[Bug target/84384] new test case gcc.target/powerpc/builtins-4-int128-runnable.c fails on power7

[bergner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84384

Peter Bergner <bergner at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |meissner at gcc dot gnu.org

--- Comment #2 from Peter Bergner <bergner at gcc dot gnu.org> ---
So looking at the differences between -mcpu=power7 and -mcpu=power8, the
preprocessed source shows diffs like:

-  __attribute__((altivec(vector__))) __int128_t vec_128_expected1,
vec_128_result1;
-  __attribute__((altivec(vector__))) __uint128_t vec_u128_expected1,
vec_u128_result1;
+  vector __int128_t vec_128_expected1, vec_128_result1;
+  vector __uint128_t vec_u128_expected1, vec_u128_result1;

Not sure if vector __int128_t should be supported on power7 or not yet.  Will
look into it.