[Bug rtl-optimization/55838] [4.6/4.7/4.8 Regression] ICE in extract_insn (unrecognizable insn) with -O -funroll-loops

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55838



--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-01-03 
09:05:49 UTC ---

Author: jakub

Date: Thu Jan  3 09:05:43 2013

New Revision: 194837



URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=194837

Log:

    PR rtl-optimization/55838

    * loop-iv.c (iv_number_of_iterations): Call lowpart_subreg on

    iv0.step, iv1.step and step.



    * gcc.dg/pr55838.c: New test.



Added:

    trunk/gcc/testsuite/gcc.dg/pr55838.c

Modified:

    trunk/gcc/ChangeLog

    trunk/gcc/loop-iv.c

    trunk/gcc/testsuite/ChangeLog