[Bug rtl-optimization/56571] [4.7/4.8 Regression] ICE in copyprop_hardreg_forward_1, at regcprop.c (insn does not satisfy its constraints !)

[hubicka at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56571

--- Comment #5 from Jan Hubicka <hubicka at gcc dot gnu.org> 2013-03-12 12:13:44 UTC ---
Author: hubicka
Date: Tue Mar 12 12:13:33 2013
New Revision: 196612

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=196612
Log:
    PR middle-end/56571
    * valtrack.c (cleanup_auto_inc_dec): Unshare clobbers originating
    from pseudos.
    * emit-rtl.c (verify_rtx_sharing): Likewise.
    (copy_insn_1): Likewise.
    * rtl.c (copy_rtx): Likewise.
    PR middle-end/56571
    * gcc.c-torture/compile/pr56571.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/pr56571.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/emit-rtl.c
    trunk/gcc/rtl.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/valtrack.c