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

   1 /* Check that the SH specific sh_treg_combine RTL optimization pass works as
   2    expected.  */
   3 /* { dg-do compile }  */
   4 /* { dg-options "-O2" } */
   5
   6 /* { dg-final { scan-assembler-not "not\t" } } */
   7 /* { dg-final { scan-assembler-times "cmp/eq" 2 } } */
   8 /* { dg-final { scan-assembler-times "cmp/hi" 4 } } */
   9 /* { dg-final { scan-assembler-times "cmp/gt" 2 } } */
  10
  11 /* { dg-final { scan-assembler-times "tst" 7 { target { ! sh2a } } } } */
  12 /* { dg-final { scan-assembler-times "movt" 2 { target { ! sh2a } } } } */
  13
  14 /* { dg-final { scan-assembler-times "tst" 6 { target { sh2a } } } } */
  15 /* { dg-final { scan-assembler-not "movt" { target { sh2a } } } } */
  16 /* { dg-final { scan-assembler-times "nott" 2 { target { sh2a } } } } */
  17
  18
  19 /* non-SH2A: 2x tst, 1x movt, 2x cmp/eq, 1x cmp/hi
  20    SH2A: 1x tst, 1x nott, 2x cmp/eq, 1x cmp/hi  */
  21 static inline int
  22 blk_oversized_queue_0 (int* q)
  23 {
  24   if (q[2])
  25     return q[1] == 5;
  26   return (q[0] != 5);
  27 }
  28
  29 int __attribute__ ((noinline))
  30 get_request_0 (int* q, int rw)
  31 {
  32   if (blk_oversized_queue_0 (q))
  33     {
  34       if ((rw == 1) || (rw == 0))
  35         return -33;
  36       return 0;
  37     }
  38   return -100;
  39 }
  40
  41
  42 /* 1x tst, 1x cmp/gt, 1x cmp/hi
  43    On SH2A mem loads/stores have a wrong length of 4 bytes and thus will
  44    not be placed in a delay slot.  This introduces an extra cmp/gt insn.  */
  45 static inline int
  46 blk_oversized_queue_1 (int* q)
  47 {
  48   if (q[2])
  49     return q[1] > 5;
  50   return (q[0] > 5);
  51 }
  52
  53 int __attribute__ ((noinline))
  54 get_request_1 (int* q, int rw)
  55 {
  56   if (blk_oversized_queue_1 (q))
  57     {
  58       if ((rw == 1) || (rw == 0))
  59         return -33;
  60       return 0;
  61     }
  62   return -100;
  63 }
  64
  65
  66 /* 1x tst, 1x cmp/gt, 1x cmp/hi, 1x cmp/hi  */
  67 static inline int
  68 blk_oversized_queue_2 (int* q)
  69 {
  70   if (q[2])
  71     return q[1] > 5;
  72   return (q[0] < 5);
  73 }
  74
  75 int __attribute__ ((noinline))
  76 get_request_2 (int* q, int rw)
  77 {
  78   if (blk_oversized_queue_2 (q))
  79     {
  80       if ((rw == 1) || (rw == 0))
  81         return -33;
  82       return 0;
  83     }
  84   return -100;
  85 }
  86
  87
  88 /* 3x tst, 1x movt, 1x cmp/hi, 1x not  */
  89 static inline int
  90 blk_oversized_queue_5 (int* q)
  91 {
  92   if (q[2])
  93     return q[1] != 0;
  94   return q[0] == 0;
  95 }
  96
  97 int __attribute__ ((noinline))
  98 get_request_5 (int* q, int rw)
  99 {
 100   if (blk_oversized_queue_5 (q))
 101     {
 102       if ((rw == 1) || (rw == 0))
 103         return -33;
 104       return 0;
 105     }
 106   return -100;
 107 }