https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53712
Marco Leise <Marco.Leise at gmx dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |Marco.Leise at gmx dot de
--- Comment #9 from Marco Leise <Marco.Leise at gmx dot de> ---
If this was fixed three years ago, then how does the same test program produce
this assembly with gcc 5.2.0 (and earlier)?
Dump of assembler code for function test:
0x0000000000400596 <+0>: push rbp
0x0000000000400597 <+1>: mov rbp,rsp
0x000000000040059a <+4>: mov QWORD PTR [rbp-0x28],rdi
0x000000000040059e <+8>: mov QWORD PTR [rbp-0x30],rsi
0x00000000004005a2 <+12>: mov rax,QWORD PTR [rbp-0x30]
0x00000000004005a6 <+16>: mov QWORD PTR [rbp-0x18],rax
0x00000000004005aa <+20>: mov rax,QWORD PTR [rbp-0x18]
0x00000000004005ae <+24>: movdqu xmm0,XMMWORD PTR [rax]
0x00000000004005b2 <+28>: movaps XMMWORD PTR [rbp-0x10],xmm0
0x00000000004005b6 <+32>: mov rax,QWORD PTR [rbp-0x28]
=> 0x00000000004005ba <+36>: movdqa xmm0,XMMWORD PTR [rax]
0x00000000004005be <+40>: movdqa xmm1,xmm0
0x00000000004005c2 <+44>: movdqa xmm0,XMMWORD PTR [rbp-0x10]
0x00000000004005c7 <+49>: pcmpistri xmm0,xmm1,0x0
0x00000000004005cd <+55>: mov eax,ecx
0x00000000004005cf <+57>: pcmpistrm xmm0,xmm1,0x0
0x00000000004005d5 <+63>: pop rbp
0x00000000004005d6 <+64>: ret
gcc -v
Using built-in specs.
COLLECT_GCC=/usr/x86_64-pc-linux-gnu/gcc-bin/5.2.0/gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/5.2.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /var/tmp/portage/sys-devel/gcc-5.2.0/work/gcc-5.2.0/configure
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/5.2.0
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/5.2.0/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/5.2.0
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/5.2.0/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/5.2.0/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/5.2.0/include/g++-v5
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/5.2.0/python
--enable-languages=c,c++ --enable-obsolete --enable-secureplt --disable-werror
--with-system-zlib --enable-nls --without-included-gettext
--enable-checking=release --with-bugurl=https://bugs.gentoo.org/
--with-pkgversion='Gentoo 5.2.0 p1.1, pie-0.6.4' --enable-libstdcxx-time
--enable-shared --enable-threads=posix --enable-__cxa_atexit
--enable-clocale=gnu --enable-multilib --with-multilib-list=m32,m64
--disable-altivec --disable-fixed-point --enable-targets=all --disable-libgcj
--enable-libgomp --disable-libmudflap --disable-libssp --disable-libcilkrts
--disable-libquadmath --enable-lto --without-isl --enable-libsanitizer
Thread model: posix
gcc version 5.2.0 (Gentoo 5.2.0 p1.1, pie-0.6.4)
