; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 5
; RUN: opt -passes=loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -S < %s | FileCheck %s --check-prefix=CHECK-VF4IC1
; RUN: opt -passes=loop-vectorize -force-vector-interleave=4 -force-vector-width=4 -S < %s | FileCheck %s --check-prefix=CHECK-VF4IC4
; RUN: opt -passes=loop-vectorize -force-vector-interleave=4 -force-vector-width=1 -S < %s | FileCheck %s --check-prefix=CHECK-VF1IC4

; About the truncated test cases, the range analysis of induction variable is
; used to ensure the induction variable is always greater than the sentinal
; value. The case is vectorizable if the truncated induction variable is
; monotonic increasing, and not equals to the sentinal.
define i32 @select_icmp_const_truncated_iv_widened_exit(ptr %a, i32 %n) {
; CHECK-VF4IC1-LABEL: define i32 @select_icmp_const_truncated_iv_widened_exit(
; CHECK-VF4IC1-SAME: ptr [[A:%.*]], i32 [[N:%.*]]) {
; CHECK-VF4IC1-NEXT:  [[ENTRY:.*]]:
; CHECK-VF4IC1-NEXT:    [[CMP_SGT:%.*]] = icmp sgt i32 [[N]], 0
; CHECK-VF4IC1-NEXT:    br i1 [[CMP_SGT]], label %[[FOR_BODY_PREHEADER:.*]], label %[[EXIT:.*]]
; CHECK-VF4IC1:       [[FOR_BODY_PREHEADER]]:
; CHECK-VF4IC1-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[N]] to i64
; CHECK-VF4IC1-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], 4
; CHECK-VF4IC1-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK-VF4IC1:       [[VECTOR_PH]]:
; CHECK-VF4IC1-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], 4
; CHECK-VF4IC1-NEXT:    [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-VF4IC1-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK-VF4IC1:       [[VECTOR_BODY]]:
; CHECK-VF4IC1-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[VEC_PHI:%.*]] = phi <4 x i32> [ splat (i32 -2147483648), %[[VECTOR_PH]] ], [ [[TMP4:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[VEC_IND:%.*]] = phi <4 x i32> [ <i32 0, i32 1, i32 2, i32 3>, %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[TMP1:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[INDEX]]
; CHECK-VF4IC1-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x i64>, ptr [[TMP1]], align 8
; CHECK-VF4IC1-NEXT:    [[TMP3:%.*]] = icmp sgt <4 x i64> [[WIDE_LOAD]], splat (i64 3)
; CHECK-VF4IC1-NEXT:    [[TMP4]] = select <4 x i1> [[TMP3]], <4 x i32> [[VEC_IND]], <4 x i32> [[VEC_PHI]]
; CHECK-VF4IC1-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-VF4IC1-NEXT:    [[VEC_IND_NEXT]] = add <4 x i32> [[VEC_IND]], splat (i32 4)
; CHECK-VF4IC1-NEXT:    [[TMP5:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-VF4IC1-NEXT:    br i1 [[TMP5]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK-VF4IC1:       [[MIDDLE_BLOCK]]:
; CHECK-VF4IC1-NEXT:    [[TMP6:%.*]] = call i32 @llvm.vector.reduce.smax.v4i32(<4 x i32> [[TMP4]])
; CHECK-VF4IC1-NEXT:    [[RDX_SELECT_CMP:%.*]] = icmp ne i32 [[TMP6]], -2147483648
; CHECK-VF4IC1-NEXT:    [[RDX_SELECT:%.*]] = select i1 [[RDX_SELECT_CMP]], i32 [[TMP6]], i32 331
; CHECK-VF4IC1-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-VF4IC1-NEXT:    br i1 [[CMP_N]], label %[[EXIT_LOOPEXIT:.*]], label %[[SCALAR_PH]]
; CHECK-VF4IC1:       [[SCALAR_PH]]:
; CHECK-VF4IC1-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[FOR_BODY_PREHEADER]] ]
; CHECK-VF4IC1-NEXT:    [[BC_MERGE_RDX:%.*]] = phi i32 [ [[RDX_SELECT]], %[[MIDDLE_BLOCK]] ], [ 331, %[[FOR_BODY_PREHEADER]] ]
; CHECK-VF4IC1-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF4IC1:       [[FOR_BODY]]:
; CHECK-VF4IC1-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[RDX:%.*]] = phi i32 [ [[BC_MERGE_RDX]], %[[SCALAR_PH]] ], [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[IV]]
; CHECK-VF4IC1-NEXT:    [[TMP7:%.*]] = load i64, ptr [[ARRAYIDX]], align 8
; CHECK-VF4IC1-NEXT:    [[CMP:%.*]] = icmp sgt i64 [[TMP7]], 3
; CHECK-VF4IC1-NEXT:    [[TMP8:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF4IC1-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP]], i32 [[TMP8]], i32 [[RDX]]
; CHECK-VF4IC1-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF4IC1-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], [[WIDE_TRIP_COUNT]]
; CHECK-VF4IC1-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT_LOOPEXIT]], label %[[FOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
; CHECK-VF4IC1:       [[EXIT_LOOPEXIT]]:
; CHECK-VF4IC1-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ], [ [[RDX_SELECT]], %[[MIDDLE_BLOCK]] ]
; CHECK-VF4IC1-NEXT:    br label %[[EXIT]]
; CHECK-VF4IC1:       [[EXIT]]:
; CHECK-VF4IC1-NEXT:    [[RDX_LCSSA:%.*]] = phi i32 [ 331, %[[ENTRY]] ], [ [[SPEC_SELECT_LCSSA]], %[[EXIT_LOOPEXIT]] ]
; CHECK-VF4IC1-NEXT:    ret i32 [[RDX_LCSSA]]
;
; CHECK-VF4IC4-LABEL: define i32 @select_icmp_const_truncated_iv_widened_exit(
; CHECK-VF4IC4-SAME: ptr [[A:%.*]], i32 [[N:%.*]]) {
; CHECK-VF4IC4-NEXT:  [[ENTRY:.*]]:
; CHECK-VF4IC4-NEXT:    [[CMP_SGT:%.*]] = icmp sgt i32 [[N]], 0
; CHECK-VF4IC4-NEXT:    br i1 [[CMP_SGT]], label %[[FOR_BODY_PREHEADER:.*]], label %[[EXIT:.*]]
; CHECK-VF4IC4:       [[FOR_BODY_PREHEADER]]:
; CHECK-VF4IC4-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[N]] to i64
; CHECK-VF4IC4-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], 16
; CHECK-VF4IC4-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK-VF4IC4:       [[VECTOR_PH]]:
; CHECK-VF4IC4-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], 16
; CHECK-VF4IC4-NEXT:    [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-VF4IC4-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK-VF4IC4:       [[VECTOR_BODY]]:
; CHECK-VF4IC4-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[VEC_PHI:%.*]] = phi <4 x i32> [ splat (i32 -2147483648), %[[VECTOR_PH]] ], [ [[TMP10:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[VEC_PHI1:%.*]] = phi <4 x i32> [ splat (i32 -2147483648), %[[VECTOR_PH]] ], [ [[TMP11:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[VEC_PHI2:%.*]] = phi <4 x i32> [ splat (i32 -2147483648), %[[VECTOR_PH]] ], [ [[TMP12:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[VEC_PHI3:%.*]] = phi <4 x i32> [ splat (i32 -2147483648), %[[VECTOR_PH]] ], [ [[TMP13:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[VEC_IND:%.*]] = phi <4 x i32> [ <i32 0, i32 1, i32 2, i32 3>, %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[STEP_ADD:%.*]] = add <4 x i32> [[VEC_IND]], splat (i32 4)
; CHECK-VF4IC4-NEXT:    [[STEP_ADD_2:%.*]] = add <4 x i32> [[STEP_ADD]], splat (i32 4)
; CHECK-VF4IC4-NEXT:    [[STEP_ADD_3:%.*]] = add <4 x i32> [[STEP_ADD_2]], splat (i32 4)
; CHECK-VF4IC4-NEXT:    [[TMP1:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[INDEX]]
; CHECK-VF4IC4-NEXT:    [[TMP3:%.*]] = getelementptr inbounds i64, ptr [[TMP1]], i32 4
; CHECK-VF4IC4-NEXT:    [[TMP4:%.*]] = getelementptr inbounds i64, ptr [[TMP1]], i32 8
; CHECK-VF4IC4-NEXT:    [[TMP5:%.*]] = getelementptr inbounds i64, ptr [[TMP1]], i32 12
; CHECK-VF4IC4-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x i64>, ptr [[TMP1]], align 8
; CHECK-VF4IC4-NEXT:    [[WIDE_LOAD4:%.*]] = load <4 x i64>, ptr [[TMP3]], align 8
; CHECK-VF4IC4-NEXT:    [[WIDE_LOAD5:%.*]] = load <4 x i64>, ptr [[TMP4]], align 8
; CHECK-VF4IC4-NEXT:    [[WIDE_LOAD6:%.*]] = load <4 x i64>, ptr [[TMP5]], align 8
; CHECK-VF4IC4-NEXT:    [[TMP6:%.*]] = icmp sgt <4 x i64> [[WIDE_LOAD]], splat (i64 3)
; CHECK-VF4IC4-NEXT:    [[TMP7:%.*]] = icmp sgt <4 x i64> [[WIDE_LOAD4]], splat (i64 3)
; CHECK-VF4IC4-NEXT:    [[TMP8:%.*]] = icmp sgt <4 x i64> [[WIDE_LOAD5]], splat (i64 3)
; CHECK-VF4IC4-NEXT:    [[TMP9:%.*]] = icmp sgt <4 x i64> [[WIDE_LOAD6]], splat (i64 3)
; CHECK-VF4IC4-NEXT:    [[TMP10]] = select <4 x i1> [[TMP6]], <4 x i32> [[VEC_IND]], <4 x i32> [[VEC_PHI]]
; CHECK-VF4IC4-NEXT:    [[TMP11]] = select <4 x i1> [[TMP7]], <4 x i32> [[STEP_ADD]], <4 x i32> [[VEC_PHI1]]
; CHECK-VF4IC4-NEXT:    [[TMP12]] = select <4 x i1> [[TMP8]], <4 x i32> [[STEP_ADD_2]], <4 x i32> [[VEC_PHI2]]
; CHECK-VF4IC4-NEXT:    [[TMP13]] = select <4 x i1> [[TMP9]], <4 x i32> [[STEP_ADD_3]], <4 x i32> [[VEC_PHI3]]
; CHECK-VF4IC4-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
; CHECK-VF4IC4-NEXT:    [[VEC_IND_NEXT]] = add <4 x i32> [[STEP_ADD_3]], splat (i32 4)
; CHECK-VF4IC4-NEXT:    [[TMP14:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-VF4IC4-NEXT:    br i1 [[TMP14]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK-VF4IC4:       [[MIDDLE_BLOCK]]:
; CHECK-VF4IC4-NEXT:    [[RDX_MINMAX:%.*]] = call <4 x i32> @llvm.smax.v4i32(<4 x i32> [[TMP10]], <4 x i32> [[TMP11]])
; CHECK-VF4IC4-NEXT:    [[RDX_MINMAX7:%.*]] = call <4 x i32> @llvm.smax.v4i32(<4 x i32> [[RDX_MINMAX]], <4 x i32> [[TMP12]])
; CHECK-VF4IC4-NEXT:    [[RDX_MINMAX8:%.*]] = call <4 x i32> @llvm.smax.v4i32(<4 x i32> [[RDX_MINMAX7]], <4 x i32> [[TMP13]])
; CHECK-VF4IC4-NEXT:    [[TMP15:%.*]] = call i32 @llvm.vector.reduce.smax.v4i32(<4 x i32> [[RDX_MINMAX8]])
; CHECK-VF4IC4-NEXT:    [[RDX_SELECT_CMP:%.*]] = icmp ne i32 [[TMP15]], -2147483648
; CHECK-VF4IC4-NEXT:    [[RDX_SELECT:%.*]] = select i1 [[RDX_SELECT_CMP]], i32 [[TMP15]], i32 331
; CHECK-VF4IC4-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-VF4IC4-NEXT:    br i1 [[CMP_N]], label %[[EXIT_LOOPEXIT:.*]], label %[[SCALAR_PH]]
; CHECK-VF4IC4:       [[SCALAR_PH]]:
; CHECK-VF4IC4-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[FOR_BODY_PREHEADER]] ]
; CHECK-VF4IC4-NEXT:    [[BC_MERGE_RDX:%.*]] = phi i32 [ [[RDX_SELECT]], %[[MIDDLE_BLOCK]] ], [ 331, %[[FOR_BODY_PREHEADER]] ]
; CHECK-VF4IC4-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF4IC4:       [[FOR_BODY]]:
; CHECK-VF4IC4-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[RDX:%.*]] = phi i32 [ [[BC_MERGE_RDX]], %[[SCALAR_PH]] ], [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[IV]]
; CHECK-VF4IC4-NEXT:    [[TMP16:%.*]] = load i64, ptr [[ARRAYIDX]], align 8
; CHECK-VF4IC4-NEXT:    [[CMP:%.*]] = icmp sgt i64 [[TMP16]], 3
; CHECK-VF4IC4-NEXT:    [[TMP17:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF4IC4-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP]], i32 [[TMP17]], i32 [[RDX]]
; CHECK-VF4IC4-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF4IC4-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], [[WIDE_TRIP_COUNT]]
; CHECK-VF4IC4-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT_LOOPEXIT]], label %[[FOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
; CHECK-VF4IC4:       [[EXIT_LOOPEXIT]]:
; CHECK-VF4IC4-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ], [ [[RDX_SELECT]], %[[MIDDLE_BLOCK]] ]
; CHECK-VF4IC4-NEXT:    br label %[[EXIT]]
; CHECK-VF4IC4:       [[EXIT]]:
; CHECK-VF4IC4-NEXT:    [[RDX_LCSSA:%.*]] = phi i32 [ 331, %[[ENTRY]] ], [ [[SPEC_SELECT_LCSSA]], %[[EXIT_LOOPEXIT]] ]
; CHECK-VF4IC4-NEXT:    ret i32 [[RDX_LCSSA]]
;
; CHECK-VF1IC4-LABEL: define i32 @select_icmp_const_truncated_iv_widened_exit(
; CHECK-VF1IC4-SAME: ptr [[A:%.*]], i32 [[N:%.*]]) {
; CHECK-VF1IC4-NEXT:  [[ENTRY:.*]]:
; CHECK-VF1IC4-NEXT:    [[CMP_SGT:%.*]] = icmp sgt i32 [[N]], 0
; CHECK-VF1IC4-NEXT:    br i1 [[CMP_SGT]], label %[[FOR_BODY_PREHEADER:.*]], label %[[EXIT:.*]]
; CHECK-VF1IC4:       [[FOR_BODY_PREHEADER]]:
; CHECK-VF1IC4-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[N]] to i64
; CHECK-VF1IC4-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], 4
; CHECK-VF1IC4-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK-VF1IC4:       [[VECTOR_PH]]:
; CHECK-VF1IC4-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], 4
; CHECK-VF1IC4-NEXT:    [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-VF1IC4-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK-VF1IC4:       [[VECTOR_BODY]]:
; CHECK-VF1IC4-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[VEC_PHI:%.*]] = phi i32 [ -2147483648, %[[VECTOR_PH]] ], [ [[TMP21:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[VEC_PHI1:%.*]] = phi i32 [ -2147483648, %[[VECTOR_PH]] ], [ [[TMP22:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[VEC_PHI2:%.*]] = phi i32 [ -2147483648, %[[VECTOR_PH]] ], [ [[TMP23:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[VEC_PHI3:%.*]] = phi i32 [ -2147483648, %[[VECTOR_PH]] ], [ [[TMP24:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[TMP1:%.*]] = add i64 [[INDEX]], 1
; CHECK-VF1IC4-NEXT:    [[TMP2:%.*]] = add i64 [[INDEX]], 2
; CHECK-VF1IC4-NEXT:    [[TMP3:%.*]] = add i64 [[INDEX]], 3
; CHECK-VF1IC4-NEXT:    [[TMP4:%.*]] = trunc i64 [[INDEX]] to i32
; CHECK-VF1IC4-NEXT:    [[TMP6:%.*]] = add i32 [[TMP4]], 1
; CHECK-VF1IC4-NEXT:    [[TMP7:%.*]] = add i32 [[TMP4]], 2
; CHECK-VF1IC4-NEXT:    [[TMP8:%.*]] = add i32 [[TMP4]], 3
; CHECK-VF1IC4-NEXT:    [[TMP9:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[INDEX]]
; CHECK-VF1IC4-NEXT:    [[TMP10:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP1]]
; CHECK-VF1IC4-NEXT:    [[TMP11:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP2]]
; CHECK-VF1IC4-NEXT:    [[TMP12:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP3]]
; CHECK-VF1IC4-NEXT:    [[TMP13:%.*]] = load i64, ptr [[TMP9]], align 8
; CHECK-VF1IC4-NEXT:    [[TMP14:%.*]] = load i64, ptr [[TMP10]], align 8
; CHECK-VF1IC4-NEXT:    [[TMP15:%.*]] = load i64, ptr [[TMP11]], align 8
; CHECK-VF1IC4-NEXT:    [[TMP16:%.*]] = load i64, ptr [[TMP12]], align 8
; CHECK-VF1IC4-NEXT:    [[TMP17:%.*]] = icmp sgt i64 [[TMP13]], 3
; CHECK-VF1IC4-NEXT:    [[TMP18:%.*]] = icmp sgt i64 [[TMP14]], 3
; CHECK-VF1IC4-NEXT:    [[TMP19:%.*]] = icmp sgt i64 [[TMP15]], 3
; CHECK-VF1IC4-NEXT:    [[TMP20:%.*]] = icmp sgt i64 [[TMP16]], 3
; CHECK-VF1IC4-NEXT:    [[TMP21]] = select i1 [[TMP17]], i32 [[TMP4]], i32 [[VEC_PHI]]
; CHECK-VF1IC4-NEXT:    [[TMP22]] = select i1 [[TMP18]], i32 [[TMP6]], i32 [[VEC_PHI1]]
; CHECK-VF1IC4-NEXT:    [[TMP23]] = select i1 [[TMP19]], i32 [[TMP7]], i32 [[VEC_PHI2]]
; CHECK-VF1IC4-NEXT:    [[TMP24]] = select i1 [[TMP20]], i32 [[TMP8]], i32 [[VEC_PHI3]]
; CHECK-VF1IC4-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-VF1IC4-NEXT:    [[TMP25:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-VF1IC4-NEXT:    br i1 [[TMP25]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK-VF1IC4:       [[MIDDLE_BLOCK]]:
; CHECK-VF1IC4-NEXT:    [[RDX_MINMAX:%.*]] = call i32 @llvm.smax.i32(i32 [[TMP21]], i32 [[TMP22]])
; CHECK-VF1IC4-NEXT:    [[RDX_MINMAX4:%.*]] = call i32 @llvm.smax.i32(i32 [[RDX_MINMAX]], i32 [[TMP23]])
; CHECK-VF1IC4-NEXT:    [[RDX_MINMAX5:%.*]] = call i32 @llvm.smax.i32(i32 [[RDX_MINMAX4]], i32 [[TMP24]])
; CHECK-VF1IC4-NEXT:    [[RDX_SELECT_CMP:%.*]] = icmp ne i32 [[RDX_MINMAX5]], -2147483648
; CHECK-VF1IC4-NEXT:    [[RDX_SELECT:%.*]] = select i1 [[RDX_SELECT_CMP]], i32 [[RDX_MINMAX5]], i32 331
; CHECK-VF1IC4-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-VF1IC4-NEXT:    br i1 [[CMP_N]], label %[[EXIT_LOOPEXIT:.*]], label %[[SCALAR_PH]]
; CHECK-VF1IC4:       [[SCALAR_PH]]:
; CHECK-VF1IC4-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[FOR_BODY_PREHEADER]] ]
; CHECK-VF1IC4-NEXT:    [[BC_MERGE_RDX:%.*]] = phi i32 [ [[RDX_SELECT]], %[[MIDDLE_BLOCK]] ], [ 331, %[[FOR_BODY_PREHEADER]] ]
; CHECK-VF1IC4-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF1IC4:       [[FOR_BODY]]:
; CHECK-VF1IC4-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[RDX:%.*]] = phi i32 [ [[BC_MERGE_RDX]], %[[SCALAR_PH]] ], [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[IV]]
; CHECK-VF1IC4-NEXT:    [[TMP26:%.*]] = load i64, ptr [[ARRAYIDX]], align 8
; CHECK-VF1IC4-NEXT:    [[CMP:%.*]] = icmp sgt i64 [[TMP26]], 3
; CHECK-VF1IC4-NEXT:    [[TMP27:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF1IC4-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP]], i32 [[TMP27]], i32 [[RDX]]
; CHECK-VF1IC4-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF1IC4-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], [[WIDE_TRIP_COUNT]]
; CHECK-VF1IC4-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT_LOOPEXIT]], label %[[FOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
; CHECK-VF1IC4:       [[EXIT_LOOPEXIT]]:
; CHECK-VF1IC4-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ], [ [[RDX_SELECT]], %[[MIDDLE_BLOCK]] ]
; CHECK-VF1IC4-NEXT:    br label %[[EXIT]]
; CHECK-VF1IC4:       [[EXIT]]:
; CHECK-VF1IC4-NEXT:    [[RDX_LCSSA:%.*]] = phi i32 [ 331, %[[ENTRY]] ], [ [[SPEC_SELECT_LCSSA]], %[[EXIT_LOOPEXIT]] ]
; CHECK-VF1IC4-NEXT:    ret i32 [[RDX_LCSSA]]
;
entry:
  %cmp.sgt = icmp sgt i32 %n, 0
  br i1 %cmp.sgt, label %for.body.preheader, label %exit

for.body.preheader:                               ; preds = %entry
  %wide.trip.count = zext i32 %n to i64
  br label %for.body

for.body:                                         ; preds = %for.body.preheader, %for.body
  %iv = phi i64 [ 0, %for.body.preheader ], [ %inc, %for.body ]
  %rdx = phi i32 [ 331, %for.body.preheader ], [ %spec.select, %for.body ]
  %arrayidx = getelementptr inbounds i64, ptr %a, i64 %iv
  %0 = load i64, ptr %arrayidx, align 8
  %cmp = icmp sgt i64 %0, 3
  %1 = trunc i64 %iv to i32
  %spec.select = select i1 %cmp, i32 %1, i32 %rdx
  %inc = add nuw nsw i64 %iv, 1
  %exitcond.not = icmp eq i64 %inc, %wide.trip.count
  br i1 %exitcond.not, label %exit, label %for.body

exit:                                            ; preds = %for.body, %entry
  %rdx.lcssa = phi i32 [ 331, %entry ], [ %spec.select, %for.body ]
  ret i32 %rdx.lcssa
}

; Without loop guard, the range analysis is also able to base on the constant
; trip count.
define i32 @select_icmp_const_truncated_iv_const_exit(ptr %a) {
; CHECK-VF4IC1-LABEL: define i32 @select_icmp_const_truncated_iv_const_exit(
; CHECK-VF4IC1-SAME: ptr [[A:%.*]]) {
; CHECK-VF4IC1-NEXT:  [[ENTRY:.*]]:
; CHECK-VF4IC1-NEXT:    br i1 false, label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK-VF4IC1:       [[VECTOR_PH]]:
; CHECK-VF4IC1-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK-VF4IC1:       [[VECTOR_BODY]]:
; CHECK-VF4IC1-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[VEC_PHI:%.*]] = phi <4 x i32> [ splat (i32 -2147483648), %[[VECTOR_PH]] ], [ [[TMP4:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[VEC_IND:%.*]] = phi <4 x i32> [ <i32 0, i32 1, i32 2, i32 3>, %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[TMP1:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[INDEX]]
; CHECK-VF4IC1-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x i64>, ptr [[TMP1]], align 8
; CHECK-VF4IC1-NEXT:    [[TMP3:%.*]] = icmp sgt <4 x i64> [[WIDE_LOAD]], splat (i64 3)
; CHECK-VF4IC1-NEXT:    [[TMP4]] = select <4 x i1> [[TMP3]], <4 x i32> [[VEC_IND]], <4 x i32> [[VEC_PHI]]
; CHECK-VF4IC1-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-VF4IC1-NEXT:    [[VEC_IND_NEXT]] = add <4 x i32> [[VEC_IND]], splat (i32 4)
; CHECK-VF4IC1-NEXT:    [[TMP5:%.*]] = icmp eq i64 [[INDEX_NEXT]], 20000
; CHECK-VF4IC1-NEXT:    br i1 [[TMP5]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK-VF4IC1:       [[MIDDLE_BLOCK]]:
; CHECK-VF4IC1-NEXT:    [[TMP6:%.*]] = call i32 @llvm.vector.reduce.smax.v4i32(<4 x i32> [[TMP4]])
; CHECK-VF4IC1-NEXT:    [[RDX_SELECT_CMP:%.*]] = icmp ne i32 [[TMP6]], -2147483648
; CHECK-VF4IC1-NEXT:    [[RDX_SELECT:%.*]] = select i1 [[RDX_SELECT_CMP]], i32 [[TMP6]], i32 331
; CHECK-VF4IC1-NEXT:    br label %[[EXIT:.*]]
; CHECK-VF4IC1:       [[SCALAR_PH]]:
; CHECK-VF4IC1-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ 0, %[[ENTRY]] ]
; CHECK-VF4IC1-NEXT:    [[BC_MERGE_RDX:%.*]] = phi i32 [ 331, %[[ENTRY]] ]
; CHECK-VF4IC1-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF4IC1:       [[FOR_BODY]]:
; CHECK-VF4IC1-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[RDX:%.*]] = phi i32 [ [[BC_MERGE_RDX]], %[[SCALAR_PH]] ], [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[IV]]
; CHECK-VF4IC1-NEXT:    [[TMP7:%.*]] = load i64, ptr [[ARRAYIDX]], align 8
; CHECK-VF4IC1-NEXT:    [[CMP:%.*]] = icmp sgt i64 [[TMP7]], 3
; CHECK-VF4IC1-NEXT:    [[TMP8:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF4IC1-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP]], i32 [[TMP8]], i32 [[RDX]]
; CHECK-VF4IC1-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF4IC1-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], 20000
; CHECK-VF4IC1-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT]], label %[[FOR_BODY]], !llvm.loop [[LOOP5:![0-9]+]]
; CHECK-VF4IC1:       [[EXIT]]:
; CHECK-VF4IC1-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ], [ [[RDX_SELECT]], %[[MIDDLE_BLOCK]] ]
; CHECK-VF4IC1-NEXT:    ret i32 [[SPEC_SELECT_LCSSA]]
;
; CHECK-VF4IC4-LABEL: define i32 @select_icmp_const_truncated_iv_const_exit(
; CHECK-VF4IC4-SAME: ptr [[A:%.*]]) {
; CHECK-VF4IC4-NEXT:  [[ENTRY:.*]]:
; CHECK-VF4IC4-NEXT:    br i1 false, label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK-VF4IC4:       [[VECTOR_PH]]:
; CHECK-VF4IC4-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK-VF4IC4:       [[VECTOR_BODY]]:
; CHECK-VF4IC4-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[VEC_PHI:%.*]] = phi <4 x i32> [ splat (i32 -2147483648), %[[VECTOR_PH]] ], [ [[TMP10:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[VEC_PHI1:%.*]] = phi <4 x i32> [ splat (i32 -2147483648), %[[VECTOR_PH]] ], [ [[TMP11:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[VEC_PHI2:%.*]] = phi <4 x i32> [ splat (i32 -2147483648), %[[VECTOR_PH]] ], [ [[TMP12:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[VEC_PHI3:%.*]] = phi <4 x i32> [ splat (i32 -2147483648), %[[VECTOR_PH]] ], [ [[TMP13:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[VEC_IND:%.*]] = phi <4 x i32> [ <i32 0, i32 1, i32 2, i32 3>, %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[STEP_ADD:%.*]] = add <4 x i32> [[VEC_IND]], splat (i32 4)
; CHECK-VF4IC4-NEXT:    [[STEP_ADD_2:%.*]] = add <4 x i32> [[STEP_ADD]], splat (i32 4)
; CHECK-VF4IC4-NEXT:    [[STEP_ADD_3:%.*]] = add <4 x i32> [[STEP_ADD_2]], splat (i32 4)
; CHECK-VF4IC4-NEXT:    [[TMP1:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[INDEX]]
; CHECK-VF4IC4-NEXT:    [[TMP3:%.*]] = getelementptr inbounds i64, ptr [[TMP1]], i32 4
; CHECK-VF4IC4-NEXT:    [[TMP4:%.*]] = getelementptr inbounds i64, ptr [[TMP1]], i32 8
; CHECK-VF4IC4-NEXT:    [[TMP5:%.*]] = getelementptr inbounds i64, ptr [[TMP1]], i32 12
; CHECK-VF4IC4-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x i64>, ptr [[TMP1]], align 8
; CHECK-VF4IC4-NEXT:    [[WIDE_LOAD4:%.*]] = load <4 x i64>, ptr [[TMP3]], align 8
; CHECK-VF4IC4-NEXT:    [[WIDE_LOAD5:%.*]] = load <4 x i64>, ptr [[TMP4]], align 8
; CHECK-VF4IC4-NEXT:    [[WIDE_LOAD6:%.*]] = load <4 x i64>, ptr [[TMP5]], align 8
; CHECK-VF4IC4-NEXT:    [[TMP6:%.*]] = icmp sgt <4 x i64> [[WIDE_LOAD]], splat (i64 3)
; CHECK-VF4IC4-NEXT:    [[TMP7:%.*]] = icmp sgt <4 x i64> [[WIDE_LOAD4]], splat (i64 3)
; CHECK-VF4IC4-NEXT:    [[TMP8:%.*]] = icmp sgt <4 x i64> [[WIDE_LOAD5]], splat (i64 3)
; CHECK-VF4IC4-NEXT:    [[TMP9:%.*]] = icmp sgt <4 x i64> [[WIDE_LOAD6]], splat (i64 3)
; CHECK-VF4IC4-NEXT:    [[TMP10]] = select <4 x i1> [[TMP6]], <4 x i32> [[VEC_IND]], <4 x i32> [[VEC_PHI]]
; CHECK-VF4IC4-NEXT:    [[TMP11]] = select <4 x i1> [[TMP7]], <4 x i32> [[STEP_ADD]], <4 x i32> [[VEC_PHI1]]
; CHECK-VF4IC4-NEXT:    [[TMP12]] = select <4 x i1> [[TMP8]], <4 x i32> [[STEP_ADD_2]], <4 x i32> [[VEC_PHI2]]
; CHECK-VF4IC4-NEXT:    [[TMP13]] = select <4 x i1> [[TMP9]], <4 x i32> [[STEP_ADD_3]], <4 x i32> [[VEC_PHI3]]
; CHECK-VF4IC4-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
; CHECK-VF4IC4-NEXT:    [[VEC_IND_NEXT]] = add <4 x i32> [[STEP_ADD_3]], splat (i32 4)
; CHECK-VF4IC4-NEXT:    [[TMP14:%.*]] = icmp eq i64 [[INDEX_NEXT]], 20000
; CHECK-VF4IC4-NEXT:    br i1 [[TMP14]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK-VF4IC4:       [[MIDDLE_BLOCK]]:
; CHECK-VF4IC4-NEXT:    [[RDX_MINMAX:%.*]] = call <4 x i32> @llvm.smax.v4i32(<4 x i32> [[TMP10]], <4 x i32> [[TMP11]])
; CHECK-VF4IC4-NEXT:    [[RDX_MINMAX7:%.*]] = call <4 x i32> @llvm.smax.v4i32(<4 x i32> [[RDX_MINMAX]], <4 x i32> [[TMP12]])
; CHECK-VF4IC4-NEXT:    [[RDX_MINMAX8:%.*]] = call <4 x i32> @llvm.smax.v4i32(<4 x i32> [[RDX_MINMAX7]], <4 x i32> [[TMP13]])
; CHECK-VF4IC4-NEXT:    [[TMP15:%.*]] = call i32 @llvm.vector.reduce.smax.v4i32(<4 x i32> [[RDX_MINMAX8]])
; CHECK-VF4IC4-NEXT:    [[RDX_SELECT_CMP:%.*]] = icmp ne i32 [[TMP15]], -2147483648
; CHECK-VF4IC4-NEXT:    [[RDX_SELECT:%.*]] = select i1 [[RDX_SELECT_CMP]], i32 [[TMP15]], i32 331
; CHECK-VF4IC4-NEXT:    br label %[[EXIT:.*]]
; CHECK-VF4IC4:       [[SCALAR_PH]]:
; CHECK-VF4IC4-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ 0, %[[ENTRY]] ]
; CHECK-VF4IC4-NEXT:    [[BC_MERGE_RDX:%.*]] = phi i32 [ 331, %[[ENTRY]] ]
; CHECK-VF4IC4-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF4IC4:       [[FOR_BODY]]:
; CHECK-VF4IC4-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[RDX:%.*]] = phi i32 [ [[BC_MERGE_RDX]], %[[SCALAR_PH]] ], [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[IV]]
; CHECK-VF4IC4-NEXT:    [[TMP16:%.*]] = load i64, ptr [[ARRAYIDX]], align 8
; CHECK-VF4IC4-NEXT:    [[CMP:%.*]] = icmp sgt i64 [[TMP16]], 3
; CHECK-VF4IC4-NEXT:    [[TMP17:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF4IC4-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP]], i32 [[TMP17]], i32 [[RDX]]
; CHECK-VF4IC4-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF4IC4-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], 20000
; CHECK-VF4IC4-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT]], label %[[FOR_BODY]], !llvm.loop [[LOOP5:![0-9]+]]
; CHECK-VF4IC4:       [[EXIT]]:
; CHECK-VF4IC4-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ], [ [[RDX_SELECT]], %[[MIDDLE_BLOCK]] ]
; CHECK-VF4IC4-NEXT:    ret i32 [[SPEC_SELECT_LCSSA]]
;
; CHECK-VF1IC4-LABEL: define i32 @select_icmp_const_truncated_iv_const_exit(
; CHECK-VF1IC4-SAME: ptr [[A:%.*]]) {
; CHECK-VF1IC4-NEXT:  [[ENTRY:.*]]:
; CHECK-VF1IC4-NEXT:    br i1 false, label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK-VF1IC4:       [[VECTOR_PH]]:
; CHECK-VF1IC4-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK-VF1IC4:       [[VECTOR_BODY]]:
; CHECK-VF1IC4-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[VEC_PHI:%.*]] = phi i32 [ -2147483648, %[[VECTOR_PH]] ], [ [[TMP21:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[VEC_PHI1:%.*]] = phi i32 [ -2147483648, %[[VECTOR_PH]] ], [ [[TMP22:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[VEC_PHI2:%.*]] = phi i32 [ -2147483648, %[[VECTOR_PH]] ], [ [[TMP23:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[VEC_PHI3:%.*]] = phi i32 [ -2147483648, %[[VECTOR_PH]] ], [ [[TMP24:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[TMP1:%.*]] = add i64 [[INDEX]], 1
; CHECK-VF1IC4-NEXT:    [[TMP2:%.*]] = add i64 [[INDEX]], 2
; CHECK-VF1IC4-NEXT:    [[TMP3:%.*]] = add i64 [[INDEX]], 3
; CHECK-VF1IC4-NEXT:    [[TMP4:%.*]] = trunc i64 [[INDEX]] to i32
; CHECK-VF1IC4-NEXT:    [[TMP6:%.*]] = add i32 [[TMP4]], 1
; CHECK-VF1IC4-NEXT:    [[TMP7:%.*]] = add i32 [[TMP4]], 2
; CHECK-VF1IC4-NEXT:    [[TMP8:%.*]] = add i32 [[TMP4]], 3
; CHECK-VF1IC4-NEXT:    [[TMP9:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[INDEX]]
; CHECK-VF1IC4-NEXT:    [[TMP10:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP1]]
; CHECK-VF1IC4-NEXT:    [[TMP11:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP2]]
; CHECK-VF1IC4-NEXT:    [[TMP12:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP3]]
; CHECK-VF1IC4-NEXT:    [[TMP13:%.*]] = load i64, ptr [[TMP9]], align 8
; CHECK-VF1IC4-NEXT:    [[TMP14:%.*]] = load i64, ptr [[TMP10]], align 8
; CHECK-VF1IC4-NEXT:    [[TMP15:%.*]] = load i64, ptr [[TMP11]], align 8
; CHECK-VF1IC4-NEXT:    [[TMP16:%.*]] = load i64, ptr [[TMP12]], align 8
; CHECK-VF1IC4-NEXT:    [[TMP17:%.*]] = icmp sgt i64 [[TMP13]], 3
; CHECK-VF1IC4-NEXT:    [[TMP18:%.*]] = icmp sgt i64 [[TMP14]], 3
; CHECK-VF1IC4-NEXT:    [[TMP19:%.*]] = icmp sgt i64 [[TMP15]], 3
; CHECK-VF1IC4-NEXT:    [[TMP20:%.*]] = icmp sgt i64 [[TMP16]], 3
; CHECK-VF1IC4-NEXT:    [[TMP21]] = select i1 [[TMP17]], i32 [[TMP4]], i32 [[VEC_PHI]]
; CHECK-VF1IC4-NEXT:    [[TMP22]] = select i1 [[TMP18]], i32 [[TMP6]], i32 [[VEC_PHI1]]
; CHECK-VF1IC4-NEXT:    [[TMP23]] = select i1 [[TMP19]], i32 [[TMP7]], i32 [[VEC_PHI2]]
; CHECK-VF1IC4-NEXT:    [[TMP24]] = select i1 [[TMP20]], i32 [[TMP8]], i32 [[VEC_PHI3]]
; CHECK-VF1IC4-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-VF1IC4-NEXT:    [[TMP25:%.*]] = icmp eq i64 [[INDEX_NEXT]], 20000
; CHECK-VF1IC4-NEXT:    br i1 [[TMP25]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK-VF1IC4:       [[MIDDLE_BLOCK]]:
; CHECK-VF1IC4-NEXT:    [[RDX_MINMAX:%.*]] = call i32 @llvm.smax.i32(i32 [[TMP21]], i32 [[TMP22]])
; CHECK-VF1IC4-NEXT:    [[RDX_MINMAX4:%.*]] = call i32 @llvm.smax.i32(i32 [[RDX_MINMAX]], i32 [[TMP23]])
; CHECK-VF1IC4-NEXT:    [[RDX_MINMAX5:%.*]] = call i32 @llvm.smax.i32(i32 [[RDX_MINMAX4]], i32 [[TMP24]])
; CHECK-VF1IC4-NEXT:    [[RDX_SELECT_CMP:%.*]] = icmp ne i32 [[RDX_MINMAX5]], -2147483648
; CHECK-VF1IC4-NEXT:    [[RDX_SELECT:%.*]] = select i1 [[RDX_SELECT_CMP]], i32 [[RDX_MINMAX5]], i32 331
; CHECK-VF1IC4-NEXT:    br label %[[EXIT:.*]]
; CHECK-VF1IC4:       [[SCALAR_PH]]:
; CHECK-VF1IC4-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ 0, %[[ENTRY]] ]
; CHECK-VF1IC4-NEXT:    [[BC_MERGE_RDX:%.*]] = phi i32 [ 331, %[[ENTRY]] ]
; CHECK-VF1IC4-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF1IC4:       [[FOR_BODY]]:
; CHECK-VF1IC4-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[RDX:%.*]] = phi i32 [ [[BC_MERGE_RDX]], %[[SCALAR_PH]] ], [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[IV]]
; CHECK-VF1IC4-NEXT:    [[TMP26:%.*]] = load i64, ptr [[ARRAYIDX]], align 8
; CHECK-VF1IC4-NEXT:    [[CMP:%.*]] = icmp sgt i64 [[TMP26]], 3
; CHECK-VF1IC4-NEXT:    [[TMP27:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF1IC4-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP]], i32 [[TMP27]], i32 [[RDX]]
; CHECK-VF1IC4-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF1IC4-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], 20000
; CHECK-VF1IC4-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT]], label %[[FOR_BODY]], !llvm.loop [[LOOP5:![0-9]+]]
; CHECK-VF1IC4:       [[EXIT]]:
; CHECK-VF1IC4-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ], [ [[RDX_SELECT]], %[[MIDDLE_BLOCK]] ]
; CHECK-VF1IC4-NEXT:    ret i32 [[SPEC_SELECT_LCSSA]]
;
entry:
  br label %for.body

for.body:                                         ; preds = %entry, %for.body
  %iv = phi i64 [ 0, %entry ], [ %inc, %for.body ]
  %rdx = phi i32 [ 331, %entry ], [ %spec.select, %for.body ]
  %arrayidx = getelementptr inbounds i64, ptr %a, i64 %iv
  %0 = load i64, ptr %arrayidx, align 8
  %cmp = icmp sgt i64 %0, 3
  %1 = trunc i64 %iv to i32
  %spec.select = select i1 %cmp, i32 %1, i32 %rdx
  %inc = add nuw nsw i64 %iv, 1
  %exitcond.not = icmp eq i64 %inc, 20000
  br i1 %exitcond.not, label %exit, label %for.body

exit:                                           ; preds = %for.body
  ret i32 %spec.select
}

; Without loop guard, the maximum constant trip count that can be vectorized is
; the signed maximum value of reduction type.
define i32 @select_fcmp_max_valid_const_ub(ptr %a) {
; CHECK-VF4IC1-LABEL: define i32 @select_fcmp_max_valid_const_ub(
; CHECK-VF4IC1-SAME: ptr [[A:%.*]]) {
; CHECK-VF4IC1-NEXT:  [[ENTRY:.*]]:
; CHECK-VF4IC1-NEXT:    br i1 false, label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK-VF4IC1:       [[VECTOR_PH]]:
; CHECK-VF4IC1-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK-VF4IC1:       [[VECTOR_BODY]]:
; CHECK-VF4IC1-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[VEC_PHI:%.*]] = phi <4 x i32> [ splat (i32 -2147483648), %[[VECTOR_PH]] ], [ [[TMP4:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[VEC_IND:%.*]] = phi <4 x i32> [ <i32 0, i32 1, i32 2, i32 3>, %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[TMP1:%.*]] = getelementptr inbounds float, ptr [[A]], i64 [[INDEX]]
; CHECK-VF4IC1-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x float>, ptr [[TMP1]], align 4
; CHECK-VF4IC1-NEXT:    [[TMP3:%.*]] = fcmp fast olt <4 x float> [[WIDE_LOAD]], zeroinitializer
; CHECK-VF4IC1-NEXT:    [[TMP4]] = select <4 x i1> [[TMP3]], <4 x i32> [[VEC_IND]], <4 x i32> [[VEC_PHI]]
; CHECK-VF4IC1-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-VF4IC1-NEXT:    [[VEC_IND_NEXT]] = add <4 x i32> [[VEC_IND]], splat (i32 4)
; CHECK-VF4IC1-NEXT:    [[TMP5:%.*]] = icmp eq i64 [[INDEX_NEXT]], 2147483648
; CHECK-VF4IC1-NEXT:    br i1 [[TMP5]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK-VF4IC1:       [[MIDDLE_BLOCK]]:
; CHECK-VF4IC1-NEXT:    [[TMP6:%.*]] = call i32 @llvm.vector.reduce.smax.v4i32(<4 x i32> [[TMP4]])
; CHECK-VF4IC1-NEXT:    [[RDX_SELECT_CMP:%.*]] = icmp ne i32 [[TMP6]], -2147483648
; CHECK-VF4IC1-NEXT:    [[RDX_SELECT:%.*]] = select i1 [[RDX_SELECT_CMP]], i32 [[TMP6]], i32 -1
; CHECK-VF4IC1-NEXT:    br label %[[EXIT:.*]]
; CHECK-VF4IC1:       [[SCALAR_PH]]:
; CHECK-VF4IC1-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ 0, %[[ENTRY]] ]
; CHECK-VF4IC1-NEXT:    [[BC_MERGE_RDX:%.*]] = phi i32 [ -1, %[[ENTRY]] ]
; CHECK-VF4IC1-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF4IC1:       [[FOR_BODY]]:
; CHECK-VF4IC1-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[RDX:%.*]] = phi i32 [ [[BC_MERGE_RDX]], %[[SCALAR_PH]] ], [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds float, ptr [[A]], i64 [[IV]]
; CHECK-VF4IC1-NEXT:    [[TMP7:%.*]] = load float, ptr [[ARRAYIDX]], align 4
; CHECK-VF4IC1-NEXT:    [[CMP:%.*]] = fcmp fast olt float [[TMP7]], 0.000000e+00
; CHECK-VF4IC1-NEXT:    [[TMP8:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF4IC1-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP]], i32 [[TMP8]], i32 [[RDX]]
; CHECK-VF4IC1-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF4IC1-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], 2147483648
; CHECK-VF4IC1-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT]], label %[[FOR_BODY]], !llvm.loop [[LOOP7:![0-9]+]]
; CHECK-VF4IC1:       [[EXIT]]:
; CHECK-VF4IC1-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ], [ [[RDX_SELECT]], %[[MIDDLE_BLOCK]] ]
; CHECK-VF4IC1-NEXT:    ret i32 [[SPEC_SELECT_LCSSA]]
;
; CHECK-VF4IC4-LABEL: define i32 @select_fcmp_max_valid_const_ub(
; CHECK-VF4IC4-SAME: ptr [[A:%.*]]) {
; CHECK-VF4IC4-NEXT:  [[ENTRY:.*]]:
; CHECK-VF4IC4-NEXT:    br i1 false, label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK-VF4IC4:       [[VECTOR_PH]]:
; CHECK-VF4IC4-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK-VF4IC4:       [[VECTOR_BODY]]:
; CHECK-VF4IC4-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[VEC_PHI:%.*]] = phi <4 x i32> [ splat (i32 -2147483648), %[[VECTOR_PH]] ], [ [[TMP10:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[VEC_PHI1:%.*]] = phi <4 x i32> [ splat (i32 -2147483648), %[[VECTOR_PH]] ], [ [[TMP11:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[VEC_PHI2:%.*]] = phi <4 x i32> [ splat (i32 -2147483648), %[[VECTOR_PH]] ], [ [[TMP12:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[VEC_PHI3:%.*]] = phi <4 x i32> [ splat (i32 -2147483648), %[[VECTOR_PH]] ], [ [[TMP13:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[VEC_IND:%.*]] = phi <4 x i32> [ <i32 0, i32 1, i32 2, i32 3>, %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[STEP_ADD:%.*]] = add <4 x i32> [[VEC_IND]], splat (i32 4)
; CHECK-VF4IC4-NEXT:    [[STEP_ADD_2:%.*]] = add <4 x i32> [[STEP_ADD]], splat (i32 4)
; CHECK-VF4IC4-NEXT:    [[STEP_ADD_3:%.*]] = add <4 x i32> [[STEP_ADD_2]], splat (i32 4)
; CHECK-VF4IC4-NEXT:    [[TMP1:%.*]] = getelementptr inbounds float, ptr [[A]], i64 [[INDEX]]
; CHECK-VF4IC4-NEXT:    [[TMP3:%.*]] = getelementptr inbounds float, ptr [[TMP1]], i32 4
; CHECK-VF4IC4-NEXT:    [[TMP4:%.*]] = getelementptr inbounds float, ptr [[TMP1]], i32 8
; CHECK-VF4IC4-NEXT:    [[TMP5:%.*]] = getelementptr inbounds float, ptr [[TMP1]], i32 12
; CHECK-VF4IC4-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x float>, ptr [[TMP1]], align 4
; CHECK-VF4IC4-NEXT:    [[WIDE_LOAD4:%.*]] = load <4 x float>, ptr [[TMP3]], align 4
; CHECK-VF4IC4-NEXT:    [[WIDE_LOAD5:%.*]] = load <4 x float>, ptr [[TMP4]], align 4
; CHECK-VF4IC4-NEXT:    [[WIDE_LOAD6:%.*]] = load <4 x float>, ptr [[TMP5]], align 4
; CHECK-VF4IC4-NEXT:    [[TMP6:%.*]] = fcmp fast olt <4 x float> [[WIDE_LOAD]], zeroinitializer
; CHECK-VF4IC4-NEXT:    [[TMP7:%.*]] = fcmp fast olt <4 x float> [[WIDE_LOAD4]], zeroinitializer
; CHECK-VF4IC4-NEXT:    [[TMP8:%.*]] = fcmp fast olt <4 x float> [[WIDE_LOAD5]], zeroinitializer
; CHECK-VF4IC4-NEXT:    [[TMP9:%.*]] = fcmp fast olt <4 x float> [[WIDE_LOAD6]], zeroinitializer
; CHECK-VF4IC4-NEXT:    [[TMP10]] = select <4 x i1> [[TMP6]], <4 x i32> [[VEC_IND]], <4 x i32> [[VEC_PHI]]
; CHECK-VF4IC4-NEXT:    [[TMP11]] = select <4 x i1> [[TMP7]], <4 x i32> [[STEP_ADD]], <4 x i32> [[VEC_PHI1]]
; CHECK-VF4IC4-NEXT:    [[TMP12]] = select <4 x i1> [[TMP8]], <4 x i32> [[STEP_ADD_2]], <4 x i32> [[VEC_PHI2]]
; CHECK-VF4IC4-NEXT:    [[TMP13]] = select <4 x i1> [[TMP9]], <4 x i32> [[STEP_ADD_3]], <4 x i32> [[VEC_PHI3]]
; CHECK-VF4IC4-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
; CHECK-VF4IC4-NEXT:    [[VEC_IND_NEXT]] = add <4 x i32> [[STEP_ADD_3]], splat (i32 4)
; CHECK-VF4IC4-NEXT:    [[TMP14:%.*]] = icmp eq i64 [[INDEX_NEXT]], 2147483648
; CHECK-VF4IC4-NEXT:    br i1 [[TMP14]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK-VF4IC4:       [[MIDDLE_BLOCK]]:
; CHECK-VF4IC4-NEXT:    [[RDX_MINMAX:%.*]] = call <4 x i32> @llvm.smax.v4i32(<4 x i32> [[TMP10]], <4 x i32> [[TMP11]])
; CHECK-VF4IC4-NEXT:    [[RDX_MINMAX7:%.*]] = call <4 x i32> @llvm.smax.v4i32(<4 x i32> [[RDX_MINMAX]], <4 x i32> [[TMP12]])
; CHECK-VF4IC4-NEXT:    [[RDX_MINMAX8:%.*]] = call <4 x i32> @llvm.smax.v4i32(<4 x i32> [[RDX_MINMAX7]], <4 x i32> [[TMP13]])
; CHECK-VF4IC4-NEXT:    [[TMP15:%.*]] = call i32 @llvm.vector.reduce.smax.v4i32(<4 x i32> [[RDX_MINMAX8]])
; CHECK-VF4IC4-NEXT:    [[RDX_SELECT_CMP:%.*]] = icmp ne i32 [[TMP15]], -2147483648
; CHECK-VF4IC4-NEXT:    [[RDX_SELECT:%.*]] = select i1 [[RDX_SELECT_CMP]], i32 [[TMP15]], i32 -1
; CHECK-VF4IC4-NEXT:    br label %[[EXIT:.*]]
; CHECK-VF4IC4:       [[SCALAR_PH]]:
; CHECK-VF4IC4-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ 0, %[[ENTRY]] ]
; CHECK-VF4IC4-NEXT:    [[BC_MERGE_RDX:%.*]] = phi i32 [ -1, %[[ENTRY]] ]
; CHECK-VF4IC4-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF4IC4:       [[FOR_BODY]]:
; CHECK-VF4IC4-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[RDX:%.*]] = phi i32 [ [[BC_MERGE_RDX]], %[[SCALAR_PH]] ], [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds float, ptr [[A]], i64 [[IV]]
; CHECK-VF4IC4-NEXT:    [[TMP16:%.*]] = load float, ptr [[ARRAYIDX]], align 4
; CHECK-VF4IC4-NEXT:    [[CMP:%.*]] = fcmp fast olt float [[TMP16]], 0.000000e+00
; CHECK-VF4IC4-NEXT:    [[TMP17:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF4IC4-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP]], i32 [[TMP17]], i32 [[RDX]]
; CHECK-VF4IC4-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF4IC4-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], 2147483648
; CHECK-VF4IC4-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT]], label %[[FOR_BODY]], !llvm.loop [[LOOP7:![0-9]+]]
; CHECK-VF4IC4:       [[EXIT]]:
; CHECK-VF4IC4-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ], [ [[RDX_SELECT]], %[[MIDDLE_BLOCK]] ]
; CHECK-VF4IC4-NEXT:    ret i32 [[SPEC_SELECT_LCSSA]]
;
; CHECK-VF1IC4-LABEL: define i32 @select_fcmp_max_valid_const_ub(
; CHECK-VF1IC4-SAME: ptr [[A:%.*]]) {
; CHECK-VF1IC4-NEXT:  [[ENTRY:.*]]:
; CHECK-VF1IC4-NEXT:    br i1 false, label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK-VF1IC4:       [[VECTOR_PH]]:
; CHECK-VF1IC4-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK-VF1IC4:       [[VECTOR_BODY]]:
; CHECK-VF1IC4-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[VEC_PHI:%.*]] = phi i32 [ -2147483648, %[[VECTOR_PH]] ], [ [[TMP21:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[VEC_PHI1:%.*]] = phi i32 [ -2147483648, %[[VECTOR_PH]] ], [ [[TMP22:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[VEC_PHI2:%.*]] = phi i32 [ -2147483648, %[[VECTOR_PH]] ], [ [[TMP23:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[VEC_PHI3:%.*]] = phi i32 [ -2147483648, %[[VECTOR_PH]] ], [ [[TMP24:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[TMP1:%.*]] = add i64 [[INDEX]], 1
; CHECK-VF1IC4-NEXT:    [[TMP2:%.*]] = add i64 [[INDEX]], 2
; CHECK-VF1IC4-NEXT:    [[TMP3:%.*]] = add i64 [[INDEX]], 3
; CHECK-VF1IC4-NEXT:    [[TMP4:%.*]] = trunc i64 [[INDEX]] to i32
; CHECK-VF1IC4-NEXT:    [[TMP6:%.*]] = add i32 [[TMP4]], 1
; CHECK-VF1IC4-NEXT:    [[TMP7:%.*]] = add i32 [[TMP4]], 2
; CHECK-VF1IC4-NEXT:    [[TMP8:%.*]] = add i32 [[TMP4]], 3
; CHECK-VF1IC4-NEXT:    [[TMP9:%.*]] = getelementptr inbounds float, ptr [[A]], i64 [[INDEX]]
; CHECK-VF1IC4-NEXT:    [[TMP10:%.*]] = getelementptr inbounds float, ptr [[A]], i64 [[TMP1]]
; CHECK-VF1IC4-NEXT:    [[TMP11:%.*]] = getelementptr inbounds float, ptr [[A]], i64 [[TMP2]]
; CHECK-VF1IC4-NEXT:    [[TMP12:%.*]] = getelementptr inbounds float, ptr [[A]], i64 [[TMP3]]
; CHECK-VF1IC4-NEXT:    [[TMP13:%.*]] = load float, ptr [[TMP9]], align 4
; CHECK-VF1IC4-NEXT:    [[TMP14:%.*]] = load float, ptr [[TMP10]], align 4
; CHECK-VF1IC4-NEXT:    [[TMP15:%.*]] = load float, ptr [[TMP11]], align 4
; CHECK-VF1IC4-NEXT:    [[TMP16:%.*]] = load float, ptr [[TMP12]], align 4
; CHECK-VF1IC4-NEXT:    [[TMP17:%.*]] = fcmp fast olt float [[TMP13]], 0.000000e+00
; CHECK-VF1IC4-NEXT:    [[TMP18:%.*]] = fcmp fast olt float [[TMP14]], 0.000000e+00
; CHECK-VF1IC4-NEXT:    [[TMP19:%.*]] = fcmp fast olt float [[TMP15]], 0.000000e+00
; CHECK-VF1IC4-NEXT:    [[TMP20:%.*]] = fcmp fast olt float [[TMP16]], 0.000000e+00
; CHECK-VF1IC4-NEXT:    [[TMP21]] = select i1 [[TMP17]], i32 [[TMP4]], i32 [[VEC_PHI]]
; CHECK-VF1IC4-NEXT:    [[TMP22]] = select i1 [[TMP18]], i32 [[TMP6]], i32 [[VEC_PHI1]]
; CHECK-VF1IC4-NEXT:    [[TMP23]] = select i1 [[TMP19]], i32 [[TMP7]], i32 [[VEC_PHI2]]
; CHECK-VF1IC4-NEXT:    [[TMP24]] = select i1 [[TMP20]], i32 [[TMP8]], i32 [[VEC_PHI3]]
; CHECK-VF1IC4-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-VF1IC4-NEXT:    [[TMP25:%.*]] = icmp eq i64 [[INDEX_NEXT]], 2147483648
; CHECK-VF1IC4-NEXT:    br i1 [[TMP25]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK-VF1IC4:       [[MIDDLE_BLOCK]]:
; CHECK-VF1IC4-NEXT:    [[RDX_MINMAX:%.*]] = call i32 @llvm.smax.i32(i32 [[TMP21]], i32 [[TMP22]])
; CHECK-VF1IC4-NEXT:    [[RDX_MINMAX4:%.*]] = call i32 @llvm.smax.i32(i32 [[RDX_MINMAX]], i32 [[TMP23]])
; CHECK-VF1IC4-NEXT:    [[RDX_MINMAX5:%.*]] = call i32 @llvm.smax.i32(i32 [[RDX_MINMAX4]], i32 [[TMP24]])
; CHECK-VF1IC4-NEXT:    [[RDX_SELECT_CMP:%.*]] = icmp ne i32 [[RDX_MINMAX5]], -2147483648
; CHECK-VF1IC4-NEXT:    [[RDX_SELECT:%.*]] = select i1 [[RDX_SELECT_CMP]], i32 [[RDX_MINMAX5]], i32 -1
; CHECK-VF1IC4-NEXT:    br label %[[EXIT:.*]]
; CHECK-VF1IC4:       [[SCALAR_PH]]:
; CHECK-VF1IC4-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ 0, %[[ENTRY]] ]
; CHECK-VF1IC4-NEXT:    [[BC_MERGE_RDX:%.*]] = phi i32 [ -1, %[[ENTRY]] ]
; CHECK-VF1IC4-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF1IC4:       [[FOR_BODY]]:
; CHECK-VF1IC4-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[RDX:%.*]] = phi i32 [ [[BC_MERGE_RDX]], %[[SCALAR_PH]] ], [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds float, ptr [[A]], i64 [[IV]]
; CHECK-VF1IC4-NEXT:    [[TMP26:%.*]] = load float, ptr [[ARRAYIDX]], align 4
; CHECK-VF1IC4-NEXT:    [[CMP:%.*]] = fcmp fast olt float [[TMP26]], 0.000000e+00
; CHECK-VF1IC4-NEXT:    [[TMP27:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF1IC4-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP]], i32 [[TMP27]], i32 [[RDX]]
; CHECK-VF1IC4-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF1IC4-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], 2147483648
; CHECK-VF1IC4-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT]], label %[[FOR_BODY]], !llvm.loop [[LOOP7:![0-9]+]]
; CHECK-VF1IC4:       [[EXIT]]:
; CHECK-VF1IC4-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ], [ [[RDX_SELECT]], %[[MIDDLE_BLOCK]] ]
; CHECK-VF1IC4-NEXT:    ret i32 [[SPEC_SELECT_LCSSA]]
;
entry:
  br label %for.body

for.body:                                        ; preds = %entry, %for.body
  %iv = phi i64 [ 0, %entry ], [ %inc, %for.body ]
  %rdx = phi i32 [ -1, %entry ], [ %spec.select, %for.body ]
  %arrayidx = getelementptr inbounds float, ptr %a, i64 %iv
  %0 = load float, ptr %arrayidx, align 4
  %cmp = fcmp fast olt float %0, 0.000000e+00
  %1 = trunc i64 %iv to i32
  %spec.select = select i1 %cmp, i32 %1, i32 %rdx
  %inc = add nuw nsw i64 %iv, 1
  %exitcond.not = icmp eq i64 %inc, 2147483648
  br i1 %exitcond.not, label %exit, label %for.body

exit:                                            ; preds = %for.body
  ret i32 %spec.select
}

; The construct that are introduced by IndVarSimplify is:
;   %1 = trunc i64 %iv to i32
; The loop exit condition is a constant that overflows signed i32,
; but not unsigned i32:
;   %exitcond.not = icmp eq i64 %inc, 4294967294
; Hence, we can vectorize with the unsigned variant of FindLastIV.
define i32 @select_icmp_truncated_unsigned_iv_range(ptr %a) {
; CHECK-VF4IC1-LABEL: define i32 @select_icmp_truncated_unsigned_iv_range(
; CHECK-VF4IC1-SAME: ptr [[A:%.*]]) {
; CHECK-VF4IC1-NEXT:  [[ENTRY:.*]]:
; CHECK-VF4IC1-NEXT:    br i1 false, label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK-VF4IC1:       [[VECTOR_PH]]:
; CHECK-VF4IC1-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK-VF4IC1:       [[VECTOR_BODY]]:
; CHECK-VF4IC1-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[VEC_PHI:%.*]] = phi <4 x i32> [ zeroinitializer, %[[VECTOR_PH]] ], [ [[TMP3:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[VEC_IND:%.*]] = phi <4 x i32> [ <i32 2147483646, i32 2147483647, i32 -2147483648, i32 -2147483647>, %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[IV:%.*]] = add i64 2147483646, [[INDEX]]
; CHECK-VF4IC1-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
; CHECK-VF4IC1-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[ARRAYIDX]], align 4
; CHECK-VF4IC1-NEXT:    [[TMP2:%.*]] = icmp sgt <4 x i32> [[WIDE_LOAD]], splat (i32 3)
; CHECK-VF4IC1-NEXT:    [[TMP3]] = select <4 x i1> [[TMP2]], <4 x i32> [[VEC_IND]], <4 x i32> [[VEC_PHI]]
; CHECK-VF4IC1-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-VF4IC1-NEXT:    [[VEC_IND_NEXT]] = add <4 x i32> [[VEC_IND]], splat (i32 4)
; CHECK-VF4IC1-NEXT:    [[TMP4:%.*]] = icmp eq i64 [[INDEX_NEXT]], 2147483648
; CHECK-VF4IC1-NEXT:    br i1 [[TMP4]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]]
; CHECK-VF4IC1:       [[MIDDLE_BLOCK]]:
; CHECK-VF4IC1-NEXT:    [[TMP5:%.*]] = call i32 @llvm.vector.reduce.umax.v4i32(<4 x i32> [[TMP3]])
; CHECK-VF4IC1-NEXT:    [[RDX_SELECT_CMP:%.*]] = icmp ne i32 [[TMP5]], 0
; CHECK-VF4IC1-NEXT:    [[RDX_SELECT:%.*]] = select i1 [[RDX_SELECT_CMP]], i32 [[TMP5]], i32 331
; CHECK-VF4IC1-NEXT:    br label %[[EXIT:.*]]
; CHECK-VF4IC1:       [[SCALAR_PH]]:
; CHECK-VF4IC1-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ 2147483646, %[[ENTRY]] ]
; CHECK-VF4IC1-NEXT:    [[BC_MERGE_RDX:%.*]] = phi i32 [ 331, %[[ENTRY]] ]
; CHECK-VF4IC1-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF4IC1:       [[FOR_BODY]]:
; CHECK-VF4IC1-NEXT:    [[IV1:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[RDX:%.*]] = phi i32 [ [[BC_MERGE_RDX]], %[[SCALAR_PH]] ], [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[ARRAYIDX1:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV1]]
; CHECK-VF4IC1-NEXT:    [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX1]], align 4
; CHECK-VF4IC1-NEXT:    [[CMP:%.*]] = icmp sgt i32 [[TMP0]], 3
; CHECK-VF4IC1-NEXT:    [[CONV:%.*]] = trunc i64 [[IV1]] to i32
; CHECK-VF4IC1-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP]], i32 [[CONV]], i32 [[RDX]]
; CHECK-VF4IC1-NEXT:    [[INC]] = add nuw nsw i64 [[IV1]], 1
; CHECK-VF4IC1-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], 4294967294
; CHECK-VF4IC1-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT]], label %[[FOR_BODY]], !llvm.loop [[LOOP9:![0-9]+]]
; CHECK-VF4IC1:       [[EXIT]]:
; CHECK-VF4IC1-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ], [ [[RDX_SELECT]], %[[MIDDLE_BLOCK]] ]
; CHECK-VF4IC1-NEXT:    ret i32 [[SPEC_SELECT_LCSSA]]
;
; CHECK-VF4IC4-LABEL: define i32 @select_icmp_truncated_unsigned_iv_range(
; CHECK-VF4IC4-SAME: ptr [[A:%.*]]) {
; CHECK-VF4IC4-NEXT:  [[ENTRY:.*]]:
; CHECK-VF4IC4-NEXT:    br i1 false, label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK-VF4IC4:       [[VECTOR_PH]]:
; CHECK-VF4IC4-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK-VF4IC4:       [[VECTOR_BODY]]:
; CHECK-VF4IC4-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[VEC_PHI:%.*]] = phi <4 x i32> [ zeroinitializer, %[[VECTOR_PH]] ], [ [[TMP9:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[VEC_PHI1:%.*]] = phi <4 x i32> [ zeroinitializer, %[[VECTOR_PH]] ], [ [[TMP10:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[VEC_PHI2:%.*]] = phi <4 x i32> [ zeroinitializer, %[[VECTOR_PH]] ], [ [[TMP11:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[VEC_PHI3:%.*]] = phi <4 x i32> [ zeroinitializer, %[[VECTOR_PH]] ], [ [[TMP12:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[VEC_IND:%.*]] = phi <4 x i32> [ <i32 2147483646, i32 2147483647, i32 -2147483648, i32 -2147483647>, %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[STEP_ADD:%.*]] = add <4 x i32> [[VEC_IND]], splat (i32 4)
; CHECK-VF4IC4-NEXT:    [[STEP_ADD_2:%.*]] = add <4 x i32> [[STEP_ADD]], splat (i32 4)
; CHECK-VF4IC4-NEXT:    [[STEP_ADD_3:%.*]] = add <4 x i32> [[STEP_ADD_2]], splat (i32 4)
; CHECK-VF4IC4-NEXT:    [[OFFSET_IDX:%.*]] = add i64 2147483646, [[INDEX]]
; CHECK-VF4IC4-NEXT:    [[TMP0:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[OFFSET_IDX]]
; CHECK-VF4IC4-NEXT:    [[TMP2:%.*]] = getelementptr inbounds i32, ptr [[TMP0]], i32 4
; CHECK-VF4IC4-NEXT:    [[TMP3:%.*]] = getelementptr inbounds i32, ptr [[TMP0]], i32 8
; CHECK-VF4IC4-NEXT:    [[TMP4:%.*]] = getelementptr inbounds i32, ptr [[TMP0]], i32 12
; CHECK-VF4IC4-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP0]], align 4
; CHECK-VF4IC4-NEXT:    [[WIDE_LOAD4:%.*]] = load <4 x i32>, ptr [[TMP2]], align 4
; CHECK-VF4IC4-NEXT:    [[WIDE_LOAD5:%.*]] = load <4 x i32>, ptr [[TMP3]], align 4
; CHECK-VF4IC4-NEXT:    [[WIDE_LOAD6:%.*]] = load <4 x i32>, ptr [[TMP4]], align 4
; CHECK-VF4IC4-NEXT:    [[TMP5:%.*]] = icmp sgt <4 x i32> [[WIDE_LOAD]], splat (i32 3)
; CHECK-VF4IC4-NEXT:    [[TMP6:%.*]] = icmp sgt <4 x i32> [[WIDE_LOAD4]], splat (i32 3)
; CHECK-VF4IC4-NEXT:    [[TMP7:%.*]] = icmp sgt <4 x i32> [[WIDE_LOAD5]], splat (i32 3)
; CHECK-VF4IC4-NEXT:    [[TMP8:%.*]] = icmp sgt <4 x i32> [[WIDE_LOAD6]], splat (i32 3)
; CHECK-VF4IC4-NEXT:    [[TMP9]] = select <4 x i1> [[TMP5]], <4 x i32> [[VEC_IND]], <4 x i32> [[VEC_PHI]]
; CHECK-VF4IC4-NEXT:    [[TMP10]] = select <4 x i1> [[TMP6]], <4 x i32> [[STEP_ADD]], <4 x i32> [[VEC_PHI1]]
; CHECK-VF4IC4-NEXT:    [[TMP11]] = select <4 x i1> [[TMP7]], <4 x i32> [[STEP_ADD_2]], <4 x i32> [[VEC_PHI2]]
; CHECK-VF4IC4-NEXT:    [[TMP12]] = select <4 x i1> [[TMP8]], <4 x i32> [[STEP_ADD_3]], <4 x i32> [[VEC_PHI3]]
; CHECK-VF4IC4-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
; CHECK-VF4IC4-NEXT:    [[VEC_IND_NEXT]] = add <4 x i32> [[STEP_ADD_3]], splat (i32 4)
; CHECK-VF4IC4-NEXT:    [[TMP13:%.*]] = icmp eq i64 [[INDEX_NEXT]], 2147483648
; CHECK-VF4IC4-NEXT:    br i1 [[TMP13]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]]
; CHECK-VF4IC4:       [[MIDDLE_BLOCK]]:
; CHECK-VF4IC4-NEXT:    [[RDX_MINMAX:%.*]] = call <4 x i32> @llvm.umax.v4i32(<4 x i32> [[TMP9]], <4 x i32> [[TMP10]])
; CHECK-VF4IC4-NEXT:    [[RDX_MINMAX7:%.*]] = call <4 x i32> @llvm.umax.v4i32(<4 x i32> [[RDX_MINMAX]], <4 x i32> [[TMP11]])
; CHECK-VF4IC4-NEXT:    [[RDX_MINMAX8:%.*]] = call <4 x i32> @llvm.umax.v4i32(<4 x i32> [[RDX_MINMAX7]], <4 x i32> [[TMP12]])
; CHECK-VF4IC4-NEXT:    [[TMP14:%.*]] = call i32 @llvm.vector.reduce.umax.v4i32(<4 x i32> [[RDX_MINMAX8]])
; CHECK-VF4IC4-NEXT:    [[RDX_SELECT_CMP:%.*]] = icmp ne i32 [[TMP14]], 0
; CHECK-VF4IC4-NEXT:    [[RDX_SELECT:%.*]] = select i1 [[RDX_SELECT_CMP]], i32 [[TMP14]], i32 331
; CHECK-VF4IC4-NEXT:    br label %[[EXIT:.*]]
; CHECK-VF4IC4:       [[SCALAR_PH]]:
; CHECK-VF4IC4-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ 2147483646, %[[ENTRY]] ]
; CHECK-VF4IC4-NEXT:    [[BC_MERGE_RDX:%.*]] = phi i32 [ 331, %[[ENTRY]] ]
; CHECK-VF4IC4-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF4IC4:       [[FOR_BODY]]:
; CHECK-VF4IC4-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[RDX:%.*]] = phi i32 [ [[BC_MERGE_RDX]], %[[SCALAR_PH]] ], [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
; CHECK-VF4IC4-NEXT:    [[TMP15:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-VF4IC4-NEXT:    [[CMP:%.*]] = icmp sgt i32 [[TMP15]], 3
; CHECK-VF4IC4-NEXT:    [[CONV:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF4IC4-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP]], i32 [[CONV]], i32 [[RDX]]
; CHECK-VF4IC4-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF4IC4-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], 4294967294
; CHECK-VF4IC4-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT]], label %[[FOR_BODY]], !llvm.loop [[LOOP9:![0-9]+]]
; CHECK-VF4IC4:       [[EXIT]]:
; CHECK-VF4IC4-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ], [ [[RDX_SELECT]], %[[MIDDLE_BLOCK]] ]
; CHECK-VF4IC4-NEXT:    ret i32 [[SPEC_SELECT_LCSSA]]
;
; CHECK-VF1IC4-LABEL: define i32 @select_icmp_truncated_unsigned_iv_range(
; CHECK-VF1IC4-SAME: ptr [[A:%.*]]) {
; CHECK-VF1IC4-NEXT:  [[ENTRY:.*]]:
; CHECK-VF1IC4-NEXT:    br i1 false, label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK-VF1IC4:       [[VECTOR_PH]]:
; CHECK-VF1IC4-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK-VF1IC4:       [[VECTOR_BODY]]:
; CHECK-VF1IC4-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[VEC_PHI:%.*]] = phi i32 [ 0, %[[VECTOR_PH]] ], [ [[TMP19:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[VEC_PHI1:%.*]] = phi i32 [ 0, %[[VECTOR_PH]] ], [ [[TMP20:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[VEC_PHI2:%.*]] = phi i32 [ 0, %[[VECTOR_PH]] ], [ [[TMP21:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[VEC_PHI3:%.*]] = phi i32 [ 0, %[[VECTOR_PH]] ], [ [[TMP22:%.*]], %[[VECTOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[OFFSET_IDX:%.*]] = add i64 2147483646, [[INDEX]]
; CHECK-VF1IC4-NEXT:    [[TMP0:%.*]] = add i64 [[OFFSET_IDX]], 1
; CHECK-VF1IC4-NEXT:    [[TMP1:%.*]] = add i64 [[OFFSET_IDX]], 2
; CHECK-VF1IC4-NEXT:    [[TMP2:%.*]] = add i64 [[OFFSET_IDX]], 3
; CHECK-VF1IC4-NEXT:    [[OFFSET_IDX4:%.*]] = add i64 2147483646, [[INDEX]]
; CHECK-VF1IC4-NEXT:    [[TMP3:%.*]] = trunc i64 [[OFFSET_IDX4]] to i32
; CHECK-VF1IC4-NEXT:    [[TMP4:%.*]] = add i32 [[TMP3]], 1
; CHECK-VF1IC4-NEXT:    [[TMP5:%.*]] = add i32 [[TMP3]], 2
; CHECK-VF1IC4-NEXT:    [[TMP6:%.*]] = add i32 [[TMP3]], 3
; CHECK-VF1IC4-NEXT:    [[TMP7:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[OFFSET_IDX]]
; CHECK-VF1IC4-NEXT:    [[TMP8:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP0]]
; CHECK-VF1IC4-NEXT:    [[TMP9:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP1]]
; CHECK-VF1IC4-NEXT:    [[TMP10:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP2]]
; CHECK-VF1IC4-NEXT:    [[TMP11:%.*]] = load i32, ptr [[TMP7]], align 4
; CHECK-VF1IC4-NEXT:    [[TMP12:%.*]] = load i32, ptr [[TMP8]], align 4
; CHECK-VF1IC4-NEXT:    [[TMP13:%.*]] = load i32, ptr [[TMP9]], align 4
; CHECK-VF1IC4-NEXT:    [[TMP14:%.*]] = load i32, ptr [[TMP10]], align 4
; CHECK-VF1IC4-NEXT:    [[TMP15:%.*]] = icmp sgt i32 [[TMP11]], 3
; CHECK-VF1IC4-NEXT:    [[TMP16:%.*]] = icmp sgt i32 [[TMP12]], 3
; CHECK-VF1IC4-NEXT:    [[TMP17:%.*]] = icmp sgt i32 [[TMP13]], 3
; CHECK-VF1IC4-NEXT:    [[TMP18:%.*]] = icmp sgt i32 [[TMP14]], 3
; CHECK-VF1IC4-NEXT:    [[TMP19]] = select i1 [[TMP15]], i32 [[TMP3]], i32 [[VEC_PHI]]
; CHECK-VF1IC4-NEXT:    [[TMP20]] = select i1 [[TMP16]], i32 [[TMP4]], i32 [[VEC_PHI1]]
; CHECK-VF1IC4-NEXT:    [[TMP21]] = select i1 [[TMP17]], i32 [[TMP5]], i32 [[VEC_PHI2]]
; CHECK-VF1IC4-NEXT:    [[TMP22]] = select i1 [[TMP18]], i32 [[TMP6]], i32 [[VEC_PHI3]]
; CHECK-VF1IC4-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-VF1IC4-NEXT:    [[TMP23:%.*]] = icmp eq i64 [[INDEX_NEXT]], 2147483648
; CHECK-VF1IC4-NEXT:    br i1 [[TMP23]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]]
; CHECK-VF1IC4:       [[MIDDLE_BLOCK]]:
; CHECK-VF1IC4-NEXT:    [[RDX_MINMAX:%.*]] = call i32 @llvm.umax.i32(i32 [[TMP19]], i32 [[TMP20]])
; CHECK-VF1IC4-NEXT:    [[RDX_MINMAX5:%.*]] = call i32 @llvm.umax.i32(i32 [[RDX_MINMAX]], i32 [[TMP21]])
; CHECK-VF1IC4-NEXT:    [[RDX_MINMAX6:%.*]] = call i32 @llvm.umax.i32(i32 [[RDX_MINMAX5]], i32 [[TMP22]])
; CHECK-VF1IC4-NEXT:    [[RDX_SELECT_CMP:%.*]] = icmp ne i32 [[RDX_MINMAX6]], 0
; CHECK-VF1IC4-NEXT:    [[RDX_SELECT:%.*]] = select i1 [[RDX_SELECT_CMP]], i32 [[RDX_MINMAX6]], i32 331
; CHECK-VF1IC4-NEXT:    br label %[[EXIT:.*]]
; CHECK-VF1IC4:       [[SCALAR_PH]]:
; CHECK-VF1IC4-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ 2147483646, %[[ENTRY]] ]
; CHECK-VF1IC4-NEXT:    [[BC_MERGE_RDX:%.*]] = phi i32 [ 331, %[[ENTRY]] ]
; CHECK-VF1IC4-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF1IC4:       [[FOR_BODY]]:
; CHECK-VF1IC4-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[RDX:%.*]] = phi i32 [ [[BC_MERGE_RDX]], %[[SCALAR_PH]] ], [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
; CHECK-VF1IC4-NEXT:    [[TMP24:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-VF1IC4-NEXT:    [[CMP:%.*]] = icmp sgt i32 [[TMP24]], 3
; CHECK-VF1IC4-NEXT:    [[CONV:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF1IC4-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP]], i32 [[CONV]], i32 [[RDX]]
; CHECK-VF1IC4-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF1IC4-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], 4294967294
; CHECK-VF1IC4-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT]], label %[[FOR_BODY]], !llvm.loop [[LOOP9:![0-9]+]]
; CHECK-VF1IC4:       [[EXIT]]:
; CHECK-VF1IC4-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ], [ [[RDX_SELECT]], %[[MIDDLE_BLOCK]] ]
; CHECK-VF1IC4-NEXT:    ret i32 [[SPEC_SELECT_LCSSA]]
;
entry:
  br label %for.body

for.body:                                         ; preds = %entry, %for.body
  %iv = phi i64 [ 2147483646, %entry ], [ %inc, %for.body ]
  %rdx = phi i32 [ 331, %entry ], [ %spec.select, %for.body ]
  %arrayidx = getelementptr inbounds i32, ptr %a, i64 %iv
  %0 = load i32, ptr %arrayidx, align 4
  %cmp = icmp sgt i32 %0, 3
  %conv = trunc i64 %iv to i32
  %spec.select = select i1 %cmp, i32 %conv, i32 %rdx
  %inc = add nuw nsw i64 %iv, 1
  %exitcond.not = icmp eq i64 %inc, 4294967294
  br i1 %exitcond.not, label %exit, label %for.body

exit:                                             ; preds = %for.body
  ret i32 %spec.select
}

; Negative tests

; This test can theoretically be vectorized, but only with a runtime-check.
; The construct that are introduced by IndVarSimplify is:
;   %1 = trunc i64 %iv to i32
; However, the loop guard is an i64:
;   %cmp.sgt = icmp sgt i64 %n, 0
; We cannot guarantee that %iv won't overflow an i32 value (and hence hit the
; sentinel value), and need a runtime-check to vectorize this case.
define i32 @not_vectorized_select_icmp_const_truncated_iv_unwidened_exit(ptr %a, i64 %n) {
; CHECK-VF4IC1-LABEL: define i32 @not_vectorized_select_icmp_const_truncated_iv_unwidened_exit(
; CHECK-VF4IC1-SAME: ptr [[A:%.*]], i64 [[N:%.*]]) {
; CHECK-VF4IC1-NEXT:  [[ENTRY:.*]]:
; CHECK-VF4IC1-NEXT:    [[CMP_SGT:%.*]] = icmp sgt i64 [[N]], 0
; CHECK-VF4IC1-NEXT:    br i1 [[CMP_SGT]], label %[[FOR_BODY_PREHEADER:.*]], label %[[EXIT:.*]]
; CHECK-VF4IC1:       [[FOR_BODY_PREHEADER]]:
; CHECK-VF4IC1-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF4IC1:       [[FOR_BODY]]:
; CHECK-VF4IC1-NEXT:    [[IV:%.*]] = phi i64 [ [[INC:%.*]], %[[FOR_BODY]] ], [ 0, %[[FOR_BODY_PREHEADER]] ]
; CHECK-VF4IC1-NEXT:    [[RDX:%.*]] = phi i32 [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ], [ 331, %[[FOR_BODY_PREHEADER]] ]
; CHECK-VF4IC1-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
; CHECK-VF4IC1-NEXT:    [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-VF4IC1-NEXT:    [[CMP:%.*]] = icmp sgt i32 [[TMP0]], 3
; CHECK-VF4IC1-NEXT:    [[TMP1:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF4IC1-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP]], i32 [[TMP1]], i32 [[RDX]]
; CHECK-VF4IC1-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF4IC1-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], [[N]]
; CHECK-VF4IC1-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT_LOOPEXIT:.*]], label %[[FOR_BODY]]
; CHECK-VF4IC1:       [[EXIT_LOOPEXIT]]:
; CHECK-VF4IC1-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    br label %[[EXIT]]
; CHECK-VF4IC1:       [[EXIT]]:
; CHECK-VF4IC1-NEXT:    [[RDX_LCSSA:%.*]] = phi i32 [ 331, %[[ENTRY]] ], [ [[SPEC_SELECT_LCSSA]], %[[EXIT_LOOPEXIT]] ]
; CHECK-VF4IC1-NEXT:    ret i32 [[RDX_LCSSA]]
;
; CHECK-VF4IC4-LABEL: define i32 @not_vectorized_select_icmp_const_truncated_iv_unwidened_exit(
; CHECK-VF4IC4-SAME: ptr [[A:%.*]], i64 [[N:%.*]]) {
; CHECK-VF4IC4-NEXT:  [[ENTRY:.*]]:
; CHECK-VF4IC4-NEXT:    [[CMP_SGT:%.*]] = icmp sgt i64 [[N]], 0
; CHECK-VF4IC4-NEXT:    br i1 [[CMP_SGT]], label %[[FOR_BODY_PREHEADER:.*]], label %[[EXIT:.*]]
; CHECK-VF4IC4:       [[FOR_BODY_PREHEADER]]:
; CHECK-VF4IC4-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF4IC4:       [[FOR_BODY]]:
; CHECK-VF4IC4-NEXT:    [[IV:%.*]] = phi i64 [ [[INC:%.*]], %[[FOR_BODY]] ], [ 0, %[[FOR_BODY_PREHEADER]] ]
; CHECK-VF4IC4-NEXT:    [[RDX:%.*]] = phi i32 [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ], [ 331, %[[FOR_BODY_PREHEADER]] ]
; CHECK-VF4IC4-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
; CHECK-VF4IC4-NEXT:    [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-VF4IC4-NEXT:    [[CMP:%.*]] = icmp sgt i32 [[TMP0]], 3
; CHECK-VF4IC4-NEXT:    [[TMP1:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF4IC4-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP]], i32 [[TMP1]], i32 [[RDX]]
; CHECK-VF4IC4-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF4IC4-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], [[N]]
; CHECK-VF4IC4-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT_LOOPEXIT:.*]], label %[[FOR_BODY]]
; CHECK-VF4IC4:       [[EXIT_LOOPEXIT]]:
; CHECK-VF4IC4-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    br label %[[EXIT]]
; CHECK-VF4IC4:       [[EXIT]]:
; CHECK-VF4IC4-NEXT:    [[RDX_LCSSA:%.*]] = phi i32 [ 331, %[[ENTRY]] ], [ [[SPEC_SELECT_LCSSA]], %[[EXIT_LOOPEXIT]] ]
; CHECK-VF4IC4-NEXT:    ret i32 [[RDX_LCSSA]]
;
; CHECK-VF1IC4-LABEL: define i32 @not_vectorized_select_icmp_const_truncated_iv_unwidened_exit(
; CHECK-VF1IC4-SAME: ptr [[A:%.*]], i64 [[N:%.*]]) {
; CHECK-VF1IC4-NEXT:  [[ENTRY:.*]]:
; CHECK-VF1IC4-NEXT:    [[CMP_SGT:%.*]] = icmp sgt i64 [[N]], 0
; CHECK-VF1IC4-NEXT:    br i1 [[CMP_SGT]], label %[[FOR_BODY_PREHEADER:.*]], label %[[EXIT:.*]]
; CHECK-VF1IC4:       [[FOR_BODY_PREHEADER]]:
; CHECK-VF1IC4-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF1IC4:       [[FOR_BODY]]:
; CHECK-VF1IC4-NEXT:    [[IV:%.*]] = phi i64 [ [[INC:%.*]], %[[FOR_BODY]] ], [ 0, %[[FOR_BODY_PREHEADER]] ]
; CHECK-VF1IC4-NEXT:    [[RDX:%.*]] = phi i32 [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ], [ 331, %[[FOR_BODY_PREHEADER]] ]
; CHECK-VF1IC4-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
; CHECK-VF1IC4-NEXT:    [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-VF1IC4-NEXT:    [[CMP:%.*]] = icmp sgt i32 [[TMP0]], 3
; CHECK-VF1IC4-NEXT:    [[TMP1:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF1IC4-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP]], i32 [[TMP1]], i32 [[RDX]]
; CHECK-VF1IC4-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF1IC4-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], [[N]]
; CHECK-VF1IC4-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT_LOOPEXIT:.*]], label %[[FOR_BODY]]
; CHECK-VF1IC4:       [[EXIT_LOOPEXIT]]:
; CHECK-VF1IC4-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    br label %[[EXIT]]
; CHECK-VF1IC4:       [[EXIT]]:
; CHECK-VF1IC4-NEXT:    [[RDX_LCSSA:%.*]] = phi i32 [ 331, %[[ENTRY]] ], [ [[SPEC_SELECT_LCSSA]], %[[EXIT_LOOPEXIT]] ]
; CHECK-VF1IC4-NEXT:    ret i32 [[RDX_LCSSA]]
;
entry:
  %cmp.sgt = icmp sgt i64 %n, 0
  br i1 %cmp.sgt, label %for.body, label %exit

for.body:                                         ; preds = %entry, %for.body
  %iv = phi i64 [ 0, %entry ], [ %inc, %for.body ]
  %rdx = phi i32 [ 331, %entry ], [ %spec.select, %for.body ]
  %arrayidx = getelementptr inbounds i32, ptr %a, i64 %iv
  %0 = load i32, ptr %arrayidx, align 4
  %cmp = icmp sgt i32 %0, 3
  %1 = trunc i64 %iv to i32
  %spec.select = select i1 %cmp, i32 %1, i32 %rdx
  %inc = add nuw nsw i64 %iv, 1
  %exitcond.not = icmp eq i64 %inc, %n
  br i1 %exitcond.not, label %exit, label %for.body

exit:                                             ; preds = %for.body, %entry
  %rdx.lcssa = phi i32 [ 331, %entry ], [ %spec.select, %for.body ]
  ret i32 %rdx.lcssa
}

; This test can theoretically be vectorized, but only with a runtime-check.
; The construct that are introduced by IndVarSimplify is:
;   %1 = trunc i64 %iv to i32
; However, the loop guard is unsigned:
;   %cmp.not = icmp eq i32 %n, 0
; We cannot guarantee that %iv won't overflow an i32 value (and hence hit the
; sentinel value), and need a runtime-check to vectorize this case.
define i32 @not_vectorized_select_icmp_const_truncated_iv_unsigned_loop_guard(ptr %a, i32 %n) {
; CHECK-VF4IC1-LABEL: define i32 @not_vectorized_select_icmp_const_truncated_iv_unsigned_loop_guard(
; CHECK-VF4IC1-SAME: ptr [[A:%.*]], i32 [[N:%.*]]) {
; CHECK-VF4IC1-NEXT:  [[ENTRY:.*]]:
; CHECK-VF4IC1-NEXT:    [[CMP_NOT:%.*]] = icmp eq i32 [[N]], 0
; CHECK-VF4IC1-NEXT:    br i1 [[CMP_NOT]], label %[[EXIT:.*]], label %[[FOR_BODY_PREHEADER:.*]]
; CHECK-VF4IC1:       [[FOR_BODY_PREHEADER]]:
; CHECK-VF4IC1-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[N]] to i64
; CHECK-VF4IC1-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF4IC1:       [[FOR_BODY]]:
; CHECK-VF4IC1-NEXT:    [[IV:%.*]] = phi i64 [ 0, %[[FOR_BODY_PREHEADER]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[RDX:%.*]] = phi i32 [ 331, %[[FOR_BODY_PREHEADER]] ], [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
; CHECK-VF4IC1-NEXT:    [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-VF4IC1-NEXT:    [[CMP1:%.*]] = icmp sgt i32 [[TMP0]], 3
; CHECK-VF4IC1-NEXT:    [[TMP1:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF4IC1-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP1]], i32 [[TMP1]], i32 [[RDX]]
; CHECK-VF4IC1-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF4IC1-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], [[WIDE_TRIP_COUNT]]
; CHECK-VF4IC1-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT_LOOPEXIT:.*]], label %[[FOR_BODY]]
; CHECK-VF4IC1:       [[EXIT_LOOPEXIT]]:
; CHECK-VF4IC1-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    br label %[[EXIT]]
; CHECK-VF4IC1:       [[EXIT]]:
; CHECK-VF4IC1-NEXT:    [[RDX_LCSSA:%.*]] = phi i32 [ 331, %[[ENTRY]] ], [ [[SPEC_SELECT_LCSSA]], %[[EXIT_LOOPEXIT]] ]
; CHECK-VF4IC1-NEXT:    ret i32 [[RDX_LCSSA]]
;
; CHECK-VF4IC4-LABEL: define i32 @not_vectorized_select_icmp_const_truncated_iv_unsigned_loop_guard(
; CHECK-VF4IC4-SAME: ptr [[A:%.*]], i32 [[N:%.*]]) {
; CHECK-VF4IC4-NEXT:  [[ENTRY:.*]]:
; CHECK-VF4IC4-NEXT:    [[CMP_NOT:%.*]] = icmp eq i32 [[N]], 0
; CHECK-VF4IC4-NEXT:    br i1 [[CMP_NOT]], label %[[EXIT:.*]], label %[[FOR_BODY_PREHEADER:.*]]
; CHECK-VF4IC4:       [[FOR_BODY_PREHEADER]]:
; CHECK-VF4IC4-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[N]] to i64
; CHECK-VF4IC4-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF4IC4:       [[FOR_BODY]]:
; CHECK-VF4IC4-NEXT:    [[IV:%.*]] = phi i64 [ 0, %[[FOR_BODY_PREHEADER]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[RDX:%.*]] = phi i32 [ 331, %[[FOR_BODY_PREHEADER]] ], [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
; CHECK-VF4IC4-NEXT:    [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-VF4IC4-NEXT:    [[CMP1:%.*]] = icmp sgt i32 [[TMP0]], 3
; CHECK-VF4IC4-NEXT:    [[TMP1:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF4IC4-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP1]], i32 [[TMP1]], i32 [[RDX]]
; CHECK-VF4IC4-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF4IC4-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], [[WIDE_TRIP_COUNT]]
; CHECK-VF4IC4-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT_LOOPEXIT:.*]], label %[[FOR_BODY]]
; CHECK-VF4IC4:       [[EXIT_LOOPEXIT]]:
; CHECK-VF4IC4-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    br label %[[EXIT]]
; CHECK-VF4IC4:       [[EXIT]]:
; CHECK-VF4IC4-NEXT:    [[RDX_LCSSA:%.*]] = phi i32 [ 331, %[[ENTRY]] ], [ [[SPEC_SELECT_LCSSA]], %[[EXIT_LOOPEXIT]] ]
; CHECK-VF4IC4-NEXT:    ret i32 [[RDX_LCSSA]]
;
; CHECK-VF1IC4-LABEL: define i32 @not_vectorized_select_icmp_const_truncated_iv_unsigned_loop_guard(
; CHECK-VF1IC4-SAME: ptr [[A:%.*]], i32 [[N:%.*]]) {
; CHECK-VF1IC4-NEXT:  [[ENTRY:.*]]:
; CHECK-VF1IC4-NEXT:    [[CMP_NOT:%.*]] = icmp eq i32 [[N]], 0
; CHECK-VF1IC4-NEXT:    br i1 [[CMP_NOT]], label %[[EXIT:.*]], label %[[FOR_BODY_PREHEADER:.*]]
; CHECK-VF1IC4:       [[FOR_BODY_PREHEADER]]:
; CHECK-VF1IC4-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[N]] to i64
; CHECK-VF1IC4-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF1IC4:       [[FOR_BODY]]:
; CHECK-VF1IC4-NEXT:    [[IV:%.*]] = phi i64 [ 0, %[[FOR_BODY_PREHEADER]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[RDX:%.*]] = phi i32 [ 331, %[[FOR_BODY_PREHEADER]] ], [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
; CHECK-VF1IC4-NEXT:    [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-VF1IC4-NEXT:    [[CMP1:%.*]] = icmp sgt i32 [[TMP0]], 3
; CHECK-VF1IC4-NEXT:    [[TMP1:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF1IC4-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP1]], i32 [[TMP1]], i32 [[RDX]]
; CHECK-VF1IC4-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF1IC4-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], [[WIDE_TRIP_COUNT]]
; CHECK-VF1IC4-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT_LOOPEXIT:.*]], label %[[FOR_BODY]]
; CHECK-VF1IC4:       [[EXIT_LOOPEXIT]]:
; CHECK-VF1IC4-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    br label %[[EXIT]]
; CHECK-VF1IC4:       [[EXIT]]:
; CHECK-VF1IC4-NEXT:    [[RDX_LCSSA:%.*]] = phi i32 [ 331, %[[ENTRY]] ], [ [[SPEC_SELECT_LCSSA]], %[[EXIT_LOOPEXIT]] ]
; CHECK-VF1IC4-NEXT:    ret i32 [[RDX_LCSSA]]
;
entry:
  %cmp.not = icmp eq i32 %n, 0
  br i1 %cmp.not, label %exit, label %for.body.preheader

for.body.preheader:                               ; preds = %entry
  %wide.trip.count = zext i32 %n to i64
  br label %for.body

for.body:                                         ; preds = %for.body.preheader, %for.body
  %iv = phi i64 [ 0, %for.body.preheader ], [ %inc, %for.body ]
  %rdx = phi i32 [ 331, %for.body.preheader ], [ %spec.select, %for.body ]
  %arrayidx = getelementptr inbounds i32, ptr %a, i64 %iv
  %0 = load i32, ptr %arrayidx, align 4
  %cmp1 = icmp sgt i32 %0, 3
  %1 = trunc i64 %iv to i32
  %spec.select = select i1 %cmp1, i32 %1, i32 %rdx
  %inc = add nuw nsw i64 %iv, 1
  %exitcond.not = icmp eq i64 %inc, %wide.trip.count
  br i1 %exitcond.not, label %exit, label %for.body

exit:                                             ; preds = %for.body, %entry
  %rdx.lcssa = phi i32 [ 331, %entry ], [ %spec.select, %for.body ]
  ret i32 %rdx.lcssa
}

; This test cannot be vectorized, even with a runtime check.
; The construct that are introduced by IndVarSimplify is:
;   %1 = trunc i64 %iv to i32
; However, the loop exit condition is a constant that overflows i32:
;   %exitcond.not = icmp eq i64 %inc, 9223372036854775806
; Hence, the i32 will most certainly wrap and hit the sentinel value, and we
; cannot vectorize this case.
define i32 @not_vectorized_select_icmp_truncated_iv_out_of_bound(ptr %a) {
; CHECK-VF4IC1-LABEL: define i32 @not_vectorized_select_icmp_truncated_iv_out_of_bound(
; CHECK-VF4IC1-SAME: ptr [[A:%.*]]) {
; CHECK-VF4IC1-NEXT:  [[ENTRY:.*]]:
; CHECK-VF4IC1-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF4IC1:       [[FOR_BODY]]:
; CHECK-VF4IC1-NEXT:    [[IV:%.*]] = phi i64 [ 4294967294, %[[ENTRY]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[RDX:%.*]] = phi i32 [ 331, %[[ENTRY]] ], [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
; CHECK-VF4IC1-NEXT:    [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-VF4IC1-NEXT:    [[CMP:%.*]] = icmp sgt i32 [[TMP0]], 3
; CHECK-VF4IC1-NEXT:    [[CONV:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF4IC1-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP]], i32 [[CONV]], i32 [[RDX]]
; CHECK-VF4IC1-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF4IC1-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], 9223372036854775806
; CHECK-VF4IC1-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT:.*]], label %[[FOR_BODY]]
; CHECK-VF4IC1:       [[EXIT]]:
; CHECK-VF4IC1-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    ret i32 [[SPEC_SELECT_LCSSA]]
;
; CHECK-VF4IC4-LABEL: define i32 @not_vectorized_select_icmp_truncated_iv_out_of_bound(
; CHECK-VF4IC4-SAME: ptr [[A:%.*]]) {
; CHECK-VF4IC4-NEXT:  [[ENTRY:.*]]:
; CHECK-VF4IC4-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF4IC4:       [[FOR_BODY]]:
; CHECK-VF4IC4-NEXT:    [[IV:%.*]] = phi i64 [ 4294967294, %[[ENTRY]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[RDX:%.*]] = phi i32 [ 331, %[[ENTRY]] ], [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
; CHECK-VF4IC4-NEXT:    [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-VF4IC4-NEXT:    [[CMP:%.*]] = icmp sgt i32 [[TMP0]], 3
; CHECK-VF4IC4-NEXT:    [[CONV:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF4IC4-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP]], i32 [[CONV]], i32 [[RDX]]
; CHECK-VF4IC4-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF4IC4-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], 9223372036854775806
; CHECK-VF4IC4-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT:.*]], label %[[FOR_BODY]]
; CHECK-VF4IC4:       [[EXIT]]:
; CHECK-VF4IC4-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    ret i32 [[SPEC_SELECT_LCSSA]]
;
; CHECK-VF1IC4-LABEL: define i32 @not_vectorized_select_icmp_truncated_iv_out_of_bound(
; CHECK-VF1IC4-SAME: ptr [[A:%.*]]) {
; CHECK-VF1IC4-NEXT:  [[ENTRY:.*]]:
; CHECK-VF1IC4-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF1IC4:       [[FOR_BODY]]:
; CHECK-VF1IC4-NEXT:    [[IV:%.*]] = phi i64 [ 4294967294, %[[ENTRY]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[RDX:%.*]] = phi i32 [ 331, %[[ENTRY]] ], [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
; CHECK-VF1IC4-NEXT:    [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-VF1IC4-NEXT:    [[CMP:%.*]] = icmp sgt i32 [[TMP0]], 3
; CHECK-VF1IC4-NEXT:    [[CONV:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF1IC4-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP]], i32 [[CONV]], i32 [[RDX]]
; CHECK-VF1IC4-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF1IC4-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], 9223372036854775806
; CHECK-VF1IC4-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT:.*]], label %[[FOR_BODY]]
; CHECK-VF1IC4:       [[EXIT]]:
; CHECK-VF1IC4-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    ret i32 [[SPEC_SELECT_LCSSA]]
;
entry:
  br label %for.body

for.body:                                         ; preds = %entry, %for.body
  %iv = phi i64 [ 4294967294, %entry ], [ %inc, %for.body ]
  %rdx = phi i32 [ 331, %entry ], [ %spec.select, %for.body ]
  %arrayidx = getelementptr inbounds i32, ptr %a, i64 %iv
  %0 = load i32, ptr %arrayidx, align 4
  %cmp = icmp sgt i32 %0, 3
  %conv = trunc i64 %iv to i32
  %spec.select = select i1 %cmp, i32 %conv, i32 %rdx
  %inc = add nuw nsw i64 %iv, 1
  %exitcond.not = icmp eq i64 %inc, 9223372036854775806
  br i1 %exitcond.not, label %exit, label %for.body

exit:                                             ; preds = %for.body
  ret i32 %spec.select
}

; Forbidding vectorization of the FindLastIV pattern involving a truncated
; induction variable in the absence of any loop guard.
define i32 @not_vectorized_select_iv_icmp_no_guard(ptr %a, ptr %b, i32 %start, i32 %n) {
; CHECK-VF4IC1-LABEL: define i32 @not_vectorized_select_iv_icmp_no_guard(
; CHECK-VF4IC1-SAME: ptr [[A:%.*]], ptr [[B:%.*]], i32 [[START:%.*]], i32 [[N:%.*]]) {
; CHECK-VF4IC1-NEXT:  [[ENTRY:.*]]:
; CHECK-VF4IC1-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[N]] to i64
; CHECK-VF4IC1-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF4IC1:       [[FOR_BODY]]:
; CHECK-VF4IC1-NEXT:    [[IV:%.*]] = phi i64 [ 0, %[[ENTRY]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[RDX:%.*]] = phi i32 [ [[START]], %[[ENTRY]] ], [ [[COND:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
; CHECK-VF4IC1-NEXT:    [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-VF4IC1-NEXT:    [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[IV]]
; CHECK-VF4IC1-NEXT:    [[TMP1:%.*]] = load i32, ptr [[ARRAYIDX2]], align 4
; CHECK-VF4IC1-NEXT:    [[CMP:%.*]] = icmp sgt i32 [[TMP0]], [[TMP1]]
; CHECK-VF4IC1-NEXT:    [[TMP2:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF4IC1-NEXT:    [[COND]] = select i1 [[CMP]], i32 [[TMP2]], i32 [[RDX]]
; CHECK-VF4IC1-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF4IC1-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], [[WIDE_TRIP_COUNT]]
; CHECK-VF4IC1-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT:.*]], label %[[FOR_BODY]]
; CHECK-VF4IC1:       [[EXIT]]:
; CHECK-VF4IC1-NEXT:    [[COND_LCSSA:%.*]] = phi i32 [ [[COND]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    ret i32 [[COND_LCSSA]]
;
; CHECK-VF4IC4-LABEL: define i32 @not_vectorized_select_iv_icmp_no_guard(
; CHECK-VF4IC4-SAME: ptr [[A:%.*]], ptr [[B:%.*]], i32 [[START:%.*]], i32 [[N:%.*]]) {
; CHECK-VF4IC4-NEXT:  [[ENTRY:.*]]:
; CHECK-VF4IC4-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[N]] to i64
; CHECK-VF4IC4-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF4IC4:       [[FOR_BODY]]:
; CHECK-VF4IC4-NEXT:    [[IV:%.*]] = phi i64 [ 0, %[[ENTRY]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[RDX:%.*]] = phi i32 [ [[START]], %[[ENTRY]] ], [ [[COND:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
; CHECK-VF4IC4-NEXT:    [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-VF4IC4-NEXT:    [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[IV]]
; CHECK-VF4IC4-NEXT:    [[TMP1:%.*]] = load i32, ptr [[ARRAYIDX2]], align 4
; CHECK-VF4IC4-NEXT:    [[CMP:%.*]] = icmp sgt i32 [[TMP0]], [[TMP1]]
; CHECK-VF4IC4-NEXT:    [[TMP2:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF4IC4-NEXT:    [[COND]] = select i1 [[CMP]], i32 [[TMP2]], i32 [[RDX]]
; CHECK-VF4IC4-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF4IC4-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], [[WIDE_TRIP_COUNT]]
; CHECK-VF4IC4-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT:.*]], label %[[FOR_BODY]]
; CHECK-VF4IC4:       [[EXIT]]:
; CHECK-VF4IC4-NEXT:    [[COND_LCSSA:%.*]] = phi i32 [ [[COND]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    ret i32 [[COND_LCSSA]]
;
; CHECK-VF1IC4-LABEL: define i32 @not_vectorized_select_iv_icmp_no_guard(
; CHECK-VF1IC4-SAME: ptr [[A:%.*]], ptr [[B:%.*]], i32 [[START:%.*]], i32 [[N:%.*]]) {
; CHECK-VF1IC4-NEXT:  [[ENTRY:.*]]:
; CHECK-VF1IC4-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[N]] to i64
; CHECK-VF1IC4-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF1IC4:       [[FOR_BODY]]:
; CHECK-VF1IC4-NEXT:    [[IV:%.*]] = phi i64 [ 0, %[[ENTRY]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[RDX:%.*]] = phi i32 [ [[START]], %[[ENTRY]] ], [ [[COND:%.*]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
; CHECK-VF1IC4-NEXT:    [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-VF1IC4-NEXT:    [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[IV]]
; CHECK-VF1IC4-NEXT:    [[TMP1:%.*]] = load i32, ptr [[ARRAYIDX2]], align 4
; CHECK-VF1IC4-NEXT:    [[CMP:%.*]] = icmp sgt i32 [[TMP0]], [[TMP1]]
; CHECK-VF1IC4-NEXT:    [[TMP2:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF1IC4-NEXT:    [[COND]] = select i1 [[CMP]], i32 [[TMP2]], i32 [[RDX]]
; CHECK-VF1IC4-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF1IC4-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], [[WIDE_TRIP_COUNT]]
; CHECK-VF1IC4-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT:.*]], label %[[FOR_BODY]]
; CHECK-VF1IC4:       [[EXIT]]:
; CHECK-VF1IC4-NEXT:    [[COND_LCSSA:%.*]] = phi i32 [ [[COND]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    ret i32 [[COND_LCSSA]]
;
entry:
  %wide.trip.count = zext i32 %n to i64
  br label %for.body

for.body:                                         ; preds = %entry, %for.body
  %iv = phi i64 [ 0, %entry ], [ %inc, %for.body ]
  %rdx = phi i32 [ %start, %entry ], [ %cond, %for.body ]
  %arrayidx = getelementptr inbounds i32, ptr %a, i64 %iv
  %0 = load i32, ptr %arrayidx, align 4
  %arrayidx2 = getelementptr inbounds i32, ptr %b, i64 %iv
  %1 = load i32, ptr %arrayidx2, align 4
  %cmp = icmp sgt i32 %0, %1
  %2 = trunc i64 %iv to i32
  %cond = select i1 %cmp, i32 %2, i32 %rdx
  %inc = add nuw nsw i64 %iv, 1
  %exitcond.not = icmp eq i64 %inc, %wide.trip.count
  br i1 %exitcond.not, label %exit, label %for.body

exit:                                             ; preds = %for.body
  ret i32 %cond
}

; Without loop guard, when the constant trip count exceeds the maximum signed
; value of the reduction type, truncation may cause overflow. Therefore,
; vectorizer is unable to guarantee that the induction variable is monotonic
; increasing.
define i32 @not_vectorized_select_fcmp_invalid_const_ub(ptr %a) {
; CHECK-VF4IC1-LABEL: define i32 @not_vectorized_select_fcmp_invalid_const_ub(
; CHECK-VF4IC1-SAME: ptr [[A:%.*]]) {
; CHECK-VF4IC1-NEXT:  [[ENTRY:.*]]:
; CHECK-VF4IC1-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF4IC1:       [[FOR_BODY]]:
; CHECK-VF4IC1-NEXT:    [[IV:%.*]] = phi i64 [ 0, %[[ENTRY]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[RDX:%.*]] = phi i32 [ -1, %[[ENTRY]] ], [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds float, ptr [[A]], i64 [[IV]]
; CHECK-VF4IC1-NEXT:    [[TMP0:%.*]] = load float, ptr [[ARRAYIDX]], align 4
; CHECK-VF4IC1-NEXT:    [[CMP:%.*]] = fcmp fast olt float [[TMP0]], 0.000000e+00
; CHECK-VF4IC1-NEXT:    [[TMP1:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF4IC1-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP]], i32 [[TMP1]], i32 [[RDX]]
; CHECK-VF4IC1-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF4IC1-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], 2147483649
; CHECK-VF4IC1-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT:.*]], label %[[FOR_BODY]]
; CHECK-VF4IC1:       [[EXIT]]:
; CHECK-VF4IC1-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    ret i32 [[SPEC_SELECT_LCSSA]]
;
; CHECK-VF4IC4-LABEL: define i32 @not_vectorized_select_fcmp_invalid_const_ub(
; CHECK-VF4IC4-SAME: ptr [[A:%.*]]) {
; CHECK-VF4IC4-NEXT:  [[ENTRY:.*]]:
; CHECK-VF4IC4-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF4IC4:       [[FOR_BODY]]:
; CHECK-VF4IC4-NEXT:    [[IV:%.*]] = phi i64 [ 0, %[[ENTRY]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[RDX:%.*]] = phi i32 [ -1, %[[ENTRY]] ], [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds float, ptr [[A]], i64 [[IV]]
; CHECK-VF4IC4-NEXT:    [[TMP0:%.*]] = load float, ptr [[ARRAYIDX]], align 4
; CHECK-VF4IC4-NEXT:    [[CMP:%.*]] = fcmp fast olt float [[TMP0]], 0.000000e+00
; CHECK-VF4IC4-NEXT:    [[TMP1:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF4IC4-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP]], i32 [[TMP1]], i32 [[RDX]]
; CHECK-VF4IC4-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF4IC4-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], 2147483649
; CHECK-VF4IC4-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT:.*]], label %[[FOR_BODY]]
; CHECK-VF4IC4:       [[EXIT]]:
; CHECK-VF4IC4-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    ret i32 [[SPEC_SELECT_LCSSA]]
;
; CHECK-VF1IC4-LABEL: define i32 @not_vectorized_select_fcmp_invalid_const_ub(
; CHECK-VF1IC4-SAME: ptr [[A:%.*]]) {
; CHECK-VF1IC4-NEXT:  [[ENTRY:.*]]:
; CHECK-VF1IC4-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF1IC4:       [[FOR_BODY]]:
; CHECK-VF1IC4-NEXT:    [[IV:%.*]] = phi i64 [ 0, %[[ENTRY]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[RDX:%.*]] = phi i32 [ -1, %[[ENTRY]] ], [ [[SPEC_SELECT:%.*]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds float, ptr [[A]], i64 [[IV]]
; CHECK-VF1IC4-NEXT:    [[TMP0:%.*]] = load float, ptr [[ARRAYIDX]], align 4
; CHECK-VF1IC4-NEXT:    [[CMP:%.*]] = fcmp fast olt float [[TMP0]], 0.000000e+00
; CHECK-VF1IC4-NEXT:    [[TMP1:%.*]] = trunc i64 [[IV]] to i32
; CHECK-VF1IC4-NEXT:    [[SPEC_SELECT]] = select i1 [[CMP]], i32 [[TMP1]], i32 [[RDX]]
; CHECK-VF1IC4-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF1IC4-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], 2147483649
; CHECK-VF1IC4-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT:.*]], label %[[FOR_BODY]]
; CHECK-VF1IC4:       [[EXIT]]:
; CHECK-VF1IC4-NEXT:    [[SPEC_SELECT_LCSSA:%.*]] = phi i32 [ [[SPEC_SELECT]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    ret i32 [[SPEC_SELECT_LCSSA]]
;
entry:
  br label %for.body

for.body:                                        ; preds = %entry, %for.body
  %iv = phi i64 [ 0, %entry ], [ %inc, %for.body ]
  %rdx = phi i32 [ -1, %entry ], [ %spec.select, %for.body ]
  %arrayidx = getelementptr inbounds float, ptr %a, i64 %iv
  %0 = load float, ptr %arrayidx, align 4
  %cmp = fcmp fast olt float %0, 0.000000e+00
  %1 = trunc i64 %iv to i32
  %spec.select = select i1 %cmp, i32 %1, i32 %rdx
  %inc = add nuw nsw i64 %iv, 1
  %exitcond.not = icmp eq i64 %inc, 2147483649
  br i1 %exitcond.not, label %exit, label %for.body

exit:                                            ; preds = %for.body
  ret i32 %spec.select
}

; Even with loop guard protection, if the destination type of the truncation
; instruction is smaller than the trip count type before extension, overflow
; could still occur.
define i16 @not_vectorized_select_iv_icmp_overflow_unwidened_tripcount(ptr %a, ptr %b, i16 %start, i32 %n) {
; CHECK-VF4IC1-LABEL: define i16 @not_vectorized_select_iv_icmp_overflow_unwidened_tripcount(
; CHECK-VF4IC1-SAME: ptr [[A:%.*]], ptr [[B:%.*]], i16 [[START:%.*]], i32 [[N:%.*]]) {
; CHECK-VF4IC1-NEXT:  [[ENTRY:.*]]:
; CHECK-VF4IC1-NEXT:    [[CMP9:%.*]] = icmp sgt i32 [[N]], 0
; CHECK-VF4IC1-NEXT:    br i1 [[CMP9]], label %[[FOR_BODY_PREHEADER:.*]], label %[[EXIT:.*]]
; CHECK-VF4IC1:       [[FOR_BODY_PREHEADER]]:
; CHECK-VF4IC1-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[N]] to i64
; CHECK-VF4IC1-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF4IC1:       [[FOR_BODY]]:
; CHECK-VF4IC1-NEXT:    [[IV:%.*]] = phi i64 [ 0, %[[FOR_BODY_PREHEADER]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[RDX:%.*]] = phi i16 [ [[START]], %[[FOR_BODY_PREHEADER]] ], [ [[COND:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
; CHECK-VF4IC1-NEXT:    [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-VF4IC1-NEXT:    [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[IV]]
; CHECK-VF4IC1-NEXT:    [[TMP1:%.*]] = load i32, ptr [[ARRAYIDX2]], align 4
; CHECK-VF4IC1-NEXT:    [[CMP3:%.*]] = icmp sgt i32 [[TMP0]], [[TMP1]]
; CHECK-VF4IC1-NEXT:    [[TMP2:%.*]] = trunc i64 [[IV]] to i16
; CHECK-VF4IC1-NEXT:    [[COND]] = select i1 [[CMP3]], i16 [[TMP2]], i16 [[RDX]]
; CHECK-VF4IC1-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF4IC1-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], [[WIDE_TRIP_COUNT]]
; CHECK-VF4IC1-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT_LOOPEXIT:.*]], label %[[FOR_BODY]]
; CHECK-VF4IC1:       [[EXIT_LOOPEXIT]]:
; CHECK-VF4IC1-NEXT:    [[COND_LCSSA:%.*]] = phi i16 [ [[COND]], %[[FOR_BODY]] ]
; CHECK-VF4IC1-NEXT:    br label %[[EXIT]]
; CHECK-VF4IC1:       [[EXIT]]:
; CHECK-VF4IC1-NEXT:    [[RDX_0_LCSSA:%.*]] = phi i16 [ [[START]], %[[ENTRY]] ], [ [[COND_LCSSA]], %[[EXIT_LOOPEXIT]] ]
; CHECK-VF4IC1-NEXT:    ret i16 [[RDX_0_LCSSA]]
;
; CHECK-VF4IC4-LABEL: define i16 @not_vectorized_select_iv_icmp_overflow_unwidened_tripcount(
; CHECK-VF4IC4-SAME: ptr [[A:%.*]], ptr [[B:%.*]], i16 [[START:%.*]], i32 [[N:%.*]]) {
; CHECK-VF4IC4-NEXT:  [[ENTRY:.*]]:
; CHECK-VF4IC4-NEXT:    [[CMP9:%.*]] = icmp sgt i32 [[N]], 0
; CHECK-VF4IC4-NEXT:    br i1 [[CMP9]], label %[[FOR_BODY_PREHEADER:.*]], label %[[EXIT:.*]]
; CHECK-VF4IC4:       [[FOR_BODY_PREHEADER]]:
; CHECK-VF4IC4-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[N]] to i64
; CHECK-VF4IC4-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF4IC4:       [[FOR_BODY]]:
; CHECK-VF4IC4-NEXT:    [[IV:%.*]] = phi i64 [ 0, %[[FOR_BODY_PREHEADER]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[RDX:%.*]] = phi i16 [ [[START]], %[[FOR_BODY_PREHEADER]] ], [ [[COND:%.*]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
; CHECK-VF4IC4-NEXT:    [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-VF4IC4-NEXT:    [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[IV]]
; CHECK-VF4IC4-NEXT:    [[TMP1:%.*]] = load i32, ptr [[ARRAYIDX2]], align 4
; CHECK-VF4IC4-NEXT:    [[CMP3:%.*]] = icmp sgt i32 [[TMP0]], [[TMP1]]
; CHECK-VF4IC4-NEXT:    [[TMP2:%.*]] = trunc i64 [[IV]] to i16
; CHECK-VF4IC4-NEXT:    [[COND]] = select i1 [[CMP3]], i16 [[TMP2]], i16 [[RDX]]
; CHECK-VF4IC4-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF4IC4-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], [[WIDE_TRIP_COUNT]]
; CHECK-VF4IC4-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT_LOOPEXIT:.*]], label %[[FOR_BODY]]
; CHECK-VF4IC4:       [[EXIT_LOOPEXIT]]:
; CHECK-VF4IC4-NEXT:    [[COND_LCSSA:%.*]] = phi i16 [ [[COND]], %[[FOR_BODY]] ]
; CHECK-VF4IC4-NEXT:    br label %[[EXIT]]
; CHECK-VF4IC4:       [[EXIT]]:
; CHECK-VF4IC4-NEXT:    [[RDX_0_LCSSA:%.*]] = phi i16 [ [[START]], %[[ENTRY]] ], [ [[COND_LCSSA]], %[[EXIT_LOOPEXIT]] ]
; CHECK-VF4IC4-NEXT:    ret i16 [[RDX_0_LCSSA]]
;
; CHECK-VF1IC4-LABEL: define i16 @not_vectorized_select_iv_icmp_overflow_unwidened_tripcount(
; CHECK-VF1IC4-SAME: ptr [[A:%.*]], ptr [[B:%.*]], i16 [[START:%.*]], i32 [[N:%.*]]) {
; CHECK-VF1IC4-NEXT:  [[ENTRY:.*]]:
; CHECK-VF1IC4-NEXT:    [[CMP9:%.*]] = icmp sgt i32 [[N]], 0
; CHECK-VF1IC4-NEXT:    br i1 [[CMP9]], label %[[FOR_BODY_PREHEADER:.*]], label %[[EXIT:.*]]
; CHECK-VF1IC4:       [[FOR_BODY_PREHEADER]]:
; CHECK-VF1IC4-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[N]] to i64
; CHECK-VF1IC4-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK-VF1IC4:       [[FOR_BODY]]:
; CHECK-VF1IC4-NEXT:    [[IV:%.*]] = phi i64 [ 0, %[[FOR_BODY_PREHEADER]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[RDX:%.*]] = phi i16 [ [[START]], %[[FOR_BODY_PREHEADER]] ], [ [[COND:%.*]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IV]]
; CHECK-VF1IC4-NEXT:    [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-VF1IC4-NEXT:    [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[IV]]
; CHECK-VF1IC4-NEXT:    [[TMP1:%.*]] = load i32, ptr [[ARRAYIDX2]], align 4
; CHECK-VF1IC4-NEXT:    [[CMP3:%.*]] = icmp sgt i32 [[TMP0]], [[TMP1]]
; CHECK-VF1IC4-NEXT:    [[TMP2:%.*]] = trunc i64 [[IV]] to i16
; CHECK-VF1IC4-NEXT:    [[COND]] = select i1 [[CMP3]], i16 [[TMP2]], i16 [[RDX]]
; CHECK-VF1IC4-NEXT:    [[INC]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF1IC4-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], [[WIDE_TRIP_COUNT]]
; CHECK-VF1IC4-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT_LOOPEXIT:.*]], label %[[FOR_BODY]]
; CHECK-VF1IC4:       [[EXIT_LOOPEXIT]]:
; CHECK-VF1IC4-NEXT:    [[COND_LCSSA:%.*]] = phi i16 [ [[COND]], %[[FOR_BODY]] ]
; CHECK-VF1IC4-NEXT:    br label %[[EXIT]]
; CHECK-VF1IC4:       [[EXIT]]:
; CHECK-VF1IC4-NEXT:    [[RDX_0_LCSSA:%.*]] = phi i16 [ [[START]], %[[ENTRY]] ], [ [[COND_LCSSA]], %[[EXIT_LOOPEXIT]] ]
; CHECK-VF1IC4-NEXT:    ret i16 [[RDX_0_LCSSA]]
;
entry:
  %cmp9 = icmp sgt i32 %n, 0
  br i1 %cmp9, label %for.body.preheader, label %exit

for.body.preheader:                               ; preds = %entry
  %wide.trip.count = zext i32 %n to i64
  br label %for.body

for.body:                                         ; preds = %for.body.preheader, %for.body
  %iv = phi i64 [ 0, %for.body.preheader ], [ %inc, %for.body ]
  %rdx = phi i16 [ %start, %for.body.preheader ], [ %cond, %for.body ]
  %arrayidx = getelementptr inbounds i32, ptr %a, i64 %iv
  %0 = load i32, ptr %arrayidx, align 4
  %arrayidx2 = getelementptr inbounds i32, ptr %b, i64 %iv
  %1 = load i32, ptr %arrayidx2, align 4
  %cmp3 = icmp sgt i32 %0, %1
  %2 = trunc i64 %iv to i16
  %cond = select i1 %cmp3, i16 %2, i16 %rdx
  %inc = add nuw nsw i64 %iv, 1
  %exitcond.not = icmp eq i64 %inc, %wide.trip.count
  br i1 %exitcond.not, label %exit, label %for.body

exit:                                             ; preds = %for.body, %entry
  %rdx.0.lcssa = phi i16 [ %start, %entry ], [ %cond, %for.body ]
  ret i16 %rdx.0.lcssa
}