1 ; RUN: opt < %s -loop-reroll -S | 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 ; int foo(int a); 6 ; void bar(int *x) { 7 ; for (int i = 0; i < 500; i += 3) { 8 ; foo(i); 9 ; foo(i+1); 10 ; foo(i+2); 11 ; } 12 ; } 13 14 ; Function Attrs: nounwind uwtable 15 define void @bar(i32* nocapture readnone %x) #0 { 16 entry: 17 br label %for.body 18 19 for.body: ; preds = %for.body, %entry 20 %i.08 = phi i32 [ 0, %entry ], [ %add3, %for.body ] 21 %call = tail call i32 @foo(i32 %i.08) #1 22 %add = add nsw i32 %i.08, 1 23 %call1 = tail call i32 @foo(i32 %add) #1 24 %add2 = add nsw i32 %i.08, 2 25 %call3 = tail call i32 @foo(i32 %add2) #1 26 %add3 = add nsw i32 %i.08, 3 27 %exitcond = icmp sge i32 %add3, 500 28 br i1 %exitcond, label %for.end, label %for.body 29 30 ; CHECK-LABEL: @bar 31 32 ; CHECK: for.body: 33 ; CHECK: %indvar = phi i32 [ %indvar.next, %for.body ], [ 0, %entry ] 34 ; CHECK: %call = tail call i32 @foo(i32 %indvar) #1 35 ; CHECK: %indvar.next = add i32 %indvar, 1 36 ; CHECK: %exitcond1 = icmp eq i32 %indvar, 500 37 ; CHECK: br i1 %exitcond1, label %for.end, label %for.body 38 39 ; CHECK: ret 40 41 for.end: ; preds = %for.body 42 ret void 43 } 44 45 declare i32 @foo(i32) 46 47 ; void hi1(int *x) { 48 ; for (int i = 0; i < 1500; i += 3) { 49 ; x[i] = foo(0); 50 ; x[i+1] = foo(0); 51 ; x[i+2] = foo(0); 52 ; } 53 ; } 54 55 ; Function Attrs: nounwind uwtable 56 define void @hi1(i32* nocapture %x) #0 { 57 entry: 58 br label %for.body 59 60 for.body: ; preds = %entry, %for.body 61 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 62 %call = tail call i32 @foo(i32 0) #1 63 %arrayidx = getelementptr inbounds i32, i32* %x, i64 %indvars.iv 64 store i32 %call, i32* %arrayidx, align 4 65 %call1 = tail call i32 @foo(i32 0) #1 66 %0 = add nsw i64 %indvars.iv, 1 67 %arrayidx3 = getelementptr inbounds i32, i32* %x, i64 %0 68 store i32 %call1, i32* %arrayidx3, align 4 69 %call4 = tail call i32 @foo(i32 0) #1 70 %1 = add nsw i64 %indvars.iv, 2 71 %arrayidx7 = getelementptr inbounds i32, i32* %x, i64 %1 72 store i32 %call4, i32* %arrayidx7, align 4 73 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 3 74 %2 = trunc i64 %indvars.iv.next to i32 75 %cmp = icmp slt i32 %2, 1500 76 br i1 %cmp, label %for.body, label %for.end 77 78 ; CHECK-LABEL: @hi1 79 80 ; CHECK: for.body: 81 ; CHECK: %indvar = phi i64 [ %indvar.next, %for.body ], [ 0, %entry ] 82 ; CHECK: %0 = trunc i64 %indvar to i32 83 ; CHECK: %call = tail call i32 @foo(i32 0) #1 84 ; CHECK: %arrayidx = getelementptr inbounds i32, i32* %x, i64 %indvar 85 ; CHECK: store i32 %call, i32* %arrayidx, align 4 86 ; CHECK: %indvar.next = add i64 %indvar, 1 87 ; CHECK: %exitcond = icmp eq i32 %0, 1499 88 ; CHECK: br i1 %exitcond, label %for.end, label %for.body 89 90 ; CHECK: ret 91 92 for.end: ; preds = %for.body 93 ret void 94 } 95 96 ; void hi2(int *x) { 97 ; for (int i = 0; i < 500; ++i) { 98 ; x[3*i] = foo(0); 99 ; x[3*i+1] = foo(0); 100 ; x[3*i+2] = foo(0); 101 ; } 102 ; } 103 104 ; Function Attrs: nounwind uwtable 105 define void @hi2(i32* nocapture %x) #0 { 106 entry: 107 br label %for.body 108 109 for.body: ; preds = %for.body, %entry 110 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 111 %call = tail call i32 @foo(i32 0) #1 112 %0 = mul nsw i64 %indvars.iv, 3 113 %arrayidx = getelementptr inbounds i32, i32* %x, i64 %0 114 store i32 %call, i32* %arrayidx, align 4 115 %call1 = tail call i32 @foo(i32 0) #1 116 %1 = add nsw i64 %0, 1 117 %arrayidx4 = getelementptr inbounds i32, i32* %x, i64 %1 118 store i32 %call1, i32* %arrayidx4, align 4 119 %call5 = tail call i32 @foo(i32 0) #1 120 %2 = add nsw i64 %0, 2 121 %arrayidx9 = getelementptr inbounds i32, i32* %x, i64 %2 122 store i32 %call5, i32* %arrayidx9, align 4 123 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 124 %exitcond = icmp eq i64 %indvars.iv.next, 500 125 br i1 %exitcond, label %for.end, label %for.body 126 127 ; CHECK-LABEL: @hi2 128 129 ; CHECK: for.body: 130 ; CHECK: %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 131 ; CHECK: %call = tail call i32 @foo(i32 0) #1 132 ; CHECK: %arrayidx = getelementptr inbounds i32, i32* %x, i64 %indvars.iv 133 ; CHECK: store i32 %call, i32* %arrayidx, align 4 134 ; CHECK: %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 135 ; CHECK: %exitcond1 = icmp eq i64 %indvars.iv, 1499 136 ; CHECK: br i1 %exitcond1, label %for.end, label %for.body 137 138 ; CHECK: ret 139 140 for.end: ; preds = %for.body 141 ret void 142 } 143 144 ; void goo(float alpha, float *a, float *b) { 145 ; for (int i = 0; i < 3200; i += 5) { 146 ; a[i] += alpha * b[i]; 147 ; a[i + 1] += alpha * b[i + 1]; 148 ; a[i + 2] += alpha * b[i + 2]; 149 ; a[i + 3] += alpha * b[i + 3]; 150 ; a[i + 4] += alpha * b[i + 4]; 151 ; } 152 ; } 153 154 ; Function Attrs: nounwind uwtable 155 define void @goo(float %alpha, float* nocapture %a, float* nocapture readonly %b) #0 { 156 entry: 157 br label %for.body 158 159 for.body: ; preds = %entry, %for.body 160 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 161 %arrayidx = getelementptr inbounds float, float* %b, i64 %indvars.iv 162 %0 = load float, float* %arrayidx, align 4 163 %mul = fmul float %0, %alpha 164 %arrayidx2 = getelementptr inbounds float, float* %a, i64 %indvars.iv 165 %1 = load float, float* %arrayidx2, align 4 166 %add = fadd float %1, %mul 167 store float %add, float* %arrayidx2, align 4 168 %2 = add nsw i64 %indvars.iv, 1 169 %arrayidx5 = getelementptr inbounds float, float* %b, i64 %2 170 %3 = load float, float* %arrayidx5, align 4 171 %mul6 = fmul float %3, %alpha 172 %arrayidx9 = getelementptr inbounds float, float* %a, i64 %2 173 %4 = load float, float* %arrayidx9, align 4 174 %add10 = fadd float %4, %mul6 175 store float %add10, float* %arrayidx9, align 4 176 %5 = add nsw i64 %indvars.iv, 2 177 %arrayidx13 = getelementptr inbounds float, float* %b, i64 %5 178 %6 = load float, float* %arrayidx13, align 4 179 %mul14 = fmul float %6, %alpha 180 %arrayidx17 = getelementptr inbounds float, float* %a, i64 %5 181 %7 = load float, float* %arrayidx17, align 4 182 %add18 = fadd float %7, %mul14 183 store float %add18, float* %arrayidx17, align 4 184 %8 = add nsw i64 %indvars.iv, 3 185 %arrayidx21 = getelementptr inbounds float, float* %b, i64 %8 186 %9 = load float, float* %arrayidx21, align 4 187 %mul22 = fmul float %9, %alpha 188 %arrayidx25 = getelementptr inbounds float, float* %a, i64 %8 189 %10 = load float, float* %arrayidx25, align 4 190 %add26 = fadd float %10, %mul22 191 store float %add26, float* %arrayidx25, align 4 192 %11 = add nsw i64 %indvars.iv, 4 193 %arrayidx29 = getelementptr inbounds float, float* %b, i64 %11 194 %12 = load float, float* %arrayidx29, align 4 195 %mul30 = fmul float %12, %alpha 196 %arrayidx33 = getelementptr inbounds float, float* %a, i64 %11 197 %13 = load float, float* %arrayidx33, align 4 198 %add34 = fadd float %13, %mul30 199 store float %add34, float* %arrayidx33, align 4 200 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 5 201 %14 = trunc i64 %indvars.iv.next to i32 202 %cmp = icmp slt i32 %14, 3200 203 br i1 %cmp, label %for.body, label %for.end 204 205 ; CHECK-LABEL: @goo 206 207 ; CHECK: for.body: 208 ; CHECK: %indvar = phi i64 [ %indvar.next, %for.body ], [ 0, %entry ] 209 ; CHECK: %0 = trunc i64 %indvar to i32 210 ; CHECK: %arrayidx = getelementptr inbounds float, float* %b, i64 %indvar 211 ; CHECK: %1 = load float, float* %arrayidx, align 4 212 ; CHECK: %mul = fmul float %1, %alpha 213 ; CHECK: %arrayidx2 = getelementptr inbounds float, float* %a, i64 %indvar 214 ; CHECK: %2 = load float, float* %arrayidx2, align 4 215 ; CHECK: %add = fadd float %2, %mul 216 ; CHECK: store float %add, float* %arrayidx2, align 4 217 ; CHECK: %indvar.next = add i64 %indvar, 1 218 ; CHECK: %exitcond = icmp eq i32 %0, 3199 219 ; CHECK: br i1 %exitcond, label %for.end, label %for.body 220 221 ; CHECK: ret 222 223 for.end: ; preds = %for.body 224 ret void 225 } 226 227 ; void hoo(float alpha, float *a, float *b, int *ip) { 228 ; for (int i = 0; i < 3200; i += 5) { 229 ; a[i] += alpha * b[ip[i]]; 230 ; a[i + 1] += alpha * b[ip[i + 1]]; 231 ; a[i + 2] += alpha * b[ip[i + 2]]; 232 ; a[i + 3] += alpha * b[ip[i + 3]]; 233 ; a[i + 4] += alpha * b[ip[i + 4]]; 234 ; } 235 ; } 236 237 ; Function Attrs: nounwind uwtable 238 define void @hoo(float %alpha, float* nocapture %a, float* nocapture readonly %b, i32* nocapture readonly %ip) #0 { 239 entry: 240 br label %for.body 241 242 for.body: ; preds = %entry, %for.body 243 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 244 %arrayidx = getelementptr inbounds i32, i32* %ip, i64 %indvars.iv 245 %0 = load i32, i32* %arrayidx, align 4 246 %idxprom1 = sext i32 %0 to i64 247 %arrayidx2 = getelementptr inbounds float, float* %b, i64 %idxprom1 248 %1 = load float, float* %arrayidx2, align 4 249 %mul = fmul float %1, %alpha 250 %arrayidx4 = getelementptr inbounds float, float* %a, i64 %indvars.iv 251 %2 = load float, float* %arrayidx4, align 4 252 %add = fadd float %2, %mul 253 store float %add, float* %arrayidx4, align 4 254 %3 = add nsw i64 %indvars.iv, 1 255 %arrayidx7 = getelementptr inbounds i32, i32* %ip, i64 %3 256 %4 = load i32, i32* %arrayidx7, align 4 257 %idxprom8 = sext i32 %4 to i64 258 %arrayidx9 = getelementptr inbounds float, float* %b, i64 %idxprom8 259 %5 = load float, float* %arrayidx9, align 4 260 %mul10 = fmul float %5, %alpha 261 %arrayidx13 = getelementptr inbounds float, float* %a, i64 %3 262 %6 = load float, float* %arrayidx13, align 4 263 %add14 = fadd float %6, %mul10 264 store float %add14, float* %arrayidx13, align 4 265 %7 = add nsw i64 %indvars.iv, 2 266 %arrayidx17 = getelementptr inbounds i32, i32* %ip, i64 %7 267 %8 = load i32, i32* %arrayidx17, align 4 268 %idxprom18 = sext i32 %8 to i64 269 %arrayidx19 = getelementptr inbounds float, float* %b, i64 %idxprom18 270 %9 = load float, float* %arrayidx19, align 4 271 %mul20 = fmul float %9, %alpha 272 %arrayidx23 = getelementptr inbounds float, float* %a, i64 %7 273 %10 = load float, float* %arrayidx23, align 4 274 %add24 = fadd float %10, %mul20 275 store float %add24, float* %arrayidx23, align 4 276 %11 = add nsw i64 %indvars.iv, 3 277 %arrayidx27 = getelementptr inbounds i32, i32* %ip, i64 %11 278 %12 = load i32, i32* %arrayidx27, align 4 279 %idxprom28 = sext i32 %12 to i64 280 %arrayidx29 = getelementptr inbounds float, float* %b, i64 %idxprom28 281 %13 = load float, float* %arrayidx29, align 4 282 %mul30 = fmul float %13, %alpha 283 %arrayidx33 = getelementptr inbounds float, float* %a, i64 %11 284 %14 = load float, float* %arrayidx33, align 4 285 %add34 = fadd float %14, %mul30 286 store float %add34, float* %arrayidx33, align 4 287 %15 = add nsw i64 %indvars.iv, 4 288 %arrayidx37 = getelementptr inbounds i32, i32* %ip, i64 %15 289 %16 = load i32, i32* %arrayidx37, align 4 290 %idxprom38 = sext i32 %16 to i64 291 %arrayidx39 = getelementptr inbounds float, float* %b, i64 %idxprom38 292 %17 = load float, float* %arrayidx39, align 4 293 %mul40 = fmul float %17, %alpha 294 %arrayidx43 = getelementptr inbounds float, float* %a, i64 %15 295 %18 = load float, float* %arrayidx43, align 4 296 %add44 = fadd float %18, %mul40 297 store float %add44, float* %arrayidx43, align 4 298 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 5 299 %19 = trunc i64 %indvars.iv.next to i32 300 %cmp = icmp slt i32 %19, 3200 301 br i1 %cmp, label %for.body, label %for.end 302 303 ; CHECK-LABEL: @hoo 304 305 ; CHECK: for.body: 306 ; CHECK: %indvar = phi i64 [ %indvar.next, %for.body ], [ 0, %entry ] 307 ; CHECK: %0 = trunc i64 %indvar to i32 308 ; CHECK: %arrayidx = getelementptr inbounds i32, i32* %ip, i64 %indvar 309 ; CHECK: %1 = load i32, i32* %arrayidx, align 4 310 ; CHECK: %idxprom1 = sext i32 %1 to i64 311 ; CHECK: %arrayidx2 = getelementptr inbounds float, float* %b, i64 %idxprom1 312 ; CHECK: %2 = load float, float* %arrayidx2, align 4 313 ; CHECK: %mul = fmul float %2, %alpha 314 ; CHECK: %arrayidx4 = getelementptr inbounds float, float* %a, i64 %indvar 315 ; CHECK: %3 = load float, float* %arrayidx4, align 4 316 ; CHECK: %add = fadd float %3, %mul 317 ; CHECK: store float %add, float* %arrayidx4, align 4 318 ; CHECK: %indvar.next = add i64 %indvar, 1 319 ; CHECK: %exitcond = icmp eq i32 %0, 3199 320 ; CHECK: br i1 %exitcond, label %for.end, label %for.body 321 322 ; CHECK: ret 323 324 for.end: ; preds = %for.body 325 ret void 326 } 327 328 ; void multi1(int *x) { 329 ; y = foo(0) 330 ; for (int i = 0; i < 500; ++i) { 331 ; x[3*i] = y; 332 ; x[3*i+1] = y; 333 ; x[3*i+2] = y; 334 ; x[3*i+6] = y; 335 ; x[3*i+7] = y; 336 ; x[3*i+8] = y; 337 ; } 338 ; } 339 340 ; Function Attrs: nounwind uwtable 341 define void @multi1(i32* nocapture %x) #0 { 342 entry: 343 %call = tail call i32 @foo(i32 0) #1 344 br label %for.body 345 346 for.body: ; preds = %for.body, %entry 347 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 348 %0 = mul nsw i64 %indvars.iv, 3 349 %arrayidx = getelementptr inbounds i32, i32* %x, i64 %0 350 store i32 %call, i32* %arrayidx, align 4 351 %1 = add nsw i64 %0, 1 352 %arrayidx4 = getelementptr inbounds i32, i32* %x, i64 %1 353 store i32 %call, i32* %arrayidx4, align 4 354 %2 = add nsw i64 %0, 2 355 %arrayidx9 = getelementptr inbounds i32, i32* %x, i64 %2 356 store i32 %call, i32* %arrayidx9, align 4 357 %3 = add nsw i64 %0, 6 358 %arrayidx6 = getelementptr inbounds i32, i32* %x, i64 %3 359 store i32 %call, i32* %arrayidx6, align 4 360 %4 = add nsw i64 %0, 7 361 %arrayidx7 = getelementptr inbounds i32, i32* %x, i64 %4 362 store i32 %call, i32* %arrayidx7, align 4 363 %5 = add nsw i64 %0, 8 364 %arrayidx8 = getelementptr inbounds i32, i32* %x, i64 %5 365 store i32 %call, i32* %arrayidx8, align 4 366 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 367 %exitcond = icmp eq i64 %indvars.iv.next, 500 368 br i1 %exitcond, label %for.end, label %for.body 369 370 ; CHECK-LABEL: @multi1 371 372 ; CHECK:for.body: 373 ; CHECK: %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 374 ; CHECK: %0 = add i64 %indvars.iv, 6 375 ; CHECK: %arrayidx = getelementptr inbounds i32, i32* %x, i64 %indvars.iv 376 ; CHECK: store i32 %call, i32* %arrayidx, align 4 377 ; CHECK: %arrayidx6 = getelementptr inbounds i32, i32* %x, i64 %0 378 ; CHECK: store i32 %call, i32* %arrayidx6, align 4 379 ; CHECK: %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 380 ; CHECK: %exitcond1 = icmp eq i64 %indvars.iv, 1499 381 ; CHECK: br i1 %exitcond1, label %for.end, label %for.body 382 383 for.end: ; preds = %for.body 384 ret void 385 } 386 387 ; void multi2(int *x) { 388 ; y = foo(0) 389 ; for (int i = 0; i < 500; ++i) { 390 ; x[3*i] = y; 391 ; x[3*i+1] = y; 392 ; x[3*i+2] = y; 393 ; x[3*(i+1)] = y; 394 ; x[3*(i+1)+1] = y; 395 ; x[3*(i+1)+2] = y; 396 ; } 397 ; } 398 399 ; Function Attrs: nounwind uwtable 400 define void @multi2(i32* nocapture %x) #0 { 401 entry: 402 %call = tail call i32 @foo(i32 0) #1 403 br label %for.body 404 405 for.body: ; preds = %for.body, %entry 406 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 407 %0 = mul nsw i64 %indvars.iv, 3 408 %add = add nsw i64 %indvars.iv, 1 409 %newmul = mul nsw i64 %add, 3 410 %arrayidx = getelementptr inbounds i32, i32* %x, i64 %0 411 store i32 %call, i32* %arrayidx, align 4 412 %1 = add nsw i64 %0, 1 413 %arrayidx4 = getelementptr inbounds i32, i32* %x, i64 %1 414 store i32 %call, i32* %arrayidx4, align 4 415 %2 = add nsw i64 %0, 2 416 %arrayidx9 = getelementptr inbounds i32, i32* %x, i64 %2 417 store i32 %call, i32* %arrayidx9, align 4 418 %arrayidx6 = getelementptr inbounds i32, i32* %x, i64 %newmul 419 store i32 %call, i32* %arrayidx6, align 4 420 %3 = add nsw i64 %newmul, 1 421 %arrayidx7 = getelementptr inbounds i32, i32* %x, i64 %3 422 store i32 %call, i32* %arrayidx7, align 4 423 %4 = add nsw i64 %newmul, 2 424 %arrayidx8 = getelementptr inbounds i32, i32* %x, i64 %4 425 store i32 %call, i32* %arrayidx8, align 4 426 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 427 %exitcond = icmp eq i64 %indvars.iv.next, 500 428 br i1 %exitcond, label %for.end, label %for.body 429 430 ; CHECK-LABEL: @multi2 431 432 ; CHECK:for.body: 433 ; CHECK: %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 434 ; CHECK: %0 = add i64 %indvars.iv, 3 435 ; CHECK: %arrayidx = getelementptr inbounds i32, i32* %x, i64 %indvars.iv 436 ; CHECK: store i32 %call, i32* %arrayidx, align 4 437 ; CHECK: %arrayidx6 = getelementptr inbounds i32, i32* %x, i64 %0 438 ; CHECK: store i32 %call, i32* %arrayidx6, align 4 439 ; CHECK: %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 440 ; CHECK: %exitcond1 = icmp eq i64 %indvars.iv, 1499 441 ; CHECK: br i1 %exitcond1, label %for.end, label %for.body 442 443 for.end: ; preds = %for.body 444 ret void 445 } 446 447 ; void multi3(int *x) { 448 ; y = foo(0) 449 ; for (int i = 0; i < 500; ++i) { 450 ; // Note: No zero index 451 ; x[3*i+3] = y; 452 ; x[3*i+4] = y; 453 ; x[3*i+5] = y; 454 ; } 455 ; } 456 457 ; Function Attrs: nounwind uwtable 458 define void @multi3(i32* nocapture %x) #0 { 459 entry: 460 %call = tail call i32 @foo(i32 0) #1 461 br label %for.body 462 463 for.body: ; preds = %for.body, %entry 464 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 465 %0 = mul nsw i64 %indvars.iv, 3 466 %x0 = add nsw i64 %0, 3 467 %add = add nsw i64 %indvars.iv, 1 468 %arrayidx = getelementptr inbounds i32, i32* %x, i64 %x0 469 store i32 %call, i32* %arrayidx, align 4 470 %1 = add nsw i64 %0, 4 471 %arrayidx4 = getelementptr inbounds i32, i32* %x, i64 %1 472 store i32 %call, i32* %arrayidx4, align 4 473 %2 = add nsw i64 %0, 5 474 %arrayidx9 = getelementptr inbounds i32, i32* %x, i64 %2 475 store i32 %call, i32* %arrayidx9, align 4 476 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 477 %exitcond = icmp eq i64 %indvars.iv.next, 500 478 br i1 %exitcond, label %for.end, label %for.body 479 480 ; CHECK-LABEL: @multi3 481 ; CHECK: for.body: 482 ; CHECK: %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 483 ; CHECK: %0 = add i64 %indvars.iv, 3 484 ; CHECK: %arrayidx = getelementptr inbounds i32, i32* %x, i64 %0 485 ; CHECK: store i32 %call, i32* %arrayidx, align 4 486 ; CHECK: %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 487 ; CHECK: %exitcond1 = icmp eq i64 %indvars.iv, 1499 488 ; CHECK: br i1 %exitcond1, label %for.end, label %for.body 489 490 for.end: ; preds = %for.body 491 ret void 492 } 493 494 ; int foo(int a); 495 ; void bar2(int *x, int y, int z) { 496 ; for (int i = 0; i < 500; i += 3) { 497 ; foo(i+y+i*z); // Slightly reordered instruction order 498 ; foo(i+1+y+(i+1)*z); 499 ; foo(i+2+y+(i+2)*z); 500 ; } 501 ; } 502 503 ; Function Attrs: nounwind uwtable 504 define void @bar2(i32* nocapture readnone %x, i32 %y, i32 %z) #0 { 505 entry: 506 br label %for.body 507 508 for.body: ; preds = %for.body, %entry 509 %i.08 = phi i32 [ 0, %entry ], [ %add3, %for.body ] 510 511 %tmp1 = add i32 %i.08, %y 512 %tmp2 = mul i32 %i.08, %z 513 %tmp3 = add i32 %tmp2, %tmp1 514 %call = tail call i32 @foo(i32 %tmp3) #1 515 516 %add = add nsw i32 %i.08, 1 517 %tmp2a = mul i32 %add, %z 518 %tmp1a = add i32 %add, %y 519 %tmp3a = add i32 %tmp2a, %tmp1a 520 %calla = tail call i32 @foo(i32 %tmp3a) #1 521 522 %add2 = add nsw i32 %i.08, 2 523 %tmp2b = mul i32 %add2, %z 524 %tmp1b = add i32 %add2, %y 525 %tmp3b = add i32 %tmp2b, %tmp1b 526 %callb = tail call i32 @foo(i32 %tmp3b) #1 527 528 %add3 = add nsw i32 %i.08, 3 529 530 %exitcond = icmp sge i32 %add3, 500 531 br i1 %exitcond, label %for.end, label %for.body 532 533 ; CHECK-LABEL: @bar2 534 535 ; CHECK: for.body: 536 ; CHECK: %indvar = phi i32 [ %indvar.next, %for.body ], [ 0, %entry ] 537 ; CHECK: %tmp1 = add i32 %indvar, %y 538 ; CHECK: %tmp2 = mul i32 %indvar, %z 539 ; CHECK: %tmp3 = add i32 %tmp2, %tmp1 540 ; CHECK: %call = tail call i32 @foo(i32 %tmp3) #1 541 ; CHECK: %indvar.next = add i32 %indvar, 1 542 ; CHECK: %exitcond1 = icmp eq i32 %indvar, 500 543 ; CHECK: br i1 %exitcond1, label %for.end, label %for.body 544 545 ; CHECK: ret 546 547 for.end: ; preds = %for.body 548 ret void 549 } 550 551 %struct.s = type { i32, i32 } 552 553 ; Function Attrs: nounwind uwtable 554 define void @gep1(%struct.s* nocapture %x) #0 { 555 entry: 556 %call = tail call i32 @foo(i32 0) #1 557 br label %for.body 558 559 for.body: ; preds = %for.body, %entry 560 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 561 %0 = mul nsw i64 %indvars.iv, 3 562 %arrayidx = getelementptr inbounds %struct.s, %struct.s* %x, i64 %0, i32 0 563 store i32 %call, i32* %arrayidx, align 4 564 %1 = add nsw i64 %0, 1 565 %arrayidx4 = getelementptr inbounds %struct.s, %struct.s* %x, i64 %1, i32 0 566 store i32 %call, i32* %arrayidx4, align 4 567 %2 = add nsw i64 %0, 2 568 %arrayidx9 = getelementptr inbounds %struct.s, %struct.s* %x, i64 %2, i32 0 569 store i32 %call, i32* %arrayidx9, align 4 570 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 571 %exitcond = icmp eq i64 %indvars.iv.next, 500 572 br i1 %exitcond, label %for.end, label %for.body 573 574 ; CHECK-LABEL: @gep1 575 ; This test is a crash test only. 576 ; CHECK: ret 577 for.end: ; preds = %for.body 578 ret void 579 } 580 581 define void @gep-indexing(i32* nocapture %x) { 582 entry: 583 %call = tail call i32 @foo(i32 0) #1 584 br label %for.body 585 586 for.body: ; preds = %for.body, %entry 587 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 588 %0 = mul nsw i64 %indvars.iv, 3 589 %arrayidx = getelementptr inbounds i32, i32* %x, i64 %0 590 store i32 %call, i32* %arrayidx, align 4 591 %arrayidx4 = getelementptr inbounds i32, i32* %arrayidx, i64 1 592 store i32 %call, i32* %arrayidx4, align 4 593 %arrayidx9 = getelementptr inbounds i32, i32* %arrayidx, i64 2 594 store i32 %call, i32* %arrayidx9, align 4 595 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 596 %exitcond = icmp eq i64 %indvars.iv.next, 500 597 br i1 %exitcond, label %for.end, label %for.body 598 599 ; CHECK-LABEL: @gep-indexing 600 ; CHECK: for.body: 601 ; CHECK-NEXT: %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 602 ; CHECK-NEXT: %scevgep = getelementptr i32, i32* %x, i64 %indvars.iv 603 ; CHECK-NEXT: store i32 %call, i32* %scevgep, align 4 604 ; CHECK-NEXT: %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 605 ; CHECK-NEXT: %exitcond1 = icmp eq i64 %indvars.iv, 1499 606 ; CHECK-NEXT: br i1 %exitcond1, label %for.end, label %for.body 607 608 for.end: ; preds = %for.body 609 ret void 610 } 611 612 613 define void @unordered_atomic_ops(i32* noalias %buf_0, i32* noalias %buf_1) { 614 ; CHECK-LABEL: @unordered_atomic_ops( 615 616 ; CHECK: for.body: 617 ; CHECK-NEXT: %indvar = phi i32 [ %indvar.next, %for.body ], [ 0, %entry ] 618 ; CHECK-NEXT: %buf0_a = getelementptr i32, i32* %buf_0, i32 %indvar 619 ; CHECK-NEXT: %buf1_a = getelementptr i32, i32* %buf_1, i32 %indvar 620 ; CHECK-NEXT: %va = load atomic i32, i32* %buf0_a unordered, align 4 621 ; CHECK-NEXT: store atomic i32 %va, i32* %buf1_a unordered, align 4 622 ; CHECK-NEXT: %indvar.next = add i32 %indvar, 1 623 ; CHECK-NEXT: %exitcond = icmp eq i32 %indvar, 3199 624 ; CHECK-NEXT: br i1 %exitcond, label %for.end, label %for.body 625 626 entry: 627 br label %for.body 628 629 for.body: 630 %indvars.iv = phi i32 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 631 %indvars.iv.next = add i32 %indvars.iv, 2 632 %indvars.mid = add i32 %indvars.iv, 1 633 %buf0_a = getelementptr i32, i32* %buf_0, i32 %indvars.iv 634 %buf0_b = getelementptr i32, i32* %buf_0, i32 %indvars.mid 635 %buf1_a = getelementptr i32, i32* %buf_1, i32 %indvars.iv 636 %buf1_b = getelementptr i32, i32* %buf_1, i32 %indvars.mid 637 %va = load atomic i32, i32* %buf0_a unordered, align 4 638 %vb = load atomic i32, i32* %buf0_b unordered, align 4 639 store atomic i32 %va, i32* %buf1_a unordered, align 4 640 store atomic i32 %vb, i32* %buf1_b unordered, align 4 641 %cmp = icmp slt i32 %indvars.iv.next, 3200 642 br i1 %cmp, label %for.body, label %for.end 643 644 for.end: 645 ret void 646 } 647 648 define void @unordered_atomic_ops_nomatch(i32* noalias %buf_0, i32* noalias %buf_1) { 649 ; Negative test 650 651 ; CHECK-LABEL: @unordered_atomic_ops_nomatch( 652 entry: 653 br label %for.body 654 655 for.body: 656 ; CHECK: for.body: 657 ; CHECK: %indvars.iv.next = add i32 %indvars.iv, 2 658 ; CHECK: %indvars.mid = add i32 %indvars.iv, 1 659 ; CHECK: %cmp = icmp slt i32 %indvars.iv.next, 3200 660 ; CHECK: br i1 %cmp, label %for.body, label %for.end 661 662 %indvars.iv = phi i32 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 663 %indvars.iv.next = add i32 %indvars.iv, 2 664 %indvars.mid = add i32 %indvars.iv, 1 665 %buf0_a = getelementptr i32, i32* %buf_0, i32 %indvars.iv 666 %buf0_b = getelementptr i32, i32* %buf_0, i32 %indvars.mid 667 %buf1_a = getelementptr i32, i32* %buf_1, i32 %indvars.iv 668 %buf1_b = getelementptr i32, i32* %buf_1, i32 %indvars.mid 669 %va = load atomic i32, i32* %buf0_a unordered, align 4 670 %vb = load atomic i32, i32* %buf0_b unordered, align 4 671 store i32 %va, i32* %buf1_a, align 4 ;; Not atomic 672 store atomic i32 %vb, i32* %buf1_b unordered, align 4 673 %cmp = icmp slt i32 %indvars.iv.next, 3200 674 br i1 %cmp, label %for.body, label %for.end 675 676 for.end: 677 ret void 678 } 679 680 define void @ordered_atomic_ops(i32* noalias %buf_0, i32* noalias %buf_1) { 681 ; Negative test 682 683 ; CHECK-LABEL: @ordered_atomic_ops( 684 entry: 685 br label %for.body 686 687 for.body: 688 ; CHECK: for.body: 689 ; CHECK: %indvars.iv.next = add i32 %indvars.iv, 2 690 ; CHECK: %indvars.mid = add i32 %indvars.iv, 1 691 ; CHECK: %cmp = icmp slt i32 %indvars.iv.next, 3200 692 ; CHECK: br i1 %cmp, label %for.body, label %for.end 693 694 %indvars.iv = phi i32 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 695 %indvars.iv.next = add i32 %indvars.iv, 2 696 %indvars.mid = add i32 %indvars.iv, 1 697 %buf0_a = getelementptr i32, i32* %buf_0, i32 %indvars.iv 698 %buf0_b = getelementptr i32, i32* %buf_0, i32 %indvars.mid 699 %buf1_a = getelementptr i32, i32* %buf_1, i32 %indvars.iv 700 %buf1_b = getelementptr i32, i32* %buf_1, i32 %indvars.mid 701 %va = load atomic i32, i32* %buf0_a acquire, align 4 702 %vb = load atomic i32, i32* %buf0_b acquire, align 4 703 store atomic i32 %va, i32* %buf1_a release, align 4 704 store atomic i32 %vb, i32* %buf1_b release, align 4 705 %cmp = icmp slt i32 %indvars.iv.next, 3200 706 br i1 %cmp, label %for.body, label %for.end 707 708 for.end: 709 ret void 710 } 711 712 define void @unordered_atomic_ops_with_fence(i32* noalias %buf_0, i32* noalias %buf_1) { 713 ; CHECK-LABEL: @unordered_atomic_ops_with_fence( 714 entry: 715 br label %for.body 716 717 for.body: 718 ; CHECK: for.body: 719 ; CHECK: %va = load atomic i32, i32* %buf0_a unordered, align 4 720 ; CHECK-NEXT: %vb = load atomic i32, i32* %buf0_b unordered, align 4 721 ; CHECK-NEXT: fence seq_cst 722 ; CHECK-NEXT: store atomic i32 %va, i32* %buf1_a unordered, align 4 723 ; CHECK-NEXT: store atomic i32 %vb, i32* %buf1_b unordered, align 4 724 725 %indvars.iv = phi i32 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 726 %indvars.iv.next = add i32 %indvars.iv, 2 727 %indvars.mid = add i32 %indvars.iv, 1 728 %buf0_a = getelementptr i32, i32* %buf_0, i32 %indvars.iv 729 %buf0_b = getelementptr i32, i32* %buf_0, i32 %indvars.mid 730 %buf1_a = getelementptr i32, i32* %buf_1, i32 %indvars.iv 731 %buf1_b = getelementptr i32, i32* %buf_1, i32 %indvars.mid 732 %va = load atomic i32, i32* %buf0_a unordered, align 4 733 %vb = load atomic i32, i32* %buf0_b unordered, align 4 734 fence seq_cst 735 store atomic i32 %va, i32* %buf1_a unordered, align 4 736 store atomic i32 %vb, i32* %buf1_b unordered, align 4 737 %cmp = icmp slt i32 %indvars.iv.next, 3200 738 br i1 %cmp, label %for.body, label %for.end 739 740 for.end: 741 ret void 742 } 743 744 define void @pointer_bitcast_baseinst(i16* %arg, i8* %arg1, i64 %arg2) { 745 ; CHECK-LABEL: @pointer_bitcast_baseinst( 746 ; CHECK: bb3: 747 ; CHECK-NEXT: %indvar = phi i64 [ %indvar.next, %bb3 ], [ 0, %bb ] 748 ; CHECK-NEXT: %4 = shl i64 %indvar, 3 749 ; CHECK-NEXT: %5 = add i64 %4, 1 750 ; CHECK-NEXT: %tmp5 = shl nuw i64 %5, 1 751 ; CHECK-NEXT: %tmp6 = getelementptr i8, i8* %arg1, i64 %tmp5 752 ; CHECK-NEXT: %tmp7 = bitcast i8* %tmp6 to <8 x i16>* 753 ; CHECK-NEXT: %tmp8 = load <8 x i16>, <8 x i16>* %tmp7, align 2 754 ; CHECK-NEXT: %tmp13 = getelementptr i16, i16* %arg, i64 %5 755 ; CHECK-NEXT: %tmp14 = bitcast i16* %tmp13 to <8 x i16>* 756 ; CHECK-NEXT: store <8 x i16> %tmp8, <8 x i16>* %tmp14, align 2 757 ; CHECK-NEXT: %indvar.next = add i64 %indvar, 1 758 ; CHECK-NEXT: %exitcond = icmp eq i64 %indvar, %3 759 ; CHECK-NEXT: br i1 %exitcond, label %bb19, label %bb3 760 bb: 761 br label %bb3 762 763 bb3: ; preds = %bb3, %bb 764 %tmp = phi i64 [ 1, %bb ], [ %tmp17, %bb3 ] 765 %tmp4 = add nuw i64 %tmp, 8 766 %tmp5 = shl nuw i64 %tmp, 1 767 %tmp6 = getelementptr i8, i8* %arg1, i64 %tmp5 768 %tmp7 = bitcast i8* %tmp6 to <8 x i16>* 769 %tmp8 = load <8 x i16>, <8 x i16>* %tmp7, align 2 770 %tmp9 = shl i64 %tmp4, 1 771 %tmp10 = getelementptr i8, i8* %arg1, i64 %tmp9 772 %tmp11 = bitcast i8* %tmp10 to <8 x i16>* 773 %tmp12 = load <8 x i16>, <8 x i16>* %tmp11, align 2 774 %tmp13 = getelementptr i16, i16* %arg, i64 %tmp 775 %tmp14 = bitcast i16* %tmp13 to <8 x i16>* 776 store <8 x i16> %tmp8, <8 x i16>* %tmp14, align 2 777 %tmp15 = getelementptr i16, i16* %arg, i64 %tmp4 778 %tmp16 = bitcast i16* %tmp15 to <8 x i16>* 779 store <8 x i16> %tmp12, <8 x i16>* %tmp16, align 2 780 %tmp17 = add nuw nsw i64 %tmp, 16 781 %tmp18 = icmp eq i64 %tmp17, %arg2 782 br i1 %tmp18, label %bb19, label %bb3 783 784 bb19: ; preds = %bb3 785 ret void 786 } 787 788 attributes #0 = { nounwind uwtable } 789 attributes #1 = { nounwind } 790 791
