[Bug c/64554] New: _mm_clmulepi64_si128 doesn't compile with -O2

[charles at kde dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64554

            Bug ID: 64554
           Summary: _mm_clmulepi64_si128 doesn't compile with -O2
           Product: gcc
           Version: 4.9.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: charles at kde dot org

The following trivial program:

#include <wmmintrin.h>

int main()
{
        __m128i a, b;
        _mm_clmulepi64_si128(a, b, 1);
}

Produces the following error at compile time:

In file included from test.c:1:0:
test.c: In function ‘main’:
/usr/lib/gcc/x86_64-linux-gnu/4.9/include/wmmintrin.h:116:1: error: inlining
failed in call to always_inline ‘_mm_clmulepi64_si128’: target specific option
mismatch
 _mm_clmulepi64_si128 (__m128i __X, __m128i __Y, const int __I)
 ^
test.c:6:2: error: called from here
  _mm_clmulepi64_si128(a, b, 1);
  ^

When compiled with the option -O2 or -O1. Compiling succeeds with -O0.



Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.9/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.9.1-19'
--with-bugurl=file:///usr/share/doc/gcc-4.9/README.Bugs
--enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.9 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.9 --libdir=/usr/lib --enable-nls
--with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug
--enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-vtable-verify
--enable-plugin --with-system-zlib --disable-browser-plugin
--enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64/jre --enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.9-amd64
--with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-objc-gc --enable-multiarch --with-arch-32=i586 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 4.9.1 (Debian 4.9.1-19) 

(Debian testing)