gcc/testsuite/gcc.target/mips/pr51513-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-mips16 -mcode-readable=yes" } */
   3
   4 /* PR tree-optimization/51513 verification variant for MIPS16, #1.  */
   5
   6 int __attribute__ ((weak))
   7 frob (int i)
   8 {
   9   switch (i)
  10     {
  11     case -5:
  12       return -2;
  13     case -3:
  14       return -1;
  15     case 0:
  16       return 0;
  17     case 3:
  18       return 1;
  19     case 5:
  20       break;
  21     default:
  22       __builtin_unreachable ();
  23     }
  24   return i;
  25 }
  26
  27 /* Without the fix for PR tree-optimization/51513 truncated code
  28    would be emitted for `frob', like:
  29
  30         .text
  31         .align  2
  32         .weak   frob
  33         .set    mips16
  34         .set    nomicromips
  35         .ent    frob
  36         .type   frob, @function
  37 frob:
  38         .frame  $sp,0,$31               # vars= 0, regs= 0/0, args= 0, gp= 0
  39         .mask   0x00000000,0
  40         .fmask  0x00000000,0
  41         addiu   $2,$4,5
  42         .end    frob
  43         .size   frob, .-frob
  44
  45   meaning `frob' will have no chance to return, let alone produce
  46   the result expected.  */
  47
  48 /* { dg-final { scan-assembler "\tjrc?\t\\\$31\n" } } */