[gcc-7 backport PATCH, rs6000/PR84388] fix fold-vec-mult-int128 testcases

[Will Schmidt]

Hi, 
  This backports some testcase fixes to the gcc7 branch.  The testcases 
touched here would now match their gcc-trunk equivalents.

OK for gcc-7 ?

Thanks,
-Will

[testsuite]

2018-02-14  Will Schmidt  <will_schm...@vnet.ibm.com>

        PR target/84388
        * gcc.target/powerpc/fold-vec-mult-int128-p8.c: Update dg-options
        and scan-assembler stanzas.
        * gcc.target/powerpc/fold-vec-mult-int128-p9.c: Same.



Index: fold-vec-mult-int128-p8.c
===================================================================
--- fold-vec-mult-int128-p8.c   (revision 257672)
+++ fold-vec-mult-int128-p8.c   (working copy)
@@ -4,7 +4,9 @@
 /* { dg-do compile } */
 /* { dg-require-effective-target powerpc_p8vector_ok } */
 /* { dg-require-effective-target int128 } */
-/* { dg-options "-maltivec -mvsx -mpower8-vector" } */
+/* { dg-require-effective-target lp64 } */
+/* { dg-skip-if "do not override -mcpu" { powerpc*-*-* } { "-mcpu=*" } { 
"-mcpu=power8" } } */
+/* { dg-options "-mpower8-vector -mcpu=power8 -O2" } */
 /* { dg-additional-options "-maix64" { target powerpc-ibm-aix* } } */
 
 #include "altivec.h"
@@ -21,5 +23,5 @@
   return vec_mul (x, y);
 }
 
-/* { dg-final { scan-assembler-times "\[ \t\]mulld " 6 } } */
-/* { dg-final { scan-assembler-times "\[ \t\]mulhdu" 2 } } */
+/* { dg-final { scan-assembler-times {\mmulld\M} 6 } } */
+/* { dg-final { scan-assembler-times {\mmulhdu\M} 2 } } */
Index: fold-vec-mult-int128-p9.c
===================================================================
--- fold-vec-mult-int128-p9.c   (revision 257672)
+++ fold-vec-mult-int128-p9.c   (working copy)
@@ -2,10 +2,10 @@
    inputs produce the right results.  */
 
 /* { dg-do compile } */
-/* { dg-require-effective-target powerpc_float128_hw_ok } */
+/* { dg-require-effective-target powerpc_p9vector_ok } */
 /* { dg-require-effective-target int128 } */
 /* { dg-skip-if "do not override -mcpu" { powerpc*-*-* } { "-mcpu=*" } { 
"-mcpu=power9" } } */
-/* { dg-options "-maltivec -mvsx -mcpu=power9 -O2" } */
+/* { dg-options "-mpower9-vector -mcpu=power9 -O2" } */
 /* { dg-additional-options "-maix64" { target powerpc-ibm-aix* } } */
 
 #include "altivec.h"
@@ -22,4 +22,5 @@
   return vec_mul (x, y);
 }
 
-/* { dg-final { scan-assembler-times "\[ \t\]xsmulqp" 2 } } */
+/* { dg-final { scan-assembler-times {\mmulld\M} 4 } } */
+/* { dg-final { scan-assembler-times {\mmulhdu\M} 2 } } */