[Bug rtl-optimization/40861] [4.4/4.5 Regression] ICE in simplify_subreg, at simplify-rtx.c:4981

[uros at gcc dot gnu dot org]

------- Comment #5 from uros at gcc dot gnu dot org  2009-08-27 20:54 -------
Subject: Bug 40861

Author: uros
Date: Thu Aug 27 20:54:28 2009
New Revision: 151149

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=151149
Log:
        PR rtl-optimization/40861
        * simplify-rtx.c (simplify_subreg): Do not call simplify_gen_subreg to
        extract word from a multi-word subreg for negative byte positions.

testsuite/ChangeLog:

        PR rtl-optimization/40861
        * gcc.dg/pr40861.c: New test.


Added:
    trunk/gcc/testsuite/gcc.dg/pr40861.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/simplify-rtx.c
    trunk/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40861