This is the mail archive of the gcc-bugs@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

[Bug tree-optimization/78305] [6 Regression] Wrong constant folding


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78305

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Nov 23 14:31:16 2016
New Revision: 242756

URL: https://gcc.gnu.org/viewcvs?rev=242756&root=gcc&view=rev
Log:
2016-11-23  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2016-11-23  Richard Biener  <rguenther@suse.de>

        PR lto/78472
        * tree.c (gimple_canonical_types_compatible_p): Ignore zero-sized
        fields.

        lto/
        * lto.c (hash_canonical_type): Ignore zero-sized fields.

        * g++.dg/lto/pr78472_0.c: New testcase.
        * g++.dg/lto/pr78472_1.C: Likewise.

        2016-11-17  Richard Biener  <rguenther@suse.de>

        PR middle-end/78305
        * fold-const.c (negate_expr_p): Fix multiplication case.

        * gcc.dg/torture/pr78305.c: New testcase.

        2016-11-16  Richard Biener  <rguenther@suse.de>

        PR middle-end/78333
        * gimplify.c (gimplify_function_tree): Do not instrument
        GNU extern inline functions.

        * gcc.dg/pr78333.c: New testcase.

        2016-11-07  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/78228
        * tree-ssa-phiopt.c (abs_replacement): Avoid introducing
        undefined behavior.

        * gcc.dg/tree-ssa/phi-opt-15.c: New testcase.

        2016-11-04  Richard Biener  <rguenther@suse.de>

        PR middle-end/78185
        * loop-invariant.c (find_exits): Record entering inner
        loops as possibly exiting to handle infinite sub-loops.
        * tree-ssa-loop-im.c: Include tree-ssa-loop-niter.h.
        (fill_always_executed_in_1): Honor infinite child loops.

        * gcc.dg/pr78185.c: New testcase.

        2016-10-06  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/77855
        * tree-ssa-pre.c (prune_clobbered_mems): Queue exprs to remove
        instead of removing the current item while iterating over the set
        which is not safe.

        * gcc.dg/torture/pr77855.c: New testcase.

Added:
    branches/gcc-6-branch/gcc/testsuite/g++.dg/lto/pr78472_0.c
    branches/gcc-6-branch/gcc/testsuite/g++.dg/lto/pr78472_1.C
    branches/gcc-6-branch/gcc/testsuite/gcc.dg/pr78185.c
    branches/gcc-6-branch/gcc/testsuite/gcc.dg/pr78333.c
    branches/gcc-6-branch/gcc/testsuite/gcc.dg/torture/pr77855.c
    branches/gcc-6-branch/gcc/testsuite/gcc.dg/torture/pr78305.c
    branches/gcc-6-branch/gcc/testsuite/gcc.dg/tree-ssa/phi-opt-15.c
Modified:
    branches/gcc-6-branch/gcc/ChangeLog
    branches/gcc-6-branch/gcc/fold-const.c
    branches/gcc-6-branch/gcc/gimplify.c
    branches/gcc-6-branch/gcc/loop-invariant.c
    branches/gcc-6-branch/gcc/lto/ChangeLog
    branches/gcc-6-branch/gcc/lto/lto.c
    branches/gcc-6-branch/gcc/testsuite/ChangeLog
    branches/gcc-6-branch/gcc/tree-ssa-loop-im.c
    branches/gcc-6-branch/gcc/tree-ssa-phiopt.c
    branches/gcc-6-branch/gcc/tree-ssa-pre.c
    branches/gcc-6-branch/gcc/tree.c

Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]