1; RUN: opt < %s -instcombine -S | FileCheck %s 2 3target datalayout = "e-p:64:64-p1:16:16-p2:32:32:32-p3:64:64:64" 4 5%intstruct = type { i32 } 6%pair = type { i32, i32 } 7%struct.B = type { double } 8%struct.A = type { %struct.B, i32, i32 } 9%struct.C = type { [7 x i8] } 10 11 12@Global = constant [10 x i8] c"helloworld" 13@Global_as1 = addrspace(1) constant [10 x i8] c"helloworld" 14 15; Test noop elimination 16define i32* @test1(i32* %I) { 17 %A = getelementptr i32, i32* %I, i64 0 18 ret i32* %A 19; CHECK-LABEL: @test1( 20; CHECK: ret i32* %I 21} 22 23define i32 addrspace(1)* @test1_as1(i32 addrspace(1)* %I) { 24 %A = getelementptr i32, i32 addrspace(1)* %I, i64 0 25 ret i32 addrspace(1)* %A 26; CHECK-LABEL: @test1_as1( 27; CHECK: ret i32 addrspace(1)* %I 28} 29 30; Test noop elimination 31define i32* @test2(i32* %I) { 32 %A = getelementptr i32, i32* %I 33 ret i32* %A 34; CHECK-LABEL: @test2( 35; CHECK: ret i32* %I 36} 37 38; Test that two array indexing geps fold 39define i32* @test3(i32* %I) { 40 %A = getelementptr i32, i32* %I, i64 17 41 %B = getelementptr i32, i32* %A, i64 4 42 ret i32* %B 43; CHECK-LABEL: @test3( 44; CHECK: getelementptr i32, i32* %I, i64 21 45} 46 47; Test that two getelementptr insts fold 48define i32* @test4({ i32 }* %I) { 49 %A = getelementptr { i32 }, { i32 }* %I, i64 1 50 %B = getelementptr { i32 }, { i32 }* %A, i64 0, i32 0 51 ret i32* %B 52; CHECK-LABEL: @test4( 53; CHECK: getelementptr { i32 }, { i32 }* %I, i64 1, i32 0 54} 55 56define void @test5(i8 %B) { 57 ; This should be turned into a constexpr instead of being an instruction 58 %A = getelementptr [10 x i8], [10 x i8]* @Global, i64 0, i64 4 59 store i8 %B, i8* %A 60 ret void 61; CHECK-LABEL: @test5( 62; CHECK: store i8 %B, i8* getelementptr inbounds ([10 x i8], [10 x i8]* @Global, i64 0, i64 4) 63} 64 65define void @test5_as1(i8 %B) { 66 ; This should be turned into a constexpr instead of being an instruction 67 %A = getelementptr [10 x i8], [10 x i8] addrspace(1)* @Global_as1, i16 0, i16 4 68 store i8 %B, i8 addrspace(1)* %A 69 ret void 70; CHECK-LABEL: @test5_as1( 71; CHECK: store i8 %B, i8 addrspace(1)* getelementptr inbounds ([10 x i8], [10 x i8] addrspace(1)* @Global_as1, i16 0, i16 4) 72} 73 74%as1_ptr_struct = type { i32 addrspace(1)* } 75%as2_ptr_struct = type { i32 addrspace(2)* } 76 77@global_as2 = addrspace(2) global i32 zeroinitializer 78@global_as1_as2_ptr = addrspace(1) global %as2_ptr_struct { i32 addrspace(2)* @global_as2 } 79 80; This should be turned into a constexpr instead of being an instruction 81define void @test_evaluate_gep_nested_as_ptrs(i32 addrspace(2)* %B) { 82; CHECK-LABEL: @test_evaluate_gep_nested_as_ptrs( 83; CHECK-NEXT: store i32 addrspace(2)* %B, i32 addrspace(2)* addrspace(1)* getelementptr inbounds (%as2_ptr_struct, %as2_ptr_struct addrspace(1)* @global_as1_as2_ptr, i16 0, i32 0), align 8 84; CHECK-NEXT: ret void 85 %A = getelementptr %as2_ptr_struct, %as2_ptr_struct addrspace(1)* @global_as1_as2_ptr, i16 0, i32 0 86 store i32 addrspace(2)* %B, i32 addrspace(2)* addrspace(1)* %A 87 ret void 88} 89 90@arst = addrspace(1) global [4 x i8 addrspace(2)*] zeroinitializer 91 92define void @test_evaluate_gep_as_ptrs_array(i8 addrspace(2)* %B) { 93; CHECK-LABEL: @test_evaluate_gep_as_ptrs_array( 94; CHECK-NEXT: store i8 addrspace(2)* %B, i8 addrspace(2)* addrspace(1)* getelementptr inbounds ([4 x i8 addrspace(2)*], [4 x i8 addrspace(2)*] addrspace(1)* @arst, i16 0, i16 2), align 4 95 96; CHECK-NEXT: ret void 97 %A = getelementptr [4 x i8 addrspace(2)*], [4 x i8 addrspace(2)*] addrspace(1)* @arst, i16 0, i16 2 98 store i8 addrspace(2)* %B, i8 addrspace(2)* addrspace(1)* %A 99 ret void 100} 101 102define i32* @test7(i32* %I, i64 %C, i64 %D) { 103 %A = getelementptr i32, i32* %I, i64 %C 104 %B = getelementptr i32, i32* %A, i64 %D 105 ret i32* %B 106; CHECK-LABEL: @test7( 107; CHECK: %A = getelementptr i32, i32* %I, i64 %C 108; CHECK: %B = getelementptr i32, i32* %A, i64 %D 109} 110 111define i8* @test8([10 x i32]* %X) { 112 ;; Fold into the cast. 113 %A = getelementptr [10 x i32], [10 x i32]* %X, i64 0, i64 0 114 %B = bitcast i32* %A to i8* 115 ret i8* %B 116; CHECK-LABEL: @test8( 117; CHECK: bitcast [10 x i32]* %X to i8* 118} 119 120define i32 @test9() { 121 %A = getelementptr { i32, double }, { i32, double }* null, i32 0, i32 1 122 %B = ptrtoint double* %A to i32 123 ret i32 %B 124; CHECK-LABEL: @test9( 125; CHECK: ret i32 8 126} 127 128define i1 @test10({ i32, i32 }* %x, { i32, i32 }* %y) { 129 %tmp.1 = getelementptr { i32, i32 }, { i32, i32 }* %x, i32 0, i32 1 130 %tmp.3 = getelementptr { i32, i32 }, { i32, i32 }* %y, i32 0, i32 1 131 ;; seteq x, y 132 %tmp.4 = icmp eq i32* %tmp.1, %tmp.3 133 ret i1 %tmp.4 134; CHECK-LABEL: @test10( 135; CHECK: icmp eq { i32, i32 }* %x, %y 136} 137 138define i1 @test11({ i32, i32 }* %X) { 139 %P = getelementptr { i32, i32 }, { i32, i32 }* %X, i32 0, i32 0 140 %Q = icmp eq i32* %P, null 141 ret i1 %Q 142; CHECK-LABEL: @test11( 143; CHECK: icmp eq { i32, i32 }* %X, null 144} 145 146 147; PR4748 148define i32 @test12(%struct.A* %a) { 149entry: 150 %g3 = getelementptr %struct.A, %struct.A* %a, i32 0, i32 1 151 store i32 10, i32* %g3, align 4 152 153 %g4 = getelementptr %struct.A, %struct.A* %a, i32 0, i32 0 154 155 %new_a = bitcast %struct.B* %g4 to %struct.A* 156 157 %g5 = getelementptr %struct.A, %struct.A* %new_a, i32 0, i32 1 158 %a_a = load i32, i32* %g5, align 4 159 ret i32 %a_a 160; CHECK-LABEL: @test12( 161; CHECK: getelementptr %struct.A, %struct.A* %a, i64 0, i32 1 162; CHECK-NEXT: store i32 10, i32* %g3 163; CHECK-NEXT: ret i32 10 164} 165 166 167; PR2235 168%S = type { i32, [ 100 x i32] } 169define i1 @test13(i64 %X, %S* %P) { 170 %A = getelementptr inbounds %S, %S* %P, i32 0, i32 1, i64 %X 171 %B = getelementptr inbounds %S, %S* %P, i32 0, i32 0 172 %C = icmp eq i32* %A, %B 173 ret i1 %C 174; CHECK-LABEL: @test13( 175; CHECK: %C = icmp eq i64 %X, -1 176} 177 178; This is a test of icmp + shl nuw in disguise - 4611... is 0x3fff... 179define <2 x i1> @test13_vector(<2 x i64> %X, <2 x %S*> %P) nounwind { 180; CHECK-LABEL: @test13_vector( 181; CHECK-NEXT: [[C:%.*]] = icmp eq <2 x i64> %X, <i64 4611686018427387903, i64 4611686018427387903> 182; CHECK-NEXT: ret <2 x i1> [[C]] 183; 184 %A = getelementptr inbounds %S, <2 x %S*> %P, <2 x i64> zeroinitializer, <2 x i32> <i32 1, i32 1>, <2 x i64> %X 185 %B = getelementptr inbounds %S, <2 x %S*> %P, <2 x i64> <i64 0, i64 0>, <2 x i32> <i32 0, i32 0> 186 %C = icmp eq <2 x i32*> %A, %B 187 ret <2 x i1> %C 188} 189 190define i1 @test13_as1(i16 %X, %S addrspace(1)* %P) { 191; CHECK-LABEL: @test13_as1( 192; CHECK-NEXT: %C = icmp eq i16 %X, -1 193; CHECK-NEXT: ret i1 %C 194 %A = getelementptr inbounds %S, %S addrspace(1)* %P, i16 0, i32 1, i16 %X 195 %B = getelementptr inbounds %S, %S addrspace(1)* %P, i16 0, i32 0 196 %C = icmp eq i32 addrspace(1)* %A, %B 197 ret i1 %C 198} 199 200; This is a test of icmp + shl nuw in disguise - 16383 is 0x3fff. 201define <2 x i1> @test13_vector_as1(<2 x i16> %X, <2 x %S addrspace(1)*> %P) { 202; CHECK-LABEL: @test13_vector_as1( 203; CHECK-NEXT: [[C:%.*]] = icmp eq <2 x i16> %X, <i16 16383, i16 16383> 204; CHECK-NEXT: ret <2 x i1> [[C]] 205; 206 %A = getelementptr inbounds %S, <2 x %S addrspace(1)*> %P, <2 x i16> <i16 0, i16 0>, <2 x i32> <i32 1, i32 1>, <2 x i16> %X 207 %B = getelementptr inbounds %S, <2 x %S addrspace(1)*> %P, <2 x i16> <i16 0, i16 0>, <2 x i32> <i32 0, i32 0> 208 %C = icmp eq <2 x i32 addrspace(1)*> %A, %B 209 ret <2 x i1> %C 210} 211 212define i1 @test13_i32(i32 %X, %S* %P) { 213; CHECK-LABEL: @test13_i32( 214; CHECK: %C = icmp eq i32 %X, -1 215 %A = getelementptr inbounds %S, %S* %P, i32 0, i32 1, i32 %X 216 %B = getelementptr inbounds %S, %S* %P, i32 0, i32 0 217 %C = icmp eq i32* %A, %B 218 ret i1 %C 219} 220 221define i1 @test13_i16(i16 %X, %S* %P) { 222; CHECK-LABEL: @test13_i16( 223; CHECK: %C = icmp eq i16 %X, -1 224 %A = getelementptr inbounds %S, %S* %P, i16 0, i32 1, i16 %X 225 %B = getelementptr inbounds %S, %S* %P, i16 0, i32 0 226 %C = icmp eq i32* %A, %B 227 ret i1 %C 228} 229 230define i1 @test13_i128(i128 %X, %S* %P) { 231; CHECK-LABEL: @test13_i128( 232; CHECK: %C = icmp eq i64 %1, -1 233 %A = getelementptr inbounds %S, %S* %P, i128 0, i32 1, i128 %X 234 %B = getelementptr inbounds %S, %S* %P, i128 0, i32 0 235 %C = icmp eq i32* %A, %B 236 ret i1 %C 237} 238 239 240@G = external global [3 x i8] 241define i8* @test14(i32 %Idx) { 242 %idx = zext i32 %Idx to i64 243 %tmp = getelementptr i8, i8* getelementptr ([3 x i8], [3 x i8]* @G, i32 0, i32 0), i64 %idx 244 ret i8* %tmp 245; CHECK-LABEL: @test14( 246; CHECK: getelementptr [3 x i8], [3 x i8]* @G, i64 0, i64 %idx 247} 248 249 250; Test folding of constantexpr geps into normal geps. 251@Array = external global [40 x i32] 252define i32 *@test15(i64 %X) { 253 %A = getelementptr i32, i32* getelementptr ([40 x i32], [40 x i32]* @Array, i64 0, i64 0), i64 %X 254 ret i32* %A 255; CHECK-LABEL: @test15( 256; CHECK: getelementptr [40 x i32], [40 x i32]* @Array, i64 0, i64 %X 257} 258 259 260define i32* @test16(i32* %X, i32 %Idx) { 261 %R = getelementptr i32, i32* %X, i32 %Idx 262 ret i32* %R 263; CHECK-LABEL: @test16( 264; CHECK: sext i32 %Idx to i64 265} 266 267 268define i1 @test17(i16* %P, i32 %I, i32 %J) { 269 %X = getelementptr inbounds i16, i16* %P, i32 %I 270 %Y = getelementptr inbounds i16, i16* %P, i32 %J 271 %C = icmp ult i16* %X, %Y 272 ret i1 %C 273; CHECK-LABEL: @test17( 274; CHECK: %C = icmp slt i32 %I, %J 275} 276 277define i1 @test18(i16* %P, i32 %I) { 278 %X = getelementptr inbounds i16, i16* %P, i32 %I 279 %C = icmp ult i16* %X, %P 280 ret i1 %C 281; CHECK-LABEL: @test18( 282; CHECK: %C = icmp slt i32 %I, 0 283} 284 285; Larger than the pointer size for a non-zero address space 286define i1 @test18_as1(i16 addrspace(1)* %P, i32 %I) { 287; CHECK-LABEL: @test18_as1( 288; CHECK-NEXT: %1 = trunc i32 %I to i16 289; CHECK-NEXT: %C = icmp slt i16 %1, 0 290; CHECK-NEXT: ret i1 %C 291 %X = getelementptr inbounds i16, i16 addrspace(1)* %P, i32 %I 292 %C = icmp ult i16 addrspace(1)* %X, %P 293 ret i1 %C 294} 295 296; Smaller than the pointer size for a non-zero address space 297define i1 @test18_as1_i32(i16 addrspace(1)* %P, i32 %I) { 298; CHECK-LABEL: @test18_as1_i32( 299; CHECK-NEXT: %1 = trunc i32 %I to i16 300; CHECK-NEXT: %C = icmp slt i16 %1, 0 301; CHECK-NEXT: ret i1 %C 302 %X = getelementptr inbounds i16, i16 addrspace(1)* %P, i32 %I 303 %C = icmp ult i16 addrspace(1)* %X, %P 304 ret i1 %C 305} 306 307; Smaller than pointer size 308define i1 @test18_i16(i16* %P, i16 %I) { 309; CHECK-LABEL: @test18_i16( 310; CHECK: %C = icmp slt i16 %I, 0 311 %X = getelementptr inbounds i16, i16* %P, i16 %I 312 %C = icmp ult i16* %X, %P 313 ret i1 %C 314} 315 316; Same as pointer size 317define i1 @test18_i64(i16* %P, i64 %I) { 318; CHECK-LABEL: @test18_i64( 319; CHECK: %C = icmp slt i64 %I, 0 320 %X = getelementptr inbounds i16, i16* %P, i64 %I 321 %C = icmp ult i16* %X, %P 322 ret i1 %C 323} 324 325; Larger than the pointer size 326define i1 @test18_i128(i16* %P, i128 %I) { 327; CHECK-LABEL: @test18_i128( 328; CHECK: %C = icmp slt i64 %1, 0 329 %X = getelementptr inbounds i16, i16* %P, i128 %I 330 %C = icmp ult i16* %X, %P 331 ret i1 %C 332} 333 334define i32 @test19(i32* %P, i32 %A, i32 %B) { 335 %tmp.4 = getelementptr inbounds i32, i32* %P, i32 %A 336 %tmp.9 = getelementptr inbounds i32, i32* %P, i32 %B 337 %tmp.10 = icmp eq i32* %tmp.4, %tmp.9 338 %tmp.11 = zext i1 %tmp.10 to i32 339 ret i32 %tmp.11 340; CHECK-LABEL: @test19( 341; CHECK: icmp eq i32 %A, %B 342} 343 344define i32 @test20(i32* %P, i32 %A, i32 %B) { 345 %tmp.4 = getelementptr inbounds i32, i32* %P, i32 %A 346 %tmp.6 = icmp eq i32* %tmp.4, %P 347 %tmp.7 = zext i1 %tmp.6 to i32 348 ret i32 %tmp.7 349; CHECK-LABEL: @test20( 350; CHECK: icmp eq i32 %A, 0 351} 352 353define i32 @test20_as1(i32 addrspace(1)* %P, i32 %A, i32 %B) { 354 %tmp.4 = getelementptr inbounds i32, i32 addrspace(1)* %P, i32 %A 355 %tmp.6 = icmp eq i32 addrspace(1)* %tmp.4, %P 356 %tmp.7 = zext i1 %tmp.6 to i32 357 ret i32 %tmp.7 358; CHECK-LABEL: @test20_as1( 359; CHECK: icmp eq i16 %1, 0 360} 361 362 363define i32 @test21() { 364 %pbob1 = alloca %intstruct 365 %pbob2 = getelementptr %intstruct, %intstruct* %pbob1 366 %pbobel = getelementptr %intstruct, %intstruct* %pbob2, i64 0, i32 0 367 %rval = load i32, i32* %pbobel 368 ret i32 %rval 369; CHECK-LABEL: @test21( 370; CHECK: getelementptr inbounds %intstruct, %intstruct* %pbob1, i64 0, i32 0 371} 372 373 374@A = global i32 1 ; <i32*> [#uses=1] 375@B = global i32 2 ; <i32*> [#uses=1] 376 377define i1 @test22() { 378 %C = icmp ult i32* getelementptr (i32, i32* @A, i64 1), 379 getelementptr (i32, i32* @B, i64 2) 380 ret i1 %C 381; CHECK-LABEL: @test22( 382; CHECK: icmp ult (i32* getelementptr inbounds (i32, i32* @A, i64 1), i32* getelementptr (i32, i32* @B, i64 2)) 383} 384 385 386%X = type { [10 x i32], float } 387 388define i1 @test23() { 389 %A = getelementptr %X, %X* null, i64 0, i32 0, i64 0 ; <i32*> [#uses=1] 390 %B = icmp ne i32* %A, null ; <i1> [#uses=1] 391 ret i1 %B 392; CHECK-LABEL: @test23( 393; CHECK: ret i1 false 394} 395 396define void @test25() { 397entry: 398 %tmp = getelementptr { i64, i64, i64, i64 }, { i64, i64, i64, i64 }* null, i32 0, i32 3 ; <i64*> [#uses=1] 399 %tmp.upgrd.1 = load i64, i64* %tmp ; <i64> [#uses=1] 400 %tmp8.ui = load i64, i64* null ; <i64> [#uses=1] 401 %tmp8 = bitcast i64 %tmp8.ui to i64 ; <i64> [#uses=1] 402 %tmp9 = and i64 %tmp8, %tmp.upgrd.1 ; <i64> [#uses=1] 403 %sext = trunc i64 %tmp9 to i32 ; <i32> [#uses=1] 404 %tmp27.i = sext i32 %sext to i64 ; <i64> [#uses=1] 405 tail call void @foo25( i32 0, i64 %tmp27.i ) 406 unreachable 407; CHECK-LABEL: @test25( 408} 409 410declare void @foo25(i32, i64) 411 412 413; PR1637 414define i1 @test26(i8* %arr) { 415 %X = getelementptr i8, i8* %arr, i32 1 416 %Y = getelementptr i8, i8* %arr, i32 1 417 %test = icmp uge i8* %X, %Y 418 ret i1 %test 419; CHECK-LABEL: @test26( 420; CHECK: ret i1 true 421} 422 423 %struct.__large_struct = type { [100 x i64] } 424 %struct.compat_siginfo = type { i32, i32, i32, { [29 x i32] } } 425 %struct.siginfo_t = type { i32, i32, i32, { { i32, i32, [0 x i8], %struct.sigval_t, i32 }, [88 x i8] } } 426 %struct.sigval_t = type { i8* } 427 428define i32 @test27(%struct.compat_siginfo* %to, %struct.siginfo_t* %from) { 429entry: 430 %from_addr = alloca %struct.siginfo_t* 431 %tmp344 = load %struct.siginfo_t*, %struct.siginfo_t** %from_addr, align 8 432 %tmp345 = getelementptr %struct.siginfo_t, %struct.siginfo_t* %tmp344, i32 0, i32 3 433 %tmp346 = getelementptr { { i32, i32, [0 x i8], %struct.sigval_t, i32 }, [88 x i8] }, { { i32, i32, [0 x i8], %struct.sigval_t, i32 }, [88 x i8] }* %tmp345, i32 0, i32 0 434 %tmp346347 = bitcast { i32, i32, [0 x i8], %struct.sigval_t, i32 }* %tmp346 to { i32, i32, %struct.sigval_t }* 435 %tmp348 = getelementptr { i32, i32, %struct.sigval_t }, { i32, i32, %struct.sigval_t }* %tmp346347, i32 0, i32 2 436 %tmp349 = getelementptr %struct.sigval_t, %struct.sigval_t* %tmp348, i32 0, i32 0 437 %tmp349350 = bitcast i8** %tmp349 to i32* 438 %tmp351 = load i32, i32* %tmp349350, align 8 439 %tmp360 = call i32 asm sideeffect "...", 440 "=r,ir,*m,i,0,~{dirflag},~{fpsr},~{flags}"( i32 %tmp351, 441 %struct.__large_struct* null, i32 -14, i32 0 ) 442 unreachable 443; CHECK-LABEL: @test27( 444} 445 446; PR1978 447 %struct.x = type <{ i8 }> 448@.str = internal constant [6 x i8] c"Main!\00" 449@.str1 = internal constant [12 x i8] c"destroy %p\0A\00" 450 451define i32 @test28() nounwind { 452entry: 453 %orientations = alloca [1 x [1 x %struct.x]] 454 %tmp3 = call i32 @puts( i8* getelementptr ([6 x i8], [6 x i8]* @.str, i32 0, i32 0) ) nounwind 455 %tmp45 = getelementptr inbounds [1 x [1 x %struct.x]], [1 x [1 x %struct.x]]* %orientations, i32 1, i32 0, i32 0 456 %orientations62 = getelementptr [1 x [1 x %struct.x]], [1 x [1 x %struct.x]]* %orientations, i32 0, i32 0, i32 0 457 br label %bb10 458 459bb10: 460 %indvar = phi i32 [ 0, %entry ], [ %indvar.next, %bb10 ] 461 %tmp.0.reg2mem.0.rec = mul i32 %indvar, -1 462 %tmp12.rec = add i32 %tmp.0.reg2mem.0.rec, -1 463 %tmp12 = getelementptr inbounds %struct.x, %struct.x* %tmp45, i32 %tmp12.rec 464 %tmp16 = call i32 (i8*, ...) @printf( i8* getelementptr ([12 x i8], [12 x i8]* @.str1, i32 0, i32 0), %struct.x* %tmp12 ) nounwind 465 %tmp84 = icmp eq %struct.x* %tmp12, %orientations62 466 %indvar.next = add i32 %indvar, 1 467 br i1 %tmp84, label %bb17, label %bb10 468 469bb17: 470 ret i32 0 471; CHECK-LABEL: @test28( 472; CHECK: icmp eq i32 %indvar, 0 473} 474 475declare i32 @puts(i8*) 476 477declare i32 @printf(i8*, ...) 478 479 480 481 482; rdar://6762290 483 %T = type <{ i64, i64, i64 }> 484define i32 @test29(i8* %start, i32 %X) nounwind { 485entry: 486 %tmp3 = load i64, i64* null 487 %add.ptr = getelementptr i8, i8* %start, i64 %tmp3 488 %tmp158 = load i32, i32* null 489 %add.ptr159 = getelementptr %T, %T* null, i32 %tmp158 490 %add.ptr209 = getelementptr i8, i8* %start, i64 0 491 %add.ptr212 = getelementptr i8, i8* %add.ptr209, i32 %X 492 %cmp214 = icmp ugt i8* %add.ptr212, %add.ptr 493 br i1 %cmp214, label %if.then216, label %if.end363 494 495if.then216: 496 ret i32 1 497 498if.end363: 499 ret i32 0 500; CHECK-LABEL: @test29( 501} 502 503 504; PR3694 505define i32 @test30(i32 %m, i32 %n) nounwind { 506entry: 507 %0 = alloca i32, i32 %n, align 4 508 %1 = bitcast i32* %0 to [0 x i32]* 509 call void @test30f(i32* %0) nounwind 510 %2 = getelementptr [0 x i32], [0 x i32]* %1, i32 0, i32 %m 511 %3 = load i32, i32* %2, align 4 512 ret i32 %3 513; CHECK-LABEL: @test30( 514; CHECK: getelementptr i32 515} 516 517declare void @test30f(i32*) 518 519 520 521define i1 @test31(i32* %A) { 522 %B = getelementptr i32, i32* %A, i32 1 523 %C = getelementptr i32, i32* %A, i64 1 524 %V = icmp eq i32* %B, %C 525 ret i1 %V 526; CHECK-LABEL: @test31( 527; CHECK: ret i1 true 528} 529 530 531; PR1345 532define i8* @test32(i8* %v) { 533 %A = alloca [4 x i8*], align 16 534 %B = getelementptr [4 x i8*], [4 x i8*]* %A, i32 0, i32 0 535 store i8* null, i8** %B 536 %C = bitcast [4 x i8*]* %A to { [16 x i8] }* 537 %D = getelementptr { [16 x i8] }, { [16 x i8] }* %C, i32 0, i32 0, i32 8 538 %E = bitcast i8* %D to i8** 539 store i8* %v, i8** %E 540 %F = getelementptr [4 x i8*], [4 x i8*]* %A, i32 0, i32 2 541 %G = load i8*, i8** %F 542 ret i8* %G 543; CHECK-LABEL: @test32( 544; CHECK: %D = getelementptr inbounds [4 x i8*], [4 x i8*]* %A, i64 0, i64 1 545; CHECK: %F = getelementptr inbounds [4 x i8*], [4 x i8*]* %A, i64 0, i64 2 546} 547 548; PR3290 549%struct.Key = type { { i32, i32 } } 550%struct.anon = type <{ i8, [3 x i8], i32 }> 551 552define i32* @test33(%struct.Key* %A) { 553; CHECK-LABEL: @test33( 554; CHECK: getelementptr %struct.Key, %struct.Key* %A, i64 0, i32 0, i32 1 555 %B = bitcast %struct.Key* %A to %struct.anon* 556 %C = getelementptr %struct.anon, %struct.anon* %B, i32 0, i32 2 557 ret i32* %C 558} 559 560define i32 addrspace(1)* @test33_as1(%struct.Key addrspace(1)* %A) { 561; CHECK-LABEL: @test33_as1( 562; CHECK: getelementptr %struct.Key, %struct.Key addrspace(1)* %A, i16 0, i32 0, i32 1 563 %B = bitcast %struct.Key addrspace(1)* %A to %struct.anon addrspace(1)* 564 %C = getelementptr %struct.anon, %struct.anon addrspace(1)* %B, i32 0, i32 2 565 ret i32 addrspace(1)* %C 566} 567 568define i32 addrspace(1)* @test33_array_as1([10 x i32] addrspace(1)* %A) { 569; CHECK-LABEL: @test33_array_as1( 570; CHECK: getelementptr [10 x i32], [10 x i32] addrspace(1)* %A, i16 0, i16 2 571 %B = bitcast [10 x i32] addrspace(1)* %A to [5 x i32] addrspace(1)* 572 %C = getelementptr [5 x i32], [5 x i32] addrspace(1)* %B, i32 0, i32 2 573 ret i32 addrspace(1)* %C 574} 575 576; Make sure the GEP indices use the right pointer sized integer 577define i32 addrspace(1)* @test33_array_struct_as1([10 x %struct.Key] addrspace(1)* %A) { 578; CHECK-LABEL: @test33_array_struct_as1( 579; CHECK: getelementptr [10 x %struct.Key], [10 x %struct.Key] addrspace(1)* %A, i16 0, i16 1, i32 0, i32 0 580 %B = bitcast [10 x %struct.Key] addrspace(1)* %A to [20 x i32] addrspace(1)* 581 %C = getelementptr [20 x i32], [20 x i32] addrspace(1)* %B, i32 0, i32 2 582 ret i32 addrspace(1)* %C 583} 584 585define i32 addrspace(1)* @test33_addrspacecast(%struct.Key* %A) { 586; CHECK-LABEL: @test33_addrspacecast( 587; CHECK: %C = getelementptr %struct.Key, %struct.Key* %A, i64 0, i32 0, i32 1 588; CHECK-NEXT: addrspacecast i32* %C to i32 addrspace(1)* 589; CHECK-NEXT: ret 590 %B = addrspacecast %struct.Key* %A to %struct.anon addrspace(1)* 591 %C = getelementptr %struct.anon, %struct.anon addrspace(1)* %B, i32 0, i32 2 592 ret i32 addrspace(1)* %C 593} 594 595 %T2 = type { i8*, i8 } 596define i8* @test34(i8* %Val, i64 %V) nounwind { 597entry: 598 %A = alloca %T2, align 8 599 %mrv_gep = bitcast %T2* %A to i64* 600 %B = getelementptr %T2, %T2* %A, i64 0, i32 0 601 602 store i64 %V, i64* %mrv_gep 603 %C = load i8*, i8** %B, align 8 604 ret i8* %C 605; CHECK-LABEL: @test34( 606; CHECK: %[[C:.*]] = inttoptr i64 %V to i8* 607; CHECK: ret i8* %[[C]] 608} 609 610%t0 = type { i8*, [19 x i8] } 611%t1 = type { i8*, [0 x i8] } 612 613@array = external global [11 x i8] 614 615@s = external global %t0 616@"\01LC8" = external constant [17 x i8] 617 618; Instcombine should be able to fold this getelementptr. 619 620define i32 @test35() nounwind { 621 call i32 (i8*, ...) @printf(i8* getelementptr ([17 x i8], [17 x i8]* @"\01LC8", i32 0, i32 0), 622 i8* getelementptr (%t1, %t1* bitcast (%t0* @s to %t1*), i32 0, i32 1, i32 0)) nounwind 623 ret i32 0 624; CHECK-LABEL: @test35( 625; CHECK: call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @"\01LC8", i64 0, i64 0), i8* getelementptr inbounds (%t0, %t0* @s, i64 0, i32 1, i64 0)) [[$NUW:#[0-9]+]] 626} 627 628; Don't treat signed offsets as unsigned. 629define i8* @test36() nounwind { 630 ret i8* getelementptr ([11 x i8], [11 x i8]* @array, i32 0, i64 -1) 631; CHECK-LABEL: @test36( 632; CHECK: ret i8* getelementptr ([11 x i8], [11 x i8]* @array, i64 0, i64 -1) 633} 634 635; Instcombine shouldn't assume that gep(A,0,1) != gep(A,1,0). 636@A37 = external constant [1 x i8] 637define i1 @test37() nounwind { 638; CHECK-LABEL: @test37( 639; CHECK: ret i1 true 640 %t = icmp eq i8* getelementptr ([1 x i8], [1 x i8]* @A37, i64 0, i64 1), 641 getelementptr ([1 x i8], [1 x i8]* @A37, i64 1, i64 0) 642 ret i1 %t 643} 644 645; Test index promotion 646define i32* @test38(i32* %I, i32 %n) { 647 %A = getelementptr i32, i32* %I, i32 %n 648 ret i32* %A 649; CHECK-LABEL: @test38( 650; CHECK: = sext i32 %n to i64 651; CHECK: %A = getelementptr i32, i32* %I, i64 % 652} 653 654; Test that we don't duplicate work when the second gep is a "bitcast". 655%pr10322_t = type { i8* } 656declare void @pr10322_f2(%pr10322_t*) 657declare void @pr10322_f3(i8**) 658define void @pr10322_f1(%pr10322_t* %foo) { 659entry: 660 %arrayidx8 = getelementptr inbounds %pr10322_t, %pr10322_t* %foo, i64 2 661 call void @pr10322_f2(%pr10322_t* %arrayidx8) nounwind 662 %tmp2 = getelementptr inbounds %pr10322_t, %pr10322_t* %arrayidx8, i64 0, i32 0 663 call void @pr10322_f3(i8** %tmp2) nounwind 664 ret void 665 666; CHECK-LABEL: @pr10322_f1( 667; CHECK: %tmp2 = getelementptr inbounds %pr10322_t, %pr10322_t* %arrayidx8, i64 0, i32 0 668} 669 670; Test that we combine the last two geps in this sequence, before we 671; would wait for gep1 and gep2 to be combined and never combine 2 and 3. 672%three_gep_t = type {i32} 673%three_gep_t2 = type {%three_gep_t} 674 675define void @three_gep_f(%three_gep_t2* %x) { 676 %gep1 = getelementptr %three_gep_t2, %three_gep_t2* %x, i64 2 677 call void @three_gep_h(%three_gep_t2* %gep1) 678 %gep2 = getelementptr %three_gep_t2, %three_gep_t2* %gep1, i64 0, i32 0 679 %gep3 = getelementptr %three_gep_t, %three_gep_t* %gep2, i64 0, i32 0 680 call void @three_gep_g(i32* %gep3) 681 682; CHECK-LABEL: @three_gep_f( 683; CHECK: %gep3 = getelementptr %three_gep_t2, %three_gep_t2* %gep1, i64 0, i32 0, i32 0 684 ret void 685} 686 687declare void @three_gep_g(i32*) 688declare void @three_gep_h(%three_gep_t2*) 689 690%struct.ham = type { i32, %struct.zot*, %struct.zot*, %struct.zot* } 691%struct.zot = type { i64, i8 } 692 693define void @test39(%struct.ham* %arg, i8 %arg1) nounwind { 694 %tmp = getelementptr inbounds %struct.ham, %struct.ham* %arg, i64 0, i32 2 695 %tmp2 = load %struct.zot*, %struct.zot** %tmp, align 8 696 %tmp3 = bitcast %struct.zot* %tmp2 to i8* 697 %tmp4 = getelementptr inbounds i8, i8* %tmp3, i64 -8 698 store i8 %arg1, i8* %tmp4, align 8 699 ret void 700 701; CHECK-LABEL: @test39( 702; CHECK: getelementptr inbounds %struct.ham, %struct.ham* %arg, i64 0, i32 2 703; CHECK: getelementptr inbounds i8, i8* %{{.+}}, i64 -8 704} 705 706define i1 @pr16483([1 x i8]* %a, [1 x i8]* %b) { 707 %c = getelementptr [1 x i8], [1 x i8]* %a, i32 0, i32 0 708 %d = getelementptr [1 x i8], [1 x i8]* %b, i32 0, i32 0 709 %cmp = icmp ult i8* %c, %d 710 ret i1 %cmp 711 712; CHECK-LABEL: @pr16483( 713; CHECK-NEXT: icmp ult [1 x i8]* %a, %b 714} 715 716define i8 @test_gep_bitcast_as1(i32 addrspace(1)* %arr, i16 %N) { 717; CHECK-LABEL: @test_gep_bitcast_as1( 718; CHECK: getelementptr i32, i32 addrspace(1)* %arr, i16 %N 719; CHECK: bitcast 720 %cast = bitcast i32 addrspace(1)* %arr to i8 addrspace(1)* 721 %V = mul i16 %N, 4 722 %t = getelementptr i8, i8 addrspace(1)* %cast, i16 %V 723 %x = load i8, i8 addrspace(1)* %t 724 ret i8 %x 725} 726 727; The element size of the array matches the element size of the pointer 728define i64 @test_gep_bitcast_array_same_size_element([100 x double]* %arr, i64 %N) { 729; CHECK-LABEL: @test_gep_bitcast_array_same_size_element( 730; CHECK: getelementptr [100 x double], [100 x double]* %arr, i64 0, i64 %V 731; CHECK: bitcast 732 %cast = bitcast [100 x double]* %arr to i64* 733 %V = mul i64 %N, 8 734 %t = getelementptr i64, i64* %cast, i64 %V 735 %x = load i64, i64* %t 736 ret i64 %x 737} 738 739; gep should be done in the original address space. 740define i64 @test_gep_bitcast_array_same_size_element_addrspacecast([100 x double]* %arr, i64 %N) { 741; CHECK-LABEL: @test_gep_bitcast_array_same_size_element_addrspacecast( 742; CHECK: getelementptr [100 x double], [100 x double]* %arr, i64 0, i64 %V 743; CHECK-NEXT: bitcast double* 744; CHECK-NEXT: %t = addrspacecast i64* 745; CHECK: load i64, i64 addrspace(3)* %t 746 %cast = addrspacecast [100 x double]* %arr to i64 addrspace(3)* 747 %V = mul i64 %N, 8 748 %t = getelementptr i64, i64 addrspace(3)* %cast, i64 %V 749 %x = load i64, i64 addrspace(3)* %t 750 ret i64 %x 751} 752 753; The element size of the array is different the element size of the pointer 754define i8 @test_gep_bitcast_array_different_size_element([100 x double]* %arr, i64 %N) { 755; CHECK-LABEL: @test_gep_bitcast_array_different_size_element( 756; CHECK: getelementptr [100 x double], [100 x double]* %arr, i64 0, i64 %N 757; CHECK: bitcast 758 %cast = bitcast [100 x double]* %arr to i8* 759 %V = mul i64 %N, 8 760 %t = getelementptr i8, i8* %cast, i64 %V 761 %x = load i8, i8* %t 762 ret i8 %x 763} 764 765define i64 @test_gep_bitcast_array_same_size_element_as1([100 x double] addrspace(1)* %arr, i16 %N) { 766; CHECK-LABEL: @test_gep_bitcast_array_same_size_element_as1( 767; CHECK: getelementptr [100 x double], [100 x double] addrspace(1)* %arr, i16 0, i16 %V 768; CHECK: bitcast 769 %cast = bitcast [100 x double] addrspace(1)* %arr to i64 addrspace(1)* 770 %V = mul i16 %N, 8 771 %t = getelementptr i64, i64 addrspace(1)* %cast, i16 %V 772 %x = load i64, i64 addrspace(1)* %t 773 ret i64 %x 774} 775 776define i8 @test_gep_bitcast_array_different_size_element_as1([100 x double] addrspace(1)* %arr, i16 %N) { 777; CHECK-LABEL: @test_gep_bitcast_array_different_size_element_as1( 778; CHECK: getelementptr [100 x double], [100 x double] addrspace(1)* %arr, i16 0, i16 %N 779; CHECK: bitcast 780 %cast = bitcast [100 x double] addrspace(1)* %arr to i8 addrspace(1)* 781 %V = mul i16 %N, 8 782 %t = getelementptr i8, i8 addrspace(1)* %cast, i16 %V 783 %x = load i8, i8 addrspace(1)* %t 784 ret i8 %x 785} 786 787define i64 @test40() { 788 %array = alloca [3 x i32], align 4 789 %gep = getelementptr inbounds [3 x i32], [3 x i32]* %array, i64 0, i64 2 790 %gepi8 = bitcast i32* %gep to i8* 791 %p = ptrtoint [3 x i32]* %array to i64 792 %np = sub i64 0, %p 793 %gep2 = getelementptr i8, i8* %gepi8, i64 %np 794 %ret = ptrtoint i8* %gep2 to i64 795 ret i64 %ret 796 797; CHECK-LABEL: @test40 798; CHECK-NEXT: ret i64 8 799} 800 801define i16 @test41([3 x i32] addrspace(1)* %array) { 802 %gep = getelementptr inbounds [3 x i32], [3 x i32] addrspace(1)* %array, i16 0, i16 2 803 %gepi8 = bitcast i32 addrspace(1)* %gep to i8 addrspace(1)* 804 %p = ptrtoint [3 x i32] addrspace(1)* %array to i16 805 %np = sub i16 0, %p 806 %gep2 = getelementptr i8, i8 addrspace(1)* %gepi8, i16 %np 807 %ret = ptrtoint i8 addrspace(1)* %gep2 to i16 808 ret i16 %ret 809 810; CHECK-LABEL: @test41( 811; CHECK-NEXT: ret i16 8 812} 813 814define i8* @test42(i8* %c1, i8* %c2) { 815 %ptrtoint = ptrtoint i8* %c1 to i64 816 %sub = sub i64 0, %ptrtoint 817 %gep = getelementptr inbounds i8, i8* %c2, i64 %sub 818 ret i8* %gep 819 820; CHECK-LABEL: @test42( 821; CHECK-NEXT: [[PTRTOINT1:%.*]] = ptrtoint i8* %c1 to i64 822; CHECK-NEXT: [[PTRTOINT2:%.*]] = ptrtoint i8* %c2 to i64 823; CHECK-NEXT: [[SUB:%.*]] = sub i64 [[PTRTOINT2]], [[PTRTOINT1]] 824; CHECK-NEXT: [[INTTOPTR:%.*]] = inttoptr i64 [[SUB]] to i8* 825; CHECK-NEXT: ret i8* [[INTTOPTR]] 826} 827 828define i16* @test43(i16* %c1, i16* %c2) { 829 %ptrtoint = ptrtoint i16* %c1 to i64 830 %sub = sub i64 0, %ptrtoint 831 %shr = ashr i64 %sub, 1 832 %gep = getelementptr inbounds i16, i16* %c2, i64 %shr 833 ret i16* %gep 834 835; CHECK-LABEL: @test43( 836; CHECK-NEXT: [[PTRTOINT1:%.*]] = ptrtoint i16* %c1 to i64 837; CHECK-NEXT: [[PTRTOINT2:%.*]] = ptrtoint i16* %c2 to i64 838; CHECK-NEXT: [[SUB:%.*]] = sub i64 [[PTRTOINT2]], [[PTRTOINT1]] 839; CHECK-NEXT: [[INTTOPTR:%.*]] = inttoptr i64 [[SUB]] to i16* 840; CHECK-NEXT: ret i16* [[INTTOPTR]] 841} 842 843define %struct.C* @test44(%struct.C* %c1, %struct.C* %c2) { 844 %ptrtoint = ptrtoint %struct.C* %c1 to i64 845 %sub = sub i64 0, %ptrtoint 846 %shr = sdiv i64 %sub, 7 847 %gep = getelementptr inbounds %struct.C, %struct.C* %c2, i64 %shr 848 ret %struct.C* %gep 849 850; CHECK-LABEL: @test44( 851; CHECK-NEXT: [[PTRTOINT1:%.*]] = ptrtoint %struct.C* %c1 to i64 852; CHECK-NEXT: [[PTRTOINT2:%.*]] = ptrtoint %struct.C* %c2 to i64 853; CHECK-NEXT: [[SUB:%.*]] = sub i64 [[PTRTOINT2]], [[PTRTOINT1]] 854; CHECK-NEXT: [[INTTOPTR:%.*]] = inttoptr i64 [[SUB]] to %struct.C* 855; CHECK-NEXT: ret %struct.C* [[INTTOPTR]] 856} 857 858define %struct.C* @test45(%struct.C* %c1, %struct.C** %c2) { 859 %ptrtoint1 = ptrtoint %struct.C* %c1 to i64 860 %ptrtoint2 = ptrtoint %struct.C** %c2 to i64 861 %sub = sub i64 %ptrtoint2, %ptrtoint1 ; C2 - C1 862 %shr = sdiv i64 %sub, 7 863 %gep = getelementptr inbounds %struct.C, %struct.C* %c1, i64 %shr ; C1 + (C2 - C1) 864 ret %struct.C* %gep 865 866; CHECK-LABEL: @test45( 867; CHECK-NEXT: [[BITCAST:%.*]] = bitcast %struct.C** %c2 to %struct.C* 868; CHECK-NEXT: ret %struct.C* [[BITCAST]] 869} 870 871define %struct.C* @test46(%struct.C* %c1, %struct.C* %c2, i64 %N) { 872 %ptrtoint = ptrtoint %struct.C* %c1 to i64 873 %sub = sub i64 0, %ptrtoint 874 %sdiv = sdiv i64 %sub, %N 875 %gep = getelementptr inbounds %struct.C, %struct.C* %c2, i64 %sdiv 876 ret %struct.C* %gep 877 878; CHECK-LABEL: @test46( 879; CHECK-NEXT: [[PTRTOINT:%.*]] = ptrtoint %struct.C* %c1 to i64 880; CHECK-NEXT: [[SUB:%.*]] = sub i64 0, [[PTRTOINT]] 881; CHECK-NEXT: [[SDIV:%.*]] = sdiv i64 [[SUB]], %N 882; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds %struct.C, %struct.C* %c2, i64 %sdiv 883; CHECK-NEXT: ret %struct.C* [[GEP]] 884} 885 886define i32* @test47(i32* %I, i64 %C, i64 %D) { 887 %sub = sub i64 %D, %C 888 %A = getelementptr i32, i32* %I, i64 %C 889 %B = getelementptr i32, i32* %A, i64 %sub 890 ret i32* %B 891; CHECK-LABEL: @test47( 892; CHECK-NEXT: %B = getelementptr i32, i32* %I, i64 %D 893} 894 895define i32* @test48(i32* %I, i64 %C, i64 %D) { 896 %sub = sub i64 %D, %C 897 %A = getelementptr i32, i32* %I, i64 %sub 898 %B = getelementptr i32, i32* %A, i64 %C 899 ret i32* %B 900; CHECK-LABEL: @test48( 901; CHECK-NEXT: %B = getelementptr i32, i32* %I, i64 %D 902} 903 904define i32* @test49(i32* %I, i64 %C) { 905 %notC = xor i64 -1, %C 906 %A = getelementptr i32, i32* %I, i64 %C 907 %B = getelementptr i32, i32* %A, i64 %notC 908 ret i32* %B 909; CHECK-LABEL: @test49( 910; CHECK-NEXT: %B = getelementptr i32, i32* %I, i64 -1 911} 912 913define i32 addrspace(1)* @ascast_0_gep(i32* %p) nounwind { 914; CHECK-LABEL: @ascast_0_gep( 915; CHECK-NOT: getelementptr 916; CHECK: ret 917 %gep = getelementptr i32, i32* %p, i32 0 918 %x = addrspacecast i32* %gep to i32 addrspace(1)* 919 ret i32 addrspace(1)* %x 920} 921 922; Do not merge the GEP and the addrspacecast, because it would undo the 923; addrspacecast canonicalization. 924define i32 addrspace(1)* @ascast_0_0_gep([128 x i32]* %p) nounwind { 925; CHECK-LABEL: @ascast_0_0_gep( 926; CHECK-NEXT: getelementptr [128 x i32] 927; CHECK-NEXT: addrspacecast i32* 928; CHECK-NEXT: ret i32 addrspace(1)* 929 %gep = getelementptr [128 x i32], [128 x i32]* %p, i32 0, i32 0 930 %x = addrspacecast i32* %gep to i32 addrspace(1)* 931 ret i32 addrspace(1)* %x 932} 933 934define <2 x i32*> @PR32414(i32** %ptr) { 935; CHECK-LABEL: @PR32414( 936; CHECK-NEXT: [[TMP0:%.*]] = bitcast i32** %ptr to i32* 937; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i32, i32* [[TMP0]], <2 x i64> <i64 0, i64 1> 938; CHECK-NEXT: ret <2 x i32*> [[TMP1]] 939; 940 %tmp0 = bitcast i32** %ptr to i32* 941 %tmp1 = getelementptr inbounds i32, i32* %tmp0, <2 x i64> <i64 0, i64 1> 942 ret <2 x i32*> %tmp1 943} 944 945; CHECK: attributes [[$NUW]] = { nounwind } 946