[Bug target/50182] Performance degradation from gcc 4.1 (x86_64)

[oleg at smolsky dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50182

--- Comment #34 from oleg at smolsky dot net 2012-03-03 02:19:21 UTC ---
OK, here are some benchmark numbers for the test compiled verbatim with 
g++41/g++463 -O2:

$ time ./test41
rv=4243767296

real    0m6.063s
user    0m6.058s
sys     0m0.001s

$ time ./test46
rv=4243767296

real    0m11.425s
user    0m11.415s
sys     0m0.003s

$ time ./test46-fast     #(ie built it with -DFAST_VER)
rv=4243767296

real    0m11.389s
user    0m11.383s
sys     0m0.003s

Let me see how the sample can be digested further down...