[Bug target/71801] [7 Regression] ice in fix_debug_reg_uses

[hjl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71801

--- Comment #3 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Mon Jul 11 15:13:56 2016
New Revision: 238211

URL: https://gcc.gnu.org/viewcvs?rev=238211&root=gcc&view=rev
Log:
Don't convert TImode in debug insn

When converting V1TImode register in debug insn, check if it has been
converted to TImode already.

gcc/

        PR target/71801
        * config/i386/i386.c (timode_scalar_chain::fix_debug_reg_uses):
        Don't convert TImode in debug insn.

gcc/testsuite/

        PR target/71801
        * gcc.target/i386/pr71801.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr71801.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/testsuite/ChangeLog