https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89765
--- Comment #3 from kelvin at gcc dot gnu.org --- I have found that removing the pattern in match.pd resolves this issue with no regressions on various powerpc targets. I have not tested on other platforms. Index: gcc/match.pd =================================================================== --- gcc/match.pd (revision 270020) +++ gcc/match.pd (working copy) @@ -4963,11 +4963,6 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT) (BIT_FIELD_REF @0 @1 @2)) (simplify - (BIT_FIELD_REF @0 @1 integer_zerop) - (if (tree_int_cst_equal (@1, TYPE_SIZE (TREE_TYPE (@0)))) - (view_convert @0))) - -(simplify (BIT_FIELD_REF @0 @1 @2) (switch (if (TREE_CODE (TREE_TYPE (@0)) == COMPLEX_TYPE
