[Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions

[uros at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89071

--- Comment #11 from uros at gcc dot gnu.org ---
Author: uros
Date: Thu Jan 31 20:06:42 2019
New Revision: 268427

URL: https://gcc.gnu.org/viewcvs?rev=268427&root=gcc&view=rev
Log:
        PR target/89071
        * config/i386/i386.md (*extendsfdf2): Split out reg->reg
        alternative to avoid partial SSE register stall for TARGET_AVX.
        (truncdfsf2): Ditto.
        (sse4_1_round<mode>2): Ditto.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.md