Adam Lewis <adam.j.le...@gmail.com> wrote: >On Fri, Dec 21, 2012 at 4:41 AM, Richard Biener ><richard.guent...@gmail.com>wrote: > >> On Thu, Dec 20, 2012 at 5:33 PM, Adam <adam.j.le...@gmail.com> wrote: >> > Hi, >> > >> > When using -flto is there a way to tell gcc to not inline a >particular >> function? attribute noinline appears to have no effect. I am using >gcc >> 4.7.2. The use case is for certain functions that cause optimization >> problems when they are inlined. An example is when the function is >throwing >> a c++ exception. >> >> attribute noinline should have the desired effect (you may need >> noclone as well). >> >> Richard. >> > > >Richard, > >Doesn't seem to work for me. Here is what I am trying: >func.hpp ( I have tried this with various combinations and orderings of >noinline, noclone ): > >void my__func() __attribute__((noinline)) __attribute__ ((noclone)); > >func.cpp: >#include <cstdio> >void my__func() { printf("prnting"); }
The attribute is missing here. Or the include. Richard. > >main.cpp >#include "func.hpp" >int main() { my__func(); return 0; } > > >then: >g++ -O3 -g -flto main.cpp func.cpp -o lto_inline_test > >I load up gdb, break main, run. disassemble and see that it is directly >calling printf instead of my__func. > >gcc -v: >Using built-in specs. >COLLECT_GCC=gcc >COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.7/lto-wrapper >Target: x86_64-linux-gnu >Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro >4.7.2-11precise2' >--with-bugurl=file:///usr/share/doc/gcc-4.7/README.Bugs >--enable-languages=c,c++,go,fortran,objc,obj-c++ --prefix=/usr >--program-suffix=-4.7 --enable-shared --enable-linker-build-id >--with-system-zlib --libexecdir=/usr/lib --without-included-gettext >--enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.7 >--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu >--enable-libstdcxx-debug --enable-libstdcxx-time=yes >--enable-gnu-unique-object --enable-plugin --enable-objc-gc >--disable-werror --with-arch-32=i686 --with-abi=m64 >--with-multilib-list=m32,m64 --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 4.7.2 (Ubuntu/Linaro 4.7.2-11precise2) > >Any thoughts? > > > > > >> >> > Thanks, >> > Adam >> -- Diese Nachricht wurde von meinem Android-Mobiltelefon mit K-9 Mail gesendet.