[Bug target/85684] output of instrinsic _xgetbv is wrongly overwritten

[uros at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85684

--- Comment #4 from uros at gcc dot gnu.org ---
Author: uros
Date: Thu Jun  7 16:37:01 2018
New Revision: 261283

URL: https://gcc.gnu.org/viewcvs?rev=261283&root=gcc&view=rev
Log:
        PR target/85684
        * config/i386/i386.c (ix86_expand_builtin) <case IX86_BUILTIN_RDPID>:
        Generate SImode target register for null target.
        <case IX86_BUILTIN_XGETBV>: Ditto.
        <case IX86_BUILTIN_XSETBV>: Optimize LSHIFTRT generation.
        * config/i386/xsaveintrin.h (_xgetbv): Add missing return.

testsuite/ChangeLog:

        PR target/85684
        * gcc.target/i386/xgetsetbv.c: Check also variable arguments.


Modified:
    branches/gcc-8-branch/gcc/ChangeLog
    branches/gcc-8-branch/gcc/config/i386/i386.c
    branches/gcc-8-branch/gcc/config/i386/xsaveintrin.h
    branches/gcc-8-branch/gcc/testsuite/ChangeLog
    branches/gcc-8-branch/gcc/testsuite/gcc.target/i386/xgetsetbv.c