gcc/testsuite/gcc.target/mips/dse-1.c

   1 /* { dg-mips-options "-mgp64 -O" } */
   2
   3 #define TEST(ID, TYPE1, TYPE2)                                  \
   4   union {                                                       \
   5     TYPE1 m1[sizeof (TYPE2) / sizeof (TYPE1)];                  \
   6     TYPE2 m2;                                                   \
   7   } u##ID;                                                      \
   8                                                                 \
   9   /* The MIPS16 versions of the shifts we need are too          \
  10      expensive.  */                                             \
  11   TYPE1 __attribute__((nomips16))                               \
  12   f##ID (TYPE2 x)                                               \
  13   {                                                             \
  14     u##ID.m2 = x;                                               \
  15     return (u##ID.m1[0]                                         \
  16             + u##ID.m1[sizeof (TYPE2) / sizeof (TYPE1) - 1]);   \
  17   }
  18
  19 TEST (1, unsigned int, unsigned long long);
  20 TEST (2, int, long long);
  21 TEST (3, unsigned short, unsigned long long);
  22 TEST (4, short, long long);
  23 TEST (5, unsigned char, unsigned long long);
  24 TEST (6, signed char, long long);
  25
  26 TEST (7, unsigned short, unsigned int);
  27 TEST (8, short, int);
  28 TEST (9, unsigned char, unsigned int);
  29 TEST (10, signed char, int);
  30
  31 /* DSE isn't yet read to consider stores of subregs, so the corresponding
  32    (char, short) tests won't pass.  */
  33
  34 /* { dg-final { scan-assembler-not "\tlh\t" } } */
  35 /* { dg-final { scan-assembler-not "\tlw\t" } } */
  36 /* { dg-final { scan-assembler-not "\tlb\t" } } */