# RUN: llc -O0 -run-pass=avr-expand-pseudo -verify-machineinstrs %s -o - | FileCheck %s

--- |
  target triple = "avr--"
  define void @test() {
  entry:
    ret void
  }
...

---
name:            test
body: |
  bb.0.entry:

    ; CHECK-LABEL: test

    ; Small displacement (<63):
    ; CHECK:      STDPtrQRr $r29r28, 3, $r0
    ; CHECK-NEXT: STDPtrQRr $r29r28, 4, $r1
    STDWPtrQRr $r29r28, 3, $r1r0

    ; Small displacement where the destination register is killed:
    ; CHECK:      STDPtrQRr $r29r28, 3, $r0
    ; CHECK-NEXT: STDPtrQRr killed $r29r28, 4, $r1
    STDWPtrQRr killed $r29r28, 3, $r1r0

    ; Small displacement where the source register is killed:
    ; CHECK:      STDPtrQRr $r29r28, 3, killed $r0
    ; CHECK-NEXT: STDPtrQRr $r29r28, 4, killed $r1
    STDWPtrQRr $r29r28, 3, killed $r1r0

    ; Small displacement, near the limit (=62):
    ; CHECK:      STDPtrQRr $r29r28, 62, $r0
    ; CHECK-NEXT: STDPtrQRr $r29r28, 63, $r1
    STDWPtrQRr $r29r28, 62, $r1r0

    ; Large displacement (>=63):
    ; CHECK: PUSHRr $r28, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: PUSHRr $r29, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $r28 = SUBIRdK killed $r28, 193, implicit-def $sreg
    ; CHECK-NEXT: $r29 = SBCIRdK killed $r29, 255, implicit-def $sreg, implicit killed $sreg
    ; CHECK-NEXT: STPtrRr $r29r28, $r0
    ; CHECK-NEXT: STDPtrQRr $r29r28, 1, $r1
    ; CHECK-NEXT: $r29 = POPRd implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $r28 = POPRd implicit-def $sp, implicit $sp
    STDWPtrQRr $r29r28, 63, $r1r0

    ; Large displacement where the destination register is killed:
    ; CHECK: $r28 = SUBIRdK killed $r28, 193, implicit-def $sreg
    ; CHECK-NEXT: $r29 = SBCIRdK killed $r29, 255, implicit-def $sreg, implicit killed $sreg
    ; CHECK-NEXT: STPtrRr $r29r28, $r0
    ; CHECK-NEXT: STDPtrQRr $r29r28, 1, $r1
    STDWPtrQRr killed $r29r28, 63, $r1r0

    ; Large displacement where the source register is killed:
    ; CHECK: PUSHRr $r28, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: PUSHRr $r29, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $r28 = SUBIRdK killed $r28, 193, implicit-def $sreg
    ; CHECK-NEXT: $r29 = SBCIRdK killed $r29, 255, implicit-def $sreg, implicit killed $sreg
    ; CHECK-NEXT: STPtrRr $r29r28, killed $r0
    ; CHECK-NEXT: STDPtrQRr $r29r28, 1, killed $r1
    ; CHECK-NEXT: $r29 = POPRd implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $r28 = POPRd implicit-def $sp, implicit $sp
    STDWPtrQRr $r29r28, 63, killed $r1r0
...