gcc/testsuite/gcc.target/powerpc/pr104698-2.c

   1 /* { dg-require-effective-target int128     } */
   2 /* { dg-require-effective-target power10_ok } */
   3 /* { dg-options "-mdejagnu-cpu=power10 -O2" } */
   4
   5 /* PR target/104694 involved GCC generating vextsd2q to convent long long to
   6    __int128_t when the long long value was in the GPR register.  This test
   7    verifies that if the result is in the Altivec registers, we still want to
   8    generate vextsd2q.  We use __int128_t to indicate that we want the result of
   9    the conversion to be in an Altivec register. */
  10
  11 void do_div_1 (__int128_t *p, __int128_t *q, long long r)
  12 {
  13   *p = *q / r;          /* mtvsrdd, vextsd2q, vdivsq.  */
  14 }
  15
  16 /* Test the optimization in vsx.md to use lxvrdx instead of ld and mtvsrdd if
  17    the value is coming from memory.  */
  18
  19 void do_div_2 (__int128_t *p, __int128_t *q, long long *r)
  20 {
  21   *p = *q / r[2];       /* lxvrdx, vextsd2q, vdivsq.  */
  22 }
  23
  24 /* { dg-final { scan-assembler-not   {\mld\M}         } } */
  25 /* { dg-final { scan-assembler-not   {\mmfvsrd\M}     } } */
  26 /* { dg-final { scan-assembler-not   {\mmfvsrld\M}    } } */
  27 /* { dg-final { scan-assembler-not   {\msradi\M}      } } */
  28 /* { dg-final { scan-assembler-times {\mlxv\M}      2 } } */
  29 /* { dg-final { scan-assembler-times {\mlxvrdx\M}   1 } } */
  30 /* { dg-final { scan-assembler-times {\mmtvsrdd\M}  1 } } */
  31 /* { dg-final { scan-assembler-times {\mstxv\M}     2 } } */
  32 /* { dg-final { scan-assembler-times {\mvdivsq\M}   2 } } */
  33 /* { dg-final { scan-assembler-times {\mvextsd2q\M} 2 } } */