# NOSHARE: $vgpr0 = SI_SPILL_V32_RESTORE %stack.0, $sgpr32, 0, implicit $exec :: (load (s32) from %stack.0, addrspace 5)
# NOSHARE: renamable $sgpr4_sgpr5 = SI_SPILL_S64_RESTORE %stack.1, implicit $exec, implicit $sgpr32 :: (load (s64) from %stack.1, align 4, addrspace 5)
# NOSHARE: dead $sgpr30_sgpr31 = SI_CALL killed renamable $sgpr4_sgpr5, @func, csr_amdgpu, implicit $vgpr0
# NOSHARE: $sgpr32 = SI_SPILL_S32_RESTORE %stack.3, implicit $exec, implicit $sgpr32 :: (load (s32) from %stack.3, addrspace 5)

...

name:            sgpr_spill_wrong_stack_id
tracksRegLiveness: true
frameInfo:
  hasCalls:        true
machineFunctionInfo:
  scratchRSrcReg: $sgpr0_sgpr1_sgpr2_sgpr3
  frameOffsetReg: $sgpr32
  stackPtrOffsetReg: $sgpr32
body:             |
  bb.0:
    %0:sreg_32_xm0 = COPY $sgpr32
    %1:vreg_64 = IMPLICIT_DEF
    %2:vgpr_32 = FLAT_LOAD_DWORD %1, 0, 0, implicit $exec, implicit $flat_scr
    %3:sreg_64 = SI_PC_ADD_REL_OFFSET target-flags(amdgpu-rel32-lo) @func + 4, target-flags(amdgpu-rel32-hi) @func + 4, implicit-def dead $scc
    ADJCALLSTACKUP 0, 0, implicit-def $scc, implicit-def $sgpr32, implicit $sgpr32, implicit $sgpr32
    dead $sgpr30_sgpr31 = SI_CALL %3, @func, csr_amdgpu, implicit undef $vgpr0
    $sgpr32 = COPY %0
    %4:sreg_32_xm0 = COPY $sgpr32
    ADJCALLSTACKDOWN 0, 0, implicit-def $scc, implicit-def $sgpr32, implicit $sgpr32, implicit $sgpr32
    ADJCALLSTACKUP 0, 0, implicit-def $scc, implicit-def $sgpr32, implicit $sgpr32, implicit $sgpr32
    $vgpr0 = COPY %2
    dead $sgpr30_sgpr31 = SI_CALL %3, @func, csr_amdgpu, implicit killed $vgpr0
    $sgpr32 = COPY %4
    ADJCALLSTACKDOWN 0, 0, implicit-def $scc, implicit-def $sgpr32, implicit $sgpr32, implicit $sgpr32

...