# RUN: llc -o - -run-pass=machine-scheduler -misched=shuffle %s | FileCheck %s
# RUN: llc -o - -passes=machine-scheduler -misched=shuffle %s | FileCheck %s
# RUN: llc -o - -run-pass=postmisched %s | FileCheck %s
# RUN: llc -o - -passes=postmisched %s | FileCheck %s

# REQUIRES: asserts
# -misched=shuffle is only available with assertions enabled

--- |
  target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"
  target triple = "thumbv8.1m.main-arm-none-eabi"

  define i32 @foo_bti() #0 {
  entry:
    ret i32 0
  }

  define i32 @foo_pac() #0 {
  entry:
    ret i32 0
  }

  define i32 @foo_pacbti() #0 {
  entry:
    ret i32 0
  }

  define i32 @foo_setjmp() #0 {
  entry:
    ret i32 0
  if.then:
    ret i32 0
  }

  define i32 @foo_sg() #0 {
  entry:
    ret i32 0
  }

  declare i32 @setjmp(ptr noundef) #1
  declare void @longjmp(ptr noundef, i32 noundef) #2

  attributes #0 = { "frame-pointer"="all" "target-cpu"="cortex-m55" "target-features"="+armv8.1-m.main" }
  attributes #1 = { nounwind returns_twice "frame-pointer"="all" "target-cpu"="cortex-m55" "target-features"="+armv8.1-m.main" }
  attributes #2 = { noreturn nounwind "frame-pointer"="all" "target-cpu"="cortex-m55" "target-features"="+armv8.1-m.main" }

...
---
name:            foo_bti
tracksRegLiveness: true
body:             |
  bb.0.entry:
    liveins: $r0

    t2BTI
    renamable $r0, dead $cpsr = nsw tADDi8 killed renamable $r0, 1, 14 /* CC::al */, $noreg
    tBX_RET 14 /* CC::al */, $noreg, implicit killed $r0

...

# CHECK-LABEL: name:            foo_bti
# CHECK:       body:
# CHECK-NEXT:   bb.0.entry:
# CHECK-NEXT:     liveins: $r0
# CHECK-NEXT:     {{^ +$}}
# CHECK-NEXT:     t2BTI

---
name:            foo_pac
tracksRegLiveness: true
body:             |
  bb.0.entry:
    liveins: $r0, $lr, $r12

    frame-setup t2PAC implicit-def $r12, implicit $lr, implicit $sp
    renamable $r2 = nsw t2ADDri $r0, 3, 14 /* CC::al */, $noreg, $noreg
    $sp = frame-setup t2STMDB_UPD $sp, 14 /* CC::al */, $noreg, killed $r7, killed $lr
    $r7 = frame-setup tMOVr killed $sp, 14 /* CC::al */, $noreg
    early-clobber $sp = frame-setup t2STR_PRE killed $r12, $sp, -4, 14 /* CC::al */, $noreg
    $r12, $sp = frame-destroy t2LDR_POST $sp, 4, 14 /* CC::al */, $noreg
    $sp = frame-destroy t2LDMIA_UPD $sp, 14 /* CC::al */, $noreg, def $r7, def $lr
    t2AUT implicit $r12, implicit $lr, implicit $sp
    tBX_RET 14 /* CC::al */, $noreg, implicit $r0

...

# CHECK-LABEL: name:            foo_pac
# CHECK:       body:
# CHECK-NEXT:    bb.0.entry:
# CHECK-NEXT:      liveins: $r0, $lr, $r12
# CHECK-NEXT:      {{^ +$}}
# CHECK-NEXT:      frame-setup t2PAC implicit-def $r12, implicit $lr, implicit $sp

---
name:            foo_pacbti
tracksRegLiveness: true
body:             |
  bb.0.entry:
    liveins: $r0, $lr, $r12

    frame-setup t2PACBTI implicit-def $r12, implicit $lr, implicit $sp
    renamable $r2 = nsw t2ADDri $r0, 3, 14 /* CC::al */, $noreg, $noreg
    $sp = frame-setup t2STMDB_UPD $sp, 14 /* CC::al */, $noreg, killed $r7, killed $lr
    $r7 = frame-setup tMOVr killed $sp, 14 /* CC::al */, $noreg
    early-clobber $sp = frame-setup t2STR_PRE killed $r12, $sp, -4, 14 /* CC::al */, $noreg
    $r12, $sp = frame-destroy t2LDR_POST $sp, 4, 14 /* CC::al */, $noreg
    $sp = frame-destroy t2LDMIA_UPD $sp, 14 /* CC::al */, $noreg, def $r7, def $lr
    t2AUT implicit $r12, implicit $lr, implicit $sp
    tBX_RET 14 /* CC::al */, $noreg, implicit $r0

...

# CHECK-LABEL: name:            foo_pacbti
# CHECK:       body:
# CHECK-NEXT:    bb.0.entry:
# CHECK-NEXT:      liveins: $r0, $lr, $r12
# CHECK-NEXT:      {{^ +$}}
# CHECK-NEXT:      frame-setup t2PACBTI implicit-def $r12, implicit $lr, implicit $sp

---
name:            foo_setjmp
tracksRegLiveness: true
body:             |
  bb.0.entry:
    successors: %bb.1
    liveins: $lr

    frame-setup tPUSH 14 /* CC::al */, $noreg, $r7, killed $lr, implicit-def $sp, implicit $sp
    $r7 = frame-setup tMOVr $sp, 14 /* CC::al */, $noreg
    $sp = frame-setup tSUBspi $sp, 40, 14 /* CC::al */, $noreg
    renamable $r0 = tMOVr $sp, 14 /* CC::al */, $noreg
    tBL 14 /* CC::al */, $noreg, @setjmp, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $r0, implicit-def $sp, implicit-def $r0
    t2BTI
    renamable $r2 = nsw t2ADDri $r0, 3, 14 /* CC::al */, $noreg, $noreg
    tCMPi8 killed renamable $r0, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
    t2IT 0, 2, implicit-def $itstate
    renamable $r0 = tMOVi8 $noreg, 0, 0 /* CC::eq */, $cpsr, implicit $itstate
    $sp = frame-destroy tADDspi $sp, 40, 0 /* CC::eq */, $cpsr, implicit $itstate
    frame-destroy tPOP_RET 0 /* CC::eq */, killed $cpsr, def $r7, def $pc, implicit killed $r0, implicit $sp, implicit killed $itstate

  bb.1.if.then:
    renamable $r0 = tMOVr $sp, 14 /* CC::al */, $noreg
    renamable $r1, dead $cpsr = tMOVi8 1, 14 /* CC::al */, $noreg
    tBL 14 /* CC::al */, $noreg, @longjmp, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $r0, implicit killed $r1, implicit-def $sp

...

# CHECK-LABEL: name:            foo_setjmp
# CHECK:       body:
# CHECK: tBL 14 /* CC::al */, $noreg, @setjmp, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $r0, implicit-def $sp, implicit-def $r0
# CHECK-NEXT:    t2BTI

---
name:            foo_sg
tracksRegLiveness: true
body:             |
  bb.0.entry:
    liveins: $r0

    t2SG 14 /* CC::al */, $noreg
    renamable $r0, dead $cpsr = nsw tADDi8 killed renamable $r0, 1, 14 /* CC::al */, $noreg
    tBX_RET 14 /* CC::al */, $noreg, implicit killed $r0

...

# CHECK-LABEL: name:            foo_sg
# CHECK:       body:
# CHECK-NEXT:   bb.0.entry:
# CHECK-NEXT:     liveins: $r0
# CHECK-NEXT:     {{^ +$}}
# CHECK-NEXT:     t2SG