gcc/testsuite/gcc.target/sh/pr54680.c

   1 /* Verify that the fsca input value is not converted to float and then back
   2    to int.  Notice that we can't count just "lds" insns because mode switches
   3    use "lds.l".  */
   4 /* { dg-do compile { target { has_fsca } } }  */
   5 /* { dg-options "-O2 -mfsca -funsafe-math-optimizations -fno-ipa-icf" }  */
   6 /* { dg-final { scan-assembler-times "fsca" 7 } } */
   7 /* { dg-final { scan-assembler-times "shad" 1 } } */
   8 /* { dg-final { scan-assembler-times "lds\tr\[0-9\],fpul" 6 } } */
   9 /* { dg-final { scan-assembler-times "fmul" 2 } } */
  10 /* { dg-final { scan-assembler-times "ftrc" 1 } } */
  11
  12 #include <math.h>
  13
  14 static const float pi = 3.14159265359f;
  15
  16 float
  17 test00 (int x)
  18 {
  19   /* 1x shad, 1x lds, 1x fsca  */
  20   return sinf ( (x >> 8) * (2*pi) / (1 << 16));
  21 }
  22
  23 float
  24 test01 (int x)
  25 {
  26   /* 1x lds, 1x fsca  */
  27   return sinf (x * (2*pi) / 65536);
  28 }
  29
  30 float
  31 test02 (int x)
  32 {
  33   /* 1x lds, 1x fsca  */
  34   return sinf (x * (2*pi / 65536));
  35 }
  36
  37 float
  38 test03 (int x)
  39 {
  40   /* 1x lds, 1x fsca  */
  41   float scale = 2*pi / 65536;
  42   return sinf (x * scale);
  43 }
  44
  45 float
  46 test04 (int x)
  47 {
  48   /* 1x lds, 1x fsca  */
  49   return cosf (x / 65536.0f * 2*pi);
  50 }
  51
  52 float
  53 test05 (int x)
  54 {
  55   /* 1x lds, 1x fsca, 1x fmul  */
  56   float scale = 2*pi / 65536;
  57   return sinf (x * scale) * cosf (x * scale);
  58 }
  59
  60 float
  61 test_06 (float x)
  62 {
  63   /* 1x fmul, 1x ftrc, 1x fsca  */
  64   return sinf (x);
  65 }