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From: "edlinger at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/48784] #pragma pack(1) + -fstrict-volatile-bitfields = bad codegen Date: Wed, 11 Dec 2013 16:59:00 -0000 [thread overview] Message-ID: <bug-48784-4-niOHmDrbH2@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-48784-4@http.gcc.gnu.org/bugzilla/> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48784 --- Comment #6 from edlinger at gcc dot gnu.org --- Author: edlinger Date: Wed Dec 11 16:59:24 2013 New Revision: 205897 URL: http://gcc.gnu.org/viewcvs?rev=205897&root=gcc&view=rev Log: 2013-12-11 Bernd Edlinger <bernd.edlinger@hotmail.de> Sandra Loosemore <sandra@codesourcery.com> PR middle-end/23623 PR middle-end/48784 PR middle-end/56341 PR middle-end/56997 * expmed.c (strict_volatile_bitfield_p): Add bitregion_start and bitregion_end parameters. Test for compliance with C++ memory model. (store_bit_field): Adjust call to strict_volatile_bitfield_p. Add fallback logic for cases where -fstrict-volatile-bitfields is supposed to apply, but cannot. (extract_bit_field): Likewise. Use narrow_bit_field_mem and extract_fixed_bit_field_1 to do the extraction. (extract_fixed_bit_field): Revert to previous mode selection algorithm. Call extract_fixed_bit_field_1 to do the real work. (extract_fixed_bit_field_1): New function. testsuite: * gcc.dg/pr23623.c: Update to test interaction with C++ memory model. Modified: trunk/gcc/ChangeLog trunk/gcc/expmed.c trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/gcc.dg/pr23623.c
next prev parent reply other threads:[~2013-12-11 16:59 UTC|newest] Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top 2011-04-27 1:19 [Bug tree-optimization/48784] New: " arthur.j.odwyer at gmail dot com 2012-08-18 1:11 ` [Bug middle-end/48784] " sandra at codesourcery dot com 2013-06-08 19:55 ` sandra at codesourcery dot com 2013-06-14 2:59 ` sandra at codesourcery dot com 2013-10-07 15:40 ` sandra at codesourcery dot com 2013-12-11 16:50 ` edlinger at gcc dot gnu.org 2013-12-11 16:59 ` edlinger at gcc dot gnu.org [this message] 2014-02-27 7:28 ` jye2 at gcc dot gnu.org 2021-09-28 1:37 ` pinskia at gcc dot gnu.org
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