; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -passes=sandbox-vectorizer -sbvec-vec-reg-bits=1024 -sbvec-passes="regions-from-metadata<pack-reuse>" %s -S | FileCheck %s

define void @pack_reuse(i8 %v0, i8 %v1, ptr %ptr) {
; CHECK-LABEL: define void @pack_reuse(
; CHECK-SAME: i8 [[V0:%.*]], i8 [[V1:%.*]], ptr [[PTR:%.*]]) {
; CHECK-NEXT:    [[PACKA0:%.*]] = insertelement <2 x i8> poison, i8 [[V0]], i64 0, !sandboxvec [[META0:![0-9]+]]
; CHECK-NEXT:    [[PACKA1:%.*]] = insertelement <2 x i8> [[PACKA0]], i8 [[V1]], i64 1, !sandboxvec [[META0]]
; CHECK-NEXT:    store <2 x i8> [[PACKA1]], ptr [[PTR]], align 2, !sandboxvec [[META0]]
; CHECK-NEXT:    store <2 x i8> [[PACKA1]], ptr [[PTR]], align 2, !sandboxvec [[META0]]
; CHECK-NEXT:    [[PACKC0:%.*]] = insertelement <2 x i8> poison, i8 [[V1]], i64 0, !sandboxvec [[META0]]
; CHECK-NEXT:    [[PACKC1:%.*]] = insertelement <2 x i8> [[PACKC0]], i8 [[V0]], i64 1, !sandboxvec [[META0]]
; CHECK-NEXT:    store <2 x i8> [[PACKC1]], ptr [[PTR]], align 2, !sandboxvec [[META0]]
; CHECK-NEXT:    ret void
;
  %PackA0 = insertelement <2 x i8> poison, i8 %v0, i64 0, !sandboxvec !0
  %PackA1 = insertelement <2 x i8> %PackA0, i8 %v1, i64 1, !sandboxvec !0
  store <2 x i8> %PackA1, ptr %ptr, !sandboxvec !0

  ; Should reuse PackA1.
  %PackB0 = insertelement <2 x i8> poison, i8 %v0, i64 0, !sandboxvec !0
  %PackB1 = insertelement <2 x i8> %PackB0, i8 %v1, i64 1, !sandboxvec !0
  store <2 x i8> %PackB1, ptr %ptr, !sandboxvec !0

  ; Should remain.
  %PackC0 = insertelement <2 x i8> poison, i8 %v1, i64 0, !sandboxvec !0
  %PackC1 = insertelement <2 x i8> %PackC0, i8 %v0, i64 1, !sandboxvec !0
  store <2 x i8> %PackC1, ptr %ptr, !sandboxvec !0
  ret void
}

; TODO: For now we don't support reusing packs from earlier BBs.
define void @pack_cross_bb(i8 %v0, i8 %v1, ptr %ptr) {
; CHECK-LABEL: define void @pack_cross_bb(
; CHECK-SAME: i8 [[V0:%.*]], i8 [[V1:%.*]], ptr [[PTR:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*:]]
; CHECK-NEXT:    [[PACKA0:%.*]] = insertelement <2 x i8> poison, i8 [[V0]], i64 0, !sandboxvec [[META1:![0-9]+]]
; CHECK-NEXT:    [[PACKA1:%.*]] = insertelement <2 x i8> [[PACKA0]], i8 [[V1]], i64 1, !sandboxvec [[META1]]
; CHECK-NEXT:    store <2 x i8> [[PACKA1]], ptr [[PTR]], align 2, !sandboxvec [[META1]]
; CHECK-NEXT:    br label %[[BB:.*]]
; CHECK:       [[BB]]:
; CHECK-NEXT:    [[PACKB0:%.*]] = insertelement <2 x i8> poison, i8 [[V0]], i64 0, !sandboxvec [[META1]]
; CHECK-NEXT:    [[PACKB1:%.*]] = insertelement <2 x i8> [[PACKB0]], i8 [[V1]], i64 1, !sandboxvec [[META1]]
; CHECK-NEXT:    store <2 x i8> [[PACKB1]], ptr [[PTR]], align 2, !sandboxvec [[META1]]
; CHECK-NEXT:    [[PACKC0:%.*]] = insertelement <2 x i8> poison, i8 [[V1]], i64 0, !sandboxvec [[META1]]
; CHECK-NEXT:    [[PACKC1:%.*]] = insertelement <2 x i8> [[PACKC0]], i8 [[V0]], i64 1, !sandboxvec [[META1]]
; CHECK-NEXT:    store <2 x i8> [[PACKC1]], ptr [[PTR]], align 2, !sandboxvec [[META1]]
; CHECK-NEXT:    ret void
;
entry:
  %PackA0 = insertelement <2 x i8> poison, i8 %v0, i64 0, !sandboxvec !0
  %PackA1 = insertelement <2 x i8> %PackA0, i8 %v1, i64 1, !sandboxvec !0
  store <2 x i8> %PackA1, ptr %ptr, !sandboxvec !0
  br label %bb

bb:
  %PackB0 = insertelement <2 x i8> poison, i8 %v0, i64 0, !sandboxvec !0
  %PackB1 = insertelement <2 x i8> %PackB0, i8 %v1, i64 1, !sandboxvec !0
  store <2 x i8> %PackB1, ptr %ptr, !sandboxvec !0

  %PackC0 = insertelement <2 x i8> poison, i8 %v1, i64 0, !sandboxvec !0
  %PackC1 = insertelement <2 x i8> %PackC0, i8 %v0, i64 1, !sandboxvec !0
  store <2 x i8> %PackC1, ptr %ptr, !sandboxvec !0
  ret void
}

!0 = distinct !{!"sandboxregion"}
;.
; CHECK: [[META0]] = distinct !{!"sandboxregion"}
; CHECK: [[META1]] = distinct !{!"sandboxregion"}
;.