llvm/test/Transforms/LoopVectorize/exact.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals all --version 6
; RUN: opt < %s -passes=loop-vectorize -force-vector-width=4 -S | FileCheck %s

target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"

define void @lshr_exact(ptr %x) !prof !{!"function_entry_count", i32 1} {
; CHECK-LABEL: define void @lshr_exact(
; CHECK-SAME: ptr [[X:%.*]]) !prof [[PROF0:![0-9]+]] {
; CHECK-NEXT:  [[ENTRY:.*:]]
; CHECK-NEXT:    br label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK:       [[VECTOR_BODY]]:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP0:%.*]] = getelementptr inbounds i32, ptr [[X]], i64 [[INDEX]]
; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP0]], align 4
; CHECK-NEXT:    [[TMP1:%.*]] = lshr exact <4 x i32> [[WIDE_LOAD]], splat (i32 1)
; CHECK-NEXT:    store <4 x i32> [[TMP1]], ptr [[TMP0]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP2:%.*]] = icmp eq i64 [[INDEX_NEXT]], 256
; CHECK-NEXT:    br i1 [[TMP2]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !prof [[PROF1:![0-9]+]], !llvm.loop [[LOOP2:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    br label %[[FOR_END:.*]]
; CHECK:       [[FOR_END]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %for.body

for.body:
  %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
  %arrayidx = getelementptr inbounds i32, ptr %x, i64 %iv
  %0 = load i32, ptr %arrayidx, align 4
  %conv1 = lshr exact i32 %0, 1
  store i32 %conv1, ptr %arrayidx, align 4
  %iv.next = add nuw nsw i64 %iv, 1
  %exitcond = icmp eq i64 %iv.next, 256
  br i1 %exitcond, label %for.end, label %for.body

for.end:
  ret void
}
;.
; CHECK: [[PROF0]] = !{!"function_entry_count", i32 1}
; CHECK: [[PROF1]] = !{!"branch_weights", i32 1, i32 63}
; CHECK: [[LOOP2]] = distinct !{[[LOOP2]], [[META3:![0-9]+]], [[META4:![0-9]+]], [[META5:![0-9]+]]}
; CHECK: [[META3]] = !{!"llvm.loop.isvectorized", i32 1}
; CHECK: [[META4]] = !{!"llvm.loop.unroll.runtime.disable"}
; CHECK: [[META5]] = !{!"llvm.loop.estimated_trip_count", i32 64}
;.