https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84371
--- Comment #5 from Carl Love <carll at gcc dot gnu.org> --- Will, I am guessing the recent changes that I made to the vec_neg builtin might be getting you. The vec_neg was orignially using P7 expansion macros but it used P8 rtl so when compiled with -mcpu=power7 the vec_neg builtin would give an ICE. The macro expansions for vec_neg, vec_float2, vec_signed2 and vec_unsigned2 are all being changed from P7 expansion macros to P8 expansion macros to fix GCC internal compiler errors when compiled with -mcpu=power7. See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84422 for the list of test cases that fail with -mcpu=power7.
