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; RUN: not llc -o /dev/null %s -mtriple=x86_64-unknown-unknown 2>&1 | FileCheck %s
; RUN: not llc -o /dev/null %s -mtriple=i386-unknown-unknown -mattr=avx512vl 2>&1 | FileCheck %s

; CHECK: error: couldn't allocate output register for constraint '{xmm16}'
define i64 @blup() {
  %v = tail call i64 asm "", "={xmm16},0"(i64 0)
  ret i64 %v
}