llvm/test/Transforms/InstCombine/cast-unsigned-icmp-eqcmp-0.ll

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

; This is related to https://bugs.llvm.org/show_bug.cgi?id=36682

; FIXME: *all* of these are true tests.
; In *all* of these, uitofp and bitcast should be instcombine'd out.

; FIXME: icmp eq/ne does not ignore undef elements in vectors.

define i1 @i32_cast_cmp_eq_int_0_uitofp_float(i32 %i) {
; CHECK-LABEL: @i32_cast_cmp_eq_int_0_uitofp_float(
; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 [[I:%.*]], 0
; CHECK-NEXT:    ret i1 [[CMP]]
;
  %f = uitofp i32 %i to float
  %b = bitcast float %f to i32
  %cmp = icmp eq i32 %b, 0
  ret i1 %cmp
}

define <2 x i1> @i32_cast_cmp_eq_int_0_uitofp_float_vec(<2 x i32> %i) {
; CHECK-LABEL: @i32_cast_cmp_eq_int_0_uitofp_float_vec(
; CHECK-NEXT:    [[CMP:%.*]] = icmp eq <2 x i32> [[I:%.*]], zeroinitializer
; CHECK-NEXT:    ret <2 x i1> [[CMP]]
;
  %f = uitofp <2 x i32> %i to  <2 x float>
  %b = bitcast <2 x float> %f to <2 x i32>
  %cmp = icmp eq <2 x i32> %b, <i32 0, i32 0>
  ret <2 x i1> %cmp
}

define <3 x i1> @i32_cast_cmp_eq_int_0_uitofp_float_vec_undef(<3 x i32> %i) {
; CHECK-LABEL: @i32_cast_cmp_eq_int_0_uitofp_float_vec_undef(
; CHECK-NEXT:    [[F:%.*]] = uitofp <3 x i32> [[I:%.*]] to <3 x float>
; CHECK-NEXT:    [[B:%.*]] = bitcast <3 x float> [[F]] to <3 x i32>
; CHECK-NEXT:    [[CMP:%.*]] = icmp eq <3 x i32> [[B]], <i32 0, i32 undef, i32 0>
; CHECK-NEXT:    ret <3 x i1> [[CMP]]
;
  %f = uitofp <3 x i32> %i to <3 x float>
  %b = bitcast <3 x float> %f to <3 x i32>
  %cmp = icmp eq <3 x i32> %b, <i32 0, i32 undef, i32 0>
  ret <3 x i1> %cmp
}

define i1 @i32_cast_cmp_ne_int_0_uitofp_float(i32 %i) {
; CHECK-LABEL: @i32_cast_cmp_ne_int_0_uitofp_float(
; CHECK-NEXT:    [[CMP:%.*]] = icmp ne i32 [[I:%.*]], 0
; CHECK-NEXT:    ret i1 [[CMP]]
;
  %f = uitofp i32 %i to float
  %b = bitcast float %f to i32
  %cmp = icmp ne i32 %b, 0
  ret i1 %cmp
}

define <2 x i1> @i32_cast_cmp_ne_int_0_uitofp_float_vec(<2 x i32> %i) {
; CHECK-LABEL: @i32_cast_cmp_ne_int_0_uitofp_float_vec(
; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <2 x i32> [[I:%.*]], zeroinitializer
; CHECK-NEXT:    ret <2 x i1> [[CMP]]
;
  %f = uitofp <2 x i32> %i to  <2 x float>
  %b = bitcast <2 x float> %f to <2 x i32>
  %cmp = icmp ne <2 x i32> %b, <i32 0, i32 0>
  ret <2 x i1> %cmp
}

define <3 x i1> @i32_cast_cmp_ne_int_0_uitofp_float_vec_undef(<3 x i32> %i) {
; CHECK-LABEL: @i32_cast_cmp_ne_int_0_uitofp_float_vec_undef(
; CHECK-NEXT:    [[F:%.*]] = uitofp <3 x i32> [[I:%.*]] to <3 x float>
; CHECK-NEXT:    [[B:%.*]] = bitcast <3 x float> [[F]] to <3 x i32>
; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <3 x i32> [[B]], <i32 0, i32 undef, i32 0>
; CHECK-NEXT:    ret <3 x i1> [[CMP]]
;
  %f = uitofp <3 x i32> %i to <3 x float>
  %b = bitcast <3 x float> %f to <3 x i32>
  %cmp = icmp ne <3 x i32> %b, <i32 0, i32 undef, i32 0>
  ret <3 x i1> %cmp
}

define i1 @i32_cast_cmp_eq_int_0_uitofp_double(i32 %i) {
; CHECK-LABEL: @i32_cast_cmp_eq_int_0_uitofp_double(
; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 [[I:%.*]], 0
; CHECK-NEXT:    ret i1 [[CMP]]
;
  %f = uitofp i32 %i to double
  %b = bitcast double %f to i64
  %cmp = icmp eq i64 %b, 0
  ret i1 %cmp
}

define <2 x i1> @i32_cast_cmp_eq_int_0_uitofp_double_vec(<2 x i32> %i) {
; CHECK-LABEL: @i32_cast_cmp_eq_int_0_uitofp_double_vec(
; CHECK-NEXT:    [[CMP:%.*]] = icmp eq <2 x i32> [[I:%.*]], zeroinitializer
; CHECK-NEXT:    ret <2 x i1> [[CMP]]
;
  %f = uitofp <2 x i32> %i to  <2 x double>
  %b = bitcast <2 x double> %f to <2 x i64>
  %cmp = icmp eq <2 x i64> %b, <i64 0, i64 0>
  ret <2 x i1> %cmp
}

define <3 x i1> @i32_cast_cmp_eq_int_0_uitofp_double_vec_undef(<3 x i32> %i) {
; CHECK-LABEL: @i32_cast_cmp_eq_int_0_uitofp_double_vec_undef(
; CHECK-NEXT:    [[F:%.*]] = uitofp <3 x i32> [[I:%.*]] to <3 x double>
; CHECK-NEXT:    [[B:%.*]] = bitcast <3 x double> [[F]] to <3 x i64>
; CHECK-NEXT:    [[CMP:%.*]] = icmp eq <3 x i64> [[B]], <i64 0, i64 undef, i64 0>
; CHECK-NEXT:    ret <3 x i1> [[CMP]]
;
  %f = uitofp <3 x i32> %i to <3 x double>
  %b = bitcast <3 x double> %f to <3 x i64>
  %cmp = icmp eq <3 x i64> %b, <i64 0, i64 undef, i64 0>
  ret <3 x i1> %cmp
}

define i1 @i32_cast_cmp_ne_int_0_uitofp_double(i32 %i) {
; CHECK-LABEL: @i32_cast_cmp_ne_int_0_uitofp_double(
; CHECK-NEXT:    [[CMP:%.*]] = icmp ne i32 [[I:%.*]], 0
; CHECK-NEXT:    ret i1 [[CMP]]
;
  %f = uitofp i32 %i to double
  %b = bitcast double %f to i64
  %cmp = icmp ne i64 %b, 0
  ret i1 %cmp
}

define <2 x i1> @i32_cast_cmp_ne_int_0_uitofp_double_vec(<2 x i32> %i) {
; CHECK-LABEL: @i32_cast_cmp_ne_int_0_uitofp_double_vec(
; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <2 x i32> [[I:%.*]], zeroinitializer
; CHECK-NEXT:    ret <2 x i1> [[CMP]]
;
  %f = uitofp <2 x i32> %i to  <2 x double>
  %b = bitcast <2 x double> %f to <2 x i64>
  %cmp = icmp ne <2 x i64> %b, <i64 0, i64 0>
  ret <2 x i1> %cmp
}

define <3 x i1> @i32_cast_cmp_ne_int_0_uitofp_double_vec_undef(<3 x i32> %i) {
; CHECK-LABEL: @i32_cast_cmp_ne_int_0_uitofp_double_vec_undef(
; CHECK-NEXT:    [[F:%.*]] = uitofp <3 x i32> [[I:%.*]] to <3 x double>
; CHECK-NEXT:    [[B:%.*]] = bitcast <3 x double> [[F]] to <3 x i64>
; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <3 x i64> [[B]], <i64 0, i64 undef, i64 0>
; CHECK-NEXT:    ret <3 x i1> [[CMP]]
;
  %f = uitofp <3 x i32> %i to <3 x double>
  %b = bitcast <3 x double> %f to <3 x i64>
  %cmp = icmp ne <3 x i64> %b, <i64 0, i64 undef, i64 0>
  ret <3 x i1> %cmp
}

define i1 @i32_cast_cmp_eq_int_0_uitofp_half(i32 %i) {
; CHECK-LABEL: @i32_cast_cmp_eq_int_0_uitofp_half(
; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 [[I:%.*]], 0
; CHECK-NEXT:    ret i1 [[CMP]]
;
  %f = uitofp i32 %i to half
  %b = bitcast half %f to i16
  %cmp = icmp eq i16 %b, 0
  ret i1 %cmp
}

define <2 x i1> @i32_cast_cmp_eq_int_0_uitofp_half_vec(<2 x i32> %i) {
; CHECK-LABEL: @i32_cast_cmp_eq_int_0_uitofp_half_vec(
; CHECK-NEXT:    [[CMP:%.*]] = icmp eq <2 x i32> [[I:%.*]], zeroinitializer
; CHECK-NEXT:    ret <2 x i1> [[CMP]]
;
  %f = uitofp <2 x i32> %i to  <2 x half>
  %b = bitcast <2 x half> %f to <2 x i16>
  %cmp = icmp eq <2 x i16> %b, <i16 0, i16 0>
  ret <2 x i1> %cmp
}

define <3 x i1> @i32_cast_cmp_eq_int_0_uitofp_half_vec_undef(<3 x i32> %i) {
; CHECK-LABEL: @i32_cast_cmp_eq_int_0_uitofp_half_vec_undef(
; CHECK-NEXT:    [[F:%.*]] = uitofp <3 x i32> [[I:%.*]] to <3 x half>
; CHECK-NEXT:    [[B:%.*]] = bitcast <3 x half> [[F]] to <3 x i16>
; CHECK-NEXT:    [[CMP:%.*]] = icmp eq <3 x i16> [[B]], <i16 0, i16 undef, i16 0>
; CHECK-NEXT:    ret <3 x i1> [[CMP]]
;
  %f = uitofp <3 x i32> %i to <3 x half>
  %b = bitcast <3 x half> %f to <3 x i16>
  %cmp = icmp eq <3 x i16> %b, <i16 0, i16 undef, i16 0>
  ret <3 x i1> %cmp
}

define i1 @i32_cast_cmp_ne_int_0_uitofp_half(i32 %i) {
; CHECK-LABEL: @i32_cast_cmp_ne_int_0_uitofp_half(
; CHECK-NEXT:    [[CMP:%.*]] = icmp ne i32 [[I:%.*]], 0
; CHECK-NEXT:    ret i1 [[CMP]]
;
  %f = uitofp i32 %i to half
  %b = bitcast half %f to i16
  %cmp = icmp ne i16 %b, 0
  ret i1 %cmp
}

define <2 x i1> @i32_cast_cmp_ne_int_0_uitofp_half_vec(<2 x i32> %i) {
; CHECK-LABEL: @i32_cast_cmp_ne_int_0_uitofp_half_vec(
; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <2 x i32> [[I:%.*]], zeroinitializer
; CHECK-NEXT:    ret <2 x i1> [[CMP]]
;
  %f = uitofp <2 x i32> %i to  <2 x half>
  %b = bitcast <2 x half> %f to <2 x i16>
  %cmp = icmp ne <2 x i16> %b, <i16 0, i16 0>
  ret <2 x i1> %cmp
}

define <3 x i1> @i32_cast_cmp_ne_int_0_uitofp_half_vec_undef(<3 x i32> %i) {
; CHECK-LABEL: @i32_cast_cmp_ne_int_0_uitofp_half_vec_undef(
; CHECK-NEXT:    [[F:%.*]] = uitofp <3 x i32> [[I:%.*]] to <3 x half>
; CHECK-NEXT:    [[B:%.*]] = bitcast <3 x half> [[F]] to <3 x i16>
; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <3 x i16> [[B]], <i16 0, i16 undef, i16 0>
; CHECK-NEXT:    ret <3 x i1> [[CMP]]
;
  %f = uitofp <3 x i32> %i to <3 x half>
  %b = bitcast <3 x half> %f to <3 x i16>
  %cmp = icmp ne <3 x i16> %b, <i16 0, i16 undef, i16 0>
  ret <3 x i1> %cmp
}