1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2 ; RUN: opt < %s -instcombine -S | FileCheck %s 3 4 ; Canonicalize vector ge/le comparisons with constants to gt/lt. 5 6 ; Normal types are ConstantDataVectors. Test the constant values adjacent to the 7 ; min/max values that we're not allowed to transform. 8 9 define <2 x i1> @sge(<2 x i8> %x) { 10 ; CHECK-LABEL: @sge( 11 ; CHECK-NEXT: [[CMP:%.*]] = icmp sgt <2 x i8> %x, <i8 -128, i8 126> 12 ; CHECK-NEXT: ret <2 x i1> [[CMP]] 13 ; 14 %cmp = icmp sge <2 x i8> %x, <i8 -127, i8 -129> 15 ret <2 x i1> %cmp 16 } 17 18 define <2 x i1> @uge(<2 x i8> %x) { 19 ; CHECK-LABEL: @uge( 20 ; CHECK-NEXT: [[CMP:%.*]] = icmp ugt <2 x i8> %x, <i8 -2, i8 0> 21 ; CHECK-NEXT: ret <2 x i1> [[CMP]] 22 ; 23 %cmp = icmp uge <2 x i8> %x, <i8 -1, i8 1> 24 ret <2 x i1> %cmp 25 } 26 27 define <2 x i1> @sle(<2 x i8> %x) { 28 ; CHECK-LABEL: @sle( 29 ; CHECK-NEXT: [[CMP:%.*]] = icmp slt <2 x i8> %x, <i8 127, i8 -127> 30 ; CHECK-NEXT: ret <2 x i1> [[CMP]] 31 ; 32 %cmp = icmp sle <2 x i8> %x, <i8 126, i8 128> 33 ret <2 x i1> %cmp 34 } 35 36 define <2 x i1> @ule(<2 x i8> %x) { 37 ; CHECK-LABEL: @ule( 38 ; CHECK-NEXT: [[CMP:%.*]] = icmp ult <2 x i8> %x, <i8 -1, i8 1> 39 ; CHECK-NEXT: ret <2 x i1> [[CMP]] 40 ; 41 %cmp = icmp ule <2 x i8> %x, <i8 254, i8 0> 42 ret <2 x i1> %cmp 43 } 44 45 ; Zeros are special: they're ConstantAggregateZero. 46 47 define <2 x i1> @sge_zero(<2 x i8> %x) { 48 ; CHECK-LABEL: @sge_zero( 49 ; CHECK-NEXT: [[CMP:%.*]] = icmp sgt <2 x i8> %x, <i8 -1, i8 -1> 50 ; CHECK-NEXT: ret <2 x i1> [[CMP]] 51 ; 52 %cmp = icmp sge <2 x i8> %x, <i8 0, i8 0> 53 ret <2 x i1> %cmp 54 } 55 56 define <2 x i1> @uge_zero(<2 x i8> %x) { 57 ; CHECK-LABEL: @uge_zero( 58 ; CHECK-NEXT: ret <2 x i1> <i1 true, i1 true> 59 ; 60 %cmp = icmp uge <2 x i8> %x, <i8 0, i8 0> 61 ret <2 x i1> %cmp 62 } 63 64 define <2 x i1> @sle_zero(<2 x i8> %x) { 65 ; CHECK-LABEL: @sle_zero( 66 ; CHECK-NEXT: [[CMP:%.*]] = icmp slt <2 x i8> %x, <i8 1, i8 1> 67 ; CHECK-NEXT: ret <2 x i1> [[CMP]] 68 ; 69 %cmp = icmp sle <2 x i8> %x, <i8 0, i8 0> 70 ret <2 x i1> %cmp 71 } 72 73 define <2 x i1> @ule_zero(<2 x i8> %x) { 74 ; CHECK-LABEL: @ule_zero( 75 ; CHECK-NEXT: [[CMP:%.*]] = icmp ult <2 x i8> %x, <i8 1, i8 1> 76 ; CHECK-NEXT: ret <2 x i1> [[CMP]] 77 ; 78 %cmp = icmp ule <2 x i8> %x, <i8 0, i8 0> 79 ret <2 x i1> %cmp 80 } 81 82 ; Weird types are ConstantVectors, not ConstantDataVectors. For an i3 type: 83 ; Signed min = -4 84 ; Unsigned min = 0 85 ; Signed max = 3 86 ; Unsigned max = 7 87 88 define <3 x i1> @sge_weird(<3 x i3> %x) { 89 ; CHECK-LABEL: @sge_weird( 90 ; CHECK-NEXT: [[CMP:%.*]] = icmp sgt <3 x i3> %x, <i3 -4, i3 2, i3 -1> 91 ; CHECK-NEXT: ret <3 x i1> [[CMP]] 92 ; 93 %cmp = icmp sge <3 x i3> %x, <i3 -3, i3 -5, i3 0> 94 ret <3 x i1> %cmp 95 } 96 97 define <3 x i1> @uge_weird(<3 x i3> %x) { 98 ; CHECK-LABEL: @uge_weird( 99 ; CHECK-NEXT: [[CMP:%.*]] = icmp ugt <3 x i3> %x, <i3 -2, i3 0, i3 1> 100 ; CHECK-NEXT: ret <3 x i1> [[CMP]] 101 ; 102 %cmp = icmp uge <3 x i3> %x, <i3 -1, i3 1, i3 2> 103 ret <3 x i1> %cmp 104 } 105 106 define <3 x i1> @sle_weird(<3 x i3> %x) { 107 ; CHECK-LABEL: @sle_weird( 108 ; CHECK-NEXT: [[CMP:%.*]] = icmp slt <3 x i3> %x, <i3 3, i3 -3, i3 1> 109 ; CHECK-NEXT: ret <3 x i1> [[CMP]] 110 ; 111 %cmp = icmp sle <3 x i3> %x, <i3 2, i3 4, i3 0> 112 ret <3 x i1> %cmp 113 } 114 115 define <3 x i1> @ule_weird(<3 x i3> %x) { 116 ; CHECK-LABEL: @ule_weird( 117 ; CHECK-NEXT: [[CMP:%.*]] = icmp ult <3 x i3> %x, <i3 -1, i3 1, i3 2> 118 ; CHECK-NEXT: ret <3 x i1> [[CMP]] 119 ; 120 %cmp = icmp ule <3 x i3> %x, <i3 6, i3 0, i3 1> 121 ret <3 x i1> %cmp 122 } 123 124 ; We can't do the transform if any constants are already at the limits. 125 126 define <2 x i1> @sge_min(<2 x i3> %x) { 127 ; CHECK-LABEL: @sge_min( 128 ; CHECK-NEXT: [[CMP:%.*]] = icmp sge <2 x i3> %x, <i3 -4, i3 1> 129 ; CHECK-NEXT: ret <2 x i1> [[CMP]] 130 ; 131 %cmp = icmp sge <2 x i3> %x, <i3 -4, i3 1> 132 ret <2 x i1> %cmp 133 } 134 135 define <2 x i1> @uge_min(<2 x i3> %x) { 136 ; CHECK-LABEL: @uge_min( 137 ; CHECK-NEXT: [[CMP:%.*]] = icmp uge <2 x i3> %x, <i3 1, i3 0> 138 ; CHECK-NEXT: ret <2 x i1> [[CMP]] 139 ; 140 %cmp = icmp uge <2 x i3> %x, <i3 1, i3 0> 141 ret <2 x i1> %cmp 142 } 143 144 define <2 x i1> @sle_max(<2 x i3> %x) { 145 ; CHECK-LABEL: @sle_max( 146 ; CHECK-NEXT: [[CMP:%.*]] = icmp sle <2 x i3> %x, <i3 1, i3 3> 147 ; CHECK-NEXT: ret <2 x i1> [[CMP]] 148 ; 149 %cmp = icmp sle <2 x i3> %x, <i3 1, i3 3> 150 ret <2 x i1> %cmp 151 } 152 153 define <2 x i1> @ule_max(<2 x i3> %x) { 154 ; CHECK-LABEL: @ule_max( 155 ; CHECK-NEXT: [[CMP:%.*]] = icmp ule <2 x i3> %x, <i3 -1, i3 1> 156 ; CHECK-NEXT: ret <2 x i1> [[CMP]] 157 ; 158 %cmp = icmp ule <2 x i3> %x, <i3 7, i3 1> 159 ret <2 x i1> %cmp 160 } 161 162 ; If we can't determine if a constant element is min/max (eg, it's a ConstantExpr), do nothing. 163 164 define <2 x i1> @PR27756_1(<2 x i8> %a) { 165 ; CHECK-LABEL: @PR27756_1( 166 ; CHECK-NEXT: [[CMP:%.*]] = icmp sle <2 x i8> %a, <i8 bitcast (<2 x i4> <i4 1, i4 2> to i8), i8 0> 167 ; CHECK-NEXT: ret <2 x i1> [[CMP]] 168 ; 169 %cmp = icmp sle <2 x i8> %a, <i8 bitcast (<2 x i4> <i4 1, i4 2> to i8), i8 0> 170 ret <2 x i1> %cmp 171 } 172 173 ; Undef elements don't prevent the transform of the comparison. 174 175 define <2 x i1> @PR27756_2(<2 x i8> %a) { 176 ; CHECK-LABEL: @PR27756_2( 177 ; CHECK-NEXT: [[CMP:%.*]] = icmp slt <2 x i8> %a, <i8 undef, i8 1> 178 ; CHECK-NEXT: ret <2 x i1> [[CMP]] 179 ; 180 %cmp = icmp sle <2 x i8> %a, <i8 undef, i8 0> 181 ret <2 x i1> %cmp 182 } 183 184 @someglobal = global i32 0 185 186 define <2 x i1> @PR27786(<2 x i8> %a) { 187 ; CHECK-LABEL: @PR27786( 188 ; CHECK-NEXT: [[CMP:%.*]] = icmp sle <2 x i8> %a, bitcast (i16 ptrtoint (i32* @someglobal to i16) to <2 x i8>) 189 ; CHECK-NEXT: ret <2 x i1> [[CMP]] 190 ; 191 %cmp = icmp sle <2 x i8> %a, bitcast (i16 ptrtoint (i32* @someglobal to i16) to <2 x i8>) 192 ret <2 x i1> %cmp 193 } 194
