gcc/testsuite/gcc.target/sh/pr49263-2.c

   1 /* Verify that TST #imm, R0 instruction is generated when QImode or HImode
   2    values are tested against a negative constant.  */
   3 /* { dg-do compile }  */
   4 /* { dg-options "-O2" }  */
   5 /* { dg-final { scan-assembler-not "and" } }  */
   6 /* { dg-final { scan-assembler-not "exts" } }  */
   7 /* { dg-final { scan-assembler-times "tst\t#127,r0" 2 } }  */
   8 /* { dg-final { scan-assembler-times "tst\t#255,r0" 1 } }  */
   9 /* { dg-final { scan-assembler-times "65407" 1 } }  */
  10 /* { dg-final { scan-assembler-times "-129" 2 } }  */
  11 /* { dg-final { scan-assembler-times "extu" 1 } }  */
  12
  13 int
  14 test_00 (unsigned char x)
  15 {
  16   /* 1x tst #127  */
  17   return x & -129 ? -20 : -40;
  18 }
  19
  20 int
  21 test_01 (signed char x)
  22 {
  23   /* 1x tst #255  */
  24   return x & -129 ? -20 : -40;
  25 }
  26
  27 int
  28 test_02 (unsigned short x)
  29 {
  30   /* 1x tst 65407  */
  31   return x & -129 ? -20 : -40;
  32 }
  33
  34 int
  35 test_03 (unsigned short* x)
  36 {
  37   /* 1x tst -129  */
  38   return x[0] & -129 ? -20 : -40;
  39 }
  40
  41 int
  42 test_04 (unsigned short x)
  43 {
  44   /* 1x extu.w, 1x tst -129  */
  45   return x & -129 ? x : -1;
  46 }
  47
  48 int
  49 test_05 (unsigned char* x)
  50 {
  51   /* 1x tst #127  */
  52   return x[0] & -129 ? -20 : -40;
  53 }