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# RUN: not --crash llc -mtriple=aarch64 -o /dev/null -run-pass=none -verify-machineinstrs %s 2>&1 | FileCheck %s
# REQUIRES: aarch64-registered-target
# Undef uses are illegal for generic vregs.
---
name: test_undef_use
liveins:
body: |
bb.0:
%0:_(s32) = G_CONSTANT i32 0
; Test generic instruction
; CHECK: *** Bad machine code: Generic virtual register use cannot be undef ***
G_STORE %0, undef %1:_(p0) :: (store (s32))
; Make sure this fails on a post-isel generic instruction.
; CHECK: *** Bad machine code: Generic virtual register use cannot be undef ***
$x0 = COPY undef %2:_(s64)
; Make sure this fails with a target instruction
; CHECK: *** Bad machine code: Generic virtual register use cannot be undef ***
RET_ReallyLR implicit $x0, implicit undef %3:_(s32)
...
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