Sanjay Patel | 0ab0c1a | 2017-12-14 22:05:20 +0000 | [diff] [blame^] | 1 | ; RUN: opt < %s -simplifycfg -sink-common-insts -S | FileCheck -enable-var-scope %s |
Manman Ren | 93ab649 | 2012-09-20 22:37:36 +0000 | [diff] [blame] | 2 | |
| 3 | define zeroext i1 @test1(i1 zeroext %flag, i32 %blksA, i32 %blksB, i32 %nblks) { |
| 4 | entry: |
| 5 | br i1 %flag, label %if.then, label %if.else |
| 6 | |
Michael Liao | 5313da3 | 2014-12-23 08:26:55 +0000 | [diff] [blame] | 7 | ; CHECK-LABEL: test1 |
Manman Ren | 93ab649 | 2012-09-20 22:37:36 +0000 | [diff] [blame] | 8 | ; CHECK: add |
| 9 | ; CHECK: select |
| 10 | ; CHECK: icmp |
| 11 | ; CHECK-NOT: br |
| 12 | if.then: |
| 13 | %cmp = icmp uge i32 %blksA, %nblks |
| 14 | %frombool1 = zext i1 %cmp to i8 |
| 15 | br label %if.end |
| 16 | |
| 17 | if.else: |
| 18 | %add = add i32 %nblks, %blksB |
| 19 | %cmp2 = icmp ule i32 %add, %blksA |
| 20 | %frombool3 = zext i1 %cmp2 to i8 |
| 21 | br label %if.end |
| 22 | |
| 23 | if.end: |
| 24 | %obeys.0 = phi i8 [ %frombool1, %if.then ], [ %frombool3, %if.else ] |
| 25 | %tobool4 = icmp ne i8 %obeys.0, 0 |
| 26 | ret i1 %tobool4 |
| 27 | } |
| 28 | |
| 29 | define zeroext i1 @test2(i1 zeroext %flag, i32 %blksA, i32 %blksB, i32 %nblks) { |
| 30 | entry: |
| 31 | br i1 %flag, label %if.then, label %if.else |
| 32 | |
Michael Liao | 5313da3 | 2014-12-23 08:26:55 +0000 | [diff] [blame] | 33 | ; CHECK-LABEL: test2 |
Manman Ren | 93ab649 | 2012-09-20 22:37:36 +0000 | [diff] [blame] | 34 | ; CHECK: add |
| 35 | ; CHECK: select |
| 36 | ; CHECK: icmp |
| 37 | ; CHECK-NOT: br |
| 38 | if.then: |
| 39 | %cmp = icmp uge i32 %blksA, %nblks |
| 40 | %frombool1 = zext i1 %cmp to i8 |
| 41 | br label %if.end |
| 42 | |
| 43 | if.else: |
| 44 | %add = add i32 %nblks, %blksB |
| 45 | %cmp2 = icmp uge i32 %blksA, %add |
| 46 | %frombool3 = zext i1 %cmp2 to i8 |
| 47 | br label %if.end |
| 48 | |
| 49 | if.end: |
| 50 | %obeys.0 = phi i8 [ %frombool1, %if.then ], [ %frombool3, %if.else ] |
| 51 | %tobool4 = icmp ne i8 %obeys.0, 0 |
| 52 | ret i1 %tobool4 |
| 53 | } |
Michael Liao | 5313da3 | 2014-12-23 08:26:55 +0000 | [diff] [blame] | 54 | |
| 55 | declare i32 @foo(i32, i32) nounwind readnone |
| 56 | |
| 57 | define i32 @test3(i1 zeroext %flag, i32 %x, i32 %y) { |
| 58 | entry: |
| 59 | br i1 %flag, label %if.then, label %if.else |
| 60 | |
| 61 | if.then: |
| 62 | %x0 = call i32 @foo(i32 %x, i32 0) nounwind readnone |
| 63 | %y0 = call i32 @foo(i32 %x, i32 1) nounwind readnone |
| 64 | br label %if.end |
| 65 | |
| 66 | if.else: |
| 67 | %x1 = call i32 @foo(i32 %y, i32 0) nounwind readnone |
| 68 | %y1 = call i32 @foo(i32 %y, i32 1) nounwind readnone |
| 69 | br label %if.end |
| 70 | |
| 71 | if.end: |
| 72 | %xx = phi i32 [ %x0, %if.then ], [ %x1, %if.else ] |
| 73 | %yy = phi i32 [ %y0, %if.then ], [ %y1, %if.else ] |
| 74 | %ret = add i32 %xx, %yy |
| 75 | ret i32 %ret |
| 76 | } |
| 77 | |
| 78 | ; CHECK-LABEL: test3 |
| 79 | ; CHECK: select |
| 80 | ; CHECK: call |
| 81 | ; CHECK: call |
| 82 | ; CHECK: add |
| 83 | ; CHECK-NOT: br |
James Molloy | 5bf2114 | 2016-08-22 19:07:15 +0000 | [diff] [blame] | 84 | |
| 85 | define i32 @test4(i1 zeroext %flag, i32 %x, i32* %y) { |
| 86 | entry: |
| 87 | br i1 %flag, label %if.then, label %if.else |
| 88 | |
| 89 | if.then: |
| 90 | %a = add i32 %x, 5 |
| 91 | store i32 %a, i32* %y |
| 92 | br label %if.end |
| 93 | |
| 94 | if.else: |
| 95 | %b = add i32 %x, 7 |
| 96 | store i32 %b, i32* %y |
| 97 | br label %if.end |
| 98 | |
| 99 | if.end: |
| 100 | ret i32 1 |
| 101 | } |
| 102 | |
| 103 | ; CHECK-LABEL: test4 |
| 104 | ; CHECK: select |
| 105 | ; CHECK: store |
| 106 | ; CHECK-NOT: store |
| 107 | |
| 108 | define i32 @test5(i1 zeroext %flag, i32 %x, i32* %y) { |
| 109 | entry: |
| 110 | br i1 %flag, label %if.then, label %if.else |
| 111 | |
| 112 | if.then: |
| 113 | %a = add i32 %x, 5 |
| 114 | store volatile i32 %a, i32* %y |
| 115 | br label %if.end |
| 116 | |
| 117 | if.else: |
| 118 | %b = add i32 %x, 7 |
| 119 | store i32 %b, i32* %y |
| 120 | br label %if.end |
| 121 | |
| 122 | if.end: |
| 123 | ret i32 1 |
| 124 | } |
| 125 | |
| 126 | ; CHECK-LABEL: test5 |
| 127 | ; CHECK: store volatile |
| 128 | ; CHECK: store |
| 129 | |
| 130 | define i32 @test6(i1 zeroext %flag, i32 %x, i32* %y) { |
| 131 | entry: |
| 132 | br i1 %flag, label %if.then, label %if.else |
| 133 | |
| 134 | if.then: |
| 135 | %a = add i32 %x, 5 |
| 136 | store volatile i32 %a, i32* %y |
| 137 | br label %if.end |
| 138 | |
| 139 | if.else: |
| 140 | %b = add i32 %x, 7 |
| 141 | store volatile i32 %b, i32* %y |
| 142 | br label %if.end |
| 143 | |
| 144 | if.end: |
| 145 | ret i32 1 |
| 146 | } |
| 147 | |
| 148 | ; CHECK-LABEL: test6 |
| 149 | ; CHECK: select |
| 150 | ; CHECK: store volatile |
| 151 | ; CHECK-NOT: store |
| 152 | |
| 153 | define i32 @test7(i1 zeroext %flag, i32 %x, i32* %y) { |
| 154 | entry: |
| 155 | br i1 %flag, label %if.then, label %if.else |
| 156 | |
| 157 | if.then: |
| 158 | %z = load volatile i32, i32* %y |
| 159 | %a = add i32 %z, 5 |
| 160 | store volatile i32 %a, i32* %y |
| 161 | br label %if.end |
| 162 | |
| 163 | if.else: |
| 164 | %w = load volatile i32, i32* %y |
| 165 | %b = add i32 %w, 7 |
| 166 | store volatile i32 %b, i32* %y |
| 167 | br label %if.end |
| 168 | |
| 169 | if.end: |
| 170 | ret i32 1 |
| 171 | } |
| 172 | |
| 173 | ; CHECK-LABEL: test7 |
| 174 | ; CHECK-DAG: select |
| 175 | ; CHECK-DAG: load volatile |
| 176 | ; CHECK: store volatile |
| 177 | ; CHECK-NOT: load |
| 178 | ; CHECK-NOT: store |
| 179 | |
| 180 | ; %z and %w are in different blocks. We shouldn't sink the add because |
| 181 | ; there may be intervening memory instructions. |
| 182 | define i32 @test8(i1 zeroext %flag, i32 %x, i32* %y) { |
| 183 | entry: |
| 184 | %z = load volatile i32, i32* %y |
| 185 | br i1 %flag, label %if.then, label %if.else |
| 186 | |
| 187 | if.then: |
| 188 | %a = add i32 %z, 5 |
| 189 | store volatile i32 %a, i32* %y |
| 190 | br label %if.end |
| 191 | |
| 192 | if.else: |
| 193 | %w = load volatile i32, i32* %y |
| 194 | %b = add i32 %w, 7 |
| 195 | store volatile i32 %b, i32* %y |
| 196 | br label %if.end |
| 197 | |
| 198 | if.end: |
| 199 | ret i32 1 |
| 200 | } |
| 201 | |
| 202 | ; CHECK-LABEL: test8 |
| 203 | ; CHECK: add |
| 204 | ; CHECK: add |
| 205 | |
| 206 | ; The extra store in %if.then means %z and %w are not equivalent. |
| 207 | define i32 @test9(i1 zeroext %flag, i32 %x, i32* %y, i32* %p) { |
| 208 | entry: |
| 209 | br i1 %flag, label %if.then, label %if.else |
| 210 | |
| 211 | if.then: |
| 212 | store i32 7, i32* %p |
| 213 | %z = load volatile i32, i32* %y |
| 214 | store i32 6, i32* %p |
| 215 | %a = add i32 %z, 5 |
| 216 | store volatile i32 %a, i32* %y |
| 217 | br label %if.end |
| 218 | |
| 219 | if.else: |
| 220 | %w = load volatile i32, i32* %y |
| 221 | %b = add i32 %w, 7 |
| 222 | store volatile i32 %b, i32* %y |
| 223 | br label %if.end |
| 224 | |
| 225 | if.end: |
| 226 | ret i32 1 |
| 227 | } |
| 228 | |
| 229 | ; CHECK-LABEL: test9 |
| 230 | ; CHECK: add |
| 231 | ; CHECK: add |
| 232 | |
| 233 | %struct.anon = type { i32, i32 } |
| 234 | |
| 235 | ; The GEP indexes a struct type so cannot have a variable last index. |
| 236 | define i32 @test10(i1 zeroext %flag, i32 %x, i32* %y, %struct.anon* %s) { |
| 237 | entry: |
| 238 | br i1 %flag, label %if.then, label %if.else |
| 239 | |
| 240 | if.then: |
| 241 | %dummy = add i32 %x, 5 |
| 242 | %gepa = getelementptr inbounds %struct.anon, %struct.anon* %s, i32 0, i32 0 |
| 243 | store volatile i32 %x, i32* %gepa |
| 244 | br label %if.end |
| 245 | |
| 246 | if.else: |
| 247 | %dummy1 = add i32 %x, 6 |
| 248 | %gepb = getelementptr inbounds %struct.anon, %struct.anon* %s, i32 0, i32 1 |
| 249 | store volatile i32 %x, i32* %gepb |
| 250 | br label %if.end |
| 251 | |
| 252 | if.end: |
| 253 | ret i32 1 |
| 254 | } |
| 255 | |
| 256 | ; CHECK-LABEL: test10 |
| 257 | ; CHECK: getelementptr |
| 258 | ; CHECK: getelementptr |
| 259 | ; CHECK: phi |
| 260 | ; CHECK: store volatile |
| 261 | |
| 262 | ; The shufflevector's mask operand cannot be merged in a PHI. |
| 263 | define i32 @test11(i1 zeroext %flag, i32 %w, <2 x i32> %x, <2 x i32> %y) { |
| 264 | entry: |
| 265 | br i1 %flag, label %if.then, label %if.else |
| 266 | |
| 267 | if.then: |
| 268 | %dummy = add i32 %w, 5 |
| 269 | %sv1 = shufflevector <2 x i32> %x, <2 x i32> %y, <2 x i32> <i32 0, i32 1> |
| 270 | br label %if.end |
| 271 | |
| 272 | if.else: |
| 273 | %dummy1 = add i32 %w, 6 |
| 274 | %sv2 = shufflevector <2 x i32> %x, <2 x i32> %y, <2 x i32> <i32 1, i32 0> |
| 275 | br label %if.end |
| 276 | |
| 277 | if.end: |
| 278 | %p = phi <2 x i32> [ %sv1, %if.then ], [ %sv2, %if.else ] |
| 279 | ret i32 1 |
| 280 | } |
| 281 | |
| 282 | ; CHECK-LABEL: test11 |
| 283 | ; CHECK: shufflevector |
| 284 | ; CHECK: shufflevector |
| 285 | |
| 286 | ; We can't common an intrinsic! |
| 287 | define i32 @test12(i1 zeroext %flag, i32 %w, i32 %x, i32 %y) { |
| 288 | entry: |
| 289 | br i1 %flag, label %if.then, label %if.else |
| 290 | |
| 291 | if.then: |
| 292 | %dummy = add i32 %w, 5 |
| 293 | %sv1 = call i32 @llvm.ctlz.i32(i32 %x) |
| 294 | br label %if.end |
| 295 | |
| 296 | if.else: |
| 297 | %dummy1 = add i32 %w, 6 |
| 298 | %sv2 = call i32 @llvm.cttz.i32(i32 %x) |
| 299 | br label %if.end |
| 300 | |
| 301 | if.end: |
| 302 | %p = phi i32 [ %sv1, %if.then ], [ %sv2, %if.else ] |
| 303 | ret i32 1 |
| 304 | } |
| 305 | |
| 306 | declare i32 @llvm.ctlz.i32(i32 %x) readnone |
| 307 | declare i32 @llvm.cttz.i32(i32 %x) readnone |
| 308 | |
| 309 | ; CHECK-LABEL: test12 |
| 310 | ; CHECK: call i32 @llvm.ctlz |
| 311 | ; CHECK: call i32 @llvm.cttz |
| 312 | |
James Molloy | d13b123 | 2016-08-30 10:56:08 +0000 | [diff] [blame] | 313 | ; The TBAA metadata should be properly combined. |
| 314 | define i32 @test13(i1 zeroext %flag, i32 %x, i32* %y) { |
| 315 | entry: |
| 316 | br i1 %flag, label %if.then, label %if.else |
| 317 | |
| 318 | if.then: |
| 319 | %z = load volatile i32, i32* %y |
| 320 | %a = add i32 %z, 5 |
| 321 | store volatile i32 %a, i32* %y, !tbaa !3 |
| 322 | br label %if.end |
| 323 | |
| 324 | if.else: |
| 325 | %w = load volatile i32, i32* %y |
| 326 | %b = add i32 %w, 7 |
| 327 | store volatile i32 %b, i32* %y, !tbaa !4 |
| 328 | br label %if.end |
| 329 | |
| 330 | if.end: |
| 331 | ret i32 1 |
| 332 | } |
| 333 | |
| 334 | !0 = !{ !"an example type tree" } |
| 335 | !1 = !{ !"int", !0 } |
| 336 | !2 = !{ !"float", !0 } |
| 337 | !3 = !{ !"const float", !2, i64 0 } |
| 338 | !4 = !{ !"special float", !2, i64 1 } |
| 339 | |
| 340 | ; CHECK-LABEL: test13 |
| 341 | ; CHECK-DAG: select |
| 342 | ; CHECK-DAG: load volatile |
Matt Arsenault | 90e4f71 | 2017-11-13 01:47:52 +0000 | [diff] [blame] | 343 | ; CHECK: store volatile {{.*}}, !tbaa ![[$TBAA:[0-9]]] |
James Molloy | d13b123 | 2016-08-30 10:56:08 +0000 | [diff] [blame] | 344 | ; CHECK-NOT: load |
| 345 | ; CHECK-NOT: store |
| 346 | |
James Molloy | 923e98c | 2016-08-31 10:46:16 +0000 | [diff] [blame] | 347 | ; The call should be commoned. |
| 348 | define i32 @test13a(i1 zeroext %flag, i32 %w, i32 %x, i32 %y) { |
| 349 | entry: |
| 350 | br i1 %flag, label %if.then, label %if.else |
| 351 | |
| 352 | if.then: |
| 353 | %sv1 = call i32 @bar(i32 %x) |
| 354 | br label %if.end |
| 355 | |
| 356 | if.else: |
| 357 | %sv2 = call i32 @bar(i32 %y) |
| 358 | br label %if.end |
| 359 | |
| 360 | if.end: |
| 361 | %p = phi i32 [ %sv1, %if.then ], [ %sv2, %if.else ] |
| 362 | ret i32 1 |
| 363 | } |
| 364 | declare i32 @bar(i32) |
| 365 | |
| 366 | ; CHECK-LABEL: test13a |
| 367 | ; CHECK: %[[x:.*]] = select i1 %flag |
| 368 | ; CHECK: call i32 @bar(i32 %[[x]]) |
| 369 | |
James Molloy | eec6df3 | 2016-09-01 10:44:35 +0000 | [diff] [blame] | 370 | ; The load should be commoned. |
| 371 | define i32 @test14(i1 zeroext %flag, i32 %w, i32 %x, i32 %y, %struct.anon* %s) { |
| 372 | entry: |
| 373 | br i1 %flag, label %if.then, label %if.else |
| 374 | |
| 375 | if.then: |
| 376 | %dummy = add i32 %x, 1 |
| 377 | %gepa = getelementptr inbounds %struct.anon, %struct.anon* %s, i32 0, i32 1 |
| 378 | %sv1 = load i32, i32* %gepa |
| 379 | %cmp1 = icmp eq i32 %sv1, 56 |
| 380 | br label %if.end |
| 381 | |
| 382 | if.else: |
| 383 | %dummy2 = add i32 %x, 4 |
| 384 | %gepb = getelementptr inbounds %struct.anon, %struct.anon* %s, i32 0, i32 1 |
| 385 | %sv2 = load i32, i32* %gepb |
| 386 | %cmp2 = icmp eq i32 %sv2, 57 |
Adrian Prantl | abe0475 | 2017-07-28 20:21:02 +0000 | [diff] [blame] | 387 | call void @llvm.dbg.value(metadata i32 0, metadata !9, metadata !DIExpression()), !dbg !11 |
James Molloy | eec6df3 | 2016-09-01 10:44:35 +0000 | [diff] [blame] | 388 | br label %if.end |
| 389 | |
| 390 | if.end: |
| 391 | %p = phi i1 [ %cmp1, %if.then ], [ %cmp2, %if.else ] |
| 392 | ret i32 1 |
| 393 | } |
| 394 | |
Adrian Prantl | abe0475 | 2017-07-28 20:21:02 +0000 | [diff] [blame] | 395 | declare void @llvm.dbg.value(metadata, metadata, metadata) |
Dehao Chen | 018a3af | 2016-10-17 19:28:44 +0000 | [diff] [blame] | 396 | !llvm.module.flags = !{!5, !6} |
| 397 | !llvm.dbg.cu = !{!7} |
| 398 | |
| 399 | !5 = !{i32 2, !"Dwarf Version", i32 4} |
| 400 | !6 = !{i32 2, !"Debug Info Version", i32 3} |
| 401 | !7 = distinct !DICompileUnit(language: DW_LANG_C99, file: !10) |
| 402 | !8 = distinct !DISubprogram(name: "foo", unit: !7) |
| 403 | !9 = !DILocalVariable(name: "b", line: 1, arg: 2, scope: !8) |
| 404 | !10 = !DIFile(filename: "a.c", directory: "a/b") |
| 405 | !11 = !DILocation(line: 1, column: 14, scope: !8) |
| 406 | |
James Molloy | eec6df3 | 2016-09-01 10:44:35 +0000 | [diff] [blame] | 407 | ; CHECK-LABEL: test14 |
| 408 | ; CHECK: getelementptr |
| 409 | ; CHECK: load |
| 410 | ; CHECK-NOT: load |
| 411 | |
| 412 | ; The load should be commoned. |
| 413 | define i32 @test15(i1 zeroext %flag, i32 %w, i32 %x, i32 %y, %struct.anon* %s) { |
| 414 | entry: |
| 415 | br i1 %flag, label %if.then, label %if.else |
| 416 | |
| 417 | if.then: |
| 418 | %dummy = add i32 %x, 1 |
| 419 | %gepa = getelementptr inbounds %struct.anon, %struct.anon* %s, i32 0, i32 0 |
| 420 | %sv1 = load i32, i32* %gepa |
| 421 | %ext1 = zext i32 %sv1 to i64 |
| 422 | %cmp1 = icmp eq i64 %ext1, 56 |
| 423 | br label %if.end |
| 424 | |
| 425 | if.else: |
| 426 | %dummy2 = add i32 %x, 4 |
| 427 | %gepb = getelementptr inbounds %struct.anon, %struct.anon* %s, i32 0, i32 1 |
| 428 | %sv2 = load i32, i32* %gepb |
| 429 | %ext2 = zext i32 %sv2 to i64 |
| 430 | %cmp2 = icmp eq i64 %ext2, 57 |
| 431 | br label %if.end |
| 432 | |
| 433 | if.end: |
| 434 | %p = phi i1 [ %cmp1, %if.then ], [ %cmp2, %if.else ] |
| 435 | ret i32 1 |
| 436 | } |
| 437 | |
| 438 | ; CHECK-LABEL: test15 |
| 439 | ; CHECK: getelementptr |
| 440 | ; CHECK: load |
| 441 | ; CHECK-NOT: load |
| 442 | |
| 443 | define zeroext i1 @test_crash(i1 zeroext %flag, i32* %i4, i32* %m, i32* %n) { |
| 444 | entry: |
| 445 | br i1 %flag, label %if.then, label %if.else |
| 446 | |
| 447 | if.then: |
| 448 | %tmp1 = load i32, i32* %i4 |
| 449 | %tmp2 = add i32 %tmp1, -1 |
| 450 | store i32 %tmp2, i32* %i4 |
| 451 | br label %if.end |
| 452 | |
| 453 | if.else: |
| 454 | %tmp3 = load i32, i32* %m |
| 455 | %tmp4 = load i32, i32* %n |
| 456 | %tmp5 = add i32 %tmp3, %tmp4 |
| 457 | store i32 %tmp5, i32* %i4 |
| 458 | br label %if.end |
| 459 | |
| 460 | if.end: |
| 461 | ret i1 true |
| 462 | } |
| 463 | |
| 464 | ; CHECK-LABEL: test_crash |
| 465 | ; No checks for test_crash - just ensure it doesn't crash! |
| 466 | |
James Molloy | 88cad7e | 2016-09-01 12:58:13 +0000 | [diff] [blame] | 467 | define zeroext i1 @test16(i1 zeroext %flag, i1 zeroext %flag2, i32 %blksA, i32 %blksB, i32 %nblks) { |
| 468 | |
| 469 | entry: |
| 470 | br i1 %flag, label %if.then, label %if.else |
| 471 | |
| 472 | if.then: |
| 473 | %cmp = icmp uge i32 %blksA, %nblks |
| 474 | %frombool1 = zext i1 %cmp to i8 |
| 475 | br label %if.end |
| 476 | |
| 477 | if.else: |
| 478 | br i1 %flag2, label %if.then2, label %if.end |
| 479 | |
| 480 | if.then2: |
| 481 | %add = add i32 %nblks, %blksB |
| 482 | %cmp2 = icmp ule i32 %add, %blksA |
| 483 | %frombool3 = zext i1 %cmp2 to i8 |
| 484 | br label %if.end |
| 485 | |
| 486 | if.end: |
| 487 | %obeys.0 = phi i8 [ %frombool1, %if.then ], [ %frombool3, %if.then2 ], [ 0, %if.else ] |
| 488 | %tobool4 = icmp ne i8 %obeys.0, 0 |
| 489 | ret i1 %tobool4 |
| 490 | } |
| 491 | |
| 492 | ; CHECK-LABEL: test16 |
| 493 | ; CHECK: zext |
James Molloy | 18d96e8 | 2016-09-11 08:07:30 +0000 | [diff] [blame] | 494 | ; CHECK: zext |
| 495 | |
| 496 | define zeroext i1 @test16a(i1 zeroext %flag, i1 zeroext %flag2, i32 %blksA, i32 %blksB, i32 %nblks, i8* %p) { |
| 497 | |
| 498 | entry: |
| 499 | br i1 %flag, label %if.then, label %if.else |
| 500 | |
| 501 | if.then: |
| 502 | %cmp = icmp uge i32 %blksA, %nblks |
| 503 | %frombool1 = zext i1 %cmp to i8 |
| 504 | store i8 %frombool1, i8* %p |
| 505 | br label %if.end |
| 506 | |
| 507 | if.else: |
| 508 | br i1 %flag2, label %if.then2, label %if.end |
| 509 | |
| 510 | if.then2: |
| 511 | %add = add i32 %nblks, %blksB |
| 512 | %cmp2 = icmp ule i32 %add, %blksA |
| 513 | %frombool3 = zext i1 %cmp2 to i8 |
| 514 | store i8 %frombool3, i8* %p |
| 515 | br label %if.end |
| 516 | |
| 517 | if.end: |
| 518 | ret i1 true |
| 519 | } |
| 520 | |
| 521 | ; CHECK-LABEL: test16a |
| 522 | ; CHECK: zext |
James Molloy | 88cad7e | 2016-09-01 12:58:13 +0000 | [diff] [blame] | 523 | ; CHECK-NOT: zext |
| 524 | |
| 525 | define zeroext i1 @test17(i32 %flag, i32 %blksA, i32 %blksB, i32 %nblks) { |
| 526 | entry: |
| 527 | switch i32 %flag, label %if.end [ |
| 528 | i32 0, label %if.then |
| 529 | i32 1, label %if.then2 |
| 530 | ] |
| 531 | |
| 532 | if.then: |
| 533 | %cmp = icmp uge i32 %blksA, %nblks |
James Molloy | 18d96e8 | 2016-09-11 08:07:30 +0000 | [diff] [blame] | 534 | %frombool1 = call i8 @i1toi8(i1 %cmp) |
James Molloy | 88cad7e | 2016-09-01 12:58:13 +0000 | [diff] [blame] | 535 | br label %if.end |
| 536 | |
| 537 | if.then2: |
| 538 | %add = add i32 %nblks, %blksB |
| 539 | %cmp2 = icmp ule i32 %add, %blksA |
James Molloy | 18d96e8 | 2016-09-11 08:07:30 +0000 | [diff] [blame] | 540 | %frombool3 = call i8 @i1toi8(i1 %cmp2) |
James Molloy | 88cad7e | 2016-09-01 12:58:13 +0000 | [diff] [blame] | 541 | br label %if.end |
| 542 | |
| 543 | if.end: |
| 544 | %obeys.0 = phi i8 [ %frombool1, %if.then ], [ %frombool3, %if.then2 ], [ 0, %entry ] |
| 545 | %tobool4 = icmp ne i8 %obeys.0, 0 |
| 546 | ret i1 %tobool4 |
| 547 | } |
James Molloy | 18d96e8 | 2016-09-11 08:07:30 +0000 | [diff] [blame] | 548 | declare i8 @i1toi8(i1) |
James Molloy | 88cad7e | 2016-09-01 12:58:13 +0000 | [diff] [blame] | 549 | |
| 550 | ; CHECK-LABEL: test17 |
| 551 | ; CHECK: if.then: |
| 552 | ; CHECK-NEXT: icmp uge |
| 553 | ; CHECK-NEXT: br label %[[x:.*]] |
| 554 | |
| 555 | ; CHECK: if.then2: |
| 556 | ; CHECK-NEXT: add |
| 557 | ; CHECK-NEXT: icmp ule |
| 558 | ; CHECK-NEXT: br label %[[x]] |
| 559 | |
| 560 | ; CHECK: [[x]]: |
| 561 | ; CHECK-NEXT: %[[y:.*]] = phi i1 [ %cmp |
James Molloy | 18d96e8 | 2016-09-11 08:07:30 +0000 | [diff] [blame] | 562 | ; CHECK-NEXT: %[[z:.*]] = call i8 @i1toi8(i1 %[[y]]) |
James Molloy | 88cad7e | 2016-09-01 12:58:13 +0000 | [diff] [blame] | 563 | ; CHECK-NEXT: br label %if.end |
| 564 | |
| 565 | ; CHECK: if.end: |
| 566 | ; CHECK-NEXT: phi i8 |
| 567 | ; CHECK-DAG: [ %[[z]], %[[x]] ] |
| 568 | ; CHECK-DAG: [ 0, %entry ] |
| 569 | |
| 570 | define zeroext i1 @test18(i32 %flag, i32 %blksA, i32 %blksB, i32 %nblks) { |
| 571 | entry: |
| 572 | switch i32 %flag, label %if.then3 [ |
| 573 | i32 0, label %if.then |
| 574 | i32 1, label %if.then2 |
| 575 | ] |
| 576 | |
| 577 | if.then: |
| 578 | %cmp = icmp uge i32 %blksA, %nblks |
| 579 | %frombool1 = zext i1 %cmp to i8 |
| 580 | br label %if.end |
| 581 | |
| 582 | if.then2: |
| 583 | %add = add i32 %nblks, %blksB |
| 584 | %cmp2 = icmp ule i32 %add, %blksA |
| 585 | %frombool3 = zext i1 %cmp2 to i8 |
| 586 | br label %if.end |
| 587 | |
| 588 | if.then3: |
| 589 | %add2 = add i32 %nblks, %blksA |
| 590 | %cmp3 = icmp ule i32 %add2, %blksA |
| 591 | %frombool4 = zext i1 %cmp3 to i8 |
| 592 | br label %if.end |
| 593 | |
| 594 | if.end: |
| 595 | %obeys.0 = phi i8 [ %frombool1, %if.then ], [ %frombool3, %if.then2 ], [ %frombool4, %if.then3 ] |
| 596 | %tobool4 = icmp ne i8 %obeys.0, 0 |
| 597 | ret i1 %tobool4 |
| 598 | } |
| 599 | |
| 600 | ; CHECK-LABEL: test18 |
| 601 | ; CHECK: if.end: |
| 602 | ; CHECK-NEXT: %[[x:.*]] = phi i1 |
| 603 | ; CHECK-DAG: [ %cmp, %if.then ] |
| 604 | ; CHECK-DAG: [ %cmp2, %if.then2 ] |
| 605 | ; CHECK-DAG: [ %cmp3, %if.then3 ] |
| 606 | ; CHECK-NEXT: zext i1 %[[x]] to i8 |
| 607 | |
James Molloy | f3cf2a4 | 2016-09-02 07:29:00 +0000 | [diff] [blame] | 608 | define i32 @test_pr30188(i1 zeroext %flag, i32 %x) { |
| 609 | entry: |
| 610 | %y = alloca i32 |
| 611 | %z = alloca i32 |
| 612 | br i1 %flag, label %if.then, label %if.else |
| 613 | |
| 614 | if.then: |
| 615 | store i32 %x, i32* %y |
| 616 | br label %if.end |
| 617 | |
| 618 | if.else: |
| 619 | store i32 %x, i32* %z |
| 620 | br label %if.end |
| 621 | |
| 622 | if.end: |
| 623 | ret i32 1 |
| 624 | } |
| 625 | |
| 626 | ; CHECK-LABEL: test_pr30188 |
| 627 | ; CHECK-NOT: select |
| 628 | ; CHECK: store |
| 629 | ; CHECK: store |
| 630 | |
James Molloy | ec905a6 | 2016-09-07 08:40:20 +0000 | [diff] [blame] | 631 | define i32 @test_pr30188a(i1 zeroext %flag, i32 %x) { |
| 632 | entry: |
| 633 | %y = alloca i32 |
| 634 | %z = alloca i32 |
| 635 | br i1 %flag, label %if.then, label %if.else |
| 636 | |
| 637 | if.then: |
| 638 | call void @g() |
| 639 | %one = load i32, i32* %y |
| 640 | %two = add i32 %one, 2 |
| 641 | store i32 %two, i32* %y |
| 642 | br label %if.end |
| 643 | |
| 644 | if.else: |
| 645 | %three = load i32, i32* %z |
| 646 | %four = add i32 %three, 2 |
| 647 | store i32 %four, i32* %y |
| 648 | br label %if.end |
| 649 | |
| 650 | if.end: |
| 651 | ret i32 1 |
| 652 | } |
| 653 | |
| 654 | ; CHECK-LABEL: test_pr30188a |
| 655 | ; CHECK-NOT: select |
| 656 | ; CHECK: load |
| 657 | ; CHECK: load |
| 658 | ; CHECK: store |
| 659 | |
James Molloy | bf1837d | 2016-09-07 08:15:54 +0000 | [diff] [blame] | 660 | ; The phi is confusing - both add instructions are used by it, but |
| 661 | ; not on their respective unconditional arcs. It should not be |
| 662 | ; optimized. |
| 663 | define void @test_pr30292(i1 %cond, i1 %cond2, i32 %a, i32 %b) { |
| 664 | entry: |
| 665 | %add1 = add i32 %a, 1 |
| 666 | br label %succ |
| 667 | |
| 668 | one: |
| 669 | br i1 %cond, label %two, label %succ |
| 670 | |
| 671 | two: |
| 672 | call void @g() |
| 673 | %add2 = add i32 %a, 1 |
| 674 | br label %succ |
| 675 | |
| 676 | succ: |
| 677 | %p = phi i32 [ 0, %entry ], [ %add1, %one ], [ %add2, %two ] |
| 678 | br label %one |
| 679 | } |
| 680 | declare void @g() |
| 681 | |
| 682 | ; CHECK-LABEL: test_pr30292 |
| 683 | ; CHECK: phi i32 [ 0, %entry ], [ %add1, %succ ], [ %add2, %two ] |
| 684 | |
James Molloy | 104370a | 2016-09-11 09:00:03 +0000 | [diff] [blame] | 685 | define zeroext i1 @test_pr30244(i1 zeroext %flag, i1 zeroext %flag2, i32 %blksA, i32 %blksB, i32 %nblks) { |
| 686 | |
James Molloy | 18d96e8 | 2016-09-11 08:07:30 +0000 | [diff] [blame] | 687 | entry: |
James Molloy | 104370a | 2016-09-11 09:00:03 +0000 | [diff] [blame] | 688 | %p = alloca i8 |
| 689 | br i1 %flag, label %if.then, label %if.else |
James Molloy | 18d96e8 | 2016-09-11 08:07:30 +0000 | [diff] [blame] | 690 | |
James Molloy | 104370a | 2016-09-11 09:00:03 +0000 | [diff] [blame] | 691 | if.then: |
| 692 | %cmp = icmp uge i32 %blksA, %nblks |
| 693 | %frombool1 = zext i1 %cmp to i8 |
| 694 | store i8 %frombool1, i8* %p |
| 695 | br label %if.end |
James Molloy | 18d96e8 | 2016-09-11 08:07:30 +0000 | [diff] [blame] | 696 | |
James Molloy | 104370a | 2016-09-11 09:00:03 +0000 | [diff] [blame] | 697 | if.else: |
| 698 | br i1 %flag2, label %if.then2, label %if.end |
James Molloy | 18d96e8 | 2016-09-11 08:07:30 +0000 | [diff] [blame] | 699 | |
James Molloy | 104370a | 2016-09-11 09:00:03 +0000 | [diff] [blame] | 700 | if.then2: |
| 701 | %add = add i32 %nblks, %blksB |
| 702 | %cmp2 = icmp ule i32 %add, %blksA |
| 703 | %frombool3 = zext i1 %cmp2 to i8 |
| 704 | store i8 %frombool3, i8* %p |
| 705 | br label %if.end |
| 706 | |
| 707 | if.end: |
| 708 | ret i1 true |
James Molloy | 18d96e8 | 2016-09-11 08:07:30 +0000 | [diff] [blame] | 709 | } |
| 710 | |
James Molloy | 104370a | 2016-09-11 09:00:03 +0000 | [diff] [blame] | 711 | ; CHECK-LABEL: @test_pr30244 |
| 712 | ; CHECK: store |
| 713 | ; CHECK: store |
James Molloy | 18d96e8 | 2016-09-11 08:07:30 +0000 | [diff] [blame] | 714 | |
James Molloy | 0efb96a | 2016-09-19 08:23:08 +0000 | [diff] [blame] | 715 | define i32 @test_pr30373a(i1 zeroext %flag, i32 %x, i32 %y) { |
| 716 | entry: |
| 717 | br i1 %flag, label %if.then, label %if.else |
| 718 | |
| 719 | if.then: |
| 720 | %x0 = call i32 @foo(i32 %x, i32 0) nounwind readnone |
| 721 | %y0 = call i32 @foo(i32 %x, i32 1) nounwind readnone |
| 722 | %z0 = lshr i32 %y0, 8 |
| 723 | br label %if.end |
| 724 | |
| 725 | if.else: |
| 726 | %x1 = call i32 @foo(i32 %y, i32 0) nounwind readnone |
| 727 | %y1 = call i32 @foo(i32 %y, i32 1) nounwind readnone |
| 728 | %z1 = lshr exact i32 %y1, 8 |
| 729 | br label %if.end |
| 730 | |
| 731 | if.end: |
| 732 | %xx = phi i32 [ %x0, %if.then ], [ %x1, %if.else ] |
| 733 | %yy = phi i32 [ %z0, %if.then ], [ %z1, %if.else ] |
| 734 | %ret = add i32 %xx, %yy |
| 735 | ret i32 %ret |
| 736 | } |
| 737 | |
| 738 | ; CHECK-LABEL: test_pr30373a |
| 739 | ; CHECK: lshr |
| 740 | ; CHECK-NOT: exact |
| 741 | ; CHECK: } |
| 742 | |
| 743 | define i32 @test_pr30373b(i1 zeroext %flag, i32 %x, i32 %y) { |
| 744 | entry: |
| 745 | br i1 %flag, label %if.then, label %if.else |
| 746 | |
| 747 | if.then: |
| 748 | %x0 = call i32 @foo(i32 %x, i32 0) nounwind readnone |
| 749 | %y0 = call i32 @foo(i32 %x, i32 1) nounwind readnone |
| 750 | %z0 = lshr exact i32 %y0, 8 |
| 751 | br label %if.end |
| 752 | |
| 753 | if.else: |
| 754 | %x1 = call i32 @foo(i32 %y, i32 0) nounwind readnone |
| 755 | %y1 = call i32 @foo(i32 %y, i32 1) nounwind readnone |
| 756 | %z1 = lshr i32 %y1, 8 |
| 757 | br label %if.end |
| 758 | |
| 759 | if.end: |
| 760 | %xx = phi i32 [ %x0, %if.then ], [ %x1, %if.else ] |
| 761 | %yy = phi i32 [ %z0, %if.then ], [ %z1, %if.else ] |
| 762 | %ret = add i32 %xx, %yy |
| 763 | ret i32 %ret |
| 764 | } |
| 765 | |
| 766 | ; CHECK-LABEL: test_pr30373b |
| 767 | ; CHECK: lshr |
| 768 | ; CHECK-NOT: exact |
| 769 | ; CHECK: } |
| 770 | |
Akira Hatanaka | 4ec7b20 | 2017-01-25 06:21:51 +0000 | [diff] [blame] | 771 | ; Check that simplifycfg doesn't sink and merge inline-asm instructions. |
| 772 | |
| 773 | define i32 @test_inline_asm1(i32 %c, i32 %r6) { |
| 774 | entry: |
| 775 | %tobool = icmp eq i32 %c, 0 |
| 776 | br i1 %tobool, label %if.else, label %if.then |
| 777 | |
| 778 | if.then: |
| 779 | %0 = call i32 asm "rorl $2, $0", "=&r,0,n,~{dirflag},~{fpsr},~{flags}"(i32 %r6, i32 8) |
| 780 | br label %if.end |
| 781 | |
| 782 | if.else: |
| 783 | %1 = call i32 asm "rorl $2, $0", "=&r,0,n,~{dirflag},~{fpsr},~{flags}"(i32 %r6, i32 6) |
| 784 | br label %if.end |
| 785 | |
| 786 | if.end: |
| 787 | %r6.addr.0 = phi i32 [ %0, %if.then ], [ %1, %if.else ] |
| 788 | ret i32 %r6.addr.0 |
| 789 | } |
| 790 | |
| 791 | ; CHECK-LABEL: @test_inline_asm1( |
| 792 | ; CHECK: call i32 asm "rorl $2, $0", "=&r,0,n,~{dirflag},~{fpsr},~{flags}"(i32 %r6, i32 8) |
| 793 | ; CHECK: call i32 asm "rorl $2, $0", "=&r,0,n,~{dirflag},~{fpsr},~{flags}"(i32 %r6, i32 6) |
| 794 | |
Sanjoy Das | bc357e8 | 2016-10-12 18:15:33 +0000 | [diff] [blame] | 795 | declare i32 @call_target() |
| 796 | |
| 797 | define void @test_operand_bundles(i1 %cond, i32* %ptr) { |
| 798 | entry: |
| 799 | br i1 %cond, label %left, label %right |
| 800 | |
| 801 | left: |
| 802 | %val0 = call i32 @call_target() [ "deopt"(i32 10) ] |
| 803 | store i32 %val0, i32* %ptr |
| 804 | br label %merge |
| 805 | |
| 806 | right: |
| 807 | %val1 = call i32 @call_target() [ "deopt"(i32 20) ] |
| 808 | store i32 %val1, i32* %ptr |
| 809 | br label %merge |
| 810 | |
| 811 | merge: |
| 812 | ret void |
| 813 | } |
| 814 | |
| 815 | ; CHECK-LABEL: @test_operand_bundles( |
| 816 | ; CHECK: left: |
| 817 | ; CHECK-NEXT: %val0 = call i32 @call_target() [ "deopt"(i32 10) ] |
| 818 | ; CHECK: right: |
| 819 | ; CHECK-NEXT: %val1 = call i32 @call_target() [ "deopt"(i32 20) ] |
| 820 | |
Leo Li | 5499b1b | 2017-07-06 18:47:05 +0000 | [diff] [blame] | 821 | %T = type {i32, i32} |
| 822 | |
| 823 | define i32 @test_insertvalue(i1 zeroext %flag, %T %P) { |
| 824 | entry: |
| 825 | br i1 %flag, label %if.then, label %if.else |
| 826 | |
| 827 | if.then: |
| 828 | %t1 = insertvalue %T %P, i32 0, 0 |
| 829 | br label %if.end |
| 830 | |
| 831 | if.else: |
| 832 | %t2 = insertvalue %T %P, i32 1, 0 |
| 833 | br label %if.end |
| 834 | |
| 835 | if.end: |
| 836 | %t = phi %T [%t1, %if.then], [%t2, %if.else] |
| 837 | ret i32 1 |
| 838 | } |
| 839 | |
| 840 | ; CHECK-LABEL: @test_insertvalue |
| 841 | ; CHECK: select |
| 842 | ; CHECK: insertvalue |
| 843 | ; CHECK-NOT: insertvalue |
| 844 | |
Matt Arsenault | 90e4f71 | 2017-11-13 01:47:52 +0000 | [diff] [blame] | 845 | ; CHECK: ![[$TBAA]] = !{![[TYPE:[0-9]]], ![[TYPE]], i64 0} |
Dehao Chen | 018a3af | 2016-10-17 19:28:44 +0000 | [diff] [blame] | 846 | ; CHECK: ![[TYPE]] = !{!"float", ![[TEXT:[0-9]]]} |
| 847 | ; CHECK: ![[TEXT]] = !{!"an example type tree"} |