mono/mini/objects.cs

   1 using System;
   2 using System.Text;
   3 using System.Reflection;
   4 using System.Runtime.InteropServices;
   5 using System.Runtime.CompilerServices;
   6
   7 /*
   8  * Regression tests for the mono JIT.
   9  *
  10  * Each test needs to be of the form:
  11  *
  12  * static int test_<result>_<name> ();
  13  *
  14  * where <result> is an integer (the value that needs to be returned by
  15  * the method to make it pass.
  16  * <name> is a user-displayed name used to identify the test.
  17  *
  18  * The tests can be driven in two ways:
  19  * *) running the program directly: Main() uses reflection to find and invoke
  20  *      the test methods (this is useful mostly to check that the tests are correct)
  21  * *) with the --regression switch of the jit (this is the preferred way since
  22  *      all the tests will be run with optimizations on and off)
  23  *
  24  * The reflection logic could be moved to a .dll since we need at least another
  25  * regression test file written in IL code to have better control on how
  26  * the IL code looks.
  27  */
  28
  29 struct Simple {
  30         public int a;
  31         public byte b;
  32         public short c;
  33         public long d;
  34 }
  35
  36 struct Small {
  37         public byte b1;
  38         public byte b2;
  39 }
  40
  41 // Size=2, Align=1
  42 struct Foo {
  43         bool b1;
  44         bool b2;
  45 }
  46
  47 struct Large {
  48         int one;
  49         int two;
  50         long three;
  51         long four;
  52         int five;
  53         long six;
  54         int seven;
  55         long eight;
  56         long nine;
  57         long ten;
  58
  59         public void populate ()
  60         {
  61                 one = 1; two = 2;
  62                 three = 3; four = 4;
  63                 five = 5; six = 6;
  64                 seven = 7; eight = 8;
  65                 nine = 9; ten = 10;
  66         }
  67         public bool check ()
  68         {
  69                 return one == 1  && two == 2  &&
  70                         three == 3  && four == 4  &&
  71                         five == 5  && six == 6  &&
  72                         seven == 7  && eight == 8  &&
  73                         nine == 9  && ten == 10;
  74         }
  75 }
  76
  77 class Sample {
  78         public int a;
  79         public Sample (int v) {
  80                 a = v;
  81         }
  82 }
  83
  84 [StructLayout ( LayoutKind.Explicit )]
  85 struct StructWithBigOffsets {
  86                 [ FieldOffset(10000) ] public byte b;
  87                 [ FieldOffset(10001) ] public sbyte sb;
  88                 [ FieldOffset(11000) ] public short s;
  89                 [ FieldOffset(11002) ] public ushort us;
  90                 [ FieldOffset(12000) ] public uint i;
  91                 [ FieldOffset(12004) ] public int si;
  92                 [ FieldOffset(13000) ] public long l;
  93                 [ FieldOffset(14000) ] public float f;
  94                 [ FieldOffset(15000) ] public double d;
  95 }
  96
  97 enum SampleEnum {
  98         A,
  99         B,
 100         C
 101 }
 102
 103 struct Alpha {
 104         public long a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v;
 105 }
 106
 107 struct Beta {
 108         public Alpha a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v;
 109 }
 110
 111 struct Gamma {
 112         public Beta a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v;
 113 }
 114
 115 class Tests {
 116
 117         static int Main () {
 118                 return TestDriver.RunTests (typeof (Tests));
 119         }
 120
 121         public static int test_0_return () {
 122                 Simple s;
 123                 s.a = 1;
 124                 s.b = 2;
 125                 s.c = (short)(s.a + s.b);
 126                 s.d = 4;
 127                 return s.a - 1;
 128         }
 129
 130         public static int test_0_string_access () {
 131                 string s = "Hello";
 132                 if (s [1] != 'e')
 133                         return 1;
 134                 return 0;
 135         }
 136
 137         public static int test_0_string_virtual_call () {
 138                 string s = "Hello";
 139                 string s2 = s.ToString ();
 140                 if (s2 [1] != 'e')
 141                         return 1;
 142                 return 0;
 143         }
 144
 145         public static int test_0_iface_call () {
 146                 string s = "Hello";
 147                 object o = ((ICloneable)s).Clone ();
 148                 return 0;
 149         }
 150
 151         public static int test_5_newobj () {
 152                 Sample s = new Sample (5);
 153                 return s.a;
 154         }
 155
 156         public static int test_4_box () {
 157                 object obj = 4;
 158                 return (int)obj;
 159         }
 160
 161         public static int test_0_enum_unbox () {
 162                 SampleEnum x = SampleEnum.A;
 163                 object o = x;
 164
 165                 int res = 1;
 166
 167                 res = (int)o;
 168
 169                 return res;
 170         }
 171
 172         static Simple get_simple (int v) {
 173                 Simple r = new Simple ();
 174                 r.a = v;
 175                 r.b = (byte)(v + 1);
 176                 r.c = (short)(v + 2);
 177                 r.d = v + 3;
 178
 179                 return r;
 180         }
 181
 182         public static int test_3_return_struct () {
 183                 Simple v = get_simple (1);
 184
 185                 if (v.a != 1)
 186                         return 0;
 187                 if (v.b != 2)
 188                         return 0;
 189                 if (v.c != 3)
 190                         return 0;
 191                 if (v.d != 4)
 192                         return 0;
 193                 return 3;
 194         }
 195
 196         public virtual Simple v_get_simple (int v)
 197         {
 198                 return get_simple (v);
 199         }
 200
 201         public static int test_2_return_struct_virtual () {
 202                 Tests t = new Tests ();
 203                 Simple v = t.v_get_simple (2);
 204
 205                 if (v.a != 2)
 206                         return 0;
 207                 if (v.b != 3)
 208                         return 0;
 209                 if (v.c != 4)
 210                         return 0;
 211                 if (v.d != 5)
 212                         return 0;
 213                 return 2;
 214         }
 215
 216         static int receive_simple (int a, Simple v, int b) {
 217                 if (v.a != 1)
 218                         return 1;
 219                 if (v.b != 2)
 220                         return 2;
 221                 if (v.c != 3)
 222                         return 3;
 223                 if (v.d != 4)
 224                         return 4;
 225                 if (a != 7)
 226                         return 5;
 227                 if (b != 9)
 228                         return 6;
 229                 return 0;
 230         }
 231
 232         public static int test_5_pass_struct () {
 233                 Simple v = get_simple (1);
 234                 if (receive_simple (7, v, 9) != 0)
 235                         return 0;
 236                 if (receive_simple (7, get_simple (1), 9) != 0)
 237                         return 1;
 238                 return 5;
 239         }
 240
 241         static Simple s_v;
 242         public static int test_5_pass_static_struct () {
 243                 s_v = get_simple (1);
 244                 if (receive_simple (7, s_v, 9) != 0)
 245                         return 0;
 246                 return 5;
 247         }
 248
 249         // Test alignment of small structs
 250
 251         static Small get_small (byte v) {
 252                 Small r = new Small ();
 253
 254                 r.b1 = v;
 255                 r.b2 = (byte)(v + 1);
 256
 257                 return r;
 258         }
 259
 260         static Small return_small (Small s) {
 261                 return s;
 262         }
 263
 264         static int receive_small (int a, Small v, int b) {
 265                 if (v.b1 != 1)
 266                         return 1;
 267                 if (v.b2 != 2)
 268                         return 2;
 269                 return 0;
 270         }
 271
 272         static int receive_small_sparc_many_args (int a, int a2, int a3, int a4, int a5, int a6, Small v, int b) {
 273                 if (v.b1 != 1)
 274                         return 1;
 275                 if (v.b2 != 2)
 276                         return 2;
 277                 return 0;
 278         }
 279
 280         public static int test_5_pass_small_struct () {
 281                 Small v = get_small (1);
 282                 if (receive_small (7, v, 9) != 0)
 283                         return 0;
 284                 if (receive_small (7, get_small (1), 9) != 0)
 285                         return 1;
 286                 if (receive_small_sparc_many_args (1, 2, 3, 4, 5, 6, v, 9) != 0)
 287                         return 2;
 288                 v = return_small (v);
 289                 if (v.b1 != 1)
 290                         return 3;
 291                 if (v.b2 != 2)
 292                         return 4;
 293                 return 5;
 294         }
 295
 296         // 64-bits, 32-bit aligned
 297         struct struct1 {
 298                 public int      a;
 299                 public int      b;
 300         };
 301
 302         static int check_struct1(struct1 x) {
 303                 if (x.a != 1)
 304                         return 1;
 305                 if (x.b != 2)
 306                         return 2;
 307                 return 0;
 308         }
 309
 310         static int pass_struct1(int a, int b, struct1 x) {
 311                 if (a != 3)
 312                         return 3;
 313                 if (b != 4)
 314                         return 4;
 315                 return check_struct1(x);
 316         }
 317
 318         static int pass_struct1(int a, struct1 x) {
 319                 if (a != 3)
 320                         return 3;
 321                 return check_struct1(x);
 322         }
 323
 324         static int pass_struct1(struct1 x) {
 325                 return check_struct1(x);
 326         }
 327
 328         public static int test_0_struct1_args () {
 329                 int r;
 330                 struct1 x;
 331
 332                 x.a = 1;
 333                 x.b = 2;
 334                 if ((r = check_struct1(x)) != 0)
 335                         return r;
 336                 if ((r = pass_struct1(x)) != 0)
 337                         return r + 10;
 338                 if ((r = pass_struct1(3, x)) != 0)
 339                         return r + 20;
 340                 if ((r = pass_struct1(3, 4, x)) != 0)
 341                         return r + 30;
 342                 return 0;
 343         }
 344
 345         // 64-bits, 64-bit aligned
 346         struct struct2 {
 347                 public long     a;
 348         };
 349
 350         static int check_struct2(struct2 x) {
 351                 if (x.a != 1)
 352                         return 1;
 353                 return 0;
 354         }
 355
 356         static int pass_struct2(int a, int b, int c, struct2 x) {
 357                 if (a != 3)
 358                         return 3;
 359                 if (b != 4)
 360                         return 4;
 361                 if (c != 5)
 362                         return 5;
 363                 return check_struct2(x);
 364         }
 365
 366         static int pass_struct2(int a, int b, struct2 x) {
 367                 if (a != 3)
 368                         return 3;
 369                 if (b != 4)
 370                         return 4;
 371                 return check_struct2(x);
 372         }
 373
 374         static int pass_struct2(int a, struct2 x) {
 375                 if (a != 3)
 376                         return 3;
 377                 return check_struct2(x);
 378         }
 379
 380         static int pass_struct2(struct2 x) {
 381                 return check_struct2(x);
 382         }
 383
 384         public static int test_0_struct2_args () {
 385                 int r;
 386                 struct2 x;
 387
 388                 x.a = 1;
 389                 if ((r = check_struct2(x)) != 0)
 390                         return r;
 391                 if ((r = pass_struct2(x)) != 0)
 392                         return r + 10;
 393                 if ((r = pass_struct2(3, x)) != 0)
 394                         return r + 20;
 395                 if ((r = pass_struct2(3, 4, x)) != 0)
 396                         return r + 30;
 397                 if ((r = pass_struct2(3, 4, 5, x)) != 0)
 398                         return r + 40;
 399                 return 0;
 400         }
 401
 402         // 128 bits
 403         struct Struct3 {
 404                 public long i, j, k, l;
 405         }
 406
 407         static int pass_struct3 (int i, int j, int k, int l, int m, int n, int o, int p, Struct3 s, int q) {
 408                 if (s.i + s.j + s.k + s.l != 10)
 409                         return 1;
 410                 else
 411                         return 0;
 412         }
 413
 414         public static int test_0_struct3_args () {
 415                 Struct3 s = new Struct3 ();
 416                 s.i = 1;
 417                 s.j = 2;
 418                 s.k = 3;
 419                 s.l = 4;
 420
 421                 return pass_struct3 (1, 2, 3, 4, 5, 6, 7, 8, s, 9);
 422         }
 423
 424         // Struct with unaligned size on 64 bit machines
 425         struct Struct4 {
 426         public int i, j, k, l, m;
 427                 public int i1, i2, i3, i4, i5, i6;
 428         }
 429
 430         static int pass_struct4 (Struct4 s) {
 431                 if (s.i + s.j + s.k + s.l + s.m != 15)
 432                         return 1;
 433                 else
 434                         return 0;
 435         }
 436
 437         public static int test_0_struct4_args () {
 438                 Struct4 s = new Struct4 ();
 439                 s.i = 1;
 440                 s.j = 2;
 441                 s.k = 3;
 442                 s.l = 4;
 443                 s.m = 5;
 444
 445                 return pass_struct4 (s);
 446         }
 447
 448
 449
 450         struct AStruct {
 451                 public int i;
 452
 453                 public AStruct (int i) {
 454                         this.i = i;
 455                 }
 456
 457                 public override int GetHashCode () {
 458                         return i;
 459                 }
 460         }
 461
 462         // Test that vtypes are unboxed during a virtual call
 463         public static int test_44_unbox_trampoline () {
 464                 AStruct s = new AStruct (44);
 465                 object o = s;
 466                 return o.GetHashCode ();
 467         }
 468
 469         public static int test_0_unbox_trampoline2 () {
 470                 int i = 12;
 471                 object o = i;
 472
 473                 if (i.ToString () != "12")
 474                         return 1;
 475                 if (((Int32)o).ToString () != "12")
 476                         return 2;
 477                 if (o.ToString () != "12")
 478                         return 3;
 479                 return 0;
 480         }
 481
 482         // Test fields with big offsets
 483         public static int test_0_fields_with_big_offsets () {
 484                 StructWithBigOffsets s = new StructWithBigOffsets ();
 485                 StructWithBigOffsets s2 = new StructWithBigOffsets ();
 486
 487                 s.b = 0xde;
 488                 s.sb = 0xe;
 489                 s.s = 0x12de;
 490                 s.us = 0x12da;
 491                 s.i = 0xdeadbeef;
 492                 s.si = 0xcafe;
 493                 s.l = 0xcafebabe;
 494                 s.f = 3.14F;
 495                 s.d = 3.14;
 496
 497                 s2.b = s.b;
 498                 s2.sb = s.sb;
 499                 s2.s = s.s;
 500                 s2.us = s.us;
 501                 s2.i = s.i;
 502                 s2.si = s.si;
 503                 s2.l = s.l;
 504                 s2.f = s.f;
 505                 s2.d = s.d;
 506
 507                 if (s2.b != 0xde)
 508                         return 1;
 509                 if (s2.s != 0x12de)
 510                         return 2;
 511                 if (s2.i != 0xdeadbeef)
 512                         return 3;
 513                 if (s2.l != 0xcafebabe)
 514                         return 4;
 515                 if (s2.f != 3.14F)
 516                         return 5;
 517                 if (s2.d != 3.14)
 518                         return 6;
 519                 if (s2.sb != 0xe)
 520                         return 7;
 521                 if (s2.us != 0x12da)
 522                         return 9;
 523                 if (s2.si != 0xcafe)
 524                         return 10;
 525
 526                 return 0;
 527         }
 528
 529         class TestRegA {
 530
 531                 long buf_start;
 532                 int buf_length, buf_offset;
 533
 534                 public TestRegA () {
 535                         buf_start = 0;
 536                         buf_length = 0;
 537                         buf_offset = 0;
 538                 }
 539
 540                 public long Seek (long position) {
 541                         long pos = position;
 542                         /* interaction between the register allocator and
 543                          * allocating arguments to registers */
 544                         if (pos >= buf_start && pos <= buf_start + buf_length) {
 545                                 buf_offset = (int) (pos - buf_start);
 546                                 return pos;
 547                         }
 548                         return buf_start;
 549                 }
 550
 551         }
 552
 553         public static int test_0_seektest () {
 554                 TestRegA t = new TestRegA ();
 555                 return (int)t.Seek (0);
 556         }
 557
 558         class Super : ICloneable {
 559                 public virtual object Clone () {
 560                         return null;
 561                 }
 562         }
 563         class Duper: Super {
 564         }
 565
 566         public static int test_0_null_cast () {
 567                 object o = null;
 568
 569                 Super s = (Super)o;
 570
 571                 return 0;
 572         }
 573
 574         public static int test_0_super_cast () {
 575                 Duper d = new Duper ();
 576                 Super sup = d;
 577                 Object o = d;
 578
 579                 if (!(o is Super))
 580                         return 1;
 581                 try {
 582                         d = (Duper)sup;
 583                 } catch {
 584                         return 2;
 585                 }
 586                 if (!(d is Object))
 587                         return 3;
 588                 try {
 589                         d = (Duper)(object)sup;
 590                 } catch {
 591                         return 4;
 592                 }
 593                 return 0;
 594         }
 595
 596         public static int test_0_super_cast_array () {
 597                 Duper[] d = new Duper [0];
 598                 Super[] sup = d;
 599                 Object[] o = d;
 600
 601                 if (!(o is Super[]))
 602                         return 1;
 603                 try {
 604                         d = (Duper[])sup;
 605                 } catch {
 606                         return 2;
 607                 }
 608                 if (!(d is Object[]))
 609                         return 3;
 610                 try {
 611                         d = (Duper[])(object[])sup;
 612                 } catch {
 613                         return 4;
 614                 }
 615                 return 0;
 616         }
 617
 618         public static int test_0_multi_array_cast () {
 619                 Duper[,] d = new Duper [1, 1];
 620                 object[,] o = d;
 621
 622                 try {
 623                         o [0, 0] = new Super ();
 624                         return 1;
 625                 }
 626                 catch (ArrayTypeMismatchException) {
 627                 }
 628
 629                 return 0;
 630         }
 631
 632         public static int test_0_vector_array_cast () {
 633                 Array arr1 = Array.CreateInstance (typeof (int), new int[] {1}, new int[] {0});
 634                 Array arr2 = Array.CreateInstance (typeof (int), new int[] {1}, new int[] {10});
 635
 636                 if (arr1.GetType () != typeof (int[]))
 637                         return 1;
 638
 639                 if (arr2.GetType () == typeof (int[]))
 640                         return 2;
 641
 642                 int[] b;
 643
 644                 b = (int[])arr1;
 645
 646                 try {
 647                         b = (int[])arr2;
 648                         return 3;
 649                 }
 650                 catch (InvalidCastException) {
 651                 }
 652
 653                 if (arr2 is int[])
 654                         return 4;
 655
 656                 int [,] [] arr3 = new int [1, 1] [];
 657                 object o = arr3;
 658                 int [,] [] arr4 = (int [,] [])o;
 659
 660                 return 0;
 661         }
 662
 663         public static int test_0_enum_array_cast () {
 664                 TypeCode[] tc = new TypeCode [0];
 665                 object[] oa;
 666                 ValueType[] vta;
 667                 int[] inta;
 668                 Array a = tc;
 669                 bool ok;
 670
 671                 if (a is object[])
 672                         return 1;
 673                 if (a is ValueType[])
 674                         return 2;
 675                 if (a is Enum[])
 676                         return 3;
 677                 try {
 678                         ok = false;
 679                         oa = (object[])a;
 680                 } catch {
 681                         ok = true;
 682                 }
 683                 if (!ok)
 684                         return 4;
 685                 try {
 686                         ok = false;
 687                         vta = (ValueType[])a;
 688                 } catch {
 689                         ok = true;
 690                 }
 691                 if (!ok)
 692                         return 5;
 693                 try {
 694                         ok = true;
 695                         inta = (int[])a;
 696                 } catch {
 697                         ok = false;
 698                 }
 699                 if (!ok)
 700                         return 6;
 701                 return 0;
 702         }
 703
 704         public static int test_0_more_cast_corner_cases () {
 705                 ValueType[] vta = new ValueType [0];
 706                 Enum[] ea = new Enum [0];
 707                 Array a = vta;
 708                 object[] oa;
 709                 bool ok;
 710
 711                 if (!(a is object[]))
 712                         return 1;
 713                 if (!(a is ValueType[]))
 714                         return 2;
 715                 if (a is Enum[])
 716                         return 3;
 717                 a = ea;
 718                 if (!(a is object[]))
 719                         return 4;
 720                 if (!(a is ValueType[]))
 721                         return 5;
 722                 if (!(a is Enum[]))
 723                         return 6;
 724
 725                 try {
 726                         ok = true;
 727                         oa = (object[])a;
 728                 } catch {
 729                         ok = false;
 730                 }
 731                 if (!ok)
 732                         return 7;
 733
 734                 try {
 735                         ok = true;
 736                         oa = (Enum[])a;
 737                 } catch {
 738                         ok = false;
 739                 }
 740                 if (!ok)
 741                         return 8;
 742
 743                 try {
 744                         ok = true;
 745                         oa = (ValueType[])a;
 746                 } catch {
 747                         ok = false;
 748                 }
 749                 if (!ok)
 750                         return 9;
 751
 752                 a = vta;
 753                 try {
 754                         ok = true;
 755                         oa = (object[])a;
 756                 } catch {
 757                         ok = false;
 758                 }
 759                 if (!ok)
 760                         return 10;
 761
 762                 try {
 763                         ok = true;
 764                         oa = (ValueType[])a;
 765                 } catch {
 766                         ok = false;
 767                 }
 768                 if (!ok)
 769                         return 11;
 770
 771                 try {
 772                         ok = false;
 773                         vta = (Enum[])a;
 774                 } catch {
 775                         ok = true;
 776                 }
 777                 if (!ok)
 778                         return 12;
 779                 return 0;
 780         }
 781
 782         public static int test_0_cast_iface_array () {
 783                 object o = new ICloneable [0];
 784                 object o2 = new Duper [0];
 785                 object t;
 786                 bool ok;
 787
 788                 if (!(o is object[]))
 789                         return 1;
 790                 if (!(o2 is ICloneable[]))
 791                         return 2;
 792
 793                 try {
 794                         ok = true;
 795                         t = (object[])o;
 796                 } catch {
 797                         ok = false;
 798                 }
 799                 if (!ok)
 800                         return 3;
 801
 802                 try {
 803                         ok = true;
 804                         t = (ICloneable[])o2;
 805                 } catch {
 806                         ok = false;
 807                 }
 808                 if (!ok)
 809                         return 4;
 810
 811                 try {
 812                         ok = true;
 813                         t = (ICloneable[])o;
 814                 } catch {
 815                         ok = false;
 816                 }
 817                 if (!ok)
 818                         return 5;
 819
 820                 if (!(o is ICloneable[]))
 821                         return 6;
 822
 823                 /* add tests for interfaces that 'inherit' interfaces */
 824                 return 0;
 825         }
 826
 827         private static int[] daysmonthleap = { 0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
 828
 829         private static int AbsoluteDays (int year, int month, int day)
 830         {
 831                 int temp = 0, m = 1;
 832                 int[] days = daysmonthleap;
 833                 while (m < month)
 834                         temp += days[m++];
 835                 return ((day-1) + temp + (365* (year-1)) + ((year-1)/4) - ((year-1)/100) + ((year-1)/400));
 836         }
 837
 838         public static int test_719162_complex_div () {
 839                 int adays = AbsoluteDays (1970, 1, 1);
 840                 return adays;
 841         }
 842
 843         delegate int GetIntDel ();
 844
 845         static int return4 () {
 846                 return 4;
 847         }
 848
 849         int return5 () {
 850                 return 5;
 851         }
 852
 853         public static int test_2_static_delegate () {
 854                 GetIntDel del = new GetIntDel (return4);
 855                 int v = del ();
 856                 if (v != 4)
 857                         return 0;
 858                 return 2;
 859         }
 860
 861         public static int test_2_instance_delegate () {
 862                 Tests t = new Tests ();
 863                 GetIntDel del = new GetIntDel (t.return5);
 864                 int v = del ();
 865                 if (v != 5)
 866                         return 0;
 867                 return 2;
 868         }
 869
 870         public static int test_1_store_decimal () {
 871                 decimal[,] a = {{1}};
 872
 873                 if (a[0,0] != 1m)
 874                         return 0;
 875                 return 1;
 876         }
 877
 878         public static int test_2_intptr_stobj () {
 879                 System.IntPtr [] arr = { new System.IntPtr () };
 880
 881                 if (arr [0] != (System.IntPtr)0)
 882                         return 1;
 883                 return 2;
 884         }
 885
 886         static int llmult (int a, int b, int c, int d) {
 887                 return a + b + c + d;
 888         }
 889
 890         /*
 891          * Test that evaluation of complex arguments does not overwrite the
 892          * arguments already in outgoing registers.
 893          */
 894         public static int test_155_regalloc () {
 895                 int a = 10;
 896                 int b = 10;
 897
 898                 int c = 0;
 899                 int d = 0;
 900                 int[] arr = new int [5];
 901
 902                 return llmult (arr [c + d], 150, 5, 0);
 903         }
 904
 905         static bool large_struct_test (Large a, Large b, Large c, Large d)
 906         {
 907                 if (!a.check ()) return false;
 908                 if (!b.check ()) return false;
 909                 if (!c.check ()) return false;
 910                 if (!d.check ()) return false;
 911                 return true;
 912         }
 913
 914         public static int test_2_large_struct_pass ()
 915         {
 916                 Large a, b, c, d;
 917                 a = new Large ();
 918                 b = new Large ();
 919                 c = new Large ();
 920                 d = new Large ();
 921                 a.populate ();
 922                 b.populate ();
 923                 c.populate ();
 924                 d.populate ();
 925                 if (large_struct_test (a, b, c, d))
 926                         return 2;
 927                 return 0;
 928         }
 929
 930         public static unsafe int test_0_pin_string () {
 931                 string x = "xxx";
 932                 fixed (char *c = x) {
 933                         if (*c != 'x')
 934                                 return 1;
 935                 }
 936                 return 0;
 937         }
 938
 939         public static int my_flags;
 940         public static int test_0_and_cmp_static ()
 941         {
 942
 943                 /* various forms of test [mem], imm */
 944
 945                 my_flags = 0x01020304;
 946
 947                 if ((my_flags & 0x01020304) == 0)
 948                         return 1;
 949
 950                 if ((my_flags & 0x00000304) == 0)
 951                         return 2;
 952
 953                 if ((my_flags & 0x00000004) == 0)
 954                         return 3;
 955
 956                 if ((my_flags & 0x00000300) == 0)
 957                         return 4;
 958
 959                 if ((my_flags & 0x00020000) == 0)
 960                         return 5;
 961
 962                 if ((my_flags & 0x01000000) == 0)
 963                         return 6;
 964
 965                 return 0;
 966         }
 967
 968         static byte b;
 969         public static int test_0_byte_compares ()
 970         {
 971                 b = 0xff;
 972                 if (b == -1)
 973                         return 1;
 974                 b = 0;
 975                 if (!(b < System.Byte.MaxValue))
 976                         return 2;
 977
 978                 if (!(b <= System.Byte.MaxValue))
 979                         return 3;
 980
 981                 return 0;
 982         }
 983
 984         public static int test_71_long_shift_right () {
 985                 ulong value = 38654838087;
 986                 int x = 0;
 987                 byte [] buffer = new byte [1];
 988                 buffer [x] = ((byte)(value >> x));
 989                 return buffer [x];
 990         }
 991
 992         static long x;
 993         public static int test_0_addsub_mem ()
 994         {
 995                 x = 0;
 996                 x += 5;
 997
 998                 if (x != 5)
 999                         return 1;
1000
1001                 x -= 10;
1002
1003                 if (x != -5)
1004                         return 2;
1005
1006                 return 0;
1007         }
1008
1009         static ulong y;
1010         public static int test_0_sh32_mem ()
1011         {
1012                 y = 0x0102130405060708;
1013                 y >>= 32;
1014
1015                 if (y != 0x01021304)
1016                         return 1;
1017
1018                 y = 0x0102130405060708;
1019                 y <<= 32;
1020
1021                 if (y != 0x0506070800000000)
1022                         return 2;
1023
1024                 x = 0x0102130405060708;
1025                 x <<= 32;
1026
1027                 if (x != 0x0506070800000000)
1028                         return 2;
1029
1030                 return 0;
1031         }
1032
1033
1034         static uint dum_de_dum = 1;
1035         public static int test_0_long_arg_opt ()
1036         {
1037                 return Foo (0x1234567887654321, dum_de_dum);
1038         }
1039
1040         static int Foo (ulong x, ulong y)
1041         {
1042                 if (x != 0x1234567887654321)
1043                         return 1;
1044
1045                 if (y != 1)
1046                         return 2;
1047
1048                 return 0;
1049         }
1050
1051         public static int test_0_long_ret_opt ()
1052         {
1053                 ulong x = X ();
1054                 if (x != 0x1234567887654321)
1055                         return 1;
1056                 ulong y = Y ();
1057                 if (y != 1)
1058                         return 2;
1059
1060                 return 0;
1061         }
1062
1063         static ulong X ()
1064         {
1065                 return 0x1234567887654321;
1066         }
1067
1068         static ulong Y ()
1069         {
1070                 return dum_de_dum;
1071         }
1072
1073         /* from bug# 71515 */
1074         static int counter = 0;
1075         static bool WriteStuff () {
1076                 counter = 10;
1077                 return true;
1078         }
1079         public static int test_0_cond_branch_side_effects () {
1080                 counter = 5;
1081                 if (WriteStuff());
1082                 if (counter == 10)
1083                         return 0;
1084                 return 1;
1085         }
1086
1087         // bug #74992
1088         public static int arg_only_written (string file_name, int[]
1089 ncells ) {
1090                 if (file_name == null)
1091                         return 1;
1092
1093                 ncells = foo ();
1094                 bar (ncells [0]);
1095
1096                 return 0;
1097         }
1098
1099         public static int[] foo () {
1100                 return new int [3];
1101         }
1102
1103         public static void bar (int i) {
1104         }
1105
1106
1107         public static int test_0_arg_only_written ()
1108         {
1109                 return arg_only_written ("md.in", null);
1110         }
1111
1112         static long position = 0;
1113
1114         public static int test_4_static_inc_long () {
1115
1116                 int count = 4;
1117
1118                 position = 0;
1119
1120                 position += count;
1121
1122                 return (int)position;
1123         }
1124
1125         struct FooStruct {
1126
1127                 public FooStruct (long l) {
1128                 }
1129         }
1130
1131         public static int test_0_calls_opcode_emulation () {
1132                 // Test that emulated opcodes do not clobber arguments already in
1133                 // out registers
1134                 checked {
1135                         long val = 10000;
1136                         new FooStruct (val * 10000);
1137                 }
1138                 return 0;
1139         }
1140
1141         public static int test_0_intrins_string_length () {
1142                 string s = "ABC";
1143
1144                 return (s.Length == 3) ? 0 : 1;
1145         }
1146
1147         public static int test_0_intrins_string_chars () {
1148                 string s = "ABC";
1149
1150                 return (s [0] == 'A' && s [1] == 'B' && s [2] == 'C') ? 0 : 1;
1151         }
1152
1153         public static int test_0_intrins_object_gettype () {
1154                 object o = 1;
1155
1156                 return (o.GetType () == typeof (int)) ? 0 : 1;
1157         }
1158
1159         public static int test_0_intrins_object_gethashcode () {
1160                 object o = new Object ();
1161
1162                 return (o.GetHashCode () == o.GetHashCode ()) ? 0 : 1;
1163         }
1164
1165         class FooClass {
1166         }
1167
1168         public static int test_0_intrins_object_ctor () {
1169                 object o = new FooClass ();
1170
1171                 return (o != null) ? 0 : 1;
1172         }
1173
1174         public static int test_0_intrins_array_rank () {
1175                 int[,] a = new int [10, 10];
1176
1177                 return (a.Rank == 2) ? 0 : 1;
1178         }
1179
1180         public static int test_0_intrins_array_length () {
1181                 int[,] a = new int [10, 10];
1182                 Array a2 = a;
1183
1184                 return (a2.Length == 100) ? 0 : 1;
1185         }
1186
1187         public static int test_0_intrins_runtimehelpers_offset_to_string_data () {
1188                 int i = RuntimeHelpers.OffsetToStringData;
1189
1190                 return i - i;
1191         }
1192
1193         public static int test_0_intrins_string_setchar () {
1194                 StringBuilder sb = new StringBuilder ("ABC");
1195
1196                 sb [1] = 'D';
1197
1198                 return sb.ToString () == "ADC" ? 0 : 1;
1199         }
1200
1201         public class Bar {
1202                 bool allowLocation = true;
1203         Foo f = new Foo ();
1204         }
1205
1206         public static int test_0_regress_78990_unaligned_structs () {
1207                 new Bar ();
1208
1209                 return 0;
1210         }
1211
1212         public static unsafe int test_97_negative_index () {
1213                 char[] arr = new char[] {'a', 'b'};
1214                 fixed (char *p = arr) {
1215                         char *i = p + 2;
1216                         char a = i[-2];
1217                         return a;
1218                 }
1219         }
1220
1221         /* bug #82281 */
1222         public static int test_0_unsigned_right_shift_imm0 () {
1223                 uint temp = 0;
1224                 byte[] data = new byte[256];
1225                 for (int i = 0; i < 1; i ++)
1226                         temp = (uint)(data[temp >> 24] | data[temp >> 0]);
1227                 return 0;
1228         }
1229
1230         class Foo2 {
1231                 public virtual int foo () {
1232                         return 0;
1233                 }
1234         }
1235
1236         sealed class Bar2 : Foo2 {
1237                 public override int foo () {
1238                         return 0;
1239                 }
1240         }
1241
1242         public static int test_0_abcrem_check_this_removal () {
1243                 Bar2 b = new Bar2 ();
1244
1245                 // The check_this generated here by the JIT should be removed
1246                 b.foo ();
1247
1248                 return 0;
1249         }
1250
1251         static int invoke_twice (Bar2 b) {
1252                 b.foo ();
1253                 // The check_this generated here by the JIT should be removed
1254                 b.foo ();
1255
1256                 return 0;
1257         }
1258
1259         public static int test_0_abcrem_check_this_removal2 () {
1260                 Bar2 b = new Bar2 ();
1261
1262                 invoke_twice (b);
1263
1264                 return 0;
1265         }
1266
1267         /* #346563 */
1268         public static int test_0_array_access_64_bit () {
1269                 int[] arr2 = new int [10];
1270                 for (int i = 0; i < 10; ++i)
1271                         arr2 [i] = i;
1272                 string s = "ABCDEFGH";
1273
1274                 byte[] arr = new byte [4];
1275                 arr [0] = 252;
1276                 arr [1] = 255;
1277                 arr [2] = 255;
1278                 arr [3] = 255;
1279
1280                 int len = arr [0] | (arr [1] << 8) | (arr [2] << 16) | (arr [3] << 24);
1281                 int len2 = - (len + 2);
1282
1283                 // Test array and string access with a 32 bit value whose upper 32 bits are
1284                 // undefined
1285                 // len2 = 3
1286                 if (arr2 [len2] != 2)
1287                         return 1;
1288                 if (s [len2] != 'C')
1289                         return 2;
1290                 return 0;
1291         }
1292
1293         public static float return_float () {
1294                 return 1.4e-45f;
1295         }
1296
1297         public static int test_0_float_return_spill () {
1298                 // The return value of return_float () is spilled because of the
1299                 // boxing call
1300                 object o = return_float ();
1301                 float f = return_float ();
1302                 return (float)o == f ? 0 : 1;
1303         }
1304
1305         class R4Holder {
1306                 public static float pi = 3.14f;
1307
1308                 public float float_field;
1309         }
1310
1311         public static int test_0_ldsfld_soft_float () {
1312                 if (R4Holder.pi == 3.14f)
1313                         return 0;
1314                 else
1315                         return 1;
1316         }
1317
1318         public static int test_0_ldfld_stfld_soft_float () {
1319                 R4Holder h = new R4Holder ();
1320                 h.float_field = 3.14f;
1321
1322                 if (h.float_field == 3.14f)
1323                         return 0;
1324                 else
1325                         return 1;
1326         }
1327
1328         class R4HolderRemote : MarshalByRefObject {
1329                 public static float pi = 3.14f;
1330
1331                 public float float_field;
1332         }
1333
1334         public static int test_0_ldfld_stfld_soft_float_remote () {
1335                 R4HolderRemote h = new R4HolderRemote ();
1336                 h.float_field = 3.14f;
1337
1338                 if (h.float_field == 3.14f)
1339                         return 0;
1340                 else
1341                         return 1;
1342         }
1343
1344         public static int test_0_locals_soft_float () {
1345                 float f = 0.0f;
1346
1347                 f = 3.14f;
1348
1349                 if (f == 3.14f)
1350                         return 0;
1351                 else
1352                         return 1;
1353         }
1354
1355         struct AStruct2 {
1356                 public int i;
1357                 public int j;
1358         }
1359
1360         static float pass_vtype_return_float (AStruct2 s) {
1361                 return s.i + s.j == 6 ? 1.0f : -1.0f;
1362         }
1363
1364         public static int test_0_vtype_arg_soft_float () {
1365                 return pass_vtype_return_float (new AStruct2 () { i = 2, j = 4 }) > 0.0 ? 0 : 1;
1366         }
1367
1368         static int range_check_strlen (int i, string s) {
1369                 if (i < 0 || i > s.Length)
1370                         return 1;
1371                 else
1372                         return 0;
1373         }
1374
1375         public static int test_0_range_check_opt () {
1376                 if (range_check_strlen (0, "A") != 0)
1377                         return 1;
1378                 if (range_check_strlen (1, "A") != 0)
1379                         return 2;
1380                 if (range_check_strlen (2, "A") != 1)
1381                         return 3;
1382                 if (range_check_strlen (-100, "A") != 1)
1383                         return 4;
1384                 return 0;
1385         }
1386
1387         static int test_0_array_get_set_soft_float () {
1388                 float[,] arr = new float [2, 2];
1389                 arr [0, 0] = 256f;
1390                 return arr [0, 0] == 256f ? 0 : 1;
1391         }
1392
1393         //repro for #506915
1394         struct Bug506915 { public int val; }
1395         static int test_2_ldobj_stobj_optization ()
1396         {
1397                 int i = 99;
1398                 var a = new Bug506915 ();
1399                 var b = new Bug506915 ();
1400                 if (i.GetHashCode () == 99)
1401                         i = 44;
1402                 var array = new Bug506915 [2];
1403                 array [0].val = 2;
1404                 array [1] = (i == 0) ? a : array [0];
1405
1406                 return array [1].val;
1407         }
1408
1409         /* mcs can't compile this (#646744) */
1410 #if FALSE
1411         static void InitMe (out Gamma noMercyWithTheStack) {
1412                 noMercyWithTheStack = new Gamma ();
1413         }
1414
1415         static int FunNoInline () {
1416                 int x = 99;
1417                 if (x > 344 && x < 22)
1418                         return 333;
1419                 return x;
1420         }
1421
1422         static float DoNothingButDontInline (float a, int b) {
1423                 if (b > 0)
1424                         return a;
1425                 else if (b < 0 && b > 10)
1426                         return 444.0f;
1427                 return a;
1428         }
1429
1430         /*
1431          * The local register allocator emits loadr8_membase and storer8_membase
1432          * to do spilling. This code is generated after mono_arch_lowering_pass so
1433          * mono_arch_output_basic_block must know how to deal with big offsets.
1434          * This only happens because the call in middle forces the temp for "(float)obj"
1435          * to be spilled.
1436         */
1437         public static int test_0_float_load_and_store_with_big_offset ()
1438         {
1439                 object obj = 1.0f;
1440                 Gamma noMercyWithTheStack;
1441                 float res;
1442
1443                 InitMe (out noMercyWithTheStack);
1444
1445                 res = DoNothingButDontInline ((float)obj, FunNoInline ());
1446
1447                 if (!(res == 1.0f))
1448                         return 1;
1449                 return 0;
1450         }
1451 #endif
1452
1453         struct VTypePhi {
1454                 public int i;
1455         }
1456
1457         static int vtype_phi (VTypePhi v1, VTypePhi v2, bool first) {
1458                 VTypePhi v = first ? v1 : v2;
1459
1460                 return v.i;
1461         }
1462
1463         static int test_0_vtype_phi ()
1464         {
1465                 VTypePhi v1 = new VTypePhi () { i = 1 };
1466                 VTypePhi v2 = new VTypePhi () { i = 2 };
1467
1468                 if (vtype_phi (v1, v2, true) != 1)
1469                         return 1;
1470                 if (vtype_phi (v1, v2, false) != 2)
1471                         return 2;
1472
1473                 return 0;
1474         }
1475
1476         [MethodImplAttribute (MethodImplOptions.NoInlining)]
1477         static void UseValue (int index)
1478         {
1479         }
1480
1481         [MethodImplAttribute (MethodImplOptions.NoInlining)]
1482         static bool IsFalse ()
1483         {
1484                 return false;
1485         }
1486
1487         static int test_0_llvm_moving_faulting_loads ()
1488         {
1489                 int[] indexes = null;
1490
1491                 if (IsFalse ()) {
1492                         indexes = new int[0];
1493                 }
1494
1495                 while (IsFalse ()) {
1496                         UseValue (indexes[0]);
1497                         UseValue (indexes[0]);
1498                 }
1499
1500                 return 0;
1501         }
1502
1503 }
1504