test/SILOptimizer/verifier_reject.sil

// RUN: %empty-directory(%t)
// RUN: not --crash %target-sil-opt -enable-sil-verify-all %s 2> %t/err.txt
// RUN: %FileCheck %s < %t/err.txt

// REQUIRES: asserts

// The test in this file is meant to fail the verifier.

import Builtin

// CHECK: SIL verification failed: return with stack allocs that haven't been deallocated: state.Stack.empty()

sil @fail1: $@convention(thin) (Builtin.Int1) -> () {
bb0(%0 : $Builtin.Int1):
  %2 = integer_literal $Builtin.Int1, -1
  cond_br %0, bb1, bb5

// Loop.
bb1:
  %4 = alloc_stack $Builtin.Int32
  cond_br %0, bb2, bb3

bb2:
  dealloc_stack %4 : $*Builtin.Int32
  cond_br %0, bb4, bb1

// Cloned loop.
bb5:
  %6 = alloc_stack $Builtin.Int32
  cond_br %0, bb6, bb3

bb6:
  dealloc_stack %6 : $*Builtin.Int32
  cond_br %0, bb4, bb5

// Shared partially unreachable exit block.
bb3:
  cond_br %0, bb7, bb4

bb7:
  cond_fail %2 : $Builtin.Int1
  unreachable

bb4:
  %10 = tuple ()
  return %10 : $()
}