llvm/llvm/test/MachineVerifier/test_g_build_vector_trunc.mir

#RUN: not --crash llc -o - -global-isel -run-pass=none -verify-machineinstrs %s 2>&1 | FileCheck %s
# REQUIRES: aarch64-registered-target
--- |
  target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
  target triple = "aarch64-unknown-unknown"

  define i32 @g_build_vector_trunc() {
    ret i32 0
  }

...
---
name:            g_build_vector_trunc
legalized:       true
regBankSelected: false
selected:        false
tracksRegLiveness: true
registers:
  - { id: 0, class: _, preferred-register: '' }
liveins:
body:             |
  bb.0:
    ; CHECK: Bad machine code: G_BUILD_VECTOR_TRUNC source operand types are not larger than dest elt type

    %0(s32) = IMPLICIT_DEF
    %1:_(<2 x s32>) = G_BUILD_VECTOR_TRUNC %0, %0
...