llvm/test/Transforms/LoopVectorize/flags.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 5
; RUN: opt < %s -passes=loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -S | FileCheck %s

define void @flags1(i64 %n, ptr nocapture %A) {
; CHECK-LABEL: define void @flags1(
; CHECK-SAME: i64 [[N:%.*]], ptr captures(none) [[A:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], 4
; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[N]], 4
; CHECK-NEXT:    [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]]
; 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 [[A]], i64 [[INDEX]]
; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP0]], align 4
; CHECK-NEXT:    [[TMP1:%.*]] = mul nsw <4 x i32> [[WIDE_LOAD]], splat (i32 3)
; 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]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[TMP2]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[CMP_N]], label %[[EXIT:.*]], label %[[SCALAR_PH]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[TMP3:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
; CHECK-NEXT:    [[TMP4:%.*]] = load i32, ptr [[TMP3]], align 4
; CHECK-NEXT:    [[TMP5:%.*]] = mul nsw i32 [[TMP4]], 3
; CHECK-NEXT:    store i32 [[TMP5]], ptr [[TMP3]], align 4
; CHECK-NEXT:    [[IV_NEXT]] = add i64 [[IV]], 1
; CHECK-NEXT:    [[EC:%.*]] = icmp eq i64 [[IV_NEXT]], [[N]]
; CHECK-NEXT:    br i1 [[EC]], label %[[EXIT]], label %[[LOOP]], !llvm.loop [[LOOP3:![0-9]+]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
  %2 = getelementptr inbounds i32, ptr %A, i64 %iv
  %3 = load i32, ptr %2, align 4
  %4 = mul nsw i32 %3, 3
  store i32 %4, ptr %2, align 4
  %iv.next = add i64 %iv, 1
  %ec = icmp eq i64 %iv.next, %n
  br i1 %ec, label %exit, label %loop

exit:
  ret void
}

define void @flags2(i64 %n, ptr %A) {
; CHECK-LABEL: define void @flags2(
; CHECK-SAME: i64 [[N:%.*]], ptr [[A:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], 4
; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[N]], 4
; CHECK-NEXT:    [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]]
; 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 [[A]], i64 [[INDEX]]
; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP0]], align 4
; CHECK-NEXT:    [[TMP1:%.*]] = mul <4 x i32> [[WIDE_LOAD]], splat (i32 3)
; 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]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[TMP2]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[CMP_N]], label %[[EXIT:.*]], label %[[SCALAR_PH]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[TMP3:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
; CHECK-NEXT:    [[TMP4:%.*]] = load i32, ptr [[TMP3]], align 4
; CHECK-NEXT:    [[TMP5:%.*]] = mul i32 [[TMP4]], 3
; CHECK-NEXT:    store i32 [[TMP5]], ptr [[TMP3]], align 4
; CHECK-NEXT:    [[IV_NEXT]] = add i64 [[IV]], 1
; CHECK-NEXT:    [[EC:%.*]] = icmp eq i64 [[IV_NEXT]], [[N]]
; CHECK-NEXT:    br i1 [[EC]], label %[[EXIT]], label %[[LOOP]], !llvm.loop [[LOOP5:![0-9]+]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
  %2 = getelementptr inbounds i32, ptr %A, i64 %iv
  %3 = load i32, ptr %2, align 4
  %4 = mul i32 %3, 3
  store i32 %4, ptr %2, align 4
  %iv.next = add i64 %iv, 1
  %ec = icmp eq i64 %iv.next, %n
  br i1 %ec, label %exit, label %loop

exit:
  ret void
}

; Make sure we copy fast math flags and use them for the final reduction.
define float @fast_math(ptr noalias %s) {
; CHECK-LABEL: define float @fast_math(
; CHECK-SAME: ptr noalias [[S:%.*]]) {
; 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:    [[VEC_PHI:%.*]] = phi <4 x float> [ zeroinitializer, %[[VECTOR_PH]] ], [ [[TMP1:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP0:%.*]] = getelementptr inbounds float, ptr [[S]], i64 [[INDEX]]
; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x float>, ptr [[TMP0]], align 4
; CHECK-NEXT:    [[TMP1]] = fadd fast <4 x float> [[VEC_PHI]], [[WIDE_LOAD]]
; 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]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    [[TMP3:%.*]] = call fast float @llvm.vector.reduce.fadd.v4f32(float 0.000000e+00, <4 x float> [[TMP1]])
; CHECK-NEXT:    br label %[[EXIT:.*]]
; CHECK:       [[SCALAR_PH:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ 0, %[[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[RED:%.*]] = phi float [ 0.000000e+00, %[[SCALAR_PH]] ], [ [[ADD:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds float, ptr [[S]], i64 [[IV]]
; CHECK-NEXT:    [[TMP4:%.*]] = load float, ptr [[ARRAYIDX]], align 4
; CHECK-NEXT:    [[ADD]] = fadd fast float [[RED]], [[TMP4]]
; CHECK-NEXT:    [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; CHECK-NEXT:    [[EC:%.*]] = icmp eq i64 [[IV_NEXT]], 256
; CHECK-NEXT:    br i1 [[EC]], label %[[EXIT]], label %[[LOOP]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    [[ADD_LCSSA:%.*]] = phi float [ [[ADD]], %[[LOOP]] ], [ [[TMP3]], %[[MIDDLE_BLOCK]] ]
; CHECK-NEXT:    ret float [[ADD_LCSSA]]
;
entry:
  br label %loop

loop:
  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
  %red = phi float [ 0.000000e+00, %entry ], [ %add, %loop ]
  %arrayidx = getelementptr inbounds float, ptr %s, i64 %iv
  %0 = load float, ptr %arrayidx, align 4
  %add = fadd fast float %red, %0
  %iv.next = add nuw nsw i64 %iv, 1
  %ec = icmp eq i64 %iv.next, 256
  br i1 %ec, label %exit, label %loop

exit:
  %add.lcssa = phi float [ %add, %loop ]
  ret float %add.lcssa
}

define void @gep_with_shared_nusw_and_others(i64 %n, ptr %A) {
; CHECK-LABEL: define void @gep_with_shared_nusw_and_others(
; CHECK-SAME: i64 [[N:%.*]], ptr [[A:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    [[TMP0:%.*]] = add i64 [[N]], 1
; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[TMP0]], 4
; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[TMP0]], 4
; CHECK-NEXT:    [[N_VEC:%.*]] = sub i64 [[TMP0]], [[N_MOD_VF]]
; CHECK-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK:       [[VECTOR_BODY]]:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP1:%.*]] = getelementptr nusw float, ptr [[A]], i64 [[INDEX]]
; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x float>, ptr [[TMP1]], align 4
; CHECK-NEXT:    store <4 x float> [[WIDE_LOAD]], ptr [[TMP1]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP2:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[TMP2]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP7:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[TMP0]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[CMP_N]], label %[[EXIT:.*]], label %[[SCALAR_PH]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[GEP_NUSW:%.*]] = getelementptr nusw float, ptr [[A]], i64 [[IV]]
; CHECK-NEXT:    [[L:%.*]] = load float, ptr [[GEP_NUSW]], align 4
; CHECK-NEXT:    [[GEP_NUSW_NUW:%.*]] = getelementptr nusw nuw float, ptr [[A]], i64 [[IV]]
; CHECK-NEXT:    store float [[L]], ptr [[GEP_NUSW_NUW]], align 4
; CHECK-NEXT:    [[IV_NEXT]] = add i64 [[IV]], 1
; CHECK-NEXT:    [[EC:%.*]] = icmp eq i64 [[IV]], [[N]]
; CHECK-NEXT:    br i1 [[EC]], label %[[EXIT]], label %[[LOOP]], !llvm.loop [[LOOP8:![0-9]+]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
  %gep.nusw = getelementptr nusw float, ptr %A, i64 %iv
  %l = load float, ptr %gep.nusw, align 4
  %gep.nusw.nuw = getelementptr nusw nuw float, ptr %A, i64 %iv
  store float %l, ptr %gep.nusw.nuw, align 4
  %iv.next = add i64 %iv, 1
  %ec = icmp eq i64 %iv, %n
  br i1 %ec, label %exit, label %loop

exit:
  ret void
}

define void @exact_on_first_shift(ptr noalias %A, ptr noalias %B) {
; CHECK-LABEL: define void @exact_on_first_shift(
; CHECK-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]]) {
; 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:    [[TMP1:%.*]] = getelementptr i32, ptr [[A]], i64 [[INDEX]]
; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP1]], align 4
; CHECK-NEXT:    [[TMP2:%.*]] = lshr <4 x i32> [[WIDE_LOAD]], splat (i32 10)
; CHECK-NEXT:    store <4 x i32> [[TMP2]], ptr [[TMP1]], align 4
; CHECK-NEXT:    [[TMP3:%.*]] = getelementptr i32, ptr [[B]], i64 [[INDEX]]
; CHECK-NEXT:    store <4 x i32> [[TMP2]], ptr [[TMP3]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP4:%.*]] = icmp eq i64 [[INDEX_NEXT]], 128
; CHECK-NEXT:    br i1 [[TMP4]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP9:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    br label %[[SCALAR_PH:.*]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ 128, %[[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[GEP_A:%.*]] = getelementptr i32, ptr [[A]], i64 [[IV]]
; CHECK-NEXT:    [[L_A:%.*]] = load i32, ptr [[GEP_A]], align 4
; CHECK-NEXT:    [[LSHR_1:%.*]] = lshr exact i32 [[L_A]], 10
; CHECK-NEXT:    store i32 [[LSHR_1]], ptr [[GEP_A]], align 4
; CHECK-NEXT:    [[GEP_B:%.*]] = getelementptr i32, ptr [[B]], i64 [[IV]]
; CHECK-NEXT:    [[LSHR_2:%.*]] = lshr i32 [[L_A]], 10
; CHECK-NEXT:    store i32 [[LSHR_2]], ptr [[GEP_B]], align 4
; CHECK-NEXT:    [[IV_NEXT]] = add i64 [[IV]], 1
; CHECK-NEXT:    [[EC:%.*]] = icmp eq i64 [[IV]], 128
; CHECK-NEXT:    br i1 [[EC]], label %[[EXIT:.*]], label %[[LOOP]], !llvm.loop [[LOOP10:![0-9]+]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
  %gep.A = getelementptr i32, ptr %A, i64 %iv
  %l.A = load i32, ptr %gep.A, align 4
  %lshr.1 = lshr exact i32 %l.A, 10
  store i32 %lshr.1, ptr %gep.A, align 4
  %gep.B = getelementptr i32, ptr %B, i64 %iv
  %lshr.2 = lshr i32 %l.A, 10
  store i32 %lshr.2, ptr %gep.B, align 4
  %iv.next = add i64 %iv, 1
  %ec = icmp eq i64 %iv, 128
  br i1 %ec, label %exit, label %loop

exit:
  ret void
}

define void @exact_on_second_shift(ptr noalias %A, ptr noalias %B) {
; CHECK-LABEL: define void @exact_on_second_shift(
; CHECK-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]]) {
; 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:    [[TMP1:%.*]] = getelementptr i32, ptr [[A]], i64 [[INDEX]]
; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP1]], align 4
; CHECK-NEXT:    [[TMP2:%.*]] = lshr <4 x i32> [[WIDE_LOAD]], splat (i32 10)
; CHECK-NEXT:    store <4 x i32> [[TMP2]], ptr [[TMP1]], align 4
; CHECK-NEXT:    [[TMP3:%.*]] = getelementptr i32, ptr [[B]], i64 [[INDEX]]
; CHECK-NEXT:    store <4 x i32> [[TMP2]], ptr [[TMP3]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP4:%.*]] = icmp eq i64 [[INDEX_NEXT]], 128
; CHECK-NEXT:    br i1 [[TMP4]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP11:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    br label %[[SCALAR_PH:.*]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ 128, %[[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[GEP_A:%.*]] = getelementptr i32, ptr [[A]], i64 [[IV]]
; CHECK-NEXT:    [[L_A:%.*]] = load i32, ptr [[GEP_A]], align 4
; CHECK-NEXT:    [[LSHR_1:%.*]] = lshr i32 [[L_A]], 10
; CHECK-NEXT:    store i32 [[LSHR_1]], ptr [[GEP_A]], align 4
; CHECK-NEXT:    [[GEP_B:%.*]] = getelementptr i32, ptr [[B]], i64 [[IV]]
; CHECK-NEXT:    [[LSHR_2:%.*]] = lshr exact i32 [[L_A]], 10
; CHECK-NEXT:    store i32 [[LSHR_2]], ptr [[GEP_B]], align 4
; CHECK-NEXT:    [[IV_NEXT]] = add i64 [[IV]], 1
; CHECK-NEXT:    [[EC:%.*]] = icmp eq i64 [[IV]], 128
; CHECK-NEXT:    br i1 [[EC]], label %[[EXIT:.*]], label %[[LOOP]], !llvm.loop [[LOOP12:![0-9]+]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
  %gep.A = getelementptr i32, ptr %A, i64 %iv
  %l.A = load i32, ptr %gep.A, align 4
  %lshr.1 = lshr i32 %l.A, 10
  store i32 %lshr.1, ptr %gep.A, align 4
  %gep.B = getelementptr i32, ptr %B, i64 %iv
  %lshr.2 = lshr exact i32 %l.A, 10
  store i32 %lshr.2, ptr %gep.B, align 4
  %iv.next = add i64 %iv, 1
  %ec = icmp eq i64 %iv, 128
  br i1 %ec, label %exit, label %loop

exit:
  ret void
}

define void @exact_on_both_shifts(ptr noalias %A, ptr noalias %B) {
; CHECK-LABEL: define void @exact_on_both_shifts(
; CHECK-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]]) {
; 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 i32, ptr [[A]], 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 10)
; CHECK-NEXT:    store <4 x i32> [[TMP1]], ptr [[TMP0]], align 4
; CHECK-NEXT:    [[TMP2:%.*]] = getelementptr i32, ptr [[B]], i64 [[INDEX]]
; CHECK-NEXT:    store <4 x i32> [[TMP1]], ptr [[TMP2]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP3:%.*]] = icmp eq i64 [[INDEX_NEXT]], 128
; CHECK-NEXT:    br i1 [[TMP3]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP13:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    br label %[[SCALAR_PH:.*]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ 128, %[[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[GEP_A:%.*]] = getelementptr i32, ptr [[A]], i64 [[IV]]
; CHECK-NEXT:    [[L_A:%.*]] = load i32, ptr [[GEP_A]], align 4
; CHECK-NEXT:    [[LSHR_1:%.*]] = lshr exact i32 [[L_A]], 10
; CHECK-NEXT:    store i32 [[LSHR_1]], ptr [[GEP_A]], align 4
; CHECK-NEXT:    [[GEP_B:%.*]] = getelementptr i32, ptr [[B]], i64 [[IV]]
; CHECK-NEXT:    [[LSHR_2:%.*]] = lshr exact i32 [[L_A]], 10
; CHECK-NEXT:    store i32 [[LSHR_2]], ptr [[GEP_B]], align 4
; CHECK-NEXT:    [[IV_NEXT]] = add i64 [[IV]], 1
; CHECK-NEXT:    [[EC:%.*]] = icmp eq i64 [[IV]], 128
; CHECK-NEXT:    br i1 [[EC]], label %[[EXIT:.*]], label %[[LOOP]], !llvm.loop [[LOOP14:![0-9]+]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
  %gep.A = getelementptr i32, ptr %A, i64 %iv
  %l.A = load i32, ptr %gep.A, align 4
  %lshr.1 = lshr exact i32 %l.A, 10
  store i32 %lshr.1, ptr %gep.A, align 4
  %gep.B = getelementptr i32, ptr %B, i64 %iv
  %lshr.2 = lshr exact i32 %l.A, 10
  store i32 %lshr.2, ptr %gep.B, align 4
  %iv.next = add i64 %iv, 1
  %ec = icmp eq i64 %iv, 128
  br i1 %ec, label %exit, label %loop

exit:
  ret void
}

define void @disjoint_on_first_or(ptr noalias %A, ptr noalias %B) {
; CHECK-LABEL: define void @disjoint_on_first_or(
; CHECK-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]]) {
; 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 i32, ptr [[A]], i64 [[INDEX]]
; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP0]], align 4
; CHECK-NEXT:    [[TMP1:%.*]] = or <4 x i32> [[WIDE_LOAD]], splat (i32 10)
; CHECK-NEXT:    store <4 x i32> [[TMP1]], ptr [[TMP0]], align 4
; CHECK-NEXT:    [[TMP2:%.*]] = getelementptr i32, ptr [[B]], i64 [[INDEX]]
; CHECK-NEXT:    store <4 x i32> [[TMP1]], ptr [[TMP2]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP3:%.*]] = icmp eq i64 [[INDEX_NEXT]], 128
; CHECK-NEXT:    br i1 [[TMP3]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP15:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    br label %[[SCALAR_PH:.*]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ 128, %[[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[GEP_A:%.*]] = getelementptr i32, ptr [[A]], i64 [[IV]]
; CHECK-NEXT:    [[L_A:%.*]] = load i32, ptr [[GEP_A]], align 4
; CHECK-NEXT:    [[OR_1:%.*]] = or disjoint i32 [[L_A]], 10
; CHECK-NEXT:    store i32 [[OR_1]], ptr [[GEP_A]], align 4
; CHECK-NEXT:    [[GEP_B:%.*]] = getelementptr i32, ptr [[B]], i64 [[IV]]
; CHECK-NEXT:    [[OR_2:%.*]] = or i32 [[L_A]], 10
; CHECK-NEXT:    store i32 [[OR_2]], ptr [[GEP_B]], align 4
; CHECK-NEXT:    [[IV_NEXT]] = add i64 [[IV]], 1
; CHECK-NEXT:    [[EC:%.*]] = icmp eq i64 [[IV]], 128
; CHECK-NEXT:    br i1 [[EC]], label %[[EXIT:.*]], label %[[LOOP]], !llvm.loop [[LOOP16:![0-9]+]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
  %gep.A = getelementptr i32, ptr %A, i64 %iv
  %l.A = load i32, ptr %gep.A, align 4
  %or.1 = or disjoint i32 %l.A, 10
  store i32 %or.1, ptr %gep.A, align 4
  %gep.B = getelementptr i32, ptr %B, i64 %iv
  %or.2 = or i32 %l.A, 10
  store i32 %or.2, ptr %gep.B, align 4
  %iv.next = add i64 %iv, 1
  %ec = icmp eq i64 %iv, 128
  br i1 %ec, label %exit, label %loop

exit:
  ret void
}

define void @disjoint_on_second_or(ptr noalias %A, ptr noalias %B) {
; CHECK-LABEL: define void @disjoint_on_second_or(
; CHECK-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]]) {
; 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 i32, ptr [[A]], i64 [[INDEX]]
; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP0]], align 4
; CHECK-NEXT:    [[TMP1:%.*]] = or <4 x i32> [[WIDE_LOAD]], splat (i32 10)
; CHECK-NEXT:    store <4 x i32> [[TMP1]], ptr [[TMP0]], align 4
; CHECK-NEXT:    [[TMP2:%.*]] = getelementptr i32, ptr [[B]], i64 [[INDEX]]
; CHECK-NEXT:    store <4 x i32> [[TMP1]], ptr [[TMP2]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP3:%.*]] = icmp eq i64 [[INDEX_NEXT]], 128
; CHECK-NEXT:    br i1 [[TMP3]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP17:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    br label %[[SCALAR_PH:.*]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ 128, %[[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[GEP_A:%.*]] = getelementptr i32, ptr [[A]], i64 [[IV]]
; CHECK-NEXT:    [[L_A:%.*]] = load i32, ptr [[GEP_A]], align 4
; CHECK-NEXT:    [[OR_1:%.*]] = or i32 [[L_A]], 10
; CHECK-NEXT:    store i32 [[OR_1]], ptr [[GEP_A]], align 4
; CHECK-NEXT:    [[GEP_B:%.*]] = getelementptr i32, ptr [[B]], i64 [[IV]]
; CHECK-NEXT:    [[OR_2:%.*]] = or disjoint i32 [[L_A]], 10
; CHECK-NEXT:    store i32 [[OR_2]], ptr [[GEP_B]], align 4
; CHECK-NEXT:    [[IV_NEXT]] = add i64 [[IV]], 1
; CHECK-NEXT:    [[EC:%.*]] = icmp eq i64 [[IV]], 128
; CHECK-NEXT:    br i1 [[EC]], label %[[EXIT:.*]], label %[[LOOP]], !llvm.loop [[LOOP18:![0-9]+]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
  %gep.A = getelementptr i32, ptr %A, i64 %iv
  %l.A = load i32, ptr %gep.A, align 4
  %or.1 = or i32 %l.A, 10
  store i32 %or.1, ptr %gep.A, align 4
  %gep.B = getelementptr i32, ptr %B, i64 %iv
  %or.2 = or disjoint i32 %l.A, 10
  store i32 %or.2, ptr %gep.B, align 4
  %iv.next = add i64 %iv, 1
  %ec = icmp eq i64 %iv, 128
  br i1 %ec, label %exit, label %loop

exit:
  ret void
}

define void @disjoint_on_both_or(ptr noalias %A, ptr noalias %B) {
; CHECK-LABEL: define void @disjoint_on_both_or(
; CHECK-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]]) {
; 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 i32, ptr [[A]], i64 [[INDEX]]
; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP0]], align 4
; CHECK-NEXT:    [[TMP1:%.*]] = or disjoint <4 x i32> [[WIDE_LOAD]], splat (i32 10)
; CHECK-NEXT:    store <4 x i32> [[TMP1]], ptr [[TMP0]], align 4
; CHECK-NEXT:    [[TMP2:%.*]] = getelementptr i32, ptr [[B]], i64 [[INDEX]]
; CHECK-NEXT:    store <4 x i32> [[TMP1]], ptr [[TMP2]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP3:%.*]] = icmp eq i64 [[INDEX_NEXT]], 128
; CHECK-NEXT:    br i1 [[TMP3]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP19:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    br label %[[SCALAR_PH:.*]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ 128, %[[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[GEP_A:%.*]] = getelementptr i32, ptr [[A]], i64 [[IV]]
; CHECK-NEXT:    [[L_A:%.*]] = load i32, ptr [[GEP_A]], align 4
; CHECK-NEXT:    [[OR_1:%.*]] = or disjoint i32 [[L_A]], 10
; CHECK-NEXT:    store i32 [[OR_1]], ptr [[GEP_A]], align 4
; CHECK-NEXT:    [[GEP_B:%.*]] = getelementptr i32, ptr [[B]], i64 [[IV]]
; CHECK-NEXT:    [[OR_2:%.*]] = or disjoint i32 [[L_A]], 10
; CHECK-NEXT:    store i32 [[OR_2]], ptr [[GEP_B]], align 4
; CHECK-NEXT:    [[IV_NEXT]] = add i64 [[IV]], 1
; CHECK-NEXT:    [[EC:%.*]] = icmp eq i64 [[IV]], 128
; CHECK-NEXT:    br i1 [[EC]], label %[[EXIT:.*]], label %[[LOOP]], !llvm.loop [[LOOP20:![0-9]+]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
  %gep.A = getelementptr i32, ptr %A, i64 %iv
  %l.A = load i32, ptr %gep.A, align 4
  %or.1 = or disjoint i32 %l.A, 10
  store i32 %or.1, ptr %gep.A, align 4
  %gep.B = getelementptr i32, ptr %B, i64 %iv
  %or.2 = or disjoint i32 %l.A, 10
  store i32 %or.2, ptr %gep.B, align 4
  %iv.next = add i64 %iv, 1
  %ec = icmp eq i64 %iv, 128
  br i1 %ec, label %exit, label %loop

exit:
  ret void
}

define void @trunc_flags_no_common(ptr noalias %A, ptr noalias %B, ptr noalias %C) {
; CHECK-LABEL: define void @trunc_flags_no_common(
; CHECK-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]], ptr noalias [[C:%.*]]) {
; 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 i32, ptr [[A]], i64 [[INDEX]]
; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP0]], align 4
; CHECK-NEXT:    [[TMP1:%.*]] = trunc <4 x i32> [[WIDE_LOAD]] to <4 x i16>
; CHECK-NEXT:    [[TMP2:%.*]] = getelementptr i16, ptr [[B]], i64 [[INDEX]]
; CHECK-NEXT:    store <4 x i16> [[TMP1]], ptr [[TMP2]], align 4
; CHECK-NEXT:    store <4 x i16> [[TMP1]], ptr [[TMP2]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP3:%.*]] = icmp eq i64 [[INDEX_NEXT]], 128
; CHECK-NEXT:    br i1 [[TMP3]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP21:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    br label %[[SCALAR_PH:.*]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ 128, %[[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[GEP_A:%.*]] = getelementptr i32, ptr [[A]], i64 [[IV]]
; CHECK-NEXT:    [[L_A:%.*]] = load i32, ptr [[GEP_A]], align 4
; CHECK-NEXT:    [[TRUNC_1:%.*]] = trunc nsw i32 [[L_A]] to i16
; CHECK-NEXT:    [[GEP_B:%.*]] = getelementptr i16, ptr [[B]], i64 [[IV]]
; CHECK-NEXT:    store i16 [[TRUNC_1]], ptr [[GEP_B]], align 4
; CHECK-NEXT:    [[TRUNC_2:%.*]] = trunc nuw i32 [[L_A]] to i16
; CHECK-NEXT:    [[GEP_C:%.*]] = getelementptr i16, ptr [[C]], i64 [[IV]]
; CHECK-NEXT:    store i16 [[TRUNC_2]], ptr [[GEP_B]], align 4
; CHECK-NEXT:    [[IV_NEXT]] = add i64 [[IV]], 1
; CHECK-NEXT:    [[EC:%.*]] = icmp eq i64 [[IV]], 128
; CHECK-NEXT:    br i1 [[EC]], label %[[EXIT:.*]], label %[[LOOP]], !llvm.loop [[LOOP22:![0-9]+]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
  %gep.A = getelementptr i32, ptr %A, i64 %iv
  %l.A = load i32, ptr %gep.A, align 4
  %trunc.1 = trunc nsw i32 %l.A to i16
  %gep.B = getelementptr i16, ptr %B, i64 %iv
  store i16 %trunc.1, ptr %gep.B, align 4
  %trunc.2 = trunc nuw i32 %l.A to i16
  %gep.C = getelementptr i16, ptr %C, i64 %iv
  store i16 %trunc.2, ptr %gep.B, align 4
  %iv.next = add i64 %iv, 1
  %ec = icmp eq i64 %iv, 128
  br i1 %ec, label %exit, label %loop

exit:
  ret void
}

define void @trunc_flags_common(ptr noalias %A, ptr noalias %B, ptr noalias %C) {
; CHECK-LABEL: define void @trunc_flags_common(
; CHECK-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]], ptr noalias [[C:%.*]]) {
; 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 i32, ptr [[A]], i64 [[INDEX]]
; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP0]], align 4
; CHECK-NEXT:    [[TMP1:%.*]] = trunc nuw <4 x i32> [[WIDE_LOAD]] to <4 x i16>
; CHECK-NEXT:    [[TMP2:%.*]] = getelementptr i16, ptr [[B]], i64 [[INDEX]]
; CHECK-NEXT:    store <4 x i16> [[TMP1]], ptr [[TMP2]], align 4
; CHECK-NEXT:    store <4 x i16> [[TMP1]], ptr [[TMP2]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP3:%.*]] = icmp eq i64 [[INDEX_NEXT]], 128
; CHECK-NEXT:    br i1 [[TMP3]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP23:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    br label %[[SCALAR_PH:.*]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ 128, %[[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[GEP_A:%.*]] = getelementptr i32, ptr [[A]], i64 [[IV]]
; CHECK-NEXT:    [[L_A:%.*]] = load i32, ptr [[GEP_A]], align 4
; CHECK-NEXT:    [[TRUNC_1:%.*]] = trunc nuw i32 [[L_A]] to i16
; CHECK-NEXT:    [[GEP_B:%.*]] = getelementptr i16, ptr [[B]], i64 [[IV]]
; CHECK-NEXT:    store i16 [[TRUNC_1]], ptr [[GEP_B]], align 4
; CHECK-NEXT:    [[TRUNC_2:%.*]] = trunc nuw nsw i32 [[L_A]] to i16
; CHECK-NEXT:    [[GEP_C:%.*]] = getelementptr i16, ptr [[C]], i64 [[IV]]
; CHECK-NEXT:    store i16 [[TRUNC_2]], ptr [[GEP_B]], align 4
; CHECK-NEXT:    [[IV_NEXT]] = add i64 [[IV]], 1
; CHECK-NEXT:    [[EC:%.*]] = icmp eq i64 [[IV]], 128
; CHECK-NEXT:    br i1 [[EC]], label %[[EXIT:.*]], label %[[LOOP]], !llvm.loop [[LOOP24:![0-9]+]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
  %gep.A = getelementptr i32, ptr %A, i64 %iv
  %l.A = load i32, ptr %gep.A, align 4
  %trunc.1 = trunc nuw i32 %l.A to i16
  %gep.B = getelementptr i16, ptr %B, i64 %iv
  store i16 %trunc.1, ptr %gep.B, align 4
  %trunc.2 = trunc nuw nsw i32 %l.A to i16
  %gep.C = getelementptr i16, ptr %C, i64 %iv
  store i16 %trunc.2, ptr %gep.B, align 4
  %iv.next = add i64 %iv, 1
  %ec = icmp eq i64 %iv, 128
  br i1 %ec, label %exit, label %loop

exit:
  ret void
}