; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
; RUN: opt -passes=instcombine -S < %s | FileCheck %s

@flt_nan = constant float 0x7FF8000000000000, align 4
@flt_pos_min_subnormal = constant float 0x36A0000000000000, align 4
@flt_pos_min_normal = constant float 0x3810000000000000, align 4
@flt_pos_max = constant float 0x47EFFFFFE0000000, align 4
@flt_pos_infinity = constant float 0x7FF0000000000000, align 4
@flt_neg_min_subnormal = constant float 0xB6A0000000000000, align 4
@flt_neg_min_normal = constant float 0xB810000000000000, align 4
@flt_neg_max = constant float 0xC7EFFFFFE0000000, align 4
@flt_neg_infinity = constant float 0xFFF0000000000000, align 4
@dbl_nan = constant double 0x7FF8000000000000, align 8
@dbl_pos_min_subnormal = constant double 4.940660e-324, align 8
@dbl_pos_min_normal = constant double 0x10000000000000, align 8
@dbl_pos_max = constant double 0x7FEFFFFFFFFFFFFF, align 8
@dbl_pos_infinity = constant double 0x7FF0000000000000, align 8
@dbl_neg_min_subnormal = constant double -4.940660e-324, align 8
@dbl_neg_min_normal = constant double 0x8010000000000000, align 8
@dbl_neg_max = constant double 0xFFEFFFFFFFFFFFFF, align 8
@dbl_neg_infinity = constant double 0xFFF0000000000000, align 8

define double @nexttoward_up_direction() {
; CHECK-LABEL: define double @nexttoward_up_direction() {
; CHECK-NEXT:    ret double f0x3FF0000000000001
;
  %arg = fpext double 2.0 to fp128
  %next = call double @nexttoward(double 1.0, fp128 %arg)
  ret double %next
}

define float @nexttowardf_up_direction() {
; CHECK-LABEL: define float @nexttowardf_up_direction() {
; CHECK-NEXT:    ret float f0x3F800001
;
  %arg = fpext float 2.0 to fp128
  %next = call float @nexttowardf(float 1.0, fp128 %arg)
  ret float %next
}

define double @nexttoward_down_direction() {
; CHECK-LABEL: define double @nexttoward_down_direction() {
; CHECK-NEXT:    ret double f0x3FEFFFFFFFFFFFFF
;
  %arg = fpext double 0.0 to fp128
  %next = call double @nexttoward(double 1.0, fp128 %arg)
  ret double %next
}

define float @nexttowardf_down_direction() {
; CHECK-LABEL: define float @nexttowardf_down_direction() {
; CHECK-NEXT:    ret float f0x3F7FFFFF
;
  %arg = fpext float 0.0 to fp128
  %next = call float @nexttowardf(float 1.0, fp128 %arg)
  ret float %next
}

define double @nexttoward_equal_args() {
; CHECK-LABEL: define double @nexttoward_equal_args() {
; CHECK-NEXT:    ret double 1.000000e+00
;
  %arg = fpext double 1.0 to fp128
  %next = call double @nexttoward(double 1.0, fp128 %arg)
  ret double %next
}

define float @nexttowardf_equal_args() {
; CHECK-LABEL: define float @nexttowardf_equal_args() {
; CHECK-NEXT:    ret float 1.000000e+00
;
  %arg = fpext float 1.0 to fp128
  %next = call float @nexttowardf(float 1.0, fp128 %arg)
  ret float %next
}

define double @nexttoward_pos_zero_neg_zero() {
; CHECK-LABEL: define double @nexttoward_pos_zero_neg_zero() {
; CHECK-NEXT:    ret double -0.000000e+00
;
  %neg_zero_ext = fpext double -0.0 to fp128
  %next = call double @nexttoward(double 0.0, fp128 %neg_zero_ext)
  ret double %next
}

define float @nexttowardf_pos_zero_neg_zero() {
; CHECK-LABEL: define float @nexttowardf_pos_zero_neg_zero() {
; CHECK-NEXT:    ret float -0.000000e+00
;
  %neg_zero_ext = fpext float -0.0 to fp128
  %next = call float @nexttowardf(float 0.0, fp128 %neg_zero_ext)
  ret float %next
}

define double @nexttoward_neg_zero_pos_zero() {
; CHECK-LABEL: define double @nexttoward_neg_zero_pos_zero() {
; CHECK-NEXT:    ret double 0.000000e+00
;
  %pos_zero_ext = fpext double 0.0 to fp128
  %next = call double @nexttoward(double -0.0, fp128 %pos_zero_ext)
  ret double %next
}

define float @nexttowardf_neg_zero_pos_zero() {
; CHECK-LABEL: define float @nexttowardf_neg_zero_pos_zero() {
; CHECK-NEXT:    ret float 0.000000e+00
;
  %pos_zero_ext = fpext float 0.0 to fp128
  %next = call float @nexttowardf(float -0.0, fp128 %pos_zero_ext)
  ret float %next
}

define double @nexttoward_nan_with_payload() {
; CHECK-LABEL: define double @nexttoward_nan_with_payload() {
; CHECK-NEXT:    ret double +nan(0x1)
;
  %tmp1 = load i64, ptr @dbl_nan
  %tmp2 = or i64 %tmp1, 1
  %nan_with_payload = bitcast i64 %tmp2 to double
  %dummy_arg = fpext double 1.0 to fp128
  %next = call double @nexttoward(double %nan_with_payload, fp128 %dummy_arg)
  ret double %next
}

define float @nexttowardf_nan_with_payload() {
; CHECK-LABEL: define float @nexttowardf_nan_with_payload() {
; CHECK-NEXT:    ret float +nan(0x1)
;
  %tmp1 = load i32, ptr @flt_nan
  %tmp2 = or i32 %tmp1, 1
  %nan_with_payload = bitcast i32 %tmp2 to float
  %dummy_arg = fpext float 1.0 to fp128
  %next = call float @nexttowardf(float %nan_with_payload, fp128 %dummy_arg)
  ret float %next
}

define double @nexttoward_pos_overflow() {
; CHECK-LABEL: define double @nexttoward_pos_overflow() {
; CHECK-NEXT:    ret double +inf
;
  %pos_max = load double, ptr @dbl_pos_max
  %pos_inf = load double, ptr @dbl_pos_infinity
  %ext_pos_inf = fpext double %pos_inf to fp128
  %next = call double @nexttoward(double %pos_max, fp128 %ext_pos_inf)
  ret double %next
}

define float @nexttowardf_pos_overflow () {
; CHECK-LABEL: define float @nexttowardf_pos_overflow() {
; CHECK-NEXT:    ret float +inf
;
  %pos_max = load float, ptr @flt_pos_max
  %pos_inf = load float, ptr @flt_pos_infinity
  %ext_pos_inf = fpext float %pos_inf to fp128
  %next = call float @nexttowardf(float %pos_max, fp128 %ext_pos_inf)
  ret float %next
}

define double @nexttoward_neg_overflow() {
; CHECK-LABEL: define double @nexttoward_neg_overflow() {
; CHECK-NEXT:    ret double -inf
;
  %neg_max = load double, ptr @dbl_neg_max
  %neg_inf = load double, ptr @dbl_neg_infinity
  %ext_neg_inf = fpext double %neg_inf to fp128
  %next = call double @nexttoward(double %neg_max, fp128 %ext_neg_inf)
  ret double %next
}

define float @nexttowardf_neg_overflow() {
; CHECK-LABEL: define float @nexttowardf_neg_overflow() {
; CHECK-NEXT:    ret float -inf
;
  %neg_max = load float, ptr @flt_neg_max
  %neg_inf = load float, ptr @flt_neg_infinity
  %ext_neg_inf = fpext float %neg_inf to fp128
  %next = call float @nexttowardf(float %neg_max, fp128 %ext_neg_inf)
  ret float %next
}

define double @nexttoward_zero_from_above() {
; CHECK-LABEL: define double @nexttoward_zero_from_above() {
; CHECK-NEXT:    [[NEXT:%.*]] = call double @nexttoward(double 4.940660e-324, fp128 0.000000e+00)
; CHECK-NEXT:    ret double [[NEXT]]
;
  %subnormal = load double, ptr @dbl_pos_min_subnormal
  %zero = fpext double 0.0 to fp128
  %next = call double @nexttoward(double %subnormal, fp128 %zero)
  ret double %next
}

define float @nexttowardf_zero_from_above() {
; CHECK-LABEL: define float @nexttowardf_zero_from_above() {
; CHECK-NEXT:    [[NEXT:%.*]] = call float @nexttowardf(float 1.401300e-45, fp128 0.000000e+00)
; CHECK-NEXT:    ret float [[NEXT]]
;
  %min_subnormal = load float, ptr @flt_pos_min_subnormal
  %zero = fpext float 0.0 to fp128
  %next = call float @nexttowardf(float %min_subnormal, fp128 %zero)
  ret float %next
}

define double @nexttoward_zero_from_below() {
; CHECK-LABEL: define double @nexttoward_zero_from_below() {
; CHECK-NEXT:    [[NEXT:%.*]] = call double @nexttoward(double -4.940660e-324, fp128 0.000000e+00)
; CHECK-NEXT:    ret double [[NEXT]]
;
  %subnormal = load double, ptr @dbl_neg_min_subnormal
  %zero = fpext double 0.0 to fp128
  %next = call double @nexttoward(double %subnormal, fp128 %zero)
  ret double %next
}

define float @nexttowardf_zero_from_below() {
; CHECK-LABEL: define float @nexttowardf_zero_from_below() {
; CHECK-NEXT:    [[NEXT:%.*]] = call float @nexttowardf(float -1.401300e-45, fp128 0.000000e+00)
; CHECK-NEXT:    ret float [[NEXT]]
;
  %min_subnormal = load float, ptr @flt_neg_min_subnormal
  %zero = fpext float 0.0 to fp128
  %next = call float @nexttowardf(float %min_subnormal, fp128 %zero)
  ret float %next
}

define double @nexttoward_subnormal() {
; CHECK-LABEL: define double @nexttoward_subnormal() {
; CHECK-NEXT:    [[NEXT:%.*]] = call double @nexttoward(double 4.940660e-324, fp128 1.000000e+00)
; CHECK-NEXT:    ret double [[NEXT]]
;
  %subnormal = load double, ptr @dbl_pos_min_subnormal
  %target = fpext double 1.0 to fp128
  %next = call double @nexttoward(double %subnormal, fp128 %target)
  ret double %next
}

define float @nexttowardf_subnormal() {
; CHECK-LABEL: define float @nexttowardf_subnormal() {
; CHECK-NEXT:    [[NEXT:%.*]] = call float @nexttowardf(float 1.401300e-45, fp128 1.000000e+00)
; CHECK-NEXT:    ret float [[NEXT]]
;
  %subnormal = load float, ptr @flt_pos_min_subnormal
  %target = fpext float 1.0 to fp128
  %next = call float @nexttowardf(float %subnormal, fp128 %target)
  ret float %next
}

define double @nexttoward_poison() {
; CHECK-LABEL: define double @nexttoward_poison() {
; CHECK-NEXT:    [[NEXT:%.*]] = call double @nexttoward(double poison, fp128 1.000000e+00)
; CHECK-NEXT:    ret double [[NEXT]]
;
  %dummy_arg = fpext double 1.0 to fp128
  %next = call double @nexttoward(double poison, fp128 %dummy_arg)
  ret double %next
}

define float @nexttowardf_poison() {
; CHECK-LABEL: define float @nexttowardf_poison() {
; CHECK-NEXT:    [[NEXT:%.*]] = call float @nexttowardf(float poison, fp128 1.000000e+00)
; CHECK-NEXT:    ret float [[NEXT]]
;
  %dummy_arg = fpext double 1.0 to fp128
  %next = call float @nexttowardf(float poison, fp128 %dummy_arg)
  ret float %next
}

define double @nexttoward_subnormal_readnone() {
; CHECK-LABEL: define double @nexttoward_subnormal_readnone() {
; CHECK-NEXT:    [[NEXT:%.*]] = call double @nexttoward(double 4.940660e-324, fp128 1.000000e+00) #[[ATTR1:[0-9]+]]
; CHECK-NEXT:    ret double [[NEXT]]
;
  %subnormal = load double, ptr @dbl_pos_min_subnormal
  %target = fpext double 1.0 to fp128
  %next = call double @nexttoward(double %subnormal, fp128 %target) readnone
  ret double %next
}

define float @nexttowardf_subnormal_readnone() {
; CHECK-LABEL: define float @nexttowardf_subnormal_readnone() {
; CHECK-NEXT:    [[NEXT:%.*]] = call float @nexttowardf(float 1.401300e-45, fp128 1.000000e+00) #[[ATTR1]]
; CHECK-NEXT:    ret float [[NEXT]]
;
  %subnormal = load float, ptr @flt_pos_min_subnormal
  %target = fpext float 1.0 to fp128
  %next = call float @nexttowardf(float %subnormal, fp128 %target) readnone
  ret float %next
}

declare double @nexttoward(double, fp128) #0
declare float @nexttowardf(float, fp128) #0
attributes #0 = { willreturn memory(errnomem: write) }