test/CodeGen/AArch64/reg-scavenge-frame.mir

# RUN: llc -run-pass=prologepilog -verify-machineinstrs %s -o - | FileCheck %s

--- |
  target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
  target triple = "aarch64-linux-gnu"
  define void @ScavengeForFrameWithoutOffset() { ret void }
...
---
name:            ScavengeForFrameWithoutOffset
tracksRegLiveness: true
stack:
  - { id: 0, type: spill-slot, offset: 0, size: 32, alignment: 8 }
body:             |
  bb.0:
    liveins: $d16_d17_d18_d19
    $x0 = COPY $xzr
    $x1 = COPY $xzr
    $x2 = COPY $xzr
    $x3 = COPY $xzr
    $x4 = COPY $xzr
    $x5 = COPY $xzr
    $x6 = COPY $xzr
    $x7 = COPY $xzr
    $x8 = COPY $xzr
    $x9 = COPY $xzr
    $x10 = COPY $xzr
    $x11 = COPY $xzr
    $x12 = COPY $xzr
    $x13 = COPY $xzr
    $x14 = COPY $xzr
    $x15 = COPY $xzr
    $x16 = COPY $xzr
    $x17 = COPY $xzr
    $x18 = COPY $xzr
    $x19 = COPY $xzr
    $x20 = COPY $xzr
    $x21 = COPY $xzr
    $x22 = COPY $xzr
    $x23 = COPY $xzr
    $x24 = COPY $xzr
    $x25 = COPY $xzr
    $x26 = COPY $xzr
    $x27 = COPY $xzr
    $x28 = COPY $xzr
    $fp = COPY $xzr
    $lr = COPY $xzr
    ST1Fourv1d killed $d16_d17_d18_d19, %stack.0 :: (store 32 into %stack.0, align 8)
    ; CHECK:  STRXui killed $[[SCAVREG:x[0-9]+|fp|lr]], $sp, [[SPOFFSET:[0-9]+]] :: (store 8 into %stack.1)
    ; CHECK-NEXT:  $[[SCAVREG]] = ADDXri $sp, {{[0-9]+}}, 0
    ; CHECK-NEXT:  ST1Fourv1d killed $d16_d17_d18_d19, killed $[[SCAVREG]] :: (store 32 into %stack.0, align 8)
    ; CHECK-NEXT:  $[[SCAVREG]] = LDRXui $sp, [[SPOFFSET]] :: (load 8 from %stack.1)

    HINT 0, implicit $x0
    HINT 0, implicit $x1
    HINT 0, implicit $x2
    HINT 0, implicit $x3
    HINT 0, implicit $x4
    HINT 0, implicit $x5
    HINT 0, implicit $x6
    HINT 0, implicit $x7
    HINT 0, implicit $x8
    HINT 0, implicit $x9
    HINT 0, implicit $x10
    HINT 0, implicit $x11
    HINT 0, implicit $x12
    HINT 0, implicit $x13
    HINT 0, implicit $x14
    HINT 0, implicit $x15
    HINT 0, implicit $x16
    HINT 0, implicit $x17
    HINT 0, implicit $x18
    HINT 0, implicit $x19
    HINT 0, implicit $x20
    HINT 0, implicit $x21
    HINT 0, implicit $x22
    HINT 0, implicit $x23
    HINT 0, implicit $x24
    HINT 0, implicit $x25
    HINT 0, implicit $x26
    HINT 0, implicit $x27
    HINT 0, implicit $x28
    HINT 0, implicit $fp
    HINT 0, implicit $lr

    RET_ReallyLR
...