test/Transforms/LoopVectorize/expand-ptrtoaddr.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --filter-out-after "scalar.ph:" --version 6
; RUN: opt -p loop-vectorize -force-vector-width=4 -S %s | FileCheck %s

define void @test_ptrtoaddr_tripcount(ptr %start, ptr %end) {
; CHECK-LABEL: define void @test_ptrtoaddr_tripcount(
; CHECK-SAME: ptr [[START:%.*]], ptr [[END:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*:]]
; CHECK-NEXT:    [[START_ADDR:%.*]] = ptrtoaddr ptr [[START]] to i64
; CHECK-NEXT:    [[END_ADDR:%.*]] = ptrtoaddr ptr [[END]] to i64
; CHECK-NEXT:    [[TMP0:%.*]] = add i64 [[END_ADDR]], 1
; CHECK-NEXT:    [[TMP1:%.*]] = sub i64 [[TMP0]], [[START_ADDR]]
; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[TMP1]], 4
; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[TMP1]], 4
; CHECK-NEXT:    [[N_VEC:%.*]] = sub i64 [[TMP1]], [[N_MOD_VF]]
; CHECK-NEXT:    [[TMP2:%.*]] = add i64 [[START_ADDR]], [[N_VEC]]
; CHECK-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK:       [[VECTOR_BODY]]:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[OFFSET_IDX:%.*]] = add i64 [[START_ADDR]], [[INDEX]]
; CHECK-NEXT:    [[TMP3:%.*]] = getelementptr inbounds i8, ptr [[START]], i64 [[OFFSET_IDX]]
; CHECK-NEXT:    store <4 x i8> zeroinitializer, ptr [[TMP3]], align 1
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP4:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[TMP4]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[TMP1]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[CMP_N]], [[EXIT:label %.*]], label %[[SCALAR_PH]]
; CHECK:       [[SCALAR_PH]]:
;
entry:
  %start.addr = ptrtoaddr ptr %start to i64
  %end.addr = ptrtoaddr ptr %end to i64
  br label %loop

loop:
  %iv = phi i64 [ %start.addr, %entry ], [ %iv.next, %loop ]
  %gep = getelementptr inbounds i8, ptr %start, i64 %iv
  store i8 0, ptr %gep
  %iv.next = add i64 %iv, 1
  %cmp = icmp ne i64 %iv, %end.addr
  br i1 %cmp, label %loop, label %exit

exit:
  ret void
}