[Bug target/16458] PowerPC - redundant compare

[bergner at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16458

--- Comment #8 from Peter Bergner <bergner at gcc dot gnu.org> 2012-04-11 
11:51:54 UTC ---
Author: bergner
Date: Wed Apr 11 11:51:50 2012
New Revision: 186312

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=186312
Log:
gcc/
    PR target/16458
    * rtlanal.c (unsigned_reg_p): New function.
    Update copyright notice dates.
    * rtl.h (unsigned_reg_p): Prototype it.
    Update copyright notice dates.
    * config/rs6000/rs6000.c (rs6000_generate_compare): Use it.
    Update comment.
    * expr.c (expand_expr_real_1): Set register attributes.
    * stmt.c (expand_case): Likewise.

gcc/testsuite/
    PR target/16458
    * gcc.target/powerpc/pr16458-1.c: New test.
    * gcc.target/powerpc/pr16458-2.c: Likewise.
    * gcc.target/powerpc/pr16458-3.c: Likewise.
    * gcc.target/powerpc/pr16458-4.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.target/powerpc/pr16458-1.c
    trunk/gcc/testsuite/gcc.target/powerpc/pr16458-2.c
    trunk/gcc/testsuite/gcc.target/powerpc/pr16458-3.c
    trunk/gcc/testsuite/gcc.target/powerpc/pr16458-4.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/rs6000/rs6000.c
    trunk/gcc/expr.c
    trunk/gcc/rtl.h
    trunk/gcc/rtlanal.c
    trunk/gcc/stmt.c
    trunk/gcc/testsuite/ChangeLog