http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52979
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-04-25 14:27:15 UTC --- Author: jakub Date: Wed Apr 25 14:27:08 2012 New Revision: 186819 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=186819 Log: PR middle-end/52979 * stor-layout.c (get_best_mode): Don't return mode with bitsize larger than maxbits. Don't compute maxbits modulo align. Also check that unit bytes long store at bitpos / unit * unit doesn't affect bits beyond bitregion_end. * expmed.c (store_bit_field_1): Avoid trying insv if OP_MODE MEM would not fit into bitregion_start ... bitregion_end + 1 bit region. (store_split_bit_field): Decrease unit close to end of bitregion_end if access is restricted in order to avoid mutual recursion. * gcc.c-torture/compile/pr52979-1.c: New test. * gcc.c-torture/execute/pr52979-1.c: New test. * gcc.c-torture/execute/pr52979-2.c: New test. Added: trunk/gcc/testsuite/gcc.c-torture/compile/pr52979-1.c trunk/gcc/testsuite/gcc.c-torture/execute/pr52979-1.c trunk/gcc/testsuite/gcc.c-torture/execute/pr52979-2.c Modified: trunk/gcc/ChangeLog trunk/gcc/expmed.c trunk/gcc/stor-layout.c trunk/gcc/testsuite/ChangeLog
