https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88469
--- Comment #9 from Richard Earnshaw <rearnsha at gcc dot gnu.org> --- Author: rearnsha Date: Thu Jan 24 16:06:34 2019 New Revision: 268240 URL: https://gcc.gnu.org/viewcvs?rev=268240&root=gcc&view=rev Log: Mitigation for PR target/88469 on arm-based systems bootstrapping with gcc-6/7/8 This patch, for gcc 8/9 is a mitigation patch for PR target/88469 where gcc-6/7/8 miscompile a structure whose alignment is dominated by a 64-bit bitfield member. Since the PCS rules for such a type must ignore any overalignment of the base type we cannot address this by simply adding a larger alignment to the class. We can, however, force the alignment of the bit-field itself and GCC will handle that as desired. PR target/88469 * profile-count.h (profile_count): On ARM systems using GCC 6/7/8 force the alignment of m_val. Modified: trunk/gcc/ChangeLog trunk/gcc/profile-count.h
