[Bug target/79498] [7 Regression] ICE in df_insn_delete, at df-scan.c:948

[hjl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79498

--- Comment #9 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Tue Feb 14 16:53:22 2017
New Revision: 245438

URL: https://gcc.gnu.org/viewcvs?rev=245438&root=gcc&view=rev
Log:
Properly store 128-bit constant in large model

When converting TI store with CONST_INT to V1TI store with CONST_VECTOR
in large model, an extra instruction may be needed to load CONST_VECTOR
into a register.  Insert the extra instruction to the right place.

gcc/

        PR target/79498
        * config/i386/i386.c (timode_scalar_chain::convert_insn): Insert
        the extra instruction to the right place to store 128-bit constant
        when needed.

gcc/testsuite/

        PR target/79498
        * gcc.target/i386/pr79498.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr79498.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/testsuite/ChangeLog