llvm/llvm/test/CodeGen/Mips/indirect-jump-hazard/guards-verify-tailcall.mir

# RUN: not --crash llc -mtriple=mips-mti-linux-gnu -mcpu=mips32r2 %s \
# RUN:         -start-after=finalize-isel -stop-after=finalize-isel \
# RUN:         -verify-machineinstrs -mattr=+use-indirect-jump-hazard -o - 2>&1 \
# RUN:   | FileCheck %s

# That that tail calls are checked when using indirect jump guards (hazard variant).

# CHECK: Bad machine code: invalid instruction when using jump guards!
--- |
  define i32 @fooTail(ptr nocapture %f1) {
  entry:
    %0 = tail call i32 %f1(i32 14)
    ret i32 %0
  }

...
---
name:            fooTail
alignment:       4
exposesReturnsTwice: false
legalized:       false
regBankSelected: false
selected:        false
tracksRegLiveness: true
registers:
  - { id: 0, class: gpr32, preferred-register: '' }
  - { id: 1, class: gpr32, preferred-register: '' }
liveins:
  - { reg: '$a0', virtual-reg: '%0' }
frameInfo:
  isFrameAddressTaken: false
  isReturnAddressTaken: false
  hasStackMap:     false
  hasPatchPoint:   false
  stackSize:       0
  offsetAdjustment: 0
  maxAlignment:    1
  adjustsStack:    false
  hasCalls:        false
  stackProtector:  ''
  maxCallFrameSize: 4294967295
  hasOpaqueSPAdjustment: false
  hasVAStart:      false
  hasMustTailInVarArgFunc: false
  savePoint:       ''
  restorePoint:    ''
fixedStack:
stack:
constants:
body:             |
  bb.0.entry:
    liveins: $a0

    %0:gpr32 = COPY $a0
    %1:gpr32 = ADDiu $zero, 14
    $a0 = COPY %1
    TAILCALLREG %0, csr_o32, implicit-def dead $at, implicit $a0

...