[Bug tree-optimization/36449] Incorrect code generated for access to a large struct

["jakub at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #5 from jakub at gcc dot gnu dot org  2008-09-01 11:33 -------
Subject: Bug 36449

Author: jakub
Date: Mon Sep  1 11:32:18 2008
New Revision: 139858

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=139858
Log:
        PR middle-end/37248
        PR middle-end/36449
        * fold-const.c (make_bit_field_ref): Change bitpos and bitsize
        arguments to HOST_WIDE_INT.
        (fold_truthop): Change first_bit and end_bit to HOST_WIDE_INT.

        * g++.dg/opt/pr36449.C: New test.

        Revert:
        2008-06-11  Richard Guenther  <rguenther@suse.de>
        PR middle-end/36449
        * fold-const.c (fold_truthop): Remove code generating
        BIT_FIELD_REFs of structure bases.
        (fold_binary): Likewise.
        (make_bit_field_ref): Remove.
        (optimize_bit_field_compare): Remove.
        (all_ones_mask_p): Remove.

Added:
    branches/gcc-4_3-branch/gcc/testsuite/g++.dg/opt/pr36449.C
Modified:
    branches/gcc-4_3-branch/gcc/ChangeLog
    branches/gcc-4_3-branch/gcc/fold-const.c
    branches/gcc-4_3-branch/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36449