[PATCH, rs6000] fix-up int128 fold vector multiply tests

[Will Schmidt]

Hi

[PATCH, rs6000] fix-up int128 fold vector multiply tests
 
    Fix up a few issues with the tests.
    - add -O2 to int128-p8 test, and firm up the -mcpu options
    - update the set of expected instructions for the int128-p9 test.
    - replace the float128_hw requirement with power8_vector_ok
    for the int128-p9 test.

sniff-tested P6 and newer.
OK for trunk?
Thanks,
-Will

2017-10-09  Will Schmidt <will_schm...@vnet.ibm.com>
        * gcc.target/powerpc/fold-vec-mult-int128-p8.c: Update options
        * gcc.target/powerpc/fold-vec-mult-int128-p9.c: Update expected
        instruction list.

diff --git a/gcc/testsuite/gcc.target/powerpc/fold-vec-mult-int128-p8.c 
b/gcc/testsuite/gcc.target/powerpc/fold-vec-mult-int128-p8.c
index 97d6b945..5ced2cd 100644
--- a/gcc/testsuite/gcc.target/powerpc/fold-vec-mult-int128-p8.c
+++ b/gcc/testsuite/gcc.target/powerpc/fold-vec-mult-int128-p8.c
@@ -3,11 +3,12 @@
 
 /* { dg-do compile } */
 /* { dg-require-effective-target powerpc_p8vector_ok } */
 /* { dg-require-effective-target int128 } */
 /* { dg-require-effective-target lp64 } */
-/* { dg-options "-mpower8-vector" } */
+/* { 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"
 
 vector signed __int128
@@ -20,7 +21,7 @@ vector unsigned __int128
 test2 (vector unsigned __int128 x, vector unsigned __int128 y)
 {
   return vec_mul (x, y);
 }
 
-/* { dg-final { scan-assembler-times "\[ \t\]mulld " 6 } } */
+/* { dg-final { scan-assembler-times "\[ \t\]mulld" 6 } } */
 /* { dg-final { scan-assembler-times "\[ \t\]mulhdu" 2 } } */
diff --git a/gcc/testsuite/gcc.target/powerpc/fold-vec-mult-int128-p9.c 
b/gcc/testsuite/gcc.target/powerpc/fold-vec-mult-int128-p9.c
index e81ea5f..a226ae0 100644
--- a/gcc/testsuite/gcc.target/powerpc/fold-vec-mult-int128-p9.c
+++ b/gcc/testsuite/gcc.target/powerpc/fold-vec-mult-int128-p9.c
@@ -1,10 +1,10 @@
 /* Verify that overloaded built-ins for vec_mul with __int128
    inputs produce the right results.  */
 
 /* { dg-do compile } */
-/* { dg-require-effective-target powerpc_float128_hw_ok } */
+/* { dg-require-effective-target powerpc_p8vector_ok } */
 /* { dg-require-effective-target int128 } */
 /* { dg-skip-if "do not override -mcpu" { powerpc*-*-* } { "-mcpu=*" } { 
"-mcpu=power9" } } */
 /* { dg-options "-mcpu=power9 -O2" } */
 /* { dg-additional-options "-maix64" { target powerpc-ibm-aix* } } */
 
@@ -20,6 +20,7 @@ vector unsigned __int128
 test2 (vector unsigned __int128 x, vector unsigned __int128 y)
 {
   return vec_mul (x, y);
 }
 
-/* { dg-final { scan-assembler-times "\[ \t\]xsmulqp" 2 } } */
+/* { dg-final { scan-assembler-times "\[ \t\]mulld" 4 } } */
+/* { dg-final { scan-assembler-times "\[ \t\]mulhdu" 2 } } */