gcc/testsuite/gcc.dg/20020312-2.c

   1 /* PR 5878.
   2
   3    We ICEd in verify_local_live_at_start because we incorrectly forced
   4    the PIC register live between BAR and BAZ.  We did this because the
   5    definition of PIC_OFFSET_TABLE_REGNUM was incorrectly not INVALID_REGNUM
   6    when !flag_pic for most targets.  */
   7
   8 /* { dg-do run } */
   9 /* { dg-options "-O -fno-pic" } */
  10
  11 #if #cpu(a29k)
  12 /* No pic register.  */
  13 #elif defined(__alpha__)
  14 /* PIC register is $29, but is used even without -fpic.  */
  15 #elif defined(__arc__)
  16 # define PIC_REG  "26"
  17 #elif defined(__arm__)
  18 # define PIC_REG  "9"
  19 #elif defined(AVR)
  20 /* No pic register.  */
  21 #elif defined(__clipper__)
  22 /* No pic register.  */
  23 #elif defined(__convex__)
  24 /* No pic register.  */
  25 #elif defined(__cris__)
  26 # define PIC_REG  "0"
  27 #elif defined(__D30V__)
  28 /* No pic register.  */
  29 #elif defined(__dsp1600__)
  30 /* No pic register.  */
  31 #elif defined(__elxsi__)
  32 /* No pic register.  */
  33 #elif defined(__fr30__)
  34 /* No pic register.  */
  35 #elif defined(__H8300__) || defined(__H8300H__) || defined(__H8300S__)
  36 /* No pic register.  */
  37 #elif defined(_IBMR2)
  38 /* No pic register.  */
  39 #elif #cpu(i370)
  40 /* No pic register.  */
  41 #elif defined(__i386__)
  42 # define PIC_REG  "ebx"
  43 #elif defined(__i860__)
  44 /* No pic register.  */
  45 #elif defined(__i960__)
  46 /* No pic register.  */
  47 #elif defined(__ia64__)
  48 /* PIC register is r1, but is used even without -fpic.  */
  49 #elif defined(__M32R__)
  50 /* No pic register.  */
  51 #elif defined(__m68k__)
  52 # define PIC_REG  "a5"
  53 #elif defined(__m88k__)
  54 # define PIC_REG  "25"
  55 #elif defined(__mc68hc1x__)
  56 /* No pic register.  */
  57 #elif defined(__mcore__)
  58 /* No pic register.  */
  59 #elif defined(__mips__)
  60 /* PIC register is $28, but is used even without -fpic.  */
  61 #elif defined(__MMIX__)
  62 /* No pic register.  */
  63 #elif defined(__mn10200__)
  64 /* No pic register.  */
  65 #elif defined(__mn10300__)
  66 /* No pic register.  */
  67 #elif #cpu(ns32k)
  68 /* No pic register.  */
  69 #elif defined(__parisc__)
  70 /* PIC register is %r27 or %r19, but is used even without -fpic.  */
  71 #elif defined(__pdp11__)
  72 /* No pic register.  */
  73 #elif defined(__pj__)
  74 /* No pic register.  */
  75 #elif defined(__powerpc__)
  76 # ifdef __darwin__
  77 #  define PIC_REG  "31"
  78 # else
  79 #  define PIC_REG  "30"
  80 # endif
  81 #elif defined(__ibm032__) /* aka romp */
  82 /* No pic register.  */
  83 #elif defined(__s390__)
  84 # define PIC_REG  "12"
  85 #elif defined(__sparc__)
  86 # define PIC_REG  "l7"
  87 #elif defined(__v850)
  88 /* No pic register.  */
  89 #elif defined(__vax__)
  90 /* No pic register.  */
  91 #elif defined(__we32000__)
  92 /* No pic register.  */
  93 #elif defined(__xstormy16__)
  94 /* No pic register.  */
  95 #elif defined(__XTENSA__)
  96 /* No pic register.  */
  97 #else
  98 # error "Modify the test for your target."
  99 #endif
 100
 101 #ifdef PIC_REG
 102 register void *reg __asm__(PIC_REG);
 103 #else
 104 /* We really need a global register variable set to the PIC register
 105    to expose the bug.  Oh well, let the test case not fail.  */
 106 static void *reg;
 107 #endif
 108
 109 void * __attribute__((noinline))
 110 dummy (void *x)
 111 {
 112   return x;
 113 }
 114
 115 void
 116 f (void)
 117 {
 118   goto *dummy (&&bar);
 119   for (;;)
 120     {
 121     foo:
 122       reg = (void *) 1;
 123       if (!reg)
 124         goto baz;
 125       reg = &&foo;
 126     }
 127
 128  bar:
 129  baz:
 130   reg = 0;
 131 }
 132
 133 int
 134 main()
 135 {
 136   void *old_reg = reg;
 137   reg = (void *) 1;
 138   f ();
 139   if (reg)
 140     abort ();
 141   reg = old_reg;
 142   return 0;
 143 }