# RUN: llc -mtriple=aarch64-linux-gnu -run-pass=greedy %s -o - | FileCheck %s
# RUN: llc -mtriple=aarch64-linux-gnu -start-before=greedy -stop-after=aarch64-expand-pseudo %s -o - | FileCheck %s --check-prefix=EXPAND
--- |
  ; ModuleID = '<stdin>'
  source_filename = "<stdin>"
  target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
  target triple = "aarch64--linux-gnu"

  define aarch64_sve_vector_pcs void @spills_fills_stack_id_ppr() #0 { entry: unreachable }
  define aarch64_sve_vector_pcs void @spills_fills_stack_id_ppr2() #0 { entry: unreachable }
  define aarch64_sve_vector_pcs void @spills_fills_stack_id_ppr2mul2() #0 { entry: unreachable }
  define aarch64_sve_vector_pcs void @spills_fills_stack_id_pnr() #1 { entry: unreachable }
  define aarch64_sve_vector_pcs void @spills_fills_stack_id_virtreg_pnr() #1 { entry: unreachable }
  define aarch64_sve_vector_pcs void @spills_fills_stack_id_zpr() #0 { entry: unreachable }
  define aarch64_sve_vector_pcs void @spills_fills_stack_id_zpr2() #0 { entry: unreachable }
  define aarch64_sve_vector_pcs void @spills_fills_stack_id_zpr2strided() #0 { entry: unreachable }
  define aarch64_sve_vector_pcs void @spills_fills_stack_id_zpr3() #0 { entry: unreachable }
  define aarch64_sve_vector_pcs void @spills_fills_stack_id_zpr4() #0 { entry: unreachable }
  define aarch64_sve_vector_pcs void @spills_fills_stack_id_zpr4strided() #0 { entry: unreachable }

  attributes #0 = { nounwind "target-features"="+sve" }
  attributes #1 = { nounwind "target-features"="+sve2p1" }

...
---
name: spills_fills_stack_id_ppr
tracksRegLiveness: true
registers:
  - { id: 0, class: ppr }
stack:
liveins:
  - { reg: '$p0', virtual-reg: '%0' }
body:             |
  bb.0.entry:
    liveins: $p0

    ; CHECK-LABEL: name: spills_fills_stack_id_ppr
    ; CHECK: stack:
    ; CHECK:      - { id: 0, name: '', type: spill-slot, offset: 0, size: 2, alignment: 2
    ; CHECK-NEXT:     stack-id: scalable-vector, callee-saved-register: ''

    ; EXPAND-LABEL: name: spills_fills_stack_id_ppr
    ; EXPAND: STR_PXI $p0, $sp, 7
    ; EXPAND: $p0 = LDR_PXI $sp, 7

    %0:ppr = COPY $p0

    $p0 = IMPLICIT_DEF
    $p1 = IMPLICIT_DEF
    $p2 = IMPLICIT_DEF
    $p3 = IMPLICIT_DEF
    $p4 = IMPLICIT_DEF
    $p5 = IMPLICIT_DEF
    $p6 = IMPLICIT_DEF
    $p7 = IMPLICIT_DEF
    $p8 = IMPLICIT_DEF
    $p9 = IMPLICIT_DEF
    $p10 = IMPLICIT_DEF
    $p11 = IMPLICIT_DEF
    $p12 = IMPLICIT_DEF
    $p13 = IMPLICIT_DEF
    $p14 = IMPLICIT_DEF
    $p15 = IMPLICIT_DEF

    $p0 = COPY %0
    RET_ReallyLR
...
---
name: spills_fills_stack_id_ppr2
tracksRegLiveness: true
registers:
  - { id: 0, class: ppr2 }
stack:
liveins:
  - { reg: '$p0_p1', virtual-reg: '%0' }
body:             |
  bb.0.entry:
    liveins: $p0_p1

    ; CHECK-LABEL: name: spills_fills_stack_id_ppr2
    ; CHECK: stack:
    ; CHECK:      - { id: 0, name: '', type: spill-slot, offset: 0, size: 4, alignment: 2
    ; CHECK-NEXT:     stack-id: scalable-vector, callee-saved-register: ''

    ; EXPAND-LABEL: name: spills_fills_stack_id_ppr2
    ; EXPAND: STR_PXI $p0, $sp, 6
    ; EXPAND: STR_PXI $p1, $sp, 7
    ; EXPAND: $p0 = LDR_PXI $sp, 6
    ; EXPAND: $p1 = LDR_PXI $sp, 7

    %0:ppr2 = COPY $p0_p1

    $p0 = IMPLICIT_DEF
    $p1 = IMPLICIT_DEF
    $p2 = IMPLICIT_DEF
    $p3 = IMPLICIT_DEF
    $p4 = IMPLICIT_DEF
    $p5 = IMPLICIT_DEF
    $p6 = IMPLICIT_DEF
    $p7 = IMPLICIT_DEF
    $p8 = IMPLICIT_DEF
    $p9 = IMPLICIT_DEF
    $p10 = IMPLICIT_DEF
    $p11 = IMPLICIT_DEF
    $p12 = IMPLICIT_DEF
    $p13 = IMPLICIT_DEF
    $p14 = IMPLICIT_DEF
    $p15 = IMPLICIT_DEF

    $p0_p1 = COPY %0
    RET_ReallyLR
...
---
name: spills_fills_stack_id_ppr2mul2
tracksRegLiveness: true
registers:
  - { id: 0, class: ppr2mul2 }
stack:
liveins:
  - { reg: '$p0_p1', virtual-reg: '%0' }
body:             |
  bb.0.entry:
    liveins: $p0_p1

    ; CHECK-LABEL: name: spills_fills_stack_id_ppr2
    ; CHECK: stack:
    ; CHECK:      - { id: 0, name: '', type: spill-slot, offset: 0, size: 4, alignment: 2
    ; CHECK-NEXT:     stack-id: scalable-vector, callee-saved-register: ''

    ; EXPAND-LABEL: name: spills_fills_stack_id_ppr2mul2
    ; EXPAND: STR_PXI $p0, $sp, 6
    ; EXPAND: STR_PXI $p1, $sp, 7
    ; EXPAND: $p0 = LDR_PXI $sp, 6
    ; EXPAND: $p1 = LDR_PXI $sp, 7

    %0:ppr2mul2 = COPY $p0_p1

    $p0 = IMPLICIT_DEF
    $p1 = IMPLICIT_DEF
    $p2 = IMPLICIT_DEF
    $p3 = IMPLICIT_DEF
    $p4 = IMPLICIT_DEF
    $p5 = IMPLICIT_DEF
    $p6 = IMPLICIT_DEF
    $p7 = IMPLICIT_DEF
    $p8 = IMPLICIT_DEF
    $p9 = IMPLICIT_DEF
    $p10 = IMPLICIT_DEF
    $p11 = IMPLICIT_DEF
    $p12 = IMPLICIT_DEF
    $p13 = IMPLICIT_DEF
    $p14 = IMPLICIT_DEF
    $p15 = IMPLICIT_DEF

    $p0_p1 = COPY %0
    RET_ReallyLR
...
---
name: spills_fills_stack_id_pnr
tracksRegLiveness: true
registers:
  - { id: 0, class: pnr }
stack:
liveins:
  - { reg: '$pn0', virtual-reg: '%0' }
body:             |
  bb.0.entry:
    liveins: $pn0

    ; CHECK-LABEL: name: spills_fills_stack_id_pnr
    ; CHECK: stack:
    ; CHECK:      - { id: 0, name: '', type: spill-slot, offset: 0, size: 2, alignment: 2
    ; CHECK-NEXT:     stack-id: scalable-vector, callee-saved-register: ''

    ; EXPAND-LABEL: name: spills_fills_stack_id_pnr
    ; EXPAND: STR_PXI $p0, $sp, 7
    ; EXPAND: $p0 = LDR_PXI $sp, 7, implicit-def $pn0

    %0:pnr = COPY $pn0

    $pn0 = IMPLICIT_DEF
    $pn1 = IMPLICIT_DEF
    $pn2 = IMPLICIT_DEF
    $pn3 = IMPLICIT_DEF
    $pn4 = IMPLICIT_DEF
    $pn5 = IMPLICIT_DEF
    $pn6 = IMPLICIT_DEF
    $pn7 = IMPLICIT_DEF
    $pn8 = IMPLICIT_DEF
    $pn9 = IMPLICIT_DEF
    $pn10 = IMPLICIT_DEF
    $pn11 = IMPLICIT_DEF
    $pn12 = IMPLICIT_DEF
    $pn13 = IMPLICIT_DEF
    $pn14 = IMPLICIT_DEF
    $pn15 = IMPLICIT_DEF

    $pn0 = COPY %0
    RET_ReallyLR
...
---
name: spills_fills_stack_id_virtreg_pnr
tracksRegLiveness: true
registers:
  - { id: 0, class: pnr_p8to15 }
stack:
body:             |
  bb.0.entry:
    ; CHECK-LABEL: name: spills_fills_stack_id_virtreg_pnr
    ; CHECK: stack:
    ; CHECK:      - { id: 0, name: '', type: spill-slot, offset: 0, size: 2, alignment: 2
    ; CHECK-NEXT:     stack-id: scalable-vector, callee-saved-register: ''

    ; EXPAND-LABEL: name: spills_fills_stack_id_virtreg_pnr
    ; EXPAND: renamable $pn8 = WHILEGE_CXX_B
    ; EXPAND: $p0 = ORR_PPzPP $p8, $p8, killed $p8
    ; EXPAND: STR_PXI killed renamable $p0, $sp, 7
    ;
    ; EXPAND: renamable $p0 = LDR_PXI $sp, 7
    ; EXPAND: $p8 = ORR_PPzPP $p0, $p0, killed $p0, implicit-def $pn8
    ; EXPAND: $p0 = PEXT_PCI_B killed renamable $pn8, 0


    %0:pnr_p8to15 = WHILEGE_CXX_B undef $x0, undef $x0, 0, implicit-def dead $nzcv

    $pn0 = IMPLICIT_DEF
    $pn1 = IMPLICIT_DEF
    $pn2 = IMPLICIT_DEF
    $pn3 = IMPLICIT_DEF
    $pn4 = IMPLICIT_DEF
    $pn5 = IMPLICIT_DEF
    $pn6 = IMPLICIT_DEF
    $pn7 = IMPLICIT_DEF
    $pn8 = IMPLICIT_DEF
    $pn9 = IMPLICIT_DEF
    $pn10 = IMPLICIT_DEF
    $pn11 = IMPLICIT_DEF
    $pn12 = IMPLICIT_DEF
    $pn13 = IMPLICIT_DEF
    $pn14 = IMPLICIT_DEF
    $pn15 = IMPLICIT_DEF

    $p0 = PEXT_PCI_B %0, 0
    RET_ReallyLR
...
---
name: spills_fills_stack_id_zpr
tracksRegLiveness: true
registers:
  - { id: 0, class: zpr }
stack:
liveins:
  - { reg: '$z0', virtual-reg: '%0' }
body:             |
  bb.0.entry:
    liveins: $z0

    ; CHECK-LABEL: name: spills_fills_stack_id_zpr
    ; CHECK: stack:
    ; CHECK:      - { id: 0, name: '', type: spill-slot, offset: 0, size: 16, alignment: 16
    ; CHECK-NEXT:     stack-id: scalable-vector, callee-saved-register: ''

    ; EXPAND-LABEL: name: spills_fills_stack_id_zpr
    ; EXPAND: STR_ZXI $z0, $sp, 0
    ; EXPAND: $z0 = LDR_ZXI $sp, 0

    %0:zpr = COPY $z0

    $z0_z1_z2_z3     = IMPLICIT_DEF
    $z4_z5_z6_z7     = IMPLICIT_DEF
    $z8_z9_z10_z11   = IMPLICIT_DEF
    $z12_z13_z14_z15 = IMPLICIT_DEF
    $z16_z17_z18_z19 = IMPLICIT_DEF
    $z20_z21_z22_z23 = IMPLICIT_DEF
    $z24_z25_z26_z27 = IMPLICIT_DEF
    $z28_z29_z30_z31 = IMPLICIT_DEF

    $z0 = COPY %0
    RET_ReallyLR
...
---
name: spills_fills_stack_id_zpr2
tracksRegLiveness: true
registers:
  - { id: 0, class: zpr2 }
stack:
liveins:
  - { reg: '$z0_z1', virtual-reg: '%0' }
body:             |
  bb.0.entry:
    liveins: $z0_z1

    ; CHECK-LABEL: name: spills_fills_stack_id_zpr2
    ; CHECK: stack:
    ; CHECK:      - { id: 0, name: '', type: spill-slot, offset: 0, size: 32, alignment: 16
    ; CHECK-NEXT:     stack-id: scalable-vector

    ; EXPAND-LABEL: name: spills_fills_stack_id_zpr2
    ; EXPAND: STR_ZXI $z0, $sp, 0
    ; EXPAND: STR_ZXI $z1, $sp, 1
    ; EXPAND: $z0 = LDR_ZXI $sp, 0
    ; EXPAND: $z1 = LDR_ZXI $sp, 1

    %0:zpr2 = COPY $z0_z1

    $z0_z1_z2_z3     = IMPLICIT_DEF
    $z4_z5_z6_z7     = IMPLICIT_DEF
    $z8_z9_z10_z11   = IMPLICIT_DEF
    $z12_z13_z14_z15 = IMPLICIT_DEF
    $z16_z17_z18_z19 = IMPLICIT_DEF
    $z20_z21_z22_z23 = IMPLICIT_DEF
    $z24_z25_z26_z27 = IMPLICIT_DEF
    $z28_z29_z30_z31 = IMPLICIT_DEF

    $z0_z1 = COPY %0
    RET_ReallyLR
...
---
name: spills_fills_stack_id_zpr2strided
tracksRegLiveness: true
registers:
  - { id: 0, class: zpr2strided }
stack:
liveins:
  - { reg: '$z0_z8', virtual-reg: '%0' }
body:             |
  bb.0.entry:
    liveins: $z0_z1
    successors: %bb.1

    $z0_z8 = COPY $z0_z1

    B %bb.1

  bb.1:
    liveins: $z0_z8

    ; CHECK-LABEL: name: spills_fills_stack_id_zpr2strided
    ; CHECK: stack:
    ; CHECK:      - { id: 0, name: '', type: spill-slot, offset: 0, size: 32, alignment: 16
    ; CHECK-NEXT:     stack-id: scalable-vector

    ; EXPAND-LABEL: name: spills_fills_stack_id_zpr2strided
    ; EXPAND: STR_ZXI $z0, $sp, 0
    ; EXPAND: STR_ZXI $z8, $sp, 1
    ; EXPAND: $z0 = LDR_ZXI $sp, 0
    ; EXPAND: $z8 = LDR_ZXI $sp, 1

    %0:zpr2strided = COPY $z0_z8

    $z0_z1_z2_z3     = IMPLICIT_DEF
    $z4_z5_z6_z7     = IMPLICIT_DEF
    $z8_z9_z10_z11   = IMPLICIT_DEF
    $z12_z13_z14_z15 = IMPLICIT_DEF
    $z16_z17_z18_z19 = IMPLICIT_DEF
    $z20_z21_z22_z23 = IMPLICIT_DEF
    $z24_z25_z26_z27 = IMPLICIT_DEF
    $z28_z29_z30_z31 = IMPLICIT_DEF

    $z0_z8 = COPY %0
    RET_ReallyLR
...
---
name: spills_fills_stack_id_zpr3
tracksRegLiveness: true
registers:
  - { id: 0, class: zpr3 }
stack:
liveins:
  - { reg: '$z0_z1_z2', virtual-reg: '%0' }
body:             |
  bb.0.entry:
    liveins: $z0_z1_z2

    ; CHECK-LABEL: name: spills_fills_stack_id_zpr3
    ; CHECK: stack:
    ; CHECK:      - { id: 0, name: '', type: spill-slot, offset: 0, size: 48, alignment: 16
    ; CHECK-NEXT:     stack-id: scalable-vector

    ; EXPAND-LABEL: name: spills_fills_stack_id_zpr3
    ; EXPAND: STR_ZXI $z0, $sp, 0
    ; EXPAND: STR_ZXI $z1, $sp, 1
    ; EXPAND: STR_ZXI $z2, $sp, 2
    ; EXPAND: $z0 = LDR_ZXI $sp, 0
    ; EXPAND: $z1 = LDR_ZXI $sp, 1
    ; EXPAND: $z2 = LDR_ZXI $sp, 2

    %0:zpr3 = COPY $z0_z1_z2

    $z0_z1_z2_z3     = IMPLICIT_DEF
    $z4_z5_z6_z7     = IMPLICIT_DEF
    $z8_z9_z10_z11   = IMPLICIT_DEF
    $z12_z13_z14_z15 = IMPLICIT_DEF
    $z16_z17_z18_z19 = IMPLICIT_DEF
    $z20_z21_z22_z23 = IMPLICIT_DEF
    $z24_z25_z26_z27 = IMPLICIT_DEF
    $z28_z29_z30_z31 = IMPLICIT_DEF

    $z0_z1_z2 = COPY %0
    RET_ReallyLR
...
---
name: spills_fills_stack_id_zpr4
tracksRegLiveness: true
registers:
  - { id: 0, class: zpr4 }
stack:
liveins:
  - { reg: '$z0_z1_z2_z3', virtual-reg: '%0' }
body:             |
  bb.0.entry:
    liveins: $z0_z1_z2_z3

    ; CHECK-LABEL: name: spills_fills_stack_id_zpr4
    ; CHECK: stack:
    ; CHECK:      - { id: 0, name: '', type: spill-slot, offset: 0, size: 64, alignment: 16
    ; CHECK-NEXT:     stack-id: scalable-vector

    ; EXPAND-LABEL: name: spills_fills_stack_id_zpr4
    ; EXPAND: STR_ZXI $z0, $sp, 0
    ; EXPAND: STR_ZXI $z1, $sp, 1
    ; EXPAND: STR_ZXI $z2, $sp, 2
    ; EXPAND: STR_ZXI $z3, $sp, 3
    ; EXPAND: $z0 = LDR_ZXI $sp, 0
    ; EXPAND: $z1 = LDR_ZXI $sp, 1
    ; EXPAND: $z2 = LDR_ZXI $sp, 2
    ; EXPAND: $z3 = LDR_ZXI $sp, 3

    %0:zpr4 = COPY $z0_z1_z2_z3

    $z0_z1_z2_z3     = IMPLICIT_DEF
    $z4_z5_z6_z7     = IMPLICIT_DEF
    $z8_z9_z10_z11   = IMPLICIT_DEF
    $z12_z13_z14_z15 = IMPLICIT_DEF
    $z16_z17_z18_z19 = IMPLICIT_DEF
    $z20_z21_z22_z23 = IMPLICIT_DEF
    $z24_z25_z26_z27 = IMPLICIT_DEF
    $z28_z29_z30_z31 = IMPLICIT_DEF

    $z0_z1_z2_z3 = COPY %0
    RET_ReallyLR
...
---
name: spills_fills_stack_id_zpr4strided
tracksRegLiveness: true
registers:
  - { id: 0, class: zpr4strided }
stack:
liveins:
  - { reg: '$z0_z4_z8_z12', virtual-reg: '%0' }
body:             |
  bb.0.entry:
    liveins: $z0_z1_z2_z3

    $z0_z4_z8_z12 = COPY $z0_z1_z2_z3

    B %bb.1

  bb.1:
    liveins: $z0_z4_z8_z12

    ; CHECK-LABEL: name: spills_fills_stack_id_zpr4strided
    ; CHECK: stack:
    ; CHECK:      - { id: 0, name: '', type: spill-slot, offset: 0, size: 64, alignment: 16
    ; CHECK-NEXT:     stack-id: scalable-vector

    ; EXPAND-LABEL: name: spills_fills_stack_id_zpr4strided
    ; EXPAND: STR_ZXI $z0, $sp, 0
    ; EXPAND: STR_ZXI $z4, $sp, 1
    ; EXPAND: STR_ZXI $z8, $sp, 2
    ; EXPAND: STR_ZXI $z12, $sp, 3
    ; EXPAND: $z0 = LDR_ZXI $sp, 0
    ; EXPAND: $z4 = LDR_ZXI $sp, 1
    ; EXPAND: $z8 = LDR_ZXI $sp, 2
    ; EXPAND: $z12 = LDR_ZXI $sp, 3

    %0:zpr4strided = COPY $z0_z4_z8_z12

    $z0_z1_z2_z3     = IMPLICIT_DEF
    $z4_z5_z6_z7     = IMPLICIT_DEF
    $z8_z9_z10_z11   = IMPLICIT_DEF
    $z12_z13_z14_z15 = IMPLICIT_DEF
    $z16_z17_z18_z19 = IMPLICIT_DEF
    $z20_z21_z22_z23 = IMPLICIT_DEF
    $z24_z25_z26_z27 = IMPLICIT_DEF
    $z28_z29_z30_z31 = IMPLICIT_DEF

    $z0_z4_z8_z12 = COPY %0
    RET_ReallyLR
...