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line-by-line profiling


How do I get line-by-line profiling to work?  I'm using gcc-3.2 linux
binutils-2.13.90.0.2-2.

The instructions in gprof say to turn on basic block profiling using
gcc -a.  Apparantly this flag is obsolete?  I'm guessing it should be
-fprofile-arcs?

Compiling with g++ -pg -g -mcpu=athlon-xp -march=athlon-xp -O6
-ffast-math -fprofile-arcs, then running 

gprof -l  exechns27 > prof

The results I get don't seem to make sense.  What am I doing wrong?


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