mono/mini/objects.cs

   1 using System;
   2 using System.Text;
   3 using System.Reflection;
   4 using System.Collections.Generic;
   5 using System.Runtime.InteropServices;
   6 using System.Runtime.CompilerServices;
   7
   8 /*
   9  * Regression tests for the mono JIT.
  10  *
  11  * Each test needs to be of the form:
  12  *
  13  * static int test_<result>_<name> ();
  14  *
  15  * where <result> is an integer (the value that needs to be returned by
  16  * the method to make it pass.
  17  * <name> is a user-displayed name used to identify the test.
  18  *
  19  * The tests can be driven in two ways:
  20  * *) running the program directly: Main() uses reflection to find and invoke
  21  *      the test methods (this is useful mostly to check that the tests are correct)
  22  * *) with the --regression switch of the jit (this is the preferred way since
  23  *      all the tests will be run with optimizations on and off)
  24  *
  25  * The reflection logic could be moved to a .dll since we need at least another
  26  * regression test file written in IL code to have better control on how
  27  * the IL code looks.
  28  */
  29
  30 #if __MOBILE__
  31 namespace ObjectTests
  32 {
  33 #endif
  34
  35 struct Simple {
  36         public int a;
  37         public byte b;
  38         public short c;
  39         public long d;
  40 }
  41
  42 struct Small {
  43         public byte b1;
  44         public byte b2;
  45 }
  46
  47 // Size=2, Align=1
  48 struct Foo {
  49         bool b1;
  50         bool b2;
  51 }
  52
  53 struct Large {
  54         int one;
  55         int two;
  56         long three;
  57         long four;
  58         int five;
  59         long six;
  60         int seven;
  61         long eight;
  62         long nine;
  63         long ten;
  64
  65         public void populate ()
  66         {
  67                 one = 1; two = 2;
  68                 three = 3; four = 4;
  69                 five = 5; six = 6;
  70                 seven = 7; eight = 8;
  71                 nine = 9; ten = 10;
  72         }
  73         public bool check ()
  74         {
  75                 return one == 1  && two == 2  &&
  76                         three == 3  && four == 4  &&
  77                         five == 5  && six == 6  &&
  78                         seven == 7  && eight == 8  &&
  79                         nine == 9  && ten == 10;
  80         }
  81 }
  82
  83 class Sample {
  84         public int a;
  85         public Sample (int v) {
  86                 a = v;
  87         }
  88 }
  89
  90 [StructLayout ( LayoutKind.Explicit )]
  91 struct StructWithBigOffsets {
  92                 [ FieldOffset(10000) ] public byte b;
  93                 [ FieldOffset(10001) ] public sbyte sb;
  94                 [ FieldOffset(11000) ] public short s;
  95                 [ FieldOffset(11002) ] public ushort us;
  96                 [ FieldOffset(12000) ] public uint i;
  97                 [ FieldOffset(12004) ] public int si;
  98                 [ FieldOffset(13000) ] public long l;
  99                 [ FieldOffset(14000) ] public float f;
 100                 [ FieldOffset(15000) ] public double d;
 101 }
 102
 103 enum SampleEnum {
 104         A,
 105         B,
 106         C
 107 }
 108
 109 struct Alpha {
 110         public long a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v;
 111 }
 112
 113 struct Beta {
 114         public Alpha a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v;
 115 }
 116
 117 struct Gamma {
 118         public Beta a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v;
 119 }
 120
 121 class Tests {
 122
 123 #if !__MOBILE__
 124         public static int Main (string[] args) {
 125                 return TestDriver.RunTests (typeof (Tests), args);
 126         }
 127 #endif
 128
 129         public static int test_0_return () {
 130                 Simple s;
 131                 s.a = 1;
 132                 s.b = 2;
 133                 s.c = (short)(s.a + s.b);
 134                 s.d = 4;
 135                 return s.a - 1;
 136         }
 137
 138         public static int test_0_string_access () {
 139                 string s = "Hello";
 140                 if (s [1] != 'e')
 141                         return 1;
 142                 return 0;
 143         }
 144
 145         public static int test_0_string_virtual_call () {
 146                 string s = "Hello";
 147                 string s2 = s.ToString ();
 148                 if (s2 [1] != 'e')
 149                         return 1;
 150                 return 0;
 151         }
 152
 153         public static int test_0_iface_call () {
 154                 string s = "Hello";
 155                 object o = ((ICloneable)s).Clone ();
 156                 return 0;
 157         }
 158
 159         public static int test_5_newobj () {
 160                 Sample s = new Sample (5);
 161                 return s.a;
 162         }
 163
 164         public static int test_4_box () {
 165                 object obj = 4;
 166                 return (int)obj;
 167         }
 168
 169         public static int test_0_enum_unbox () {
 170                 SampleEnum x = SampleEnum.A;
 171                 object o = x;
 172
 173                 int res = 1;
 174
 175                 res = (int)o;
 176
 177                 return res;
 178         }
 179
 180         static Simple get_simple (int v) {
 181                 Simple r = new Simple ();
 182                 r.a = v;
 183                 r.b = (byte)(v + 1);
 184                 r.c = (short)(v + 2);
 185                 r.d = v + 3;
 186
 187                 return r;
 188         }
 189
 190         public static int test_3_return_struct () {
 191                 Simple v = get_simple (1);
 192
 193                 if (v.a != 1)
 194                         return 0;
 195                 if (v.b != 2)
 196                         return 0;
 197                 if (v.c != 3)
 198                         return 0;
 199                 if (v.d != 4)
 200                         return 0;
 201                 return 3;
 202         }
 203
 204         public virtual Simple v_get_simple (int v)
 205         {
 206                 return get_simple (v);
 207         }
 208
 209         public static int test_2_return_struct_virtual () {
 210                 Tests t = new Tests ();
 211                 Simple v = t.v_get_simple (2);
 212
 213                 if (v.a != 2)
 214                         return 0;
 215                 if (v.b != 3)
 216                         return 0;
 217                 if (v.c != 4)
 218                         return 0;
 219                 if (v.d != 5)
 220                         return 0;
 221                 return 2;
 222         }
 223
 224         static int receive_simple (int a, Simple v, int b) {
 225                 if (v.a != 1)
 226                         return 1;
 227                 if (v.b != 2)
 228                         return 2;
 229                 if (v.c != 3)
 230                         return 3;
 231                 if (v.d != 4)
 232                         return 4;
 233                 if (a != 7)
 234                         return 5;
 235                 if (b != 9)
 236                         return 6;
 237                 return 0;
 238         }
 239
 240         public static int test_5_pass_struct () {
 241                 Simple v = get_simple (1);
 242                 if (receive_simple (7, v, 9) != 0)
 243                         return 0;
 244                 if (receive_simple (7, get_simple (1), 9) != 0)
 245                         return 1;
 246                 return 5;
 247         }
 248
 249         static Simple s_v;
 250         public static int test_5_pass_static_struct () {
 251                 s_v = get_simple (1);
 252                 if (receive_simple (7, s_v, 9) != 0)
 253                         return 0;
 254                 return 5;
 255         }
 256
 257         // Test alignment of small structs
 258
 259         static Small get_small (byte v) {
 260                 Small r = new Small ();
 261
 262                 r.b1 = v;
 263                 r.b2 = (byte)(v + 1);
 264
 265                 return r;
 266         }
 267
 268         static Small return_small (Small s) {
 269                 return s;
 270         }
 271
 272         static int receive_small (int a, 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         static int receive_small_sparc_many_args (int a, int a2, int a3, int a4, int a5, int a6, Small v, int b) {
 281                 if (v.b1 != 1)
 282                         return 1;
 283                 if (v.b2 != 2)
 284                         return 2;
 285                 return 0;
 286         }
 287
 288         public static int test_5_pass_small_struct () {
 289                 Small v = get_small (1);
 290                 if (receive_small (7, v, 9) != 0)
 291                         return 0;
 292                 if (receive_small (7, get_small (1), 9) != 0)
 293                         return 1;
 294                 if (receive_small_sparc_many_args (1, 2, 3, 4, 5, 6, v, 9) != 0)
 295                         return 2;
 296                 v = return_small (v);
 297                 if (v.b1 != 1)
 298                         return 3;
 299                 if (v.b2 != 2)
 300                         return 4;
 301                 return 5;
 302         }
 303
 304         // 64-bits, 32-bit aligned
 305         struct struct1 {
 306                 public int      a;
 307                 public int      b;
 308         };
 309
 310         static int check_struct1(struct1 x) {
 311                 if (x.a != 1)
 312                         return 1;
 313                 if (x.b != 2)
 314                         return 2;
 315                 return 0;
 316         }
 317
 318         static int pass_struct1(int a, int b, struct1 x) {
 319                 if (a != 3)
 320                         return 3;
 321                 if (b != 4)
 322                         return 4;
 323                 return check_struct1(x);
 324         }
 325
 326         static int pass_struct1(int a, struct1 x) {
 327                 if (a != 3)
 328                         return 3;
 329                 return check_struct1(x);
 330         }
 331
 332         static int pass_struct1(struct1 x) {
 333                 return check_struct1(x);
 334         }
 335
 336         public static int test_0_struct1_args () {
 337                 int r;
 338                 struct1 x;
 339
 340                 x.a = 1;
 341                 x.b = 2;
 342                 if ((r = check_struct1(x)) != 0)
 343                         return r;
 344                 if ((r = pass_struct1(x)) != 0)
 345                         return r + 10;
 346                 if ((r = pass_struct1(3, x)) != 0)
 347                         return r + 20;
 348                 if ((r = pass_struct1(3, 4, x)) != 0)
 349                         return r + 30;
 350                 return 0;
 351         }
 352
 353         // 64-bits, 64-bit aligned
 354         struct struct2 {
 355                 public long     a;
 356         };
 357
 358         static int check_struct2(struct2 x) {
 359                 if (x.a != 1)
 360                         return 1;
 361                 return 0;
 362         }
 363
 364         static int pass_struct2(int a, int b, int c, struct2 x) {
 365                 if (a != 3)
 366                         return 3;
 367                 if (b != 4)
 368                         return 4;
 369                 if (c != 5)
 370                         return 5;
 371                 return check_struct2(x);
 372         }
 373
 374         static int pass_struct2(int a, int b, struct2 x) {
 375                 if (a != 3)
 376                         return 3;
 377                 if (b != 4)
 378                         return 4;
 379                 return check_struct2(x);
 380         }
 381
 382         static int pass_struct2(int a, struct2 x) {
 383                 if (a != 3)
 384                         return 3;
 385                 return check_struct2(x);
 386         }
 387
 388         static int pass_struct2(struct2 x) {
 389                 return check_struct2(x);
 390         }
 391
 392         public static int test_0_struct2_args () {
 393                 int r;
 394                 struct2 x;
 395
 396                 x.a = 1;
 397                 if ((r = check_struct2(x)) != 0)
 398                         return r;
 399                 if ((r = pass_struct2(x)) != 0)
 400                         return r + 10;
 401                 if ((r = pass_struct2(3, x)) != 0)
 402                         return r + 20;
 403                 if ((r = pass_struct2(3, 4, x)) != 0)
 404                         return r + 30;
 405                 if ((r = pass_struct2(3, 4, 5, x)) != 0)
 406                         return r + 40;
 407                 return 0;
 408         }
 409
 410         // 128 bits
 411         struct Struct3 {
 412                 public long i, j, k, l;
 413         }
 414
 415         static int pass_struct3 (int i, int j, int k, int l, int m, int n, int o, int p, Struct3 s, int q) {
 416                 if (s.i + s.j + s.k + s.l != 10)
 417                         return 1;
 418                 else
 419                         return 0;
 420         }
 421
 422         public static int test_0_struct3_args () {
 423                 Struct3 s = new Struct3 ();
 424                 s.i = 1;
 425                 s.j = 2;
 426                 s.k = 3;
 427                 s.l = 4;
 428
 429                 return pass_struct3 (1, 2, 3, 4, 5, 6, 7, 8, s, 9);
 430         }
 431
 432         // Struct with unaligned size on 64 bit machines
 433         struct Struct4 {
 434         public int i, j, k, l, m;
 435                 public int i1, i2, i3, i4, i5, i6;
 436         }
 437
 438         static int pass_struct4 (Struct4 s) {
 439                 if (s.i + s.j + s.k + s.l + s.m != 15)
 440                         return 1;
 441                 else
 442                         return 0;
 443         }
 444
 445         public static int test_0_struct4_args () {
 446                 Struct4 s = new Struct4 ();
 447                 s.i = 1;
 448                 s.j = 2;
 449                 s.k = 3;
 450                 s.l = 4;
 451                 s.m = 5;
 452
 453                 return pass_struct4 (s);
 454         }
 455
 456
 457
 458         struct AStruct {
 459                 public int i;
 460
 461                 public AStruct (int i) {
 462                         this.i = i;
 463                 }
 464
 465                 public override int GetHashCode () {
 466                         return i;
 467                 }
 468         }
 469
 470         // Test that vtypes are unboxed during a virtual call
 471         public static int test_44_unbox_trampoline () {
 472                 AStruct s = new AStruct (44);
 473                 object o = s;
 474                 return o.GetHashCode ();
 475         }
 476
 477         public static int test_0_unbox_trampoline2 () {
 478                 int i = 12;
 479                 object o = i;
 480
 481                 if (i.ToString () != "12")
 482                         return 1;
 483                 if (((Int32)o).ToString () != "12")
 484                         return 2;
 485                 if (o.ToString () != "12")
 486                         return 3;
 487                 return 0;
 488         }
 489
 490         // Test fields with big offsets
 491         public static int test_0_fields_with_big_offsets () {
 492                 StructWithBigOffsets s = new StructWithBigOffsets ();
 493                 StructWithBigOffsets s2 = new StructWithBigOffsets ();
 494
 495                 s.b = 0xde;
 496                 s.sb = 0xe;
 497                 s.s = 0x12de;
 498                 s.us = 0x12da;
 499                 s.i = 0xdeadbeef;
 500                 s.si = 0xcafe;
 501                 s.l = 0xcafebabe;
 502                 s.f = 3.14F;
 503                 s.d = 3.14;
 504
 505                 s2.b = s.b;
 506                 s2.sb = s.sb;
 507                 s2.s = s.s;
 508                 s2.us = s.us;
 509                 s2.i = s.i;
 510                 s2.si = s.si;
 511                 s2.l = s.l;
 512                 s2.f = s.f;
 513                 s2.d = s.d;
 514
 515                 if (s2.b != 0xde)
 516                         return 1;
 517                 if (s2.s != 0x12de)
 518                         return 2;
 519                 if (s2.i != 0xdeadbeef)
 520                         return 3;
 521                 if (s2.l != 0xcafebabe)
 522                         return 4;
 523                 if (s2.f != 3.14F)
 524                         return 5;
 525                 if (s2.d != 3.14)
 526                         return 6;
 527                 if (s2.sb != 0xe)
 528                         return 7;
 529                 if (s2.us != 0x12da)
 530                         return 9;
 531                 if (s2.si != 0xcafe)
 532                         return 10;
 533
 534                 return 0;
 535         }
 536
 537         class TestRegA {
 538
 539                 long buf_start;
 540                 int buf_length, buf_offset;
 541
 542                 public TestRegA () {
 543                         buf_start = 0;
 544                         buf_length = 0;
 545                         buf_offset = 0;
 546                 }
 547
 548                 public long Seek (long position) {
 549                         long pos = position;
 550                         /* interaction between the register allocator and
 551                          * allocating arguments to registers */
 552                         if (pos >= buf_start && pos <= buf_start + buf_length) {
 553                                 buf_offset = (int) (pos - buf_start);
 554                                 return pos;
 555                         }
 556                         return buf_start;
 557                 }
 558
 559         }
 560
 561         public static int test_0_seektest () {
 562                 TestRegA t = new TestRegA ();
 563                 return (int)t.Seek (0);
 564         }
 565
 566         class Super : ICloneable {
 567                 public virtual object Clone () {
 568                         return null;
 569                 }
 570         }
 571         class Duper: Super {
 572         }
 573
 574         public static int test_0_null_cast () {
 575                 object o = null;
 576
 577                 Super s = (Super)o;
 578
 579                 return 0;
 580         }
 581
 582         public static int test_0_super_cast () {
 583                 Duper d = new Duper ();
 584                 Super sup = d;
 585                 Object o = d;
 586
 587                 if (!(o is Super))
 588                         return 1;
 589                 try {
 590                         d = (Duper)sup;
 591                 } catch {
 592                         return 2;
 593                 }
 594                 if (!(d is Object))
 595                         return 3;
 596                 try {
 597                         d = (Duper)(object)sup;
 598                 } catch {
 599                         return 4;
 600                 }
 601                 return 0;
 602         }
 603
 604         public static int test_0_super_cast_array () {
 605                 Duper[] d = new Duper [0];
 606                 Super[] sup = d;
 607                 Object[] o = d;
 608
 609                 if (!(o is Super[]))
 610                         return 1;
 611                 try {
 612                         d = (Duper[])sup;
 613                 } catch {
 614                         return 2;
 615                 }
 616                 if (!(d is Object[]))
 617                         return 3;
 618                 try {
 619                         d = (Duper[])(object[])sup;
 620                 } catch {
 621                         return 4;
 622                 }
 623                 return 0;
 624         }
 625
 626         public static int test_0_multi_array_cast () {
 627                 Duper[,] d = new Duper [1, 1];
 628                 object[,] o = d;
 629
 630                 try {
 631                         o [0, 0] = new Super ();
 632                         return 1;
 633                 }
 634                 catch (ArrayTypeMismatchException) {
 635                 }
 636
 637                 return 0;
 638         }
 639
 640         public static int test_0_vector_array_cast () {
 641                 Array arr1 = Array.CreateInstance (typeof (int), new int[] {1}, new int[] {0});
 642                 Array arr2 = Array.CreateInstance (typeof (int), new int[] {1}, new int[] {10});
 643                 Array arr5 = Array.CreateInstance (typeof (string), new int[] {1}, new int[] {10});
 644
 645                 if (arr1.GetType () != typeof (int[]))
 646                         return 1;
 647
 648                 if (arr2.GetType () == typeof (int[]))
 649                         return 2;
 650
 651                 int[] b;
 652
 653                 b = (int[])arr1;
 654
 655                 try {
 656                         b = (int[])arr2;
 657                         return 3;
 658                 }
 659                 catch (InvalidCastException) {
 660                 }
 661
 662                 if (arr2 is int[])
 663                         return 4;
 664                 var as_object_arr = arr5 as object [];
 665                 if (as_object_arr != null)
 666                         return 5;
 667
 668                 int [,] [] arr3 = new int [1, 1] [];
 669                 object o = arr3;
 670                 int [,] [] arr4 = (int [,] [])o;
 671
 672                 return 0;
 673         }
 674
 675         public static int test_0_enum_array_cast () {
 676                 TypeCode[] tc = new TypeCode [0];
 677                 object[] oa;
 678                 ValueType[] vta;
 679                 int[] inta;
 680                 Array a = tc;
 681                 bool ok;
 682
 683                 if (a is object[])
 684                         return 1;
 685                 if (a is ValueType[])
 686                         return 2;
 687                 if (a is Enum[])
 688                         return 3;
 689                 try {
 690                         ok = false;
 691                         oa = (object[])a;
 692                 } catch {
 693                         ok = true;
 694                 }
 695                 if (!ok)
 696                         return 4;
 697                 try {
 698                         ok = false;
 699                         vta = (ValueType[])a;
 700                 } catch {
 701                         ok = true;
 702                 }
 703                 if (!ok)
 704                         return 5;
 705                 try {
 706                         ok = true;
 707                         inta = (int[])a;
 708                 } catch {
 709                         ok = false;
 710                 }
 711                 if (!ok)
 712                         return 6;
 713                 return 0;
 714         }
 715
 716         public static int test_0_more_cast_corner_cases () {
 717                 ValueType[] vta = new ValueType [0];
 718                 Enum[] ea = new Enum [0];
 719                 Array a = vta;
 720                 object[] oa;
 721                 bool ok;
 722
 723                 if (!(a is object[]))
 724                         return 1;
 725                 if (!(a is ValueType[]))
 726                         return 2;
 727                 if (a is Enum[])
 728                         return 3;
 729                 a = ea;
 730                 if (!(a is object[]))
 731                         return 4;
 732                 if (!(a is ValueType[]))
 733                         return 5;
 734                 if (!(a is Enum[]))
 735                         return 6;
 736
 737                 try {
 738                         ok = true;
 739                         oa = (object[])a;
 740                 } catch {
 741                         ok = false;
 742                 }
 743                 if (!ok)
 744                         return 7;
 745
 746                 try {
 747                         ok = true;
 748                         oa = (Enum[])a;
 749                 } catch {
 750                         ok = false;
 751                 }
 752                 if (!ok)
 753                         return 8;
 754
 755                 try {
 756                         ok = true;
 757                         oa = (ValueType[])a;
 758                 } catch {
 759                         ok = false;
 760                 }
 761                 if (!ok)
 762                         return 9;
 763
 764                 a = vta;
 765                 try {
 766                         ok = true;
 767                         oa = (object[])a;
 768                 } catch {
 769                         ok = false;
 770                 }
 771                 if (!ok)
 772                         return 10;
 773
 774                 try {
 775                         ok = true;
 776                         oa = (ValueType[])a;
 777                 } catch {
 778                         ok = false;
 779                 }
 780                 if (!ok)
 781                         return 11;
 782
 783                 try {
 784                         ok = false;
 785                         vta = (Enum[])a;
 786                 } catch {
 787                         ok = true;
 788                 }
 789                 if (!ok)
 790                         return 12;
 791
 792                 object arr = new int [10];
 793                 if (arr is IList<int?>)
 794                         return 13;
 795
 796                 return 0;
 797         }
 798
 799         public static int test_0_cast_iface_array () {
 800                 object o = new ICloneable [0];
 801                 object o2 = new Duper [0];
 802                 object t;
 803                 bool ok;
 804
 805                 if (!(o is object[]))
 806                         return 1;
 807                 if (!(o2 is ICloneable[]))
 808                         return 2;
 809
 810                 try {
 811                         ok = true;
 812                         t = (object[])o;
 813                 } catch {
 814                         ok = false;
 815                 }
 816                 if (!ok)
 817                         return 3;
 818
 819                 try {
 820                         ok = true;
 821                         t = (ICloneable[])o2;
 822                 } catch {
 823                         ok = false;
 824                 }
 825                 if (!ok)
 826                         return 4;
 827
 828                 try {
 829                         ok = true;
 830                         t = (ICloneable[])o;
 831                 } catch {
 832                         ok = false;
 833                 }
 834                 if (!ok)
 835                         return 5;
 836
 837                 if (!(o is ICloneable[]))
 838                         return 6;
 839
 840                 /* add tests for interfaces that 'inherit' interfaces */
 841                 return 0;
 842         }
 843
 844         private static int[] daysmonthleap = { 0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
 845
 846         private static int AbsoluteDays (int year, int month, int day)
 847         {
 848                 int temp = 0, m = 1;
 849                 int[] days = daysmonthleap;
 850                 while (m < month)
 851                         temp += days[m++];
 852                 return ((day-1) + temp + (365* (year-1)) + ((year-1)/4) - ((year-1)/100) + ((year-1)/400));
 853         }
 854
 855         public static int test_719162_complex_div () {
 856                 int adays = AbsoluteDays (1970, 1, 1);
 857                 return adays;
 858         }
 859
 860         delegate int GetIntDel ();
 861
 862         static int return4 () {
 863                 return 4;
 864         }
 865
 866         int return5 () {
 867                 return 5;
 868         }
 869
 870         public static int test_2_static_delegate () {
 871                 GetIntDel del = new GetIntDel (return4);
 872                 int v = del ();
 873                 if (v != 4)
 874                         return 0;
 875                 return 2;
 876         }
 877
 878         public static int test_2_instance_delegate () {
 879                 Tests t = new Tests ();
 880                 GetIntDel del = new GetIntDel (t.return5);
 881                 int v = del ();
 882                 if (v != 5)
 883                         return 0;
 884                 return 2;
 885         }
 886
 887         class InstanceDelegateTest {
 888                 public int a;
 889
 890                 public int return_field () {
 891                         return a;
 892                 }
 893         }
 894
 895         public static int test_2_instance_delegate_with_field () {
 896                 InstanceDelegateTest t = new InstanceDelegateTest () { a = 1337 };
 897                 GetIntDel del = new GetIntDel (t.return_field);
 898                 int v = del ();
 899                 if (v != 1337)
 900                         return 0;
 901                 return 2;
 902         }
 903
 904         interface IFaceVirtualDel {
 905                 int return_field ();
 906         }
 907
 908         struct VtypeVirtualDelStruct : IFaceVirtualDel {
 909                 public int f;
 910                 public int return_field_nonvirt () {
 911                         return f;
 912                 }
 913                 public int return_field () {
 914                         return f;
 915                 }
 916         }
 917
 918         public static int test_42_vtype_delegate () {
 919                 var s = new VtypeVirtualDelStruct () { f = 42 };
 920                 Func<int> f = s.return_field_nonvirt;
 921                 return f ();
 922         }
 923
 924         public static int test_42_vtype_virtual_delegate () {
 925                 IFaceVirtualDel s = new VtypeVirtualDelStruct () { f = 42 };
 926                 Func<int> f = s.return_field;
 927                 return f ();
 928         }
 929
 930         public static int test_1_store_decimal () {
 931                 decimal[,] a = {{1}};
 932
 933                 if (a[0,0] != 1m)
 934                         return 0;
 935                 return 1;
 936         }
 937
 938         public static int test_2_intptr_stobj () {
 939                 System.IntPtr [] arr = { new System.IntPtr () };
 940
 941                 if (arr [0] != (System.IntPtr)0)
 942                         return 1;
 943                 return 2;
 944         }
 945
 946         static int llmult (int a, int b, int c, int d) {
 947                 return a + b + c + d;
 948         }
 949
 950         /*
 951          * Test that evaluation of complex arguments does not overwrite the
 952          * arguments already in outgoing registers.
 953          */
 954         public static int test_155_regalloc () {
 955                 int a = 10;
 956                 int b = 10;
 957
 958                 int c = 0;
 959                 int d = 0;
 960                 int[] arr = new int [5];
 961
 962                 return llmult (arr [c + d], 150, 5, 0);
 963         }
 964
 965         static bool large_struct_test (Large a, Large b, Large c, Large d)
 966         {
 967                 if (!a.check ()) return false;
 968                 if (!b.check ()) return false;
 969                 if (!c.check ()) return false;
 970                 if (!d.check ()) return false;
 971                 return true;
 972         }
 973
 974         public static int test_2_large_struct_pass ()
 975         {
 976                 Large a, b, c, d;
 977                 a = new Large ();
 978                 b = new Large ();
 979                 c = new Large ();
 980                 d = new Large ();
 981                 a.populate ();
 982                 b.populate ();
 983                 c.populate ();
 984                 d.populate ();
 985                 if (large_struct_test (a, b, c, d))
 986                         return 2;
 987                 return 0;
 988         }
 989
 990         public static unsafe int test_0_pin_string () {
 991                 string x = "xxx";
 992                 fixed (char *c = x) {
 993                         if (*c != 'x')
 994                                 return 1;
 995                 }
 996                 return 0;
 997         }
 998
 999         public static int my_flags;
1000         public static int test_0_and_cmp_static ()
1001         {
1002
1003                 /* various forms of test [mem], imm */
1004
1005                 my_flags = 0x01020304;
1006
1007                 if ((my_flags & 0x01020304) == 0)
1008                         return 1;
1009
1010                 if ((my_flags & 0x00000304) == 0)
1011                         return 2;
1012
1013                 if ((my_flags & 0x00000004) == 0)
1014                         return 3;
1015
1016                 if ((my_flags & 0x00000300) == 0)
1017                         return 4;
1018
1019                 if ((my_flags & 0x00020000) == 0)
1020                         return 5;
1021
1022                 if ((my_flags & 0x01000000) == 0)
1023                         return 6;
1024
1025                 return 0;
1026         }
1027
1028         static byte b;
1029         public static int test_0_byte_compares ()
1030         {
1031                 b = 0xff;
1032                 if (b == -1)
1033                         return 1;
1034                 b = 0;
1035                 if (!(b < System.Byte.MaxValue))
1036                         return 2;
1037
1038                 if (!(b <= System.Byte.MaxValue))
1039                         return 3;
1040
1041                 return 0;
1042         }
1043
1044         static Nullable<bool> s_nullb;
1045         static AStruct s_struct1;
1046
1047         /* test if VES uses correct sizes for value type write to static field */
1048         public static int test_0_static_nullable_bool () {
1049                 s_struct1 = new AStruct (0x1337dead);
1050                 s_nullb = true;
1051                 /* make sure that the write to s_nullb didn't smash the value after it */
1052                 if (s_struct1.i != 0x1337dead)
1053                         return 2;
1054                 return 0;
1055         }
1056
1057         public static int test_71_long_shift_right () {
1058                 ulong value = 38654838087;
1059                 int x = 0;
1060                 byte [] buffer = new byte [1];
1061                 buffer [x] = ((byte)(value >> x));
1062                 return buffer [x];
1063         }
1064
1065         static long x;
1066         public static int test_0_addsub_mem ()
1067         {
1068                 x = 0;
1069                 x += 5;
1070
1071                 if (x != 5)
1072                         return 1;
1073
1074                 x -= 10;
1075
1076                 if (x != -5)
1077                         return 2;
1078
1079                 return 0;
1080         }
1081
1082         static ulong y;
1083         public static int test_0_sh32_mem ()
1084         {
1085                 y = 0x0102130405060708;
1086                 y >>= 32;
1087
1088                 if (y != 0x01021304)
1089                         return 1;
1090
1091                 y = 0x0102130405060708;
1092                 y <<= 32;
1093
1094                 if (y != 0x0506070800000000)
1095                         return 2;
1096
1097                 x = 0x0102130405060708;
1098                 x <<= 32;
1099
1100                 if (x != 0x0506070800000000)
1101                         return 2;
1102
1103                 return 0;
1104         }
1105
1106
1107         static uint dum_de_dum = 1;
1108         public static int test_0_long_arg_opt ()
1109         {
1110                 return Foo (0x1234567887654321, dum_de_dum);
1111         }
1112
1113         static int Foo (ulong x, ulong y)
1114         {
1115                 if (x != 0x1234567887654321)
1116                         return 1;
1117
1118                 if (y != 1)
1119                         return 2;
1120
1121                 return 0;
1122         }
1123
1124         public static int test_0_long_ret_opt ()
1125         {
1126                 ulong x = X ();
1127                 if (x != 0x1234567887654321)
1128                         return 1;
1129                 ulong y = Y ();
1130                 if (y != 1)
1131                         return 2;
1132
1133                 return 0;
1134         }
1135
1136         static ulong X ()
1137         {
1138                 return 0x1234567887654321;
1139         }
1140
1141         static ulong Y ()
1142         {
1143                 return dum_de_dum;
1144         }
1145
1146         /* from bug# 71515 */
1147         static int counter = 0;
1148         static bool WriteStuff () {
1149                 counter = 10;
1150                 return true;
1151         }
1152         public static int test_0_cond_branch_side_effects () {
1153                 counter = 5;
1154                 if (WriteStuff()) {
1155                 }
1156                 if (counter == 10)
1157                         return 0;
1158                 return 1;
1159         }
1160
1161         // bug #74992
1162         public static int arg_only_written (string file_name, int[]
1163 ncells ) {
1164                 if (file_name == null)
1165                         return 1;
1166
1167                 ncells = foo ();
1168                 bar (ncells [0]);
1169
1170                 return 0;
1171         }
1172
1173         public static int[] foo () {
1174                 return new int [3];
1175         }
1176
1177         public static void bar (int i) {
1178         }
1179
1180
1181         public static int test_0_arg_only_written ()
1182         {
1183                 return arg_only_written ("md.in", null);
1184         }
1185
1186         static long position = 0;
1187
1188         public static int test_4_static_inc_long () {
1189
1190                 int count = 4;
1191
1192                 position = 0;
1193
1194                 position += count;
1195
1196                 return (int)position;
1197         }
1198
1199         struct FooStruct {
1200
1201                 public FooStruct (long l) {
1202                 }
1203         }
1204
1205         public static int test_0_calls_opcode_emulation () {
1206                 // Test that emulated opcodes do not clobber arguments already in
1207                 // out registers
1208                 checked {
1209                         long val = 10000;
1210                         new FooStruct (val * 10000);
1211                 }
1212                 return 0;
1213         }
1214
1215         public static int test_0_intrins_string_length () {
1216                 string s = "ABC";
1217
1218                 return (s.Length == 3) ? 0 : 1;
1219         }
1220
1221         public static int test_0_intrins_string_chars () {
1222                 string s = "ABC";
1223
1224                 return (s [0] == 'A' && s [1] == 'B' && s [2] == 'C') ? 0 : 1;
1225         }
1226
1227         public static int test_0_intrins_object_gettype () {
1228                 object o = 1;
1229
1230                 return (o.GetType () == typeof (int)) ? 0 : 1;
1231         }
1232
1233         public static int test_0_intrins_object_gethashcode () {
1234                 object o = new Object ();
1235
1236                 return (o.GetHashCode () == o.GetHashCode ()) ? 0 : 1;
1237         }
1238
1239         class FooClass {
1240         }
1241
1242         public static int test_0_intrins_object_ctor () {
1243                 object o = new FooClass ();
1244
1245                 return (o != null) ? 0 : 1;
1246         }
1247
1248         public static int test_0_intrins_array_rank () {
1249                 int[,] a = new int [10, 10];
1250
1251                 return (a.Rank == 2) ? 0 : 1;
1252         }
1253
1254         public static int test_0_intrins_array_length () {
1255                 int[,] a = new int [10, 10];
1256                 Array a2 = a;
1257
1258                 return (a2.Length == 100) ? 0 : 1;
1259         }
1260
1261         public static int test_0_intrins_runtimehelpers_offset_to_string_data () {
1262                 int i = RuntimeHelpers.OffsetToStringData;
1263
1264                 return i - i;
1265         }
1266
1267         public static int test_0_intrins_string_setchar () {
1268                 StringBuilder sb = new StringBuilder ("ABC");
1269
1270                 sb [1] = 'D';
1271
1272                 return sb.ToString () == "ADC" ? 0 : 1;
1273         }
1274
1275         public class Bar {
1276                 bool allowLocation = true;
1277         Foo f = new Foo ();
1278         }
1279
1280         public static int test_0_regress_78990_unaligned_structs () {
1281                 new Bar ();
1282
1283                 return 0;
1284         }
1285
1286         public static unsafe int test_97_negative_index () {
1287                 char[] arr = new char[] {'a', 'b'};
1288                 fixed (char *p = arr) {
1289                         char *i = p + 2;
1290                         char a = i[-2];
1291                         return a;
1292                 }
1293         }
1294
1295         /* bug #82281 */
1296         public static int test_0_unsigned_right_shift_imm0 () {
1297                 uint temp = 0;
1298                 byte[] data = new byte[256];
1299                 for (int i = 0; i < 1; i ++)
1300                         temp = (uint)(data[temp >> 24] | data[temp >> 0]);
1301                 return 0;
1302         }
1303
1304         class Foo2 {
1305                 public virtual int foo () {
1306                         return 0;
1307                 }
1308         }
1309
1310         sealed class Bar2 : Foo2 {
1311                 public override int foo () {
1312                         return 0;
1313                 }
1314         }
1315
1316         public static int test_0_abcrem_check_this_removal () {
1317                 Bar2 b = new Bar2 ();
1318
1319                 // The check_this generated here by the JIT should be removed
1320                 b.foo ();
1321
1322                 return 0;
1323         }
1324
1325         static int invoke_twice (Bar2 b) {
1326                 b.foo ();
1327                 // The check_this generated here by the JIT should be removed
1328                 b.foo ();
1329
1330                 return 0;
1331         }
1332
1333         public static int test_0_abcrem_check_this_removal2 () {
1334                 Bar2 b = new Bar2 ();
1335
1336                 invoke_twice (b);
1337
1338                 return 0;
1339         }
1340
1341         /* #346563 */
1342         public static int test_0_array_access_64_bit () {
1343                 int[] arr2 = new int [10];
1344                 for (int i = 0; i < 10; ++i)
1345                         arr2 [i] = i;
1346                 string s = "ABCDEFGH";
1347
1348                 byte[] arr = new byte [4];
1349                 arr [0] = 252;
1350                 arr [1] = 255;
1351                 arr [2] = 255;
1352                 arr [3] = 255;
1353
1354                 int len = arr [0] | (arr [1] << 8) | (arr [2] << 16) | (arr [3] << 24);
1355                 int len2 = - (len + 2);
1356
1357                 // Test array and string access with a 32 bit value whose upper 32 bits are
1358                 // undefined
1359                 // len2 = 3
1360                 if (arr2 [len2] != 2)
1361                         return 1;
1362                 if (s [len2] != 'C')
1363                         return 2;
1364                 return 0;
1365         }
1366
1367         public static float return_float () {
1368                 return 1.4e-45f;
1369         }
1370
1371         [Category ("!BITCODE")] // bug #59953
1372         public static int test_0_float_return_spill () {
1373                 // The return value of return_float () is spilled because of the
1374                 // boxing call
1375                 object o = return_float ();
1376                 float f = return_float ();
1377                 return (float)o == f ? 0 : 1;
1378         }
1379
1380         class R4Holder {
1381                 public static float pi = 3.14f;
1382
1383                 public float float_field;
1384         }
1385
1386         public static int test_0_ldsfld_soft_float () {
1387                 if (R4Holder.pi == 3.14f)
1388                         return 0;
1389                 else
1390                         return 1;
1391         }
1392
1393         public static int test_0_ldfld_stfld_soft_float () {
1394                 R4Holder h = new R4Holder ();
1395                 h.float_field = 3.14f;
1396
1397                 if (h.float_field == 3.14f)
1398                         return 0;
1399                 else
1400                         return 1;
1401         }
1402
1403         class R4HolderRemote : MarshalByRefObject {
1404                 public static float pi = 3.14f;
1405
1406                 public float float_field;
1407         }
1408
1409         public static int test_0_ldfld_stfld_soft_float_remote () {
1410                 R4HolderRemote h = new R4HolderRemote ();
1411                 h.float_field = 3.14f;
1412
1413                 if (h.float_field == 3.14f)
1414                         return 0;
1415                 else
1416                         return 1;
1417         }
1418
1419         public static int test_0_locals_soft_float () {
1420                 float f = 0.0f;
1421
1422                 f = 3.14f;
1423
1424                 if (f == 3.14f)
1425                         return 0;
1426                 else
1427                         return 1;
1428         }
1429
1430         struct AStruct2 {
1431                 public int i;
1432                 public int j;
1433         }
1434
1435         static float pass_vtype_return_float (AStruct2 s) {
1436                 return s.i + s.j == 6 ? 1.0f : -1.0f;
1437         }
1438
1439         public static int test_0_vtype_arg_soft_float () {
1440                 return pass_vtype_return_float (new AStruct2 () { i = 2, j = 4 }) > 0.0 ? 0 : 1;
1441         }
1442
1443         static int range_check_strlen (int i, string s) {
1444                 if (i < 0 || i > s.Length)
1445                         return 1;
1446                 else
1447                         return 0;
1448         }
1449
1450         public static int test_0_range_check_opt () {
1451                 if (range_check_strlen (0, "A") != 0)
1452                         return 1;
1453                 if (range_check_strlen (1, "A") != 0)
1454                         return 2;
1455                 if (range_check_strlen (2, "A") != 1)
1456                         return 3;
1457                 if (range_check_strlen (-100, "A") != 1)
1458                         return 4;
1459                 return 0;
1460         }
1461
1462         static int test_0_array_get_set_soft_float () {
1463                 float[,] arr = new float [2, 2];
1464                 arr [0, 0] = 256f;
1465                 return arr [0, 0] == 256f ? 0 : 1;
1466         }
1467
1468         //repro for #506915
1469         struct Bug506915 { public int val; }
1470         static int test_2_ldobj_stobj_optization ()
1471         {
1472                 int i = 99;
1473                 var a = new Bug506915 ();
1474                 var b = new Bug506915 ();
1475                 if (i.GetHashCode () == 99)
1476                         i = 44;
1477                 var array = new Bug506915 [2];
1478                 array [0].val = 2;
1479                 array [1] = (i == 0) ? a : array [0];
1480
1481                 return array [1].val;
1482         }
1483
1484         /* mcs can't compile this (#646744) */
1485 #if FALSE
1486         static void InitMe (out Gamma noMercyWithTheStack) {
1487                 noMercyWithTheStack = new Gamma ();
1488         }
1489
1490         static int FunNoInline () {
1491                 int x = 99;
1492                 if (x > 344 && x < 22)
1493                         return 333;
1494                 return x;
1495         }
1496
1497         static float DoNothingButDontInline (float a, int b) {
1498                 if (b > 0)
1499                         return a;
1500                 else if (b < 0 && b > 10)
1501                         return 444.0f;
1502                 return a;
1503         }
1504
1505         /*
1506          * The local register allocator emits loadr8_membase and storer8_membase
1507          * to do spilling. This code is generated after mono_arch_lowering_pass so
1508          * mono_arch_output_basic_block must know how to deal with big offsets.
1509          * This only happens because the call in middle forces the temp for "(float)obj"
1510          * to be spilled.
1511         */
1512         public static int test_0_float_load_and_store_with_big_offset ()
1513         {
1514                 object obj = 1.0f;
1515                 Gamma noMercyWithTheStack;
1516                 float res;
1517
1518                 InitMe (out noMercyWithTheStack);
1519
1520                 res = DoNothingButDontInline ((float)obj, FunNoInline ());
1521
1522                 if (!(res == 1.0f))
1523                         return 1;
1524                 return 0;
1525         }
1526 #endif
1527
1528         struct VTypePhi {
1529                 public int i;
1530         }
1531
1532         static int vtype_phi (VTypePhi v1, VTypePhi v2, bool first) {
1533                 VTypePhi v = first ? v1 : v2;
1534
1535                 return v.i;
1536         }
1537
1538         static int test_0_vtype_phi ()
1539         {
1540                 VTypePhi v1 = new VTypePhi () { i = 1 };
1541                 VTypePhi v2 = new VTypePhi () { i = 2 };
1542
1543                 if (vtype_phi (v1, v2, true) != 1)
1544                         return 1;
1545                 if (vtype_phi (v1, v2, false) != 2)
1546                         return 2;
1547
1548                 return 0;
1549         }
1550
1551         [MethodImplAttribute (MethodImplOptions.NoInlining)]
1552         static void UseValue (int index)
1553         {
1554         }
1555
1556         [MethodImplAttribute (MethodImplOptions.NoInlining)]
1557         static bool IsFalse ()
1558         {
1559                 return false;
1560         }
1561
1562         static int test_0_llvm_moving_faulting_loads ()
1563         {
1564                 int[] indexes = null;
1565
1566                 if (IsFalse ()) {
1567                         indexes = new int[0];
1568                 }
1569
1570                 while (IsFalse ()) {
1571                         UseValue (indexes[0]);
1572                         UseValue (indexes[0]);
1573                 }
1574
1575                 return 0;
1576         }
1577
1578         public static bool flag;
1579
1580         class B {
1581
1582                 internal static B[] d;
1583
1584                 static B () {
1585                         flag = true;
1586                 }
1587         }
1588
1589         [MethodImplAttribute (MethodImplOptions.NoInlining)]
1590         static int regress_679467_inner () {
1591                 if (flag == true)
1592                         return 1;
1593                 var o = B.d;
1594                 var o2 = B.d;
1595                 return 0;
1596         }
1597
1598         /*
1599          * FIXME: This fails with AOT #703317.
1600          */
1601         /*
1602         static int test_0_multiple_cctor_calls_regress_679467 () {
1603                 flag = false;
1604                 return regress_679467_inner ();
1605         }
1606         */
1607
1608         static int test_0_char_ctor () {
1609                 string s = new String (new char[] { 'A', 'B' }, 0, 1);
1610                 return 0;
1611         }
1612
1613         static object mInstance = null;
1614
1615         [MethodImpl(MethodImplOptions.Synchronized)]
1616         public static object getInstance() {
1617                 if (mInstance == null)
1618                         mInstance = new object();
1619                 return mInstance;
1620         }
1621
1622         static int test_0_synchronized () {
1623                 getInstance ();
1624                 return 0;
1625         }
1626
1627         struct BStruct {
1628                 public Type t;
1629         }
1630
1631         class Del<T> {
1632                 public static BStruct foo () {
1633                         return new BStruct () { t = typeof (T) };
1634                 }
1635         }
1636
1637         delegate BStruct ADelegate ();
1638
1639         static int test_0_regress_10601 () {
1640                 var act = (ADelegate)(Del<string>.foo);
1641                 BStruct b = act ();
1642                 if (b.t != typeof (string))
1643                         return 1;
1644                 return 0;
1645         }
1646
1647         static int test_0_regress_11058 () {
1648                 int foo = -252674008;
1649                 int foo2 = (int)(foo ^ 0xF0F0F0F0); // = 28888
1650                 var arr = new byte[foo2].Length;
1651                 return 0;
1652         }
1653
1654         public static void do_throw () {
1655                 throw new Exception ();
1656         }
1657
1658         [MethodImplAttribute (MethodImplOptions.NoInlining)]
1659         static void empty () {
1660         }
1661
1662         // #11297
1663         public static int test_0_llvm_inline_throw () {
1664                 try {
1665                         empty ();
1666                 } catch (Exception) {
1667                         do_throw ();
1668                 }
1669
1670                 return 0;
1671         }
1672
1673         enum ByteEnum : byte {
1674         Zero = 0
1675     }
1676
1677     struct BugStruct {
1678         public ByteEnum f1;
1679         public ByteEnum f2;
1680         public ByteEnum f3;
1681         public byte f4;
1682         public byte f5;
1683         public byte f6;
1684         public byte f7;
1685     }
1686
1687         public static int test_0_14217 () {
1688                 t_14217_inner (new BugStruct ());
1689                 return 0;
1690         }
1691
1692         [MethodImplAttribute (MethodImplOptions.NoInlining)]
1693         static void t_14217_inner (BugStruct bug) {
1694     }
1695
1696         [StructLayout(LayoutKind.Sequential)]
1697         public struct EmptyStruct {
1698         }
1699
1700         class EmptyClass {
1701                 public static EmptyStruct s;
1702         }
1703
1704         // #20349
1705         static int test_0_empty_struct_as_static () {
1706                 var s = EmptyClass.s;
1707                 return 0;
1708         }
1709
1710         // #25487
1711         static int test_0_int_to_r4 () {
1712                 return int_to_r4_inner (255);
1713         }
1714
1715         static int int_to_r4_inner (int value1) {
1716                 int sub = -value1;
1717                 float mult = sub * 1f;
1718                 if (mult != -255.0f)
1719                         return 1;
1720                 else
1721                         return 0;
1722         }
1723
1724         struct HFA4D {
1725                 public double a, b, c, d;
1726         }
1727
1728         static double arm64_hfa_on_stack_inner (double d1, double d2, double d3, double d4, double d5, double d6, double d7, double d8, HFA4D s) {
1729                 return s.a + s.b + s.c + s.d;
1730         }
1731
1732         static int test_0_arm64_hfa_on_stack () {
1733                 var s = new HFA4D () { a = 1.0, b = 2.0, c = 3.0, d = 4.0 };
1734                 var res = arm64_hfa_on_stack_inner (1, 2, 3, 4, 5, 6, 7, 8, s);
1735                 return res == 10.0 ? 0 : 1;
1736         }
1737
1738         class MulOvfClass {
1739                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1740                 public unsafe void EncodeIntoBuffer(char* value, int valueLength, char* buffer, int bufferLength) {
1741                 }
1742         }
1743
1744         static unsafe int test_0_mul_ovf_regress_36052 () {
1745                 var p = new MulOvfClass ();
1746
1747                 string typeName = typeof(int).Name;
1748                 int bufferSize = 45;
1749
1750                 fixed (char* value = typeName) {
1751                         char* buffer = stackalloc char[bufferSize];
1752                         p.EncodeIntoBuffer(value, typeName.Length, buffer, bufferSize);
1753                 }
1754                 return 0;
1755         }
1756
1757         struct Struct16 {
1758                 public int a, b, c, d;
1759         }
1760
1761         [MethodImplAttribute (MethodImplOptions.NoInlining)]
1762         static int pass_struct16 (object o0, object o2, object o3, object o4, object o5, object o6, object o7, Struct16 o8) {
1763                 // This disables LLVM
1764                 try {
1765                 } catch {
1766                 }
1767                 return o8.a;
1768         }
1769
1770         [MethodImplAttribute (MethodImplOptions.NoInlining)]
1771         static int pass_struct16 (object o0, object o2, object o3, object o6, object o7, Struct16 o8) {
1772                 return pass_struct16 (o0, o2, null, o3, null, o6, o7, o8);
1773         }
1774
1775         public static int test_42_pass_16byte_struct_split () {
1776                 return pass_struct16 (null, null, null, null, null, new Struct16 () { a = 42 });
1777         }
1778
1779         public interface IComparer2
1780         {
1781                 Type foo<T> ();
1782         }
1783
1784         public class AClass : IComparer2 {
1785                 public Type foo<T> () {
1786                         return typeof(T);
1787                 }
1788         }
1789
1790         public static int test_0_delegate_to_virtual_generic_on_ifaces () {
1791                 IComparer2 c = new AClass ();
1792
1793                 Func<Type> f = c.foo<string>;
1794                 return f () == typeof(string) ? 0 : 1;
1795         }
1796
1797         public enum ByteEnum2 : byte {
1798                 High = 142
1799         }
1800
1801         [MethodImplAttribute (MethodImplOptions.NoInlining)]
1802         public static int enum_arg_zero_extend (ByteEnum2 b) {
1803                 return (int)b;
1804         }
1805
1806         public static int test_142_byte_enum_arg_zero_extend () {
1807                 return enum_arg_zero_extend (ByteEnum2.High);
1808         }
1809
1810         enum Mine { One, Two }
1811
1812         public static int test_0_enum_gethashcode_opt () {
1813                 int sum = 0;
1814         for (int i = 0; i < 1000000; ++i)
1815                         sum += Mine.Two.GetHashCode();
1816
1817         return 0;
1818     }
1819
1820         public static int test_0_typedref () {
1821                 int i = 5;
1822                 System.TypedReference r = __makeref(i);
1823                 System.Type t = __reftype(r);
1824
1825                 if (t != typeof (int))
1826                         return 1;
1827                 int j = __refvalue(r, int);
1828                 if (j != 5)
1829                         return 2;
1830
1831                 try {
1832                         object o = __refvalue (r, object);
1833                 } catch (InvalidCastException) {
1834                 }
1835
1836                 return 0;
1837         }
1838
1839         enum FooEnum { Bar }
1840         //https://github.com/mono/mono/issues/6666
1841         public static int test_0_bad_unbox_nullable_of_enum () {
1842                 try {
1843                         var enumValue = FooEnum.Bar;
1844                         object value = (int)enumValue;
1845                         var res = (FooEnum?)value; // Should throw
1846                 } catch (InvalidCastException) {
1847                         return 0;
1848                 }
1849                 return 1;
1850         }
1851
1852         //https://github.com/mono/mono/issues/6666
1853         public static int test_0_unbox_nullable_of_enum () {
1854                 try {
1855                         var enumValue = FooEnum.Bar;
1856                         object value = (object)enumValue;
1857                         var res = (FooEnum?)value; // Should not throw
1858                 } catch (InvalidCastException) {
1859                         return 1;
1860                 }
1861                 return 0;
1862         }
1863
1864         static void decode (out sbyte v) {
1865                 byte tmp = 134;
1866                 v = (sbyte)tmp;
1867         }
1868
1869         // gh #6414
1870         public static int test_0_alias_analysis_sign_extend () {
1871           sbyte t;
1872           decode (out t);
1873
1874           return t == -122 ? 0 : 1;
1875         }
1876
1877         public interface IFoo
1878         {
1879           int MyInt { get; }
1880         }
1881
1882         public class IFooImpl : IFoo
1883         {
1884           public int MyInt => 0;
1885         }
1886
1887         //gh 6266
1888     public static int test_0_store_to_magic_iface_array ()
1889     {
1890       ICollection<IFoo> arr1 = new IFooImpl[1] { new IFooImpl() };
1891       ICollection<IFoo> arr2 = new IFooImpl[1] { new IFooImpl() };
1892
1893       ICollection<IFoo>[] a2d = new ICollection<IFoo>[2] {
1894         arr1,
1895         arr2,
1896       };
1897
1898           return 0;
1899     }
1900
1901         static volatile bool abool;
1902
1903         public static unsafe int test_0_stind_r4_float32_stack_merge () {
1904                 Single* dataPtr = stackalloc Single[4];
1905                 abool = true;
1906                 dataPtr[0] = abool ? 1.0f : 2.0f;
1907                 return dataPtr [0] == 1.0f ? 0 : 1;
1908         }
1909
1910 }
1911
1912 #if __MOBILE__
1913 }
1914 #endif