gcc-4_9/gcc/testsuite/gcc.target/sh/pr55303-1.c

   1 /* Verify that the SH2A clips and clipu instructions are generated as
   2    expected.  */
   3 /* { dg-do compile }  */
   4 /* { dg-options "-O2" } */
   5 /* { dg-skip-if "" { "sh*-*-*" } { "*" } { "-m2a*" } } */
   6 /* { dg-final { scan-assembler-times "clips.b" 2 } } */
   7 /* { dg-final { scan-assembler-times "clips.w" 2 } } */
   8 /* { dg-final { scan-assembler-times "clipu.b" 2 } } */
   9 /* { dg-final { scan-assembler-times "clipu.w" 2 } } */
  10
  11 static inline int
  12 min (int a, int b)
  13 {
  14   return a < b ? a : b;
  15 }
  16
  17 static inline int
  18 max (int a, int b)
  19 {
  20   return a < b ? b : a;
  21 }
  22
  23 int
  24 test_00 (int a)
  25 {
  26   /* 1x clips.b  */
  27   return max (-128, min (127, a));
  28 }
  29
  30 int
  31 test_01 (int a)
  32 {
  33   /* 1x clips.b  */
  34   return min (127, max (-128, a));
  35 }
  36
  37 int
  38 test_02 (int a)
  39 {
  40   /* 1x clips.w  */
  41   return max (-32768, min (32767, a));
  42 }
  43
  44 int
  45 test_03 (int a)
  46 {
  47   /* 1x clips.w  */
  48   return min (32767, max (-32768, a));
  49 }
  50
  51 unsigned int
  52 test_04 (unsigned int a)
  53 {
  54   /* 1x clipu.b  */
  55   return a > 255 ? 255 : a;
  56 }
  57
  58 unsigned int
  59 test_05 (unsigned int a)
  60 {
  61   /* 1x clipu.b  */
  62   return a >= 255 ? 255 : a;
  63 }
  64
  65 unsigned int
  66 test_06 (unsigned int a)
  67 {
  68   /* 1x clipu.w  */
  69   return a > 65535 ? 65535 : a;
  70 }
  71
  72 unsigned int
  73 test_07 (unsigned int a)
  74 {
  75   /* 1x clipu.w  */
  76   return a >= 65535 ? 65535 : a;
  77 }
  78
  79 void
  80 test_08 (unsigned short a, unsigned short b, unsigned int* r)
  81 {
  82   /* Must not see a clip insn here -- it is not needed.  */
  83   unsigned short x = a + b;
  84   if (x > 65535)
  85     x = 65535;
  86   *r = x;
  87 }