1; RUN: opt < %s -aa-pipeline=basic-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s 2target 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" 3target triple = "x86_64-unknown-linux-gnu" 4 5; CHECK-LABEL: test_with_zext 6; CHECK: NoAlias: i8* %a, i8* %b 7 8define 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 load i8, i8* %a 15 load i8, i8* %b 16 ret void 17} 18 19; CHECK-LABEL: test_with_lshr 20; CHECK: NoAlias: i8* %a, i8* %b 21 22define void @test_with_lshr(i64 %i) { 23 %1 = tail call i8* @malloc(i64 120) 24 %a = getelementptr inbounds i8, i8* %1, i64 8 25 %2 = getelementptr inbounds i8, i8* %1, i64 16 26 %3 = lshr i64 %i, 2 27 %b = getelementptr inbounds i8, i8* %2, i64 %3 28 load i8, i8* %a 29 load i8, i8* %b 30 ret void 31} 32 33; CHECK-LABEL: test_with_lshr_different_sizes 34; CHECK: NoAlias: i8* %m1, i16* %m2.idx 35 36define void @test_with_lshr_different_sizes(i64 %i) { 37 %m0 = tail call i8* @malloc(i64 120) 38 %m1 = getelementptr inbounds i8, i8* %m0, i64 1 39 load i8, i8* %m1 40 %m2 = getelementptr inbounds i8, i8* %m0, i64 2 41 %idx = lshr i64 %i, 2 42 %m2.i16 = bitcast i8* %m2 to i16* 43 %m2.idx = getelementptr inbounds i16, i16* %m2.i16, i64 %idx 44 load i16, i16* %m2.idx 45 ret void 46} 47 48; CHECK-LABEL: test_with_a_loop 49; CHECK: NoAlias: i8* %a, i8* %b 50 51define void @test_with_a_loop(i8* %mem) { 52 br label %for.loop 53 54for.loop: 55 %i = phi i32 [ 0, %0 ], [ %i.plus1, %for.loop ] 56 %a = getelementptr inbounds i8, i8* %mem, i64 8 57 load i8, i8* %a 58 %a.plus1 = getelementptr inbounds i8, i8* %mem, i64 16 59 %i.64 = zext i32 %i to i64 60 %b = getelementptr inbounds i8, i8* %a.plus1, i64 %i.64 61 load i8, i8* %b 62 %i.plus1 = add nuw nsw i32 %i, 1 63 %cmp = icmp eq i32 %i.plus1, 10 64 br i1 %cmp, label %for.loop.exit, label %for.loop 65 66for.loop.exit: 67 ret void 68} 69 70; CHECK-LABEL: test_with_varying_base_pointer_in_loop 71; CHECK: NoAlias: i8* %a, i8* %b 72 73define void @test_with_varying_base_pointer_in_loop(i8* %mem.orig) { 74 br label %for.loop 75 76for.loop: 77 %mem = phi i8* [ %mem.orig, %0 ], [ %mem.plus1, %for.loop ] 78 %i = phi i32 [ 0, %0 ], [ %i.plus1, %for.loop ] 79 %a = getelementptr inbounds i8, i8* %mem, i64 8 80 load i8, i8* %a 81 %a.plus1 = getelementptr inbounds i8, i8* %mem, i64 16 82 %i.64 = zext i32 %i to i64 83 %b = getelementptr inbounds i8, i8* %a.plus1, i64 %i.64 84 load i8, i8* %b 85 %i.plus1 = add nuw nsw i32 %i, 1 86 %mem.plus1 = getelementptr inbounds i8, i8* %mem, i64 8 87 %cmp = icmp eq i32 %i.plus1, 10 88 br i1 %cmp, label %for.loop.exit, label %for.loop 89 90for.loop.exit: 91 ret void 92} 93 94; CHECK-LABEL: test_sign_extension 95; CHECK: MayAlias: i8* %a, i64* %b.i64 96 97define void @test_sign_extension(i32 %p) { 98 %1 = tail call i8* @malloc(i64 120) 99 %p.64 = zext i32 %p to i64 100 %a = getelementptr inbounds i8, i8* %1, i64 %p.64 101 load i8, i8* %a 102 %p.minus1 = add i32 %p, -1 103 %p.minus1.64 = zext i32 %p.minus1 to i64 104 %b.i8 = getelementptr inbounds i8, i8* %1, i64 %p.minus1.64 105 %b.i64 = bitcast i8* %b.i8 to i64* 106 load i64, i64* %b.i64 107 ret void 108} 109 110; CHECK-LABEL: test_fe_tools 111; CHECK: MayAlias: i32* %a, i32* %b 112 113define void @test_fe_tools([8 x i32]* %values) { 114 br label %reorder 115 116for.loop: 117 %i = phi i32 [ 0, %reorder ], [ %i.next, %for.loop ] 118 %idxprom = zext i32 %i to i64 119 %b = getelementptr inbounds [8 x i32], [8 x i32]* %values, i64 0, i64 %idxprom 120 load i32, i32* %b 121 %i.next = add nuw nsw i32 %i, 1 122 %cmp = icmp eq i32 %i.next, 10 123 br i1 %cmp, label %for.loop.exit, label %for.loop 124 125reorder: 126 %a = getelementptr inbounds [8 x i32], [8 x i32]* %values, i64 0, i64 1 127 load i32, i32* %a 128 br label %for.loop 129 130for.loop.exit: 131 ret void 132} 133 134@b = global i32 0, align 4 135@d = global i32 0, align 4 136 137; CHECK-LABEL: test_spec2006 138; CHECK: MayAlias: i32** %x, i32** %y 139 140define void @test_spec2006() { 141 %h = alloca [1 x [2 x i32*]], align 16 142 %d.val = load i32, i32* @d, align 4 143 %d.promoted = sext i32 %d.val to i64 144 %1 = icmp slt i32 %d.val, 2 145 br i1 %1, label %.lr.ph, label %bb3 146 147.lr.ph: ; preds = %0 148 br label %bb2 149 150bb2: 151 %i = phi i32 [ %d.val, %.lr.ph ], [ %i.plus1, %bb2 ] 152 %i.promoted = sext i32 %i to i64 153 %x = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 %d.promoted, i64 %i.promoted 154 load i32*, i32** %x 155 %i.plus1 = add nsw i32 %i, 1 156 %cmp = icmp slt i32 %i.plus1, 2 157 br i1 %cmp, label %bb2, label %bb3 158 159bb3: 160 %y = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 0, i64 1 161 load i32*, i32** %y 162 ret void 163} 164 165; CHECK-LABEL: test_modulo_analysis_easy_case 166; CHECK: NoAlias: i32** %x, i32** %y 167 168define void @test_modulo_analysis_easy_case(i64 %i) { 169 %h = alloca [1 x [2 x i32*]], align 16 170 %x = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 %i, i64 0 171 %y = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 0, i64 1 172 load i32*, i32** %x 173 load i32*, i32** %y 174 ret void 175} 176 177; CHECK-LABEL: test_modulo_analysis_in_loop 178; CHECK: NoAlias: i32** %x, i32** %y 179 180define void @test_modulo_analysis_in_loop() { 181 %h = alloca [1 x [2 x i32*]], align 16 182 br label %for.loop 183 184for.loop: 185 %i = phi i32 [ 0, %0 ], [ %i.plus1, %for.loop ] 186 %i.promoted = sext i32 %i to i64 187 %x = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 %i.promoted, i64 0 188 %y = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 0, i64 1 189 load i32*, i32** %x 190 load i32*, i32** %y 191 %i.plus1 = add nsw i32 %i, 1 192 %cmp = icmp slt i32 %i.plus1, 2 193 br i1 %cmp, label %for.loop, label %for.loop.exit 194 195for.loop.exit: 196 ret void 197} 198 199; CHECK-LABEL: test_modulo_analysis_with_global 200; CHECK: MayAlias: i32** %x, i32** %y 201 202define void @test_modulo_analysis_with_global() { 203 %h = alloca [1 x [2 x i32*]], align 16 204 %b = load i32, i32* @b, align 4 205 %b.promoted = sext i32 %b to i64 206 br label %for.loop 207 208for.loop: 209 %i = phi i32 [ 0, %0 ], [ %i.plus1, %for.loop ] 210 %i.promoted = sext i32 %i to i64 211 %x = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 %i.promoted, i64 %b.promoted 212 %y = getelementptr inbounds [1 x [2 x i32*]], [1 x [2 x i32*]]* %h, i64 0, i64 0, i64 1 213 load i32*, i32** %x 214 load i32*, i32** %y 215 %i.plus1 = add nsw i32 %i, 1 216 %cmp = icmp slt i32 %i.plus1, 2 217 br i1 %cmp, label %for.loop, label %for.loop.exit 218 219for.loop.exit: 220 ret void 221} 222 223; CHECK-LABEL: test_const_eval 224; CHECK: NoAlias: i8* %a, i8* %b 225define void @test_const_eval(i8* %ptr, i64 %offset) { 226 %a = getelementptr inbounds i8, i8* %ptr, i64 %offset 227 %a.dup = getelementptr inbounds i8, i8* %ptr, i64 %offset 228 %three = zext i32 3 to i64 229 %b = getelementptr inbounds i8, i8* %a.dup, i64 %three 230 load i8, i8* %a 231 load i8, i8* %b 232 ret void 233} 234 235; CHECK-LABEL: test_const_eval_scaled 236; CHECK: MustAlias: i8* %a, i8* %b 237define void @test_const_eval_scaled(i8* %ptr) { 238 %three = zext i32 3 to i64 239 %six = mul i64 %three, 2 240 %a = getelementptr inbounds i8, i8* %ptr, i64 %six 241 %b = getelementptr inbounds i8, i8* %ptr, i64 6 242 load i8, i8* %a 243 load i8, i8* %b 244 ret void 245} 246 247; CHECK-LABEL: Function: foo 248; CHECK: MustAlias: float* %arrayidx, float* %arrayidx4.84 249define float @foo(i32 *%A, float %rend, float** %wayar) { 250entry: 251 %x0 = load i32, i32* %A, align 4 252 %conv = sext i32 %x0 to i64 253 %mul = shl nsw i64 %conv, 3 254 %call = tail call i8* @malloc(i64 %mul) 255 %x1 = bitcast i8* %call to float* 256 257 %sub = add nsw i32 %x0, -1 258 %idxprom = sext i32 %sub to i64 259 %arrayidx = getelementptr inbounds float, float* %x1, i64 %idxprom 260 store float %rend, float* %arrayidx, align 8 261 262 %indvars.iv76.83 = add nsw i64 %conv, -1 263 %arrayidx4.84 = getelementptr inbounds float, float* %x1, i64 %indvars.iv76.83 264 %x4 = load float, float* %arrayidx4.84, align 8 265 266 ret float %x4 267} 268 269; CHECK-LABEL: Function: test_shl_nuw_zext 270; CHECK: MustAlias: i8* %p.1, i8* %p.2 271define void @test_shl_nuw_zext(i8* %p, i32 %x) { 272 %shl = shl nuw i32 %x, 1 273 %shl.ext = zext i32 %shl to i64 274 %ext = zext i32 %x to i64 275 %ext.shl = shl nuw i64 %ext, 1 276 %p.1 = getelementptr i8, i8* %p, i64 %shl.ext 277 %p.2 = getelementptr i8, i8* %p, i64 %ext.shl 278 load i8, i8* %p.1 279 load i8, i8* %p.2 280 ret void 281} 282 283; CHECK-LABEL: Function: test_shl_nsw_sext 284; CHECK: MustAlias: i8* %p.1, i8* %p.2 285define void @test_shl_nsw_sext(i8* %p, i32 %x) { 286 %shl = shl nsw i32 %x, 1 287 %shl.ext = sext i32 %shl to i64 288 %ext = sext i32 %x to i64 289 %ext.shl = shl nsw i64 %ext, 1 290 %p.1 = getelementptr i8, i8* %p, i64 %shl.ext 291 %p.2 = getelementptr i8, i8* %p, i64 %ext.shl 292 load i8, i8* %p.1 293 load i8, i8* %p.2 294 ret void 295} 296 297; CHECK-LABEL: Function: test_implicit_sext 298; CHECK: MayAlias: i8* %p.1, i8* %p.2 299define void @test_implicit_sext(i8* %p, i32 %x) { 300 %add = add i32 %x, 1 301 %ext = sext i32 %x to i64 302 %ext.add = add i64 %ext, 1 303 %p.1 = getelementptr i8, i8* %p, i32 %add 304 %p.2 = getelementptr i8, i8* %p, i64 %ext.add 305 load i8, i8* %p.1 306 load i8, i8* %p.2 307 ret void 308} 309 310; CHECK-LABEL: Function: test_partial_decomposition 311; CHECK: MustAlias: i8* %p.1, i8* %p.2 312define void @test_partial_decomposition(i8* %p, i32 %x) { 313 %add = add i32 %x, 1 314 %add.1 = add nsw i32 %add, 1 315 %add.2 = add nsw i32 %add, 1 316 %p.1 = getelementptr i8, i8* %p, i32 %add.1 317 %p.2 = getelementptr i8, i8* %p, i32 %add.2 318 load i8, i8* %p.1 319 load i8, i8* %p.2 320 ret void 321} 322 323; Function Attrs: nounwind 324declare noalias i8* @malloc(i64) 325