1 ; RUN: opt < %s -basicaa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s 2 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" 3 target triple = "x86_64-unknown-linux-gnu" 4 5 ; CHECK-LABEL: test_with_zext 6 ; CHECK: NoAlias: i8* %a, i8* %b 7 8 define void @test_with_zext() { 9 %1 = tail call i8* @malloc(i64 120) 10 %a = getelementptr inbounds i8, i8* %1, i64 8 11 %2 = getelementptr inbounds i8, i8* %1, i64 16 12 %3 = zext i32 3 to i64 13 %b = getelementptr inbounds i8, i8* %2, i64 %3 14 ret void 15 } 16 17 ; CHECK-LABEL: test_with_lshr 18 ; CHECK: NoAlias: i8* %a, i8* %b 19 20 define void @test_with_lshr(i64 %i) { 21 %1 = tail call i8* @malloc(i64 120) 22 %a = getelementptr inbounds i8, i8* %1, i64 8 23 %2 = getelementptr inbounds i8, i8* %1, i64 16 24 %3 = lshr i64 %i, 2 25 %b = getelementptr inbounds i8, i8* %2, i64 %3 26 ret void 27 } 28 29 ; CHECK-LABEL: test_with_a_loop 30 ; CHECK: NoAlias: i8* %a, i8* %b 31 32 define void @test_with_a_loop(i8* %mem) { 33 br label %for.loop 34 35 for.loop: 36 %i = phi i32 [ 0, %0 ], [ %i.plus1, %for.loop ] 37 %a = getelementptr inbounds i8, i8* %mem, i64 8 38 %a.plus1 = getelementptr inbounds i8, i8* %mem, i64 16 39 %i.64 = zext i32 %i to i64 40 %b = getelementptr inbounds i8, i8* %a.plus1, i64 %i.64 41 %i.plus1 = add nuw nsw i32 %i, 1 42 %cmp = icmp eq i32 %i.plus1, 10 43 br i1 %cmp, label %for.loop.exit, label %for.loop 44 45 for.loop.exit: 46 ret void 47 } 48 49 ; CHECK-LABEL: test_with_varying_base_pointer_in_loop 50 ; CHECK: NoAlias: i8* %a, i8* %b 51 52 define void @test_with_varying_base_pointer_in_loop(i8* %mem.orig) { 53 br label %for.loop 54 55 for.loop: 56 %mem = phi i8* [ %mem.orig, %0 ], [ %mem.plus1, %for.loop ] 57 %i = phi i32 [ 0, %0 ], [ %i.plus1, %for.loop ] 58 %a = getelementptr inbounds i8, i8* %mem, i64 8 59 %a.plus1 = getelementptr inbounds i8, i8* %mem, i64 16 60 %i.64 = zext i32 %i to i64 61 %b = getelementptr inbounds i8, i8* %a.plus1, i64 %i.64 62 %i.plus1 = add nuw nsw i32 %i, 1 63 %mem.plus1 = getelementptr inbounds i8, i8* %mem, i64 8 64 %cmp = icmp eq i32 %i.plus1, 10 65 br i1 %cmp, label %for.loop.exit, label %for.loop 66 67 for.loop.exit: 68 ret void 69 } 70 71 ; CHECK-LABEL: test_sign_extension 72 ; CHECK: PartialAlias: i64* %b.i64, i8* %a 73 74 define void @test_sign_extension(i32 %p) { 75 %1 = tail call i8* @malloc(i64 120) 76 %p.64 = zext i32 %p to i64 77 %a = getelementptr inbounds i8, i8* %1, i64 %p.64 78 %p.minus1 = add i32 %p, -1 79 %p.minus1.64 = zext i32 %p.minus1 to i64 80 %b.i8 = getelementptr inbounds i8, i8* %1, i64 %p.minus1.64 81 %b.i64 = bitcast i8* %b.i8 to i64* 82 ret void 83 } 84 85 ; CHECK-LABEL: test_fe_tools 86 ; CHECK: PartialAlias: i32* %a, i32* %b 87 88 define void @test_fe_tools([8 x i32]* %values) { 89 br label %reorder 90 91 for.loop: 92 %i = phi i32 [ 0, %reorder ], [ %i.next, %for.loop ] 93 %idxprom = zext i32 %i to i64 94 %b = getelementptr inbounds [8 x i32], [8 x i32]* %values, i64 0, i64 %idxprom 95 %i.next = add nuw nsw i32 %i, 1 96 %1 = icmp eq i32 %i.next, 10 97 br i1 %1, label %for.loop.exit, label %for.loop 98 99 reorder: 100 %a = getelementptr inbounds [8 x i32], [8 x i32]* %values, i64 0, i64 1 101 br label %for.loop 102 103 for.loop.exit: 104 ret void 105 } 106 107 @b = global i32 0, align 4 108 @d = global i32 0, align 4 109 110 ; CHECK-LABEL: test_spec2006 111 ; CHECK: PartialAlias: i32** %x, i32** %y 112 113 define void @test_spec2006() { 114 %h = alloca [1 x [2 x i32*]], align 16 115 %d.val = load i32, i32* @d, align 4 116 %d.promoted = sext i32 %d.val to i64 117 %1 = icmp slt i32 %d.val, 2 118 br i1 %1, label %.lr.ph, label %3 119 120 .lr.ph: ; preds = %0 121 br label %2 122 123 ; <label>:2 ; preds = %.lr.ph, %2 124 %i = phi i32 [ %d.val, %.lr.ph ], [ %i.plus1, %2 ] 125 %i.promoted = sext i32 %i to i64 126 %x = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 %d.promoted, i64 %i.promoted 127 %i.plus1 = add nsw i32 %i, 1 128 %cmp = icmp slt i32 %i.plus1, 2 129 br i1 %cmp, label %2, label %3 130 131 ; <label>:3 ; preds = %._crit_edge, %0 132 %y = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 0, i64 1 133 ret void 134 } 135 136 ; CHECK-LABEL: test_modulo_analysis_easy_case 137 ; CHECK: NoAlias: i32** %x, i32** %y 138 139 define void @test_modulo_analysis_easy_case(i64 %i) { 140 %h = alloca [1 x [2 x i32*]], align 16 141 %x = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 %i, i64 0 142 %y = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 0, i64 1 143 ret void 144 } 145 146 ; CHECK-LABEL: test_modulo_analysis_in_loop 147 ; CHECK: NoAlias: i32** %x, i32** %y 148 149 define void @test_modulo_analysis_in_loop() { 150 %h = alloca [1 x [2 x i32*]], align 16 151 br label %for.loop 152 153 for.loop: 154 %i = phi i32 [ 0, %0 ], [ %i.plus1, %for.loop ] 155 %i.promoted = sext i32 %i to i64 156 %x = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 %i.promoted, i64 0 157 %y = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 0, i64 1 158 %i.plus1 = add nsw i32 %i, 1 159 %cmp = icmp slt i32 %i.plus1, 2 160 br i1 %cmp, label %for.loop, label %for.loop.exit 161 162 for.loop.exit: 163 ret void 164 } 165 166 ; CHECK-LABEL: test_modulo_analysis_with_global 167 ; CHECK: PartialAlias: i32** %x, i32** %y 168 169 define void @test_modulo_analysis_with_global() { 170 %h = alloca [1 x [2 x i32*]], align 16 171 %b = load i32, i32* @b, align 4 172 %b.promoted = sext i32 %b to i64 173 br label %for.loop 174 175 for.loop: 176 %i = phi i32 [ 0, %0 ], [ %i.plus1, %for.loop ] 177 %i.promoted = sext i32 %i to i64 178 %x = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 %i.promoted, i64 %b.promoted 179 %y = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 0, i64 1 180 %i.plus1 = add nsw i32 %i, 1 181 %cmp = icmp slt i32 %i.plus1, 2 182 br i1 %cmp, label %for.loop, label %for.loop.exit 183 184 for.loop.exit: 185 ret void 186 } 187 188 ; CHECK-LABEL: test_const_eval 189 ; CHECK: NoAlias: i8* %a, i8* %b 190 define void @test_const_eval(i8* %ptr, i64 %offset) { 191 %a = getelementptr inbounds i8, i8* %ptr, i64 %offset 192 %a.dup = getelementptr inbounds i8, i8* %ptr, i64 %offset 193 %three = zext i32 3 to i64 194 %b = getelementptr inbounds i8, i8* %a.dup, i64 %three 195 ret void 196 } 197 198 ; CHECK-LABEL: test_const_eval_scaled 199 ; CHECK: MustAlias: i8* %a, i8* %b 200 define void @test_const_eval_scaled(i8* %ptr) { 201 %three = zext i32 3 to i64 202 %six = mul i64 %three, 2 203 %a = getelementptr inbounds i8, i8* %ptr, i64 %six 204 %b = getelementptr inbounds i8, i8* %ptr, i64 6 205 ret void 206 } 207 208 ; Function Attrs: nounwind 209 declare noalias i8* @malloc(i64) 210
