[Bug middle-end/63761] [5 Regression] error: gimple_bb (stmt) is set to a wrong basic block

[thopre01 at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63761

--- Comment #5 from thopre01 at gcc dot gnu.org ---
Author: thopre01
Date: Wed Nov 12 09:50:20 2014
New Revision: 217409

URL: https://gcc.gnu.org/viewcvs?rev=217409&root=gcc&view=rev
Log:
2014-11-12  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/
    PR tree-optimization/63761
    * tree-ssa-math-opts.c (bswap_replace): Construct gsi from cur_stmt
    rather than taking it as a parameter. Add some comments to explain the
    gsi_move_before in case of load and why canonicalization of bswap into
    a rotation is only done for 16bit values.
    (pass_optimize_bswap::execute): Adapt for loop via gsi to make gsi
    refer to the statement just before cur_stmt. Ignore 16bit bswap that
    are already in canonical form. Adapt bswap_replace to removal of its
    gsi parameter.

    2014-11-12  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/testsuite/
    PR tree-optimization/63761
    * gcc.c-torture/compile/pr63761.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/pr63761.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-math-opts.c