forked from OSchip/llvm-project
194 lines
5.4 KiB
LLVM
194 lines
5.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instcombine -S | FileCheck %s
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; Canonicalize vector ge/le comparisons with constants to gt/lt.
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; Normal types are ConstantDataVectors. Test the constant values adjacent to the
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; min/max values that we're not allowed to transform.
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define <2 x i1> @sge(<2 x i8> %x) {
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; CHECK-LABEL: @sge(
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; CHECK-NEXT: [[CMP:%.*]] = icmp sgt <2 x i8> %x, <i8 -128, i8 126>
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; CHECK-NEXT: ret <2 x i1> [[CMP]]
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;
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%cmp = icmp sge <2 x i8> %x, <i8 -127, i8 -129>
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ret <2 x i1> %cmp
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}
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define <2 x i1> @uge(<2 x i8> %x) {
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; CHECK-LABEL: @uge(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ugt <2 x i8> %x, <i8 -2, i8 0>
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; CHECK-NEXT: ret <2 x i1> [[CMP]]
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;
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%cmp = icmp uge <2 x i8> %x, <i8 -1, i8 1>
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ret <2 x i1> %cmp
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}
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define <2 x i1> @sle(<2 x i8> %x) {
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; CHECK-LABEL: @sle(
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; CHECK-NEXT: [[CMP:%.*]] = icmp slt <2 x i8> %x, <i8 127, i8 -127>
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; CHECK-NEXT: ret <2 x i1> [[CMP]]
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;
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%cmp = icmp sle <2 x i8> %x, <i8 126, i8 128>
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ret <2 x i1> %cmp
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}
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define <2 x i1> @ule(<2 x i8> %x) {
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; CHECK-LABEL: @ule(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult <2 x i8> %x, <i8 -1, i8 1>
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; CHECK-NEXT: ret <2 x i1> [[CMP]]
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;
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%cmp = icmp ule <2 x i8> %x, <i8 254, i8 0>
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ret <2 x i1> %cmp
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}
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; Zeros are special: they're ConstantAggregateZero.
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define <2 x i1> @sge_zero(<2 x i8> %x) {
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; CHECK-LABEL: @sge_zero(
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; CHECK-NEXT: [[CMP:%.*]] = icmp sgt <2 x i8> %x, <i8 -1, i8 -1>
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; CHECK-NEXT: ret <2 x i1> [[CMP]]
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;
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%cmp = icmp sge <2 x i8> %x, <i8 0, i8 0>
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ret <2 x i1> %cmp
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}
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define <2 x i1> @uge_zero(<2 x i8> %x) {
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; CHECK-LABEL: @uge_zero(
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; CHECK-NEXT: ret <2 x i1> <i1 true, i1 true>
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;
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%cmp = icmp uge <2 x i8> %x, <i8 0, i8 0>
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ret <2 x i1> %cmp
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}
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define <2 x i1> @sle_zero(<2 x i8> %x) {
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; CHECK-LABEL: @sle_zero(
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; CHECK-NEXT: [[CMP:%.*]] = icmp slt <2 x i8> %x, <i8 1, i8 1>
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; CHECK-NEXT: ret <2 x i1> [[CMP]]
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;
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%cmp = icmp sle <2 x i8> %x, <i8 0, i8 0>
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ret <2 x i1> %cmp
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}
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define <2 x i1> @ule_zero(<2 x i8> %x) {
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; CHECK-LABEL: @ule_zero(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult <2 x i8> %x, <i8 1, i8 1>
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; CHECK-NEXT: ret <2 x i1> [[CMP]]
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;
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%cmp = icmp ule <2 x i8> %x, <i8 0, i8 0>
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ret <2 x i1> %cmp
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}
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; Weird types are ConstantVectors, not ConstantDataVectors. For an i3 type:
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; Signed min = -4
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; Unsigned min = 0
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; Signed max = 3
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; Unsigned max = 7
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define <3 x i1> @sge_weird(<3 x i3> %x) {
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; CHECK-LABEL: @sge_weird(
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; CHECK-NEXT: [[CMP:%.*]] = icmp sgt <3 x i3> %x, <i3 -4, i3 2, i3 -1>
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; CHECK-NEXT: ret <3 x i1> [[CMP]]
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;
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%cmp = icmp sge <3 x i3> %x, <i3 -3, i3 -5, i3 0>
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ret <3 x i1> %cmp
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}
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define <3 x i1> @uge_weird(<3 x i3> %x) {
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; CHECK-LABEL: @uge_weird(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ugt <3 x i3> %x, <i3 -2, i3 0, i3 1>
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; CHECK-NEXT: ret <3 x i1> [[CMP]]
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;
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%cmp = icmp uge <3 x i3> %x, <i3 -1, i3 1, i3 2>
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ret <3 x i1> %cmp
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}
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define <3 x i1> @sle_weird(<3 x i3> %x) {
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; CHECK-LABEL: @sle_weird(
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; CHECK-NEXT: [[CMP:%.*]] = icmp slt <3 x i3> %x, <i3 3, i3 -3, i3 1>
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; CHECK-NEXT: ret <3 x i1> [[CMP]]
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;
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%cmp = icmp sle <3 x i3> %x, <i3 2, i3 4, i3 0>
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ret <3 x i1> %cmp
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}
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define <3 x i1> @ule_weird(<3 x i3> %x) {
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; CHECK-LABEL: @ule_weird(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult <3 x i3> %x, <i3 -1, i3 1, i3 2>
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; CHECK-NEXT: ret <3 x i1> [[CMP]]
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;
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%cmp = icmp ule <3 x i3> %x, <i3 6, i3 0, i3 1>
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ret <3 x i1> %cmp
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}
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; We can't do the transform if any constants are already at the limits.
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define <2 x i1> @sge_min(<2 x i3> %x) {
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; CHECK-LABEL: @sge_min(
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; CHECK-NEXT: [[CMP:%.*]] = icmp sge <2 x i3> %x, <i3 -4, i3 1>
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; CHECK-NEXT: ret <2 x i1> [[CMP]]
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;
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%cmp = icmp sge <2 x i3> %x, <i3 -4, i3 1>
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ret <2 x i1> %cmp
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}
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define <2 x i1> @uge_min(<2 x i3> %x) {
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; CHECK-LABEL: @uge_min(
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; CHECK-NEXT: [[CMP:%.*]] = icmp uge <2 x i3> %x, <i3 1, i3 0>
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; CHECK-NEXT: ret <2 x i1> [[CMP]]
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;
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%cmp = icmp uge <2 x i3> %x, <i3 1, i3 0>
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ret <2 x i1> %cmp
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}
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define <2 x i1> @sle_max(<2 x i3> %x) {
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; CHECK-LABEL: @sle_max(
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; CHECK-NEXT: [[CMP:%.*]] = icmp sle <2 x i3> %x, <i3 1, i3 3>
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; CHECK-NEXT: ret <2 x i1> [[CMP]]
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;
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%cmp = icmp sle <2 x i3> %x, <i3 1, i3 3>
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ret <2 x i1> %cmp
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}
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define <2 x i1> @ule_max(<2 x i3> %x) {
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; CHECK-LABEL: @ule_max(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ule <2 x i3> %x, <i3 -1, i3 1>
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; CHECK-NEXT: ret <2 x i1> [[CMP]]
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;
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%cmp = icmp ule <2 x i3> %x, <i3 7, i3 1>
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ret <2 x i1> %cmp
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}
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; If we can't determine if a constant element is min/max (eg, it's a ConstantExpr), do nothing.
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define <2 x i1> @PR27756_1(<2 x i8> %a) {
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; CHECK-LABEL: @PR27756_1(
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; CHECK-NEXT: [[CMP:%.*]] = icmp sle <2 x i8> %a, <i8 bitcast (<2 x i4> <i4 1, i4 2> to i8), i8 0>
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; CHECK-NEXT: ret <2 x i1> [[CMP]]
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;
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%cmp = icmp sle <2 x i8> %a, <i8 bitcast (<2 x i4> <i4 1, i4 2> to i8), i8 0>
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ret <2 x i1> %cmp
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}
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; Undef elements don't prevent the transform of the comparison.
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define <2 x i1> @PR27756_2(<2 x i8> %a) {
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; CHECK-LABEL: @PR27756_2(
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; CHECK-NEXT: [[CMP:%.*]] = icmp slt <2 x i8> %a, <i8 undef, i8 1>
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; CHECK-NEXT: ret <2 x i1> [[CMP]]
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;
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%cmp = icmp sle <2 x i8> %a, <i8 undef, i8 0>
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ret <2 x i1> %cmp
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}
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@someglobal = global i32 0
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define <2 x i1> @PR27786(<2 x i8> %a) {
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; CHECK-LABEL: @PR27786(
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; CHECK-NEXT: [[CMP:%.*]] = icmp sle <2 x i8> %a, bitcast (i16 ptrtoint (i32* @someglobal to i16) to <2 x i8>)
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; CHECK-NEXT: ret <2 x i1> [[CMP]]
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;
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%cmp = icmp sle <2 x i8> %a, bitcast (i16 ptrtoint (i32* @someglobal to i16) to <2 x i8>)
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ret <2 x i1> %cmp
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}
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