On 09/11/2012 03:56 PM, Pete Flugstad wrote: > Hi, > > I'm trying to profile (using valgrind's callgrind) some code that > uses sin/cos and I'm seeing some things I'm not expecting. > > My OS is Ubuntu 12.04/x86_64, hardware is an Intel Xeon X5690. GCC > is the distro version, gcc (Ubuntu/Linaro 4.6.1-9ubuntu3) 4.6.1. I'm > compiling with -O2. > > The strange thing is that I'm seeing sincos (from libm.so) is > showing up in the callgrind output. From reading the manual, GCC > should replace our calls to sin and cos with __builtin_ versions, > right? Yes, it does, and one of the things that expanding the builtins does is call sincos(). Andrew.
