[Bug testsuite/48809] [4.4/4.5 Regression] switch statement optimization error

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48809

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-05-03 16:37:19 UTC ---
Author: jakub
Date: Tue May  3 16:37:12 2011
New Revision: 173328

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=173328
Log:
    Backport from mainline
    2011-04-30  Jakub Jelinek  <jakub@redhat.com>

    PR tree-optimization/48809
    * tree-switch-conversion.c (build_arrays): Compute tidx in unsigned
    type.
    (gen_inbound_check): Don't compute index_expr - range_min in utype
    again, instead reuse SSA_NAME initialized in build_arrays.
    Remove two useless gsi_for_stmt calls.

    * gcc.c-torture/execute/pr48809.c: New test.

Added:
    branches/gcc-4_5-branch/gcc/testsuite/gcc.c-torture/execute/pr48809.c
Modified:
    branches/gcc-4_5-branch/gcc/ChangeLog
    branches/gcc-4_5-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_5-branch/gcc/tree-switch-conversion.c