gcc/testsuite/gcc.target/mips/ext-3.c

   1 /* For MIPS64r2 use DEXT rather than DSLL/DSRL to zero-extend.  */
   2 /* { dg-do compile } */
   3 /* { dg-options "isa_rev>=2 -mgp64" } */
   4 /* { dg-skip-if "code quality test" { *-*-* } { "-O0" } { "" } } */
   5 /* { dg-final { scan-assembler "\tdext\t" } } */
   6 /* { dg-final { scan-assembler-not "\td?sll" } } */
   7
   8 NOMIPS16 unsigned long long
   9 f (unsigned *i)
  10 {
  11   unsigned j = *i;
  12   j >>= 1;                      /* enforce this is all done in SI mode */
  13   j++;                          /* don't merge the shift and the extension */
  14   return j;
  15 }