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

/* { dg-options "-mgp64 forbid_cpu=octeon.*" } */
/* { dg-skip-if "code quality test" { *-*-* } { "-O0" } { "" } } */
/* { dg-final { scan-assembler-times "\tdsll\t" 5 } } */
/* { dg-final { scan-assembler-times "\tdsra\t" 5 } } */
/* { dg-final { scan-assembler-not "\tsll\t" } } */

#define TEST_CHAR(T, N)				\
  NOMIPS16 T					\
  f##N (long long d, T *a, T *r)		\
  {						\
    T b = (signed char) d; *r = b + *a;		\
  }
#define TEST_SHORT(T, N)			\
  NOMIPS16 T					\
  g##N (long long d, T *a, T *r)		\
  {						\
    T b = (short) d; *r = b + *a;		\
  }
#define TEST(T, N) TEST_CHAR (T, N) TEST_SHORT (T, N)

TEST (int, 1);
TEST (long long, 2);
TEST_CHAR (short, 3);