test/CodeGen/X86/pr64593.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
; RUN: llc -mtriple=x86_64-unknown-unknown -mcpu=skx < %s | FileCheck %s

; If we have a truncating store, we need to truncate the elements when
; when combining the constants.
define void @pr64593(ptr %p) {
; CHECK-LABEL: pr64593:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vpxor %xmm0, %xmm0, %xmm0
; CHECK-NEXT:    vpmovqb %zmm0, (%rdi)
; CHECK-NEXT:    movq $0, 8(%rdi)
; CHECK-NEXT:    vzeroupper
; CHECK-NEXT:    retq
  %v = insertelement <8 x i64> zeroinitializer, i64 0, i32 1
  %trunc = trunc <8 x i64> %v to <8 x i8>
  %p1 = getelementptr i8, ptr %p, i32 0
  %p2 = getelementptr i8, ptr %p, i32 8
  store <8 x i8> %trunc, ptr %p1
  store <8 x i8> zeroinitializer, ptr %p2
  ret void
}