[Bug target/70442] [6 Regression] gcc ICE at -O2 and above on valid code on x86_64-linux-gnu in "extract_insn"

[ienkovich at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70442

--- Comment #3 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
Author: ienkovich
Date: Thu Mar 31 15:37:12 2016
New Revision: 234637

URL: https://gcc.gnu.org/viewcvs?rev=234637&root=gcc&view=rev
Log:
gcc/

        PR target/70442
        * config/i386/i386.c (scalar_chain::convert_op): Fix
        description.
        (scalar_chain::convert_insn): Call convert_op for reg
        moves to handle undefined registers.

gcc/testsuite/

        PR target/70442
        * gcc.dg/pr70442.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr70442.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/testsuite/ChangeLog