https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70646
Denis Vlasenko <vda.linux at googlemail dot com> changed:
What |Removed |Added
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CC| |vda.linux at googlemail dot com
--- Comment #3 from Denis Vlasenko <vda.linux at googlemail dot com> ---
I can reproduce it with:
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/5.3.1/lto-wrapper
Target: x86_64-redhat-linux
Configured with: ../configure --enable-bootstrap
--enable-languages=c,c++,objc,obj-c++,fortran,ada,go,lto --prefix=/usr
--mandir=/usr/share/man --infodir=/usr/share/info
--with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-shared
--enable-threads=posix --enable-checking=release --enable-multilib
--with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions
--enable-gnu-unique-object --enable-linker-build-id
--with-linker-hash-style=gnu --enable-plugin --enable-initfini-array
--disable-libgcj --with-isl --enable-libmpx --enable-gnu-indirect-function
--with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux
Thread model: posix
gcc version 5.3.1 20160406 (Red Hat 5.3.1-6) (GCC)
No fancy compiler flags are necessary to thigger it.
Without "-fno-omit-frame-pointer", function loses its two remaining insns, I
see an empty body:
.type qla2x00_get_host_fabric_name, @function
qla2x00_get_host_fabric_name:
.LFB4504:
.cfi_startproc
.cfi_endproc
.LFE4504:
.size qla2x00_get_host_fabric_name, .-qla2x00_get_host_fabric_name
Simple "gcc -Os qla_attr.i.c -S" would do.
gcc -O2 produces a normally-looking function.
