[Bug rtl-optimization/49799] gcc arm generates illegal sbfx instruction

[carrot at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49799

--- Comment #9 from carrot at gcc dot gnu.org 2011-07-29 01:27:32 UTC ---
Author: carrot
Date: Fri Jul 29 01:27:29 2011
New Revision: 176911

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=176911
Log:
    PR rtl-optimization/49799

    * combine.c (make_compound_operation): Check if the bit field is valid
    before change it to bit field extraction.

    * gcc.dg/pr49799.c: New test case.


Added:
    trunk/gcc/testsuite/gcc.dg/pr49799.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/combine.c
    trunk/gcc/testsuite/ChangeLog