http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52979
--- Comment #11 from Richard Guenther 2012-06-04
10:19:49 UTC ---
Author: rguenth
Date: Mon Jun 4 10:19:44 2012
New Revision: 188176
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=188176
Log:
2012-06-04 Richard Guenther
Backport from mainline
2012-04-25 Jakub Jelinek
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:
branches/gcc-4_7-branch/gcc/testsuite/gcc.c-torture/compile/pr52979-1.c
branches/gcc-4_7-branch/gcc/testsuite/gcc.c-torture/execute/pr52979-1.c
branches/gcc-4_7-branch/gcc/testsuite/gcc.c-torture/execute/pr52979-2.c
Modified:
branches/gcc-4_7-branch/gcc/ChangeLog
branches/gcc-4_7-branch/gcc/expmed.c
branches/gcc-4_7-branch/gcc/stor-layout.c
branches/gcc-4_7-branch/gcc/testsuite/ChangeLog
