gcc/testsuite/gcc.target/sh/pr51244-20.c

   1 /* Check that the SH specific sh_treg_combine RTL optimization pass works as
   2    expected.  On SH2A the expected insns are slightly different, see
   3    pr51244-20-sh2a.c.  */
   4 /* { dg-do compile }  */
   5 /* { dg-options "-O2" } */
   6 /* { dg-skip-if "" { "sh*-*-*" } { "-m5*" "-m2a*" } { "" } } */
   7 /* { dg-final { scan-assembler-times "tst" 7 } } */
   8 /* { dg-final { scan-assembler-times "movt" 2 } } */
   9 /* { dg-final { scan-assembler-times "cmp/eq" 2 } } */
  10 /* { dg-final { scan-assembler-times "cmp/hi" 4 } } */
  11 /* { dg-final { scan-assembler-times "cmp/gt" 2 } } */
  12 /* { dg-final { scan-assembler-not "not\t" } } */
  13
  14
  15 /* non-SH2A: 2x tst, 1x movt, 2x cmp/eq, 1x cmp/hi
  16    SH2A: 1x tst, 1x nott, 2x cmp/eq, 1x cmp/hi  */
  17 static inline int
  18 blk_oversized_queue_0 (int* q)
  19 {
  20   if (q[2])
  21     return q[1] == 5;
  22   return (q[0] != 5);
  23 }
  24
  25 int __attribute__ ((noinline))
  26 get_request_0 (int* q, int rw)
  27 {
  28   if (blk_oversized_queue_0 (q))
  29     {
  30       if ((rw == 1) || (rw == 0))
  31         return -33;
  32       return 0;
  33     }
  34   return -100;
  35 }
  36
  37
  38 /* 1x tst, 1x cmp/gt, 1x cmp/hi
  39    On SH2A mem loads/stores have a wrong length of 4 bytes and thus will
  40    not be placed in a delay slot.  This introduces an extra cmp/gt insn.  */
  41 static inline int
  42 blk_oversized_queue_1 (int* q)
  43 {
  44   if (q[2])
  45     return q[1] > 5;
  46   return (q[0] > 5);
  47 }
  48
  49 int __attribute__ ((noinline))
  50 get_request_1 (int* q, int rw)
  51 {
  52   if (blk_oversized_queue_1 (q))
  53     {
  54       if ((rw == 1) || (rw == 0))
  55         return -33;
  56       return 0;
  57     }
  58   return -100;
  59 }
  60
  61
  62 /* 1x tst, 1x cmp/gt, 1x cmp/hi, 1x cmp/hi  */
  63 static inline int
  64 blk_oversized_queue_2 (int* q)
  65 {
  66   if (q[2])
  67     return q[1] > 5;
  68   return (q[0] < 5);
  69 }
  70
  71 int __attribute__ ((noinline))
  72 get_request_2 (int* q, int rw)
  73 {
  74   if (blk_oversized_queue_2 (q))
  75     {
  76       if ((rw == 1) || (rw == 0))
  77         return -33;
  78       return 0;
  79     }
  80   return -100;
  81 }
  82
  83
  84 /* 3x tst, 1x movt, 1x cmp/hi, 1x not  */
  85 static inline int
  86 blk_oversized_queue_5 (int* q)
  87 {
  88   if (q[2])
  89     return q[1] != 0;
  90   return q[0] == 0;
  91 }
  92
  93 int __attribute__ ((noinline))
  94 get_request_5 (int* q, int rw)
  95 {
  96   if (blk_oversized_queue_5 (q))
  97     {
  98       if ((rw == 1) || (rw == 0))
  99         return -33;
 100       return 0;
 101     }
 102   return -100;
 103 }